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39
ActionFailureException.java
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@ -1,39 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**支持小米便签运行过程中的运行异常处理 */
package net.micode.notes.gtask.exception;
public class ActionFailureException extends RuntimeException {
private static final long serialVersionUID = 4425249765923293627L;
/**serialVersionUID相当于java类的身份证，主要用于版本控制
* serialVersionUID作用是序列化时保持版本的兼容性，即在版本升级时反序列化仍保持对象的唯一性
*/
public ActionFailureException() {
super();
}
/**
* 在JAVA类中使用super来引用父类的成分，用this来引用当前对象
* 如果一个类从另一个类继承，我们new这个子类的实例对象的时候，这个子类对象里面会有一个父类对象，使用super引用父类对象
* 此处super（）及super（paramString）可认为是Exception（）和Exception（paramString）
*/
public ActionFailureException(String paramString) {
super(paramString);
}
public ActionFailureException(String paramString, Throwable paramThrowable) {
super(paramString, paramThrowable);
}
}

98
AlarmAlertActivity.java
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@ -14,7 +14,7 @@
* limitations under the License. * limitations under the License.
*/ */
package net.micode.notes.ui;//定义一个名为net.micode.notes.ui的包 package net.micode.notes.ui;
import android.app.Activity; import android.app.Activity;
import android.app.AlertDialog; import android.app.AlertDialog;
@ -39,82 +39,66 @@ import net.micode.notes.tool.DataUtils;
import java.io.IOException; import java.io.IOException;
// 定义一个名为 AlarmAlertActivity 的 Activity
public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener { public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener {
private long mNoteId; //文本在数据库存储中的ID号 // 用于存储笔记的 ID
private String mSnippet;//闹钟提示时出现的文本片段 private long mNoteId;
private String mSnippet;
// 定义片段预览的最大长度
private static final int SNIPPET_PREW_MAX_LEN = 60; private static final int SNIPPET_PREW_MAX_LEN = 60;
// 定义媒体播放器，用于播放闹钟声音
MediaPlayer mPlayer; MediaPlayer mPlayer;
@Override @Override
protected void onCreate(Bundle savedInstanceState) { protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); super.onCreate(savedInstanceState);
//Bundle类型的数据与Map类型的数据相似，都是以key-value的形式存储数据的
//onsaveInstanceState方法是用来保存Activity的状态的
//能从onCreate的参数savedInsanceState中获得状态数据
requestWindowFeature(Window.FEATURE_NO_TITLE); requestWindowFeature(Window.FEATURE_NO_TITLE);
//界面显示——无标题 // 获取窗口对象
final Window win = getWindow(); final Window win = getWindow();
// 设置在锁屏状态下也能显示该窗口
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
// 如果屏幕没有点亮
if (!isScreenOn()) { if (!isScreenOn()) {
win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
//保持窗体点亮
| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
//将窗体点亮
| WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
//允许窗体点亮时锁屏
| WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR); | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR);
}//在手机锁屏后如果到了闹钟提示时间，点亮屏幕 }
// 获取启动该 Activity 的 Intent
Intent intent = getIntent(); Intent intent = getIntent();
try { try {
// 从 Intent 的数据中获取路径片段中的第二个元素作为笔记 ID
mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1)); mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
// 根据笔记 ID 获取笔记片段
mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId); mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
//根据ID从数据库中获取标签的内容； // 如果片段长度超过最大长度，则截断并添加提示信息
//getContentResolver（）是实现数据共享，实例存储。
mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0, mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0,
SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info) SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
: mSnippet; : mSnippet;
//判断标签片段是否达到符合长度
} catch (IllegalArgumentException e) { } catch (IllegalArgumentException e) {
e.printStackTrace(); e.printStackTrace();
return; return;
} }
// 创建媒体播放器对象
/*
try
{
// 代码区
}
catch(Exception e)
{
// 异常处理
}
代码区如果有错误，就会返回所写异常的处理。*/
mPlayer = new MediaPlayer(); mPlayer = new MediaPlayer();
if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) { if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
showActionDialog(); showActionDialog();
//弹出对话框
playAlarmSound(); playAlarmSound();
//闹钟提示音激发
} else { } else {
finish(); finish();
//完成闹钟动作
} }
} }
// 判断屏幕是否点亮
private boolean isScreenOn() { private boolean isScreenOn() {
//判断屏幕是否锁屏，调用系统函数判断，最后返回值是布尔类型
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE); PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
return pm.isScreenOn(); return pm.isScreenOn();
} }
// 播放闹钟声音
private void playAlarmSound() { private void playAlarmSound() {
//闹钟提示音激发 // 获取默认闹钟铃声的 Uri
Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM); Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);
//调用系统的铃声管理URI，得到闹钟提示音 // 获取系统设置中铃声流的静音模式状态
int silentModeStreams = Settings.System.getInt(getContentResolver(), int silentModeStreams = Settings.System.getInt(getContentResolver(),
Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0); Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
@ -124,20 +108,15 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM); mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
} }
try { try {
// 设置媒体播放器的数据源为闹钟铃声的 Uri
mPlayer.setDataSource(this, url); mPlayer.setDataSource(this, url);
//方法：setDataSource(Context context, Uri uri)
//解释：无返回值，设置多媒体数据来源【根据 Uri】
mPlayer.prepare(); mPlayer.prepare();
//准备同步
mPlayer.setLooping(true); mPlayer.setLooping(true);
//设置是否循环播放 / 开始播放
mPlayer.start(); mPlayer.start();
//开始播放
} catch (IllegalArgumentException e) { } catch (IllegalArgumentException e) {
// TODO Auto-generated catch block // TODO Auto-generated catch block
e.printStackTrace(); e.printStackTrace();
//e.printStackTrace()函数功能是抛出异常， 还将显示出更深的调用信息
//System.out.println(e)，这个方法打印出异常，并且输出在哪里出现的异常
} catch (SecurityException e) { } catch (SecurityException e) {
// TODO Auto-generated catch block // TODO Auto-generated catch block
e.printStackTrace(); e.printStackTrace();
@ -149,60 +128,41 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
e.printStackTrace(); e.printStackTrace();
} }
} }
// 显示操作对话框
private void showActionDialog() { private void showActionDialog() {
AlertDialog.Builder dialog = new AlertDialog.Builder(this); AlertDialog.Builder dialog = new AlertDialog.Builder(this);
//AlertDialog的构造方法全部是Protected的
//所以不能直接通过new一个AlertDialog来创建出一个AlertDialog。
//要创建一个AlertDialog，就要用到AlertDialog.Builder中的create()方法
//如这里的dialog就是新建了一个AlertDialog
dialog.setTitle(R.string.app_name); dialog.setTitle(R.string.app_name);
//为对话框设置标题
dialog.setMessage(mSnippet); dialog.setMessage(mSnippet);
//为对话框设置内容
dialog.setPositiveButton(R.string.notealert_ok, this); dialog.setPositiveButton(R.string.notealert_ok, this);
//给对话框添加"Yes"按钮
if (isScreenOn()) { if (isScreenOn()) {
dialog.setNegativeButton(R.string.notealert_enter, this); dialog.setNegativeButton(R.string.notealert_enter, this);
}//对话框添加"No"按钮 }
dialog.show().setOnDismissListener(this); dialog.show().setOnDismissListener(this);
} }
// 对话框关闭事件处理方法
public void onClick(DialogInterface dialog, int which) { public void onClick(DialogInterface dialog, int which) {
switch (which) { switch (which) {s
//用which来选择click后下一步的操作
case DialogInterface.BUTTON_NEGATIVE: case DialogInterface.BUTTON_NEGATIVE:
//这是取消操作
Intent intent = new Intent(this, NoteEditActivity.class); Intent intent = new Intent(this, NoteEditActivity.class);
//实现两个类间的数据传输
intent.setAction(Intent.ACTION_VIEW); intent.setAction(Intent.ACTION_VIEW);
//设置动作属性
intent.putExtra(Intent.EXTRA_UID, mNoteId); intent.putExtra(Intent.EXTRA_UID, mNoteId);
//实现key-value对
//EXTRA_UID为key；mNoteId为键
startActivity(intent); startActivity(intent);
//开始动作
break; break;
default: default:
//这是确定操作
break; break;
} }
} }
// 对话框关闭事件处理方法
public void onDismiss(DialogInterface dialog) { public void onDismiss(DialogInterface dialog) {
//忽略
stopAlarmSound(); stopAlarmSound();
//停止闹钟声音
finish(); finish();
//完成该动作
} }
// 停止闹钟声音的方法
private void stopAlarmSound() { private void stopAlarmSound() {
if (mPlayer != null) { if (mPlayer != null) {
mPlayer.stop(); mPlayer.stop();
//停止播放
mPlayer.release(); mPlayer.release();
//释放MediaPlayer对象
mPlayer = null; mPlayer = null;
} }
} }

71
AlarmInitReceiver.java
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@ -1,71 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;
public class AlarmInitReceiver extends BroadcastReceiver {
private static final String [] PROJECTION = new String [] {
NoteColumns.ID,
NoteColumns.ALERTED_DATE
};
//对数据库的操作，调用标签ID和闹钟时间
private static final int COLUMN_ID = 0;
private static final int COLUMN_ALERTED_DATE = 1;
@Override
public void onReceive(Context context, Intent intent) {
long currentDate = System.currentTimeMillis();
//System.currentTimeMillis()产生一个当前的毫秒
//这个毫秒其实就是自1970年1月1日0时起的毫秒数
Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
PROJECTION,
NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,
new String[] { String.valueOf(currentDate) },
//将long变量currentDate转化为字符串
null);
//Cursor在这里的作用是通过查找数据库中的标签内容，找到和当前系统时间相等的标签
if (c != null) {
if (c.moveToFirst()) {
do {
long alertDate = c.getLong(COLUMN_ALERTED_DATE);
Intent sender = new Intent(context, AlarmReceiver.class);
sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);
AlarmManager alermManager = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
} while (c.moveToNext());
}
c.close();
}
//然而通过网上查找资料发现，对于闹钟机制的启动，通常需要上面的几个步骤
//如新建Intent、PendingIntent以及AlarmManager等
//这里就是根据数据库里的闹钟时间创建一个闹钟机制
}
}

37
AlarmReceiver.java
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@ -1,37 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
intent.setClass(context, AlarmAlertActivity.class);
//启动AlarmAlertActivity
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//activity要存在于activity的栈中，而非activity的途径启动activity时必然不存在一个activity的栈
//所以要新起一个栈装入启动的activity
context.startActivity(intent);
}
}
/**
*这是实现alarm这个功能最接近用户层的包，基于上面的两个包，
*作用还需要深究
*/

350
BackupUtils.java
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@ -1,350 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.tool;
import android.content.Context;
import android.database.Cursor;
import android.os.Environment;
import android.text.TextUtils;
import android.text.format.DateFormat;
import android.util.Log;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.DataConstants;
import net.micode.notes.data.Notes.NoteColumns;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
public class BackupUtils {
private static final String TAG = "BackupUtils";
// Singleton stuff
private static BackupUtils sInstance;
public static synchronized BackupUtils getInstance(Context context) {
//synchronized关键字，代表这个方法加锁，相当于不管哪一个线程（例如线程A）
//运行到这个方法时，都要检查有没有其他线程B（或者C、D等）正在用这个方法（或者该类的其他同步方法），有的话要等正在使用synchronized方法的线程B（或者C、D）
//运行完这个方法后再运行此线程A，没有的话，锁定调用者，然后直接运行
//它包括两种方法：synchronized方法和synchronized块
if (sInstance == null) {
//如果当前备份不存在，则新声明一个
sInstance = new BackupUtils(context);
}
return sInstance;
}
/**
* Following states are signs to represents backup or restore
* status
*/
// Currently, the sdcard is not mounted SD卡没有被装入手机
public static final int STATE_SD_CARD_UNMOUONTED = 0;
// The backup file not exist 备份文件夹不存在
public static final int STATE_BACKUP_FILE_NOT_EXIST = 1;
// The data is not well formated, may be changed by other programs 数据已被破坏，可能被修改
public static final int STATE_DATA_DESTROIED = 2;
// Some run-time exception which causes restore or backup fails 超时异常
public static final int STATE_SYSTEM_ERROR = 3;
// Backup or restore success 成功存储
public static final int STATE_SUCCESS = 4;
private TextExport mTextExport;
private BackupUtils(Context context) {//初始化函数
mTextExport = new TextExport(context);
}
private static boolean externalStorageAvailable() {//外部存储功能是否可用
return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState());
}
public int exportToText() {
return mTextExport.exportToText();
}
public String getExportedTextFileName() {
return mTextExport.mFileName;
}
public String getExportedTextFileDir() {
return mTextExport.mFileDirectory;
}
private static class TextExport {
private static final String[] NOTE_PROJECTION = {
NoteColumns.ID,
NoteColumns.MODIFIED_DATE,
NoteColumns.SNIPPET,
NoteColumns.TYPE
};
private static final int NOTE_COLUMN_ID = 0;
private static final int NOTE_COLUMN_MODIFIED_DATE = 1;
private static final int NOTE_COLUMN_SNIPPET = 2;
private static final String[] DATA_PROJECTION = {
DataColumns.CONTENT,
DataColumns.MIME_TYPE,
DataColumns.DATA1,
DataColumns.DATA2,
DataColumns.DATA3,
DataColumns.DATA4,
};
private static final int DATA_COLUMN_CONTENT = 0;
private static final int DATA_COLUMN_MIME_TYPE = 1;
private static final int DATA_COLUMN_CALL_DATE = 2;
private static final int DATA_COLUMN_PHONE_NUMBER = 4;
private final String [] TEXT_FORMAT;
private static final int FORMAT_FOLDER_NAME = 0;
private static final int FORMAT_NOTE_DATE = 1;
private static final int FORMAT_NOTE_CONTENT = 2;
private Context mContext;
private String mFileName;
private String mFileDirectory;
public TextExport(Context context) {
TEXT_FORMAT = context.getResources().getStringArray(R.array.format_for_exported_note);
mContext = context;
mFileName = "";
mFileDirectory = "";
}
private String getFormat(int id) {//获取文本的组成部分
return TEXT_FORMAT[id];
}
/**
* Export the folder identified by folder id to text
*/
private void exportFolderToText(String folderId, PrintStream ps) {
// Query notes belong to this folder 通过查询parent id是文件夹id的note来选出制定ID文件夹下的note
Cursor notesCursor = mContext.getContentResolver().query(Notes.CONTENT_NOTE_URI,
NOTE_PROJECTION, NoteColumns.PARENT_ID + "=?", new String[] {
folderId
}, null);
if (notesCursor != null) {
if (notesCursor.moveToFirst()) {
do {
// Print note's last modified date ps里面保存有这份note的日期
ps.println(String.format(getFormat(FORMAT_NOTE_DATE), DateFormat.format(
mContext.getString(R.string.format_datetime_mdhm),
notesCursor.getLong(NOTE_COLUMN_MODIFIED_DATE))));
// Query data belong to this note
String noteId = notesCursor.getString(NOTE_COLUMN_ID);
exportNoteToText(noteId, ps);//将文件导出到text
} while (notesCursor.moveToNext());
}
notesCursor.close();
}
}
/**
* Export note identified by id to a print stream
*/
private void exportNoteToText(String noteId, PrintStream ps) {
Cursor dataCursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI,
DATA_PROJECTION, DataColumns.NOTE_ID + "=?", new String[] {
noteId
}, null);
if (dataCursor != null) {//利用光标来扫描内容，区别为callnote和note两种，靠ps.printline输出
if (dataCursor.moveToFirst()) {
do {
String mimeType = dataCursor.getString(DATA_COLUMN_MIME_TYPE);
if (DataConstants.CALL_NOTE.equals(mimeType)) {
// Print phone number
String phoneNumber = dataCursor.getString(DATA_COLUMN_PHONE_NUMBER);
long callDate = dataCursor.getLong(DATA_COLUMN_CALL_DATE);
String location = dataCursor.getString(DATA_COLUMN_CONTENT);
if (!TextUtils.isEmpty(phoneNumber)) {//判断是否为空字符
ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
phoneNumber));
}
// Print call date
ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), DateFormat
.format(mContext.getString(R.string.format_datetime_mdhm),
callDate)));
// Print call attachment location
if (!TextUtils.isEmpty(location)) {
ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
location));
}
} else if (DataConstants.NOTE.equals(mimeType)) {
String content = dataCursor.getString(DATA_COLUMN_CONTENT);
if (!TextUtils.isEmpty(content)) {
ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT),
content));
}
}
} while (dataCursor.moveToNext());
}
dataCursor.close();
}
// print a line separator between note
try {
ps.write(new byte[] {
Character.LINE_SEPARATOR, Character.LETTER_NUMBER
});
} catch (IOException e) {
Log.e(TAG, e.toString());
}
}
/**
* Note will be exported as text which is user readable
*/
public int exportToText() {//总函数，调用上面的exportFolder和exportNote
if (!externalStorageAvailable()) {
Log.d(TAG, "Media was not mounted");
return STATE_SD_CARD_UNMOUONTED;
}
PrintStream ps = getExportToTextPrintStream();
if (ps == null) {
Log.e(TAG, "get print stream error");
return STATE_SYSTEM_ERROR;
}
// First export folder and its notes 导出文件夹，就是导出里面包含的便签
Cursor folderCursor = mContext.getContentResolver().query(
Notes.CONTENT_NOTE_URI,
NOTE_PROJECTION,
"(" + NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER + " AND "
+ NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER + ") OR "
+ NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER, null, null);
if (folderCursor != null) {
if (folderCursor.moveToFirst()) {
do {
// Print folder's name
String folderName = "";
if(folderCursor.getLong(NOTE_COLUMN_ID) == Notes.ID_CALL_RECORD_FOLDER) {
folderName = mContext.getString(R.string.call_record_folder_name);
} else {
folderName = folderCursor.getString(NOTE_COLUMN_SNIPPET);
}
if (!TextUtils.isEmpty(folderName)) {
ps.println(String.format(getFormat(FORMAT_FOLDER_NAME), folderName));
}
String folderId = folderCursor.getString(NOTE_COLUMN_ID);
exportFolderToText(folderId, ps);
} while (folderCursor.moveToNext());
}
folderCursor.close();
}
// Export notes in root's folder
//将根目录里的文件导出（由于不属于任何文件夹，因此无法通过文件夹导出来实现这一部分便签的导出）
Cursor noteCursor = mContext.getContentResolver().query(
Notes.CONTENT_NOTE_URI,
NOTE_PROJECTION,
NoteColumns.TYPE + "=" + +Notes.TYPE_NOTE + " AND " + NoteColumns.PARENT_ID
+ "=0", null, null);
if (noteCursor != null) {
if (noteCursor.moveToFirst()) {
do {
ps.println(String.format(getFormat(FORMAT_NOTE_DATE), DateFormat.format(
mContext.getString(R.string.format_datetime_mdhm),
noteCursor.getLong(NOTE_COLUMN_MODIFIED_DATE))));
// Query data belong to this note
String noteId = noteCursor.getString(NOTE_COLUMN_ID);
exportNoteToText(noteId, ps);
} while (noteCursor.moveToNext());
}
noteCursor.close();
}
ps.close();
return STATE_SUCCESS;
}
/**
* Get a print stream pointed to the file {@generateExportedTextFile}
*/
private PrintStream getExportToTextPrintStream() {
File file = generateFileMountedOnSDcard(mContext, R.string.file_path,
R.string.file_name_txt_format);
if (file == null) {
Log.e(TAG, "create file to exported failed");
return null;
}
mFileName = file.getName();
mFileDirectory = mContext.getString(R.string.file_path);
PrintStream ps = null;
try {
FileOutputStream fos = new FileOutputStream(file);
ps = new PrintStream(fos);//将ps输出流输出到特定的文件，目的就是导出到文件，而不是直接输出
} catch (FileNotFoundException e) {
e.printStackTrace();
return null;
} catch (NullPointerException e) {
e.printStackTrace();
return null;
}
return ps;
}
}
/**
* Generate the text file to store imported data
*/
private static File generateFileMountedOnSDcard(Context context, int filePathResId, int fileNameFormatResId) {
StringBuilder sb = new StringBuilder();
sb.append(Environment.getExternalStorageDirectory());//外部（SD卡）的存储路径
sb.append(context.getString(filePathResId));//文件的存储路径
File filedir = new File(sb.toString());//filedir应该就是用来存储路径信息
sb.append(context.getString(
fileNameFormatResId,
DateFormat.format(context.getString(R.string.format_date_ymd),
System.currentTimeMillis())));
File file = new File(sb.toString());
try {//如果这些文件不存在，则新建
if (!filedir.exists()) {
filedir.mkdir();
}
if (!file.exists()) {
file.createNewFile();
}
return file;
} catch (SecurityException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
//try catch 异常处理
return null;
}
}

78
Contact.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.data;
import android.content.Context;
import android.database.Cursor;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.provider.ContactsContract.Data;
import android.telephony.PhoneNumberUtils;
import android.util.Log;
import java.util.HashMap;
public class Contact {//联系人
private static HashMap<String, String> sContactCache;
private static final String TAG = "Contact";
// 定义字符串CALLER_ID_SELECTION
private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER
+ ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'"
+ " AND " + Data.RAW_CONTACT_ID + " IN "
+ "(SELECT raw_contact_id "
+ " FROM phone_lookup"
+ " WHERE min_match = '+')";
// 获取联系人
public static String getContact(Context context, String phoneNumber) {
if(sContactCache == null) {
sContactCache = new HashMap<String, String>();
}
// 查找HashMap中是否已有phoneNumber信息
if(sContactCache.containsKey(phoneNumber)) {
return sContactCache.get(phoneNumber);
}
String selection = CALLER_ID_SELECTION.replace("+",
PhoneNumberUtils.toCallerIDMinMatch(phoneNumber));
// 查找数据库中phoneNumber的信息
Cursor cursor = context.getContentResolver().query(
Data.CONTENT_URI,
new String [] { Phone.DISPLAY_NAME },
selection,
new String[] { phoneNumber },
null);
// 判定查询结果
// moveToFirst()返回第一条
if (cursor != null && cursor.moveToFirst()) {
try {
// 找到相关信息
String name = cursor.getString(0);
sContactCache.put(phoneNumber, name);
return name;
//异常
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, " Cursor get string error " + e.toString());
return null;
} finally {
cursor.close();
}
// 未找到相关信息
} else {
Log.d(TAG, "No contact matched with number:" + phoneNumber);
return null;
}
}
}

297
DataUtils.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.tool;
import android.content.ContentProviderOperation;
import android.content.ContentProviderResult;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.OperationApplicationException;
import android.database.Cursor;
import android.os.RemoteException;
import android.util.Log;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.CallNote;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute;
import java.util.ArrayList;
import java.util.HashSet;
public class DataUtils {
public static final String TAG = "DataUtils";
public static boolean batchDeleteNotes(ContentResolver resolver, HashSet<Long> ids) {//直接删除多个笔记
if (ids == null) {
Log.d(TAG, "the ids is null");
return true;
}
if (ids.size() == 0) {
Log.d(TAG, "no id is in the hashset");
return true;
}
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();//提供一个任务列表
for (long id : ids) {
if(id == Notes.ID_ROOT_FOLDER) {
Log.e(TAG, "Don't delete system folder root");
continue;
}//如果发现是根文件夹，则不删除
ContentProviderOperation.Builder builder = ContentProviderOperation
.newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));//用newDelete实现删除功能
operationList.add(builder.build());
}
try {
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);//主机名（或叫AUTHORITY）用以唯一标识这个ContentProvider，
//外部调用者可以根据这个标识来找到它。
//数据库事务，数据库事务是由一组数据库操作序列组成，事务作为一个整体被执行
if (results == null || results.length == 0 || results[0] == null) {
Log.d(TAG, "delete notes failed, ids:" + ids.toString());
return false;
}
return true;
} catch (RemoteException e) {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
} catch (OperationApplicationException e) {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
}
return false;
}
public static void moveNoteToFoler(ContentResolver resolver, long id, long srcFolderId, long desFolderId) {
ContentValues values = new ContentValues();
values.put(NoteColumns.PARENT_ID, desFolderId);
values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId);
values.put(NoteColumns.LOCAL_MODIFIED, 1);
resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null);//对需要移动的便签进行数据更新，然后用update实现
}
public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids,
long folderId) {
if (ids == null) {
Log.d(TAG, "the ids is null");
return true;
}
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
for (long id : ids) {
ContentProviderOperation.Builder builder = ContentProviderOperation
.newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));//通过withAppendedId方法，为该uri加上id
builder.withValue(NoteColumns.PARENT_ID, folderId);
builder.withValue(NoteColumns.LOCAL_MODIFIED, 1);
operationList.add(builder.build());
}//将ids里包含的每一列的数据逐次加入到operationList中，等待最后的批量处理
try {
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);//applyBatch一次性处理一个操作列表
if (results == null || results.length == 0 || results[0] == null) {
Log.d(TAG, "delete notes failed, ids:" + ids.toString());
return false;
}
return true;
} catch (RemoteException e) {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
} catch (OperationApplicationException e) {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
}
return false;
}
/**
* Get the all folder count except system folders {@link Notes#TYPE_SYSTEM}}
*/
public static int getUserFolderCount(ContentResolver resolver) {
Cursor cursor =resolver.query(Notes.CONTENT_NOTE_URI,
new String[] { "COUNT(*)" },
NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>?",
new String[] { String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER)},
null);//筛选条件：源文件不为trash folder
int count = 0;
if(cursor != null) {
if(cursor.moveToFirst()) {
try {
count = cursor.getInt(0);
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, "get folder count failed:" + e.toString());
} finally {
cursor.close();
}
}
}
return count;
}
public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) {
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),//通过withAppendedId方法，为该uri加上id
null,
NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER,
new String [] {String.valueOf(type)},
null);//查询条件：type符合，且不属于垃圾文件夹
boolean exist = false;
if (cursor != null) {
if (cursor.getCount() > 0) {//用getcount函数判断cursor是否为空
exist = true;
}
cursor.close();
}
return exist;
}
public static boolean existInNoteDatabase(ContentResolver resolver, long noteId) {
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
null, null, null, null);
boolean exist = false;
if (cursor != null) {
if (cursor.getCount() > 0) {
exist = true;
}
cursor.close();
}
return exist;
}
public static boolean existInDataDatabase(ContentResolver resolver, long dataId) {
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId),
null, null, null, null);
//通过名字查询文件是否存在
boolean exist = false;
if (cursor != null) {
if (cursor.getCount() > 0) {
exist = true;
}
cursor.close();
}
return exist;
}
public static boolean checkVisibleFolderName(ContentResolver resolver, String name) {
Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI, null,
NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER +
" AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER +
" AND " + NoteColumns.SNIPPET + "=?",
new String[] { name }, null);
boolean exist = false;
if(cursor != null) {
if(cursor.getCount() > 0) {
exist = true;
}
cursor.close();
}
return exist;
}
public static HashSet<AppWidgetAttribute> getFolderNoteWidget(ContentResolver resolver, long folderId) {
Cursor c = resolver.query(Notes.CONTENT_NOTE_URI,
new String[] { NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE },
NoteColumns.PARENT_ID + "=?",
new String[] { String.valueOf(folderId) },
null);//查询条件：父id是传入的folderId
HashSet<AppWidgetAttribute> set = null;
if (c != null) {
if (c.moveToFirst()) {
set = new HashSet<AppWidgetAttribute>();
do {
try {
AppWidgetAttribute widget = new AppWidgetAttribute();
widget.widgetId = c.getInt(0);//0对应的NoteColumns.WIDGET_ID
widget.widgetType = c.getInt(1);//1对应的NoteColumns.WIDGET_TYPE
set.add(widget);
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, e.toString());
}
} while (c.moveToNext());//查询下一条
}
c.close();
}
return set;
}
public static String getCallNumberByNoteId(ContentResolver resolver, long noteId) {
Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
new String [] { CallNote.PHONE_NUMBER },
CallNote.NOTE_ID + "=? AND " + CallNote.MIME_TYPE + "=?",
new String [] { String.valueOf(noteId), CallNote.CONTENT_ITEM_TYPE },
null);
if (cursor != null && cursor.moveToFirst()) {
try {
return cursor.getString(0);
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, "Get call number fails " + e.toString());
} finally {
cursor.close();
}
}
return "";
}
public static long getNoteIdByPhoneNumberAndCallDate(ContentResolver resolver, String phoneNumber, long callDate) {
Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
new String [] { CallNote.NOTE_ID },
CallNote.CALL_DATE + "=? AND " + CallNote.MIME_TYPE + "=? AND PHONE_NUMBERS_EQUAL("
+ CallNote.PHONE_NUMBER + ",?)",
new String [] { String.valueOf(callDate), CallNote.CONTENT_ITEM_TYPE, phoneNumber },
null);
//通过数据库操作，查询条件是（CallNote和PhoneNumber匹配传入参数的值）
if (cursor != null) {
if (cursor.moveToFirst()) {
try {
return cursor.getLong(0);//0对应的CallNote.NOTE_ID
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, "Get call note id fails " + e.toString());
}
}
cursor.close();
}
return 0;
}
public static String getSnippetById(ContentResolver resolver, long noteId) {
Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI,
new String [] { NoteColumns.SNIPPET },
NoteColumns.ID + "=?",
new String [] { String.valueOf(noteId)},
null);//查询数据：noteId
if (cursor != null) {
String snippet = "";
if (cursor.moveToFirst()) {
snippet = cursor.getString(0);
}
cursor.close();
return snippet;
}
throw new IllegalArgumentException("Note is not found with id: " + noteId);
}
public static String getFormattedSnippet(String snippet) {//对字符串进行格式处理，将字符串两头的空格去掉，同时将换行符去掉
if (snippet != null) {
snippet = snippet.trim();
int index = snippet.indexOf('\n');
if (index != -1) {
snippet = snippet.substring(0, index);
}
}
return snippet;
}
}

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@ -1,505 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import java.text.DateFormatSymbols;
import java.util.Calendar;
import net.micode.notes.R;
import android.content.Context;
import android.text.format.DateFormat;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.NumberPicker;
public class DateTimePicker extends FrameLayout {
//FrameLayout是布局模板之一
//所有的子元素全部在屏幕的右上方
private static final boolean DEFAULT_ENABLE_STATE = true;
private static final int HOURS_IN_HALF_DAY = 12;
private static final int HOURS_IN_ALL_DAY = 24;
private static final int DAYS_IN_ALL_WEEK = 7;
private static final int DATE_SPINNER_MIN_VAL = 0;
private static final int DATE_SPINNER_MAX_VAL = DAYS_IN_ALL_WEEK - 1;
private static final int HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW = 0;
private static final int HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW = 23;
private static final int HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW = 1;
private static final int HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW = 12;
private static final int MINUT_SPINNER_MIN_VAL = 0;
private static final int MINUT_SPINNER_MAX_VAL = 59;
private static final int AMPM_SPINNER_MIN_VAL = 0;
private static final int AMPM_SPINNER_MAX_VAL = 1;
//初始化控件
private final NumberPicker mDateSpinner;
private final NumberPicker mHourSpinner;
private final NumberPicker mMinuteSpinner;
private final NumberPicker mAmPmSpinner;
//NumberPicker是数字选择器
//这里定义的四个变量全部是在设置闹钟时需要选择的变量（如日期、时、分、上午或者下午）
private Calendar mDate;
//定义了Calendar类型的变量mDate，用于操作时间
private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];
private boolean mIsAm;
private boolean mIs24HourView;
private boolean mIsEnabled = DEFAULT_ENABLE_STATE;
private boolean mInitialising;
private OnDateTimeChangedListener mOnDateTimeChangedListener;
private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() {
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal);
updateDateControl();
onDateTimeChanged();
}
};//OnValueChangeListener，这是时间改变监听器，这里主要是对日期的监听
//将现在日期的值传递给mDate；updateDateControl是同步操作
private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() {
//这里是对 小时（Hour） 的监听
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
boolean isDateChanged = false;
Calendar cal = Calendar.getInstance();
//声明一个Calendar的变量cal，便于后续的操作
if (!mIs24HourView) {
if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) {
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, 1);
isDateChanged = true;
//这里是对于12小时制时，晚上11点和12点交替时对日期的更改
} else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, -1);
isDateChanged = true;
}
//这里是对于12小时制时，凌晨11点和12点交替时对日期的更改
if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY ||
oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
mIsAm = !mIsAm;
updateAmPmControl();
}//这里是对于12小时制时，中午11点和12点交替时对AM和PM的更改
} else {
if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) {
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, 1);
isDateChanged = true;
//这里是对于24小时制时，晚上11点和12点交替时对日期的更改
} else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) {
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, -1);
isDateChanged = true;
}
}//这里是对于12小时制时，凌晨11点和12点交替时对日期的更改
int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY);
//通过数字选择器对newHour的赋值
mDate.set(Calendar.HOUR_OF_DAY, newHour);
//通过set函数将新的Hour值传给mDate
onDateTimeChanged();
if (isDateChanged) {
setCurrentYear(cal.get(Calendar.YEAR));
setCurrentMonth(cal.get(Calendar.MONTH));
setCurrentDay(cal.get(Calendar.DAY_OF_MONTH));
}
}
};
private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() {
@Override
//这里是对 分钟（Minute）改变的监听
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
int minValue = mMinuteSpinner.getMinValue();
int maxValue = mMinuteSpinner.getMaxValue();
int offset = 0;
//设置offset，作为小时改变的一个记录数据
if (oldVal == maxValue && newVal == minValue) {
offset += 1;
} else if (oldVal == minValue && newVal == maxValue) {
offset -= 1;
}
//如果原值为59，新值为0，则offset加1
//如果原值为0，新值为59，则offset减1
if (offset != 0) {
mDate.add(Calendar.HOUR_OF_DAY, offset);
mHourSpinner.setValue(getCurrentHour());
updateDateControl();
int newHour = getCurrentHourOfDay();
if (newHour >= HOURS_IN_HALF_DAY) {
mIsAm = false;
updateAmPmControl();
} else {
mIsAm = true;
updateAmPmControl();
}
}
mDate.set(Calendar.MINUTE, newVal);
onDateTimeChanged();
}
};
private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() {
//对AM和PM的监听
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
mIsAm = !mIsAm;
if (mIsAm) {
mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY);
} else {
mDate.add(Calendar.HOUR_OF_DAY, HOURS_IN_HALF_DAY);
}
updateAmPmControl();
onDateTimeChanged();
}
};
public interface OnDateTimeChangedListener {
void onDateTimeChanged(DateTimePicker view, int year, int month,
int dayOfMonth, int hourOfDay, int minute);
}
public DateTimePicker(Context context) {
this(context, System.currentTimeMillis());
}//通过对数据库的访问，获取当前的系统时间
public DateTimePicker(Context context, long date) {
this(context, date, DateFormat.is24HourFormat(context));
}//上面函数的得到的是一个天文数字（1970至今的秒数），需要DateFormat将其变得有意义
public DateTimePicker(Context context, long date, boolean is24HourView) {
super(context);
//获取系统时间
mDate = Calendar.getInstance();
mInitialising = true;
mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY;
inflate(context, R.layout.datetime_picker, this);
//如果当前Activity里用到别的layout，比如对话框layout
//还要设置这个layout上的其他组件的内容，就必须用inflate()方法先将对话框的layout找出来
//然后再用findViewById()找到它上面的其它组件
mDateSpinner = (NumberPicker) findViewById(R.id.date);
mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL);
mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL);
mDateSpinner.setOnValueChangedListener(mOnDateChangedListener);
mHourSpinner = (NumberPicker) findViewById(R.id.hour);
mHourSpinner.setOnValueChangedListener(mOnHourChangedListener);
mMinuteSpinner = (NumberPicker) findViewById(R.id.minute);
mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL);
mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL);
mMinuteSpinner.setOnLongPressUpdateInterval(100);
mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener);
String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings();
mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm);
mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL);
mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL);
mAmPmSpinner.setDisplayedValues(stringsForAmPm);
mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);
// update controls to initial state
updateDateControl();
updateHourControl();
updateAmPmControl();
set24HourView(is24HourView);
// set to current time
setCurrentDate(date);
setEnabled(isEnabled());
// set the content descriptions
mInitialising = false;
}
@Override
public void setEnabled(boolean enabled) {
if (mIsEnabled == enabled) {
return;
}
super.setEnabled(enabled);
mDateSpinner.setEnabled(enabled);
mMinuteSpinner.setEnabled(enabled);
mHourSpinner.setEnabled(enabled);
mAmPmSpinner.setEnabled(enabled);
mIsEnabled = enabled;
}
//下面的各函数主要是对上面代码引用到的个函数功能的实现
@Override
public boolean isEnabled() {
return mIsEnabled;
}
/**
* Get the current date in millis
*
* @return the current date in millis
*/
public long getCurrentDateInTimeMillis() {
return mDate.getTimeInMillis();
}//实现函数——得到当前的秒数
/**
* Set the current date
*
* @param date The current date in millis
*/
public void setCurrentDate(long date) {
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(date);
setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH),
cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE));
}//实现函数功能——设置当前的时间，参数是date
/**
* Set the current date
*
* @param year The current year
* @param month The current month
* @param dayOfMonth The current dayOfMonth
* @param hourOfDay The current hourOfDay
* @param minute The current minute
*/
public void setCurrentDate(int year, int month,
int dayOfMonth, int hourOfDay, int minute) {
setCurrentYear(year);
setCurrentMonth(month);
setCurrentDay(dayOfMonth);
setCurrentHour(hourOfDay);
setCurrentMinute(minute);
}//实现函数功能——设置当前的时间，参数是各详细的变量
/**
* Get current year
*
* @return The current year
*/
//下面是得到year、month、day等值
public int getCurrentYear() {
return mDate.get(Calendar.YEAR);
}
/**
* Set current year
*
* @param year The current year
*/
public void setCurrentYear(int year) {
if (!mInitialising && year == getCurrentYear()) {
return;
}
mDate.set(Calendar.YEAR, year);
updateDateControl();
onDateTimeChanged();
}
/**
* Get current month in the year
*
* @return The current month in the year
*/
public int getCurrentMonth() {
return mDate.get(Calendar.MONTH);
}
/**
* Set current month in the year
*
* @param month The month in the year
*/
public void setCurrentMonth(int month) {
if (!mInitialising && month == getCurrentMonth()) {
return;
}
mDate.set(Calendar.MONTH, month);
updateDateControl();
onDateTimeChanged();
}
/**
* Get current day of the month
*
* @return The day of the month
*/
public int getCurrentDay() {
return mDate.get(Calendar.DAY_OF_MONTH);
}
/**
* Set current day of the month
*
* @param dayOfMonth The day of the month
*/
public void setCurrentDay(int dayOfMonth) {
if (!mInitialising && dayOfMonth == getCurrentDay()) {
return;
}
mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
updateDateControl();
onDateTimeChanged();
}
/**
* Get current hour in 24 hour mode, in the range (0~23)
* @return The current hour in 24 hour mode
*/
public int getCurrentHourOfDay() {
return mDate.get(Calendar.HOUR_OF_DAY);
}
private int getCurrentHour() {
if (mIs24HourView){
return getCurrentHourOfDay();
} else {
int hour = getCurrentHourOfDay();
if (hour > HOURS_IN_HALF_DAY) {
return hour - HOURS_IN_HALF_DAY;
} else {
return hour == 0 ? HOURS_IN_HALF_DAY : hour;
}
}
}
/**
* Set current hour in 24 hour mode, in the range (0~23)
*
* @param hourOfDay
*/
public void setCurrentHour(int hourOfDay) {
if (!mInitialising && hourOfDay == getCurrentHourOfDay()) {
return;
}
mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
if (!mIs24HourView) {
if (hourOfDay >= HOURS_IN_HALF_DAY) {
mIsAm = false;
if (hourOfDay > HOURS_IN_HALF_DAY) {
hourOfDay -= HOURS_IN_HALF_DAY;
}
} else {
mIsAm = true;
if (hourOfDay == 0) {
hourOfDay = HOURS_IN_HALF_DAY;
}
}
updateAmPmControl();
}
mHourSpinner.setValue(hourOfDay);
onDateTimeChanged();
}
/**
* Get currentMinute
*
* @return The Current Minute
*/
public int getCurrentMinute() {
return mDate.get(Calendar.MINUTE);
}
/**
* Set current minute
*/
public void setCurrentMinute(int minute) {
if (!mInitialising && minute == getCurrentMinute()) {
return;
}
mMinuteSpinner.setValue(minute);
mDate.set(Calendar.MINUTE, minute);
onDateTimeChanged();
}
/**
* @return true if this is in 24 hour view else false.
*/
public boolean is24HourView () {
return mIs24HourView;
}
/**
* Set whether in 24 hour or AM/PM mode.
*
* @param is24HourView True for 24 hour mode. False for AM/PM mode.
*/
public void set24HourView(boolean is24HourView) {
if (mIs24HourView == is24HourView) {
return;
}
mIs24HourView = is24HourView;
mAmPmSpinner.setVisibility(is24HourView ? View.GONE : View.VISIBLE);
int hour = getCurrentHourOfDay();
updateHourControl();
setCurrentHour(hour);
updateAmPmControl();
}
private void updateDateControl() {
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, -DAYS_IN_ALL_WEEK / 2 - 1);
mDateSpinner.setDisplayedValues(null);
for (int i = 0; i < DAYS_IN_ALL_WEEK; ++i) {
cal.add(Calendar.DAY_OF_YEAR, 1);
mDateDisplayValues[i] = (String) DateFormat.format("MM.dd EEEE", cal);
}
mDateSpinner.setDisplayedValues(mDateDisplayValues);
mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2);
mDateSpinner.invalidate();
}//对于星期几的算法
private void updateAmPmControl() {
if (mIs24HourView) {
mAmPmSpinner.setVisibility(View.GONE);
} else {
int index = mIsAm ? Calendar.AM : Calendar.PM;
mAmPmSpinner.setValue(index);
mAmPmSpinner.setVisibility(View.VISIBLE);
}//对于上下午操作的算法
}
private void updateHourControl() {
if (mIs24HourView) {
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW);
mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW);
} else {
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW);
mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW);
}//对于小时的算法
}
/**
* Set the callback that indicates the 'Set' button has been pressed.
* @param callback the callback, if null will do nothing
*/
public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) {
mOnDateTimeChangedListener = callback;
}
private void onDateTimeChanged() {
if (mOnDateTimeChangedListener != null) {
mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(),
getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute());
}
}
}

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DateTimePickerDialog.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import java.util.Calendar;
import net.micode.notes.R;
import net.micode.notes.ui.DateTimePicker;
import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.text.format.DateFormat;
import android.text.format.DateUtils;
public class DateTimePickerDialog extends AlertDialog implements OnClickListener {
private Calendar mDate = Calendar.getInstance();
//创建一个Calendar类型的变量 mDate，方便时间的操作
private boolean mIs24HourView;
private OnDateTimeSetListener mOnDateTimeSetListener;
//声明一个时间日期滚动选择控件 mOnDateTimeSetListener
private DateTimePicker mDateTimePicker;
//DateTimePicker控件，控件一般用于让用户可以从日期列表中选择单个值。
//运行时，单击控件边上的下拉箭头，会显示为两个部分：一个下拉列表，一个用于选择日期的
public interface OnDateTimeSetListener {
void OnDateTimeSet(AlertDialog dialog, long date);
}
public DateTimePickerDialog(Context context, long date) {
//对该界面对话框的实例化
super(context);
//对数据库的操作
mDateTimePicker = new DateTimePicker(context);
setView(mDateTimePicker);
//添加一个子视图
mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() {
public void onDateTimeChanged(DateTimePicker view, int year, int month,
int dayOfMonth, int hourOfDay, int minute) {
mDate.set(Calendar.YEAR, year);
mDate.set(Calendar.MONTH, month);
mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
mDate.set(Calendar.MINUTE, minute);
//将视图中的各选项设置为系统当前时间
updateTitle(mDate.getTimeInMillis());
}
});
mDate.setTimeInMillis(date);
//得到系统时间
mDate.set(Calendar.SECOND, 0);
//将秒数设置为0
mDateTimePicker.setCurrentDate(mDate.getTimeInMillis());
setButton(context.getString(R.string.datetime_dialog_ok), this);
setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
//设置按钮
set24HourView(DateFormat.is24HourFormat(this.getContext()));
//时间标准化打印
updateTitle(mDate.getTimeInMillis());
}
public void set24HourView(boolean is24HourView) {
mIs24HourView = is24HourView;
}
public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) {
mOnDateTimeSetListener = callBack;
}//时间标准化打印
private void updateTitle(long date) {
int flag =
DateUtils.FORMAT_SHOW_YEAR |
DateUtils.FORMAT_SHOW_DATE |
DateUtils.FORMAT_SHOW_TIME;
flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_24HOUR;
setTitle(DateUtils.formatDateTime(this.getContext(), date, flag));
}//android开发中常见日期管理工具类（API）——DateUtils：按照上下午显示时间
public void onClick(DialogInterface arg0, int arg1) {
if (mOnDateTimeSetListener != null) {
mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());
}
}
//第一个参数arg0是接收到点击事件的对话框
//第二个参数arg1是该对话框上的按钮
}

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DropdownMenu.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import android.content.Context;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.PopupMenu;
import android.widget.PopupMenu.OnMenuItemClickListener;
import net.micode.notes.R;
public class DropdownMenu {
private Button mButton;
private PopupMenu mPopupMenu;
//声明一个下拉菜单
private Menu mMenu;
public DropdownMenu(Context context, Button button, int menuId) {
mButton = button;
mButton.setBackgroundResource(R.drawable.dropdown_icon);
//设置这个view的背景
mPopupMenu = new PopupMenu(context, mButton);
mMenu = mPopupMenu.getMenu();
mPopupMenu.getMenuInflater().inflate(menuId, mMenu);
//MenuInflater是用来实例化Menu目录下的Menu布局文件
//根据ID来确认menu的内容选项
mButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
mPopupMenu.show();
}
});
}
public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) {
if (mPopupMenu != null) {
mPopupMenu.setOnMenuItemClickListener(listener);
}//设置菜单的监听
}
public MenuItem findItem(int id) {
return mMenu.findItem(id);
}//对于菜单选项的初始化，根据索引搜索菜单需要的选项
public void setTitle(CharSequence title) {
mButton.setText(title);
}//布局文件，设置标题
}

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FoldersListAdapter.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import android.content.Context;
import android.database.Cursor;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CursorAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;
public class FoldersListAdapter extends CursorAdapter {
//CursorAdapter是Cursor和ListView的接口
//FoldersListAdapter继承了CursorAdapter的类
//主要作用是便签数据库和用户的交互
//这里就是用folder（文件夹）的形式展现给用户
public static final String [] PROJECTION = {
NoteColumns.ID,
NoteColumns.SNIPPET
};//调用数据库中便签的ID和片段
public static final int ID_COLUMN = 0;
public static final int NAME_COLUMN = 1;
public FoldersListAdapter(Context context, Cursor c) {
super(context, c);
// TODO Auto-generated constructor stub
}//数据库操作
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
//ViewGroup是容器
return new FolderListItem(context);
}//创建一个文件夹，对于各文件夹中子标签的初始化
@Override
public void bindView(View view, Context context, Cursor cursor) {
if (view instanceof FolderListItem) {
String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
.getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
((FolderListItem) view).bind(folderName);
}
}//将各个布局文件绑定起来
public String getFolderName(Context context, int position) {
Cursor cursor = (Cursor) getItem(position);
return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
.getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
}//根据数据库中标签的ID得到标签的各项内容
private class FolderListItem extends LinearLayout {
private TextView mName;
public FolderListItem(Context context) {
super(context);
//操作数据库
inflate(context, R.layout.folder_list_item, this);
// //根据布局文件的名字等信息将其找出来
mName = (TextView) findViewById(R.id.tv_folder_name);
}
public void bind(String name) {
mName.setText(name);
}
}
}

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GTaskASyncTask.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.gtask.remote;
/*异步操作类，实现GTask的异步操作过程
* 主要方法：
* private void showNotification(int tickerId, String content) 向用户提示当前同步的状态，是一个用于交互的方法
* protected Integer doInBackground(Void... unused) 此方法在后台线程执行，完成任务的主要工作，通常需要较长的时间
* protected void onProgressUpdate(String... progress) 可以使用进度条增加用户体验度。 此方法在主线程执行，用于显示任务执行的进度。
* protected void onPostExecute(Integer result) 相当于Handler 处理UI的方式，在这里面可以使用在doInBackground 得到的结果处理操作UI
*/
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import net.micode.notes.R;
import net.micode.notes.ui.NotesListActivity;
import net.micode.notes.ui.NotesPreferenceActivity;
public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
private static int GTASK_SYNC_NOTIFICATION_ID = 5234235;
public interface OnCompleteListener {
void onComplete();
}
private Context mContext;
private NotificationManager mNotifiManager;
private GTaskManager mTaskManager;
private OnCompleteListener mOnCompleteListener;
public GTaskASyncTask(Context context, OnCompleteListener listener) {
mContext = context;
mOnCompleteListener = listener;
mNotifiManager = (NotificationManager) mContext
.getSystemService(Context.NOTIFICATION_SERVICE);
mTaskManager = GTaskManager.getInstance();
}
public void cancelSync() {
mTaskManager.cancelSync();
}
public void publishProgess(String message) {/// 发布进度单位，系统将会调用onProgressUpdate()方法更新这些值
publishProgress(new String[] {
message
});
}
private void showNotification(int tickerId, String content) {
Notification notification = new Notification(R.drawable.notification, mContext
.getString(tickerId), System.currentTimeMillis());
notification.defaults = Notification.DEFAULT_LIGHTS;// 调用系统自带灯光
notification.flags = Notification.FLAG_AUTO_CANCEL; // 点击清除按钮或点击通知后会自动消失
PendingIntent pendingIntent; //一个描述了想要启动一个Activity、Broadcast或是Service的意图
if (tickerId != R.string.ticker_success) {
pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
NotesPreferenceActivity.class), 0);//如果同步不成功，那么从系统取得一个用于启动一个NotesPreferenceActivity的PendingIntent对象
} else {
pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
NotesListActivity.class), 0); //如果同步成功，那么从系统取得一个用于启动一个NotesListActivity的PendingIntent对象
}
notification.setLatestEventInfo(mContext, mContext.getString(R.string.app_name), content,
pendingIntent);
mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification);//通过NotificationManager对象的notify（）方法来执行一个notification的消息
}
@Override
protected Integer doInBackground(Void... unused) {
publishProgess(mContext.getString(R.string.sync_progress_login, NotesPreferenceActivity
.getSyncAccountName(mContext)));//利用getString,将把 NotesPreferenceActivity.getSyncAccountName(mContext))的字符串内容传进sync_progress_login中
return mTaskManager.sync(mContext, this); //进行后台同步具体操作
}
@Override
protected void onProgressUpdate(String... progress) {
showNotification(R.string.ticker_syncing, progress[0]);
if (mContext instanceof GTaskSyncService) {//instanceof 判断mContext是否是GTaskSyncService的实例
((GTaskSyncService) mContext).sendBroadcast(progress[0]);
}
}
@Override
protected void onPostExecute(Integer result) {//用于在执行完后台任务后更新UI,显示结果
if (result == GTaskManager.STATE_SUCCESS) {
showNotification(R.string.ticker_success, mContext.getString(
R.string.success_sync_account, mTaskManager.getSyncAccount()));
NotesPreferenceActivity.setLastSyncTime(mContext, System.currentTimeMillis());//设置最新同步的时间
} else if (result == GTaskManager.STATE_NETWORK_ERROR) {
showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_network));
} else if (result == GTaskManager.STATE_INTERNAL_ERROR) {
showNotification(R.string.ticker_fail, mContext.getString(R.string.error_sync_internal));
} else if (result == GTaskManager.STATE_SYNC_CANCELLED) {
showNotification(R.string.ticker_cancel, mContext
.getString(R.string.error_sync_cancelled));
}//几种不同情况下的结果显示
if (mOnCompleteListener != null) {
new Thread(new Runnable() {//这里好像是方法内的一个线程
public void run() {//完成后的操作，使用onComplete()将所有值都重新初始化，相当于完成一次操作
mOnCompleteListener.onComplete();
}
}).start();
}
}
}

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GTaskClient.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.gtask.remote;
import android.accounts.Account;
import android.accounts.AccountManager;
import android.accounts.AccountManagerFuture;
import android.app.Activity;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import net.micode.notes.gtask.data.Node;
import net.micode.notes.gtask.data.Task;
import net.micode.notes.gtask.data.TaskList;
import net.micode.notes.gtask.exception.ActionFailureException;
import net.micode.notes.gtask.exception.NetworkFailureException;
import net.micode.notes.tool.GTaskStringUtils;
import net.micode.notes.ui.NotesPreferenceActivity;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.LinkedList;
import java.util.List;
import java.util.zip.GZIPInputStream;
import java.util.zip.Inflater;
import java.util.zip.InflaterInputStream;
/*
* 主要功能：实现GTASK的登录操作，进行GTASK任务的创建，创建任务列表，从网络上获取任务和任务列表的内容
* 主要使用类或技术：accountManager JSONObject HttpParams authToken Gid
*/
public class GTaskClient {
private static final String TAG = GTaskClient.class.getSimpleName();
private static final String GTASK_URL = "https://mail.google.com/tasks/";//这个是指定的URL
private static final String GTASK_GET_URL = "https://mail.google.com/tasks/ig";
private static final String GTASK_POST_URL = "https://mail.google.com/tasks/r/ig";
private static GTaskClient mInstance = null;
private DefaultHttpClient mHttpClient;
private String mGetUrl;
private String mPostUrl;
private long mClientVersion;
private boolean mLoggedin;
private long mLastLoginTime;
private int mActionId;
private Account mAccount;
private JSONArray mUpdateArray;
private GTaskClient() {
mHttpClient = null;
mGetUrl = GTASK_GET_URL;
mPostUrl = GTASK_POST_URL;
mClientVersion = -1;
mLoggedin = false;
mLastLoginTime = 0;
mActionId = 1;
mAccount = null;
mUpdateArray = null;
}
/*用来获取的实例化对象
* 使用 getInstance()
* 返回mInstance这个实例化对象
*/
public static synchronized GTaskClient getInstance() {
if (mInstance == null) {
mInstance = new GTaskClient();
}
return mInstance;
}
/*用来实现登录操作的函数，传入的参数是一个Activity
* 设置登录操作限制时间，如果超时则需要重新登录
* 有两种登录方式，使用用户自己的URL登录或者使用谷歌官方的URL登录
* 返回true或者false，即最后是否登陆成功
*/
public boolean login(Activity activity) {
// we suppose that the cookie would expire after 5 minutes
// then we need to re-login
//判断距离最后一次登录操作是否超过5分钟
final long interval = 1000 * 60 * 5;
if (mLastLoginTime + interval < System.currentTimeMillis()) {
mLoggedin = false;
}
// need to re-login after account switch 重新登录操作
if (mLoggedin
&& !TextUtils.equals(getSyncAccount().name, NotesPreferenceActivity
.getSyncAccountName(activity))) {
mLoggedin = false;
}
//如果没超过时间，则不需要重新登录
if (mLoggedin) {
Log.d(TAG, "already logged in");
return true;
}
mLastLoginTime = System.currentTimeMillis();//更新最后登录时间，改为系统当前的时间
String authToken = loginGoogleAccount(activity, false);//判断是否登录到谷歌账户
if (authToken == null) {
Log.e(TAG, "login google account failed");
return false;
}
// login with custom domain if necessary
//尝试使用用户自己的域名登录
if (!(mAccount.name.toLowerCase().endsWith("gmail.com") || mAccount.name.toLowerCase()//将用户账号名改为统一格式（小写）后判断是否为一个谷歌账号地址
.endsWith("googlemail.com"))) {
StringBuilder url = new StringBuilder(GTASK_URL).append("a/");
int index = mAccount.name.indexOf('@') + 1;
String suffix = mAccount.name.substring(index);
url.append(suffix + "/");
mGetUrl = url.toString() + "ig";//设置用户对应的getUrl
mPostUrl = url.toString() + "r/ig"; //设置用户对应的postUrl
if (tryToLoginGtask(activity, authToken)) {
mLoggedin = true;
}
}
// try to login with google official url
//如果用户账户无法登录，则使用谷歌官方的URI进行登录
if (!mLoggedin) {
mGetUrl = GTASK_GET_URL;
mPostUrl = GTASK_POST_URL;
if (!tryToLoginGtask(activity, authToken)) {
return false;
}
}
mLoggedin = true;
return true;
}
/*具体实现登录谷歌账户的方法
* 使用令牌机制
* 使用AccountManager来管理注册账号
* 返回值是账号的令牌
*/
private String loginGoogleAccount(Activity activity, boolean invalidateToken) {
String authToken; //令牌，是登录操作保证安全性的一个方法
AccountManager accountManager = AccountManager.get(activity);//AccountManager这个类给用户提供了集中注册账号的接口
Account[] accounts = accountManager.getAccountsByType("com.google");//获取全部以com.google结尾的account
if (accounts.length == 0) {
Log.e(TAG, "there is no available google account");
return null;
}
String accountName = NotesPreferenceActivity.getSyncAccountName(activity);
Account account = null;
//遍历获得的accounts信息，寻找已经记录过的账户信息
for (Account a : accounts) {
if (a.name.equals(accountName)) {
account = a;
break;
}
}
if (account != null) {
mAccount = account;
} else {
Log.e(TAG, "unable to get an account with the same name in the settings");
return null;
}
// get the token now
//获取选中账号的令牌
AccountManagerFuture<Bundle> accountManagerFuture = accountManager.getAuthToken(account,
"goanna_mobile", null, activity, null, null);
try {
Bundle authTokenBundle = accountManagerFuture.getResult();
authToken = authTokenBundle.getString(AccountManager.KEY_AUTHTOKEN);
//如果是invalidateToken，那么需要调用invalidateAuthToken(String, String)方法废除这个无效token
if (invalidateToken) {
accountManager.invalidateAuthToken("com.google", authToken);
loginGoogleAccount(activity, false);
}
} catch (Exception e) {
Log.e(TAG, "get auth token failed");
authToken = null;
}
return authToken;
}
//尝试登陆Gtask，这只是一个预先判断令牌是否是有效以及是否能登上GTask的方法,而不是具体实现登陆的方法
private boolean tryToLoginGtask(Activity activity, String authToken) {
if (!loginGtask(authToken)) {
// maybe the auth token is out of date, now let's invalidate the
// token and try again
//删除过一个无效的authToken，申请一个新的后再次尝试登陆
authToken = loginGoogleAccount(activity, true);
if (authToken == null) {
Log.e(TAG, "login google account failed");
return false;
}
if (!loginGtask(authToken)) {
Log.e(TAG, "login gtask failed");
return false;
}
}
return true;
}
//实现登录GTask的具体操作
private boolean loginGtask(String authToken) {
int timeoutConnection = 10000;
int timeoutSocket = 15000;//socket是一种通信连接实现数据的交换的端口
HttpParams httpParameters = new BasicHttpParams();//实例化一个新的HTTP参数类
HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);//设置连接超时时间
HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);//设置端口超时时间
mHttpClient = new DefaultHttpClient(httpParameters);
BasicCookieStore localBasicCookieStore = new BasicCookieStore();//设置本地cookie
mHttpClient.setCookieStore(localBasicCookieStore);
HttpProtocolParams.setUseExpectContinue(mHttpClient.getParams(), false);
// login gtask
try {
String loginUrl = mGetUrl + "?auth=" + authToken;//设置登陆的url
HttpGet httpGet = new HttpGet(loginUrl);//通过登录的url实例化网页上资源的查找
HttpResponse response = null;
response = mHttpClient.execute(httpGet);
// get the cookie now
//获取CookieStore里存放的cookie，如果存有“GTL”，则说明有验证成功的有效的cookie
List<Cookie> cookies = mHttpClient.getCookieStore().getCookies();
boolean hasAuthCookie = false;
for (Cookie cookie : cookies) {
if (cookie.getName().contains("GTL")) {
hasAuthCookie = true;
}
}
if (!hasAuthCookie) {
Log.w(TAG, "it seems that there is no auth cookie");
}
// get the client version
//获取client的内容，具体操作是在返回的Content中截取从_setup（开始到）}</script>中间的字符串内容，也就是gtask_url的内容
String resString = getResponseContent(response.getEntity());
String jsBegin = "_setup(";
String jsEnd = ")}</script>";
int begin = resString.indexOf(jsBegin);
int end = resString.lastIndexOf(jsEnd);
String jsString = null;
if (begin != -1 && end != -1 && begin < end) {
jsString = resString.substring(begin + jsBegin.length(), end);
}
JSONObject js = new JSONObject(jsString);
mClientVersion = js.getLong("v");
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
return false;
} catch (Exception e) {
// simply catch all exceptions
Log.e(TAG, "httpget gtask_url failed");
return false;
}
return true;
}
private int getActionId() {
return mActionId++;
}
/**实例化创建一个用于向网络传输数据的对象
* 使用HttpPost类，
* 返回一个httpPost实例化对象，但里面还没有内容
*/
private HttpPost createHttpPost() {
HttpPost httpPost = new HttpPost(mPostUrl);
httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
httpPost.setHeader("AT", "1");
return httpPost;
}
/**通过URL获取响应后返回的数据，也就是网络上的数据和资源
* 使用getContentEncoding（）获取网络上的资源和数据
* 返回值就是获取到的资源
*/
private String getResponseContent(HttpEntity entity) throws IOException {
String contentEncoding = null;
if (entity.getContentEncoding() != null) {//通过url得到HttpEntity对象，如果不为空则使用getContent（）方法创建一个流将数据从网络都过来
contentEncoding = entity.getContentEncoding().getValue();
Log.d(TAG, "encoding: " + contentEncoding);
}
InputStream input = entity.getContent();
if (contentEncoding != null && contentEncoding.equalsIgnoreCase("gzip")) {//gzip是使用deflate进行压缩数据的另一个压缩库
input = new GZIPInputStream(entity.getContent());
} else if (contentEncoding != null && contentEncoding.equalsIgnoreCase("deflate")) {//deflate是一个无专利的压缩算法，它可以实现无损数据压缩
Inflater inflater = new Inflater(true);
input = new InflaterInputStream(entity.getContent(), inflater);
}
try {
InputStreamReader isr = new InputStreamReader(input);
BufferedReader br = new BufferedReader(isr);//是一个包装类，它可以包装字符流，将字符流放入缓存中，先把字符读到缓存里，到缓存满了的时候，再读入内存，是为了提供读的效率而设计的
StringBuilder sb = new StringBuilder();
while (true) {
String buff = br.readLine();
if (buff == null) {
return sb.toString();
}
sb = sb.append(buff);
}
} finally {
input.close();
}
}
/**
* 通过JSON发送请求
* 请求的具体内容在json的实例化对象js中然后传入
* 利用UrlEncodedFormEntity entity和httpPost.setEntity(entity)方法把js中的内容放置到httpPost中
* 执行请求后使用getResponseContent方法得到返回的数据和资源
* 将资源再次放入json后返回
*/
private JSONObject postRequest(JSONObject js) throws NetworkFailureException {
if (!mLoggedin) {//未登录
Log.e(TAG, "please login first");
throw new ActionFailureException("not logged in");
}
//实例化一个httpPost的对象用来向服务器传输数据，在这里就是发送请求，而请求的内容在js里
HttpPost httpPost = createHttpPost();
try {
LinkedList<BasicNameValuePair> list = new LinkedList<BasicNameValuePair>();
list.add(new BasicNameValuePair("r", js.toString()));
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, "UTF-8");//UrlEncodedFormEntity（）的形式比较单一，是普通的键值对
httpPost.setEntity(entity);
// execute the post
//执行这个请求
HttpResponse response = mHttpClient.execute(httpPost);
String jsString = getResponseContent(response.getEntity());
return new JSONObject(jsString);
} catch (ClientProtocolException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new NetworkFailureException("postRequest failed");
} catch (IOException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new NetworkFailureException("postRequest failed");
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("unable to convert response content to jsonobject");
} catch (Exception e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("error occurs when posting request");
}
}
/**创建单个任务
* 传入参数是一个.gtask.data.Task包里Task类的对象
* 利用json获取Task里的内容，并且创建相应的jsPost
* 利用postRequest得到任务的返回信息
* 利用task.setGid设置task的new_ID
*/
public void createTask(Task task) throws NetworkFailureException {
commitUpdate();
try {
JSONObject jsPost = new JSONObject();
JSONArray actionList = new JSONArray();
// action_list
actionList.put(task.getCreateAction(getActionId()));
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
// client_version
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
// post
JSONObject jsResponse = postRequest(jsPost);
JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
task.setGid(jsResult.getString(GTaskStringUtils.GTASK_JSON_NEW_ID));
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("create task: handing jsonobject failed");
}
}
/**创建一个任务列表，与createTask几乎一样，区别就是最后设置的是tasklist的gid */
public void createTaskList(TaskList tasklist) throws NetworkFailureException {
commitUpdate();
try {
JSONObject jsPost = new JSONObject();
JSONArray actionList = new JSONArray();
// action_list
actionList.put(tasklist.getCreateAction(getActionId()));
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
// client version
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
// post
JSONObject jsResponse = postRequest(jsPost);
JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
tasklist.setGid(jsResult.getString(GTaskStringUtils.GTASK_JSON_NEW_ID));
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("create tasklist: handing jsonobject failed");
}
}
/**
* 同步更新操作
* 使用JSONObject进行数据存储，使用jsPost.put,Put的信息包括UpdateArray和ClientVersion
* 使用postRequest发送这个jspost，进行处理
*/
public void commitUpdate() throws NetworkFailureException {
if (mUpdateArray != null) {
try {
JSONObject jsPost = new JSONObject();
// action_list
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, mUpdateArray);
// client_version
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
postRequest(jsPost);
mUpdateArray = null;
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("commit update: handing jsonobject failed");
}
}
}
/**
* 添加更新的事项
* 调用commitUpdate（）实现
*/
public void addUpdateNode(Node node) throws NetworkFailureException {
if (node != null) {
// too many update items may result in an error
// set max to 10 items
if (mUpdateArray != null && mUpdateArray.length() > 10) {
commitUpdate();
}
if (mUpdateArray == null)
mUpdateArray = new JSONArray();
mUpdateArray.put(node.getUpdateAction(getActionId()));
}
}
/**
* 移动task，比如讲task移动到不同的task列表中去
* 通过getGid获取task所属列表的gid
* 通过JSONObject.put（String name，Object value）函数设置移动后的task的相关属性，从而达到移动的目的
* 最后还是通过postRequest进行更新后的发送
*/
public void moveTask(Task task, TaskList preParent, TaskList curParent)
throws NetworkFailureException {
commitUpdate();
try {
JSONObject jsPost = new JSONObject();
JSONArray actionList = new JSONArray();
JSONObject action = new JSONObject();
// action_list
action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_MOVE);
action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
action.put(GTaskStringUtils.GTASK_JSON_ID, task.getGid());
if (preParent == curParent && task.getPriorSibling() != null) {
// put prioring_sibing_id only if moving within the tasklist and
// it is not the first one
//设置优先级ID，只有当移动是发生在文件中
action.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, task.getPriorSibling());
}
action.put(GTaskStringUtils.GTASK_JSON_SOURCE_LIST, preParent.getGid());//设置移动前所属列表
action.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT, curParent.getGid());//设置当前所属列表
if (preParent != curParent) {
// put the dest_list only if moving between tasklists
action.put(GTaskStringUtils.GTASK_JSON_DEST_LIST, curParent.getGid());
}
actionList.put(action);
//最后将ACTION_LIST加入到jsPost中
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
// client_version
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
postRequest(jsPost);
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("move task: handing jsonobject failed");
}
}
/**
* 删除操作节点
* 还是利用JSON
* 删除过后使用postRequest发送删除后的结果
*/
public void deleteNode(Node node) throws NetworkFailureException {
commitUpdate();
try {
JSONObject jsPost = new JSONObject();
JSONArray actionList = new JSONArray();
// action_list
node.setDeleted(true);
actionList.put(node.getUpdateAction(getActionId()));//这里会获取到删除操作的ID，加入到actionLiast中
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
// client_version
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
postRequest(jsPost);
mUpdateArray = null;
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("delete node: handing jsonobject failed");
}
}
/**
* 获取任务列表
* 首先通过GetURI使用getResponseContent从网上获取数据
* 然后筛选出"_setup("到)}</script>的部分，并且从中获取GTASK_JSON_LISTS的内容返回
*/
public JSONArray getTaskLists() throws NetworkFailureException {
if (!mLoggedin) {
Log.e(TAG, "please login first");
throw new ActionFailureException("not logged in");
}
try {
HttpGet httpGet = new HttpGet(mGetUrl);
HttpResponse response = null;
response = mHttpClient.execute(httpGet);
// get the task list
//筛选工作，把筛选出的字符串放入jsString
String resString = getResponseContent(response.getEntity());
String jsBegin = "_setup(";
String jsEnd = ")}</script>";
int begin = resString.indexOf(jsBegin);
int end = resString.lastIndexOf(jsEnd);
String jsString = null;
if (begin != -1 && end != -1 && begin < end) {
jsString = resString.substring(begin + jsBegin.length(), end);
}
JSONObject js = new JSONObject(jsString);
//获取GTASK_JSON_LISTS
return js.getJSONObject("t").getJSONArray(GTaskStringUtils.GTASK_JSON_LISTS);
} catch (ClientProtocolException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new NetworkFailureException("gettasklists: httpget failed");
} catch (IOException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new NetworkFailureException("gettasklists: httpget failed");
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("get task lists: handing jasonobject failed");
}
}
/**通过传入的TASKList的gid，从网络上获取相应属于这个任务列表的任务 */
public JSONArray getTaskList(String listGid) throws NetworkFailureException {
commitUpdate();
try {
JSONObject jsPost = new JSONObject();
JSONArray actionList = new JSONArray();
JSONObject action = new JSONObject();
// action_list
action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_GETALL);
action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
action.put(GTaskStringUtils.GTASK_JSON_LIST_ID, listGid);//这里设置为传入的listGid
action.put(GTaskStringUtils.GTASK_JSON_GET_DELETED, false);
actionList.put(action);
jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
// client_version
jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
JSONObject jsResponse = postRequest(jsPost);
return jsResponse.getJSONArray(GTaskStringUtils.GTASK_JSON_TASKS);
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("get task list: handing jsonobject failed");
}
}
public Account getSyncAccount() {
return mAccount;
}
//重置更新的内容
public void resetUpdateArray() {
mUpdateArray = null;
}
}

824
GTaskManager.java
Unescape View File

@ -1,824 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.gtask.remote;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.util.Log;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.gtask.data.MetaData;
import net.micode.notes.gtask.data.Node;
import net.micode.notes.gtask.data.SqlNote;
import net.micode.notes.gtask.data.Task;
import net.micode.notes.gtask.data.TaskList;
import net.micode.notes.gtask.exception.ActionFailureException;
import net.micode.notes.gtask.exception.NetworkFailureException;
import net.micode.notes.tool.DataUtils;
import net.micode.notes.tool.GTaskStringUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
public class GTaskManager {
private static final String TAG = GTaskManager.class.getSimpleName();
public static final int STATE_SUCCESS = 0;
public static final int STATE_NETWORK_ERROR = 1;
public static final int STATE_INTERNAL_ERROR = 2;
public static final int STATE_SYNC_IN_PROGRESS = 3;
public static final int STATE_SYNC_CANCELLED = 4;
private static GTaskManager mInstance = null;
private Activity mActivity;
private Context mContext;
private ContentResolver mContentResolver;
private boolean mSyncing;
private boolean mCancelled;
private HashMap<String, TaskList> mGTaskListHashMap;
private HashMap<String, Node> mGTaskHashMap;
private HashMap<String, MetaData> mMetaHashMap;
private TaskList mMetaList;
private HashSet<Long> mLocalDeleteIdMap;
private HashMap<String, Long> mGidToNid;
private HashMap<Long, String> mNidToGid;
private GTaskManager() {//对象初始化函数
mSyncing = false;//正在同步，flase代表未执行
mCancelled = false;//全局标识，flase代表可以执行
mGTaskListHashMap = new HashMap<String, TaskList>();//<>代表Java的泛型，就是创建一个用类型作为参数的类
mGTaskHashMap = new HashMap<String, Node>();
mMetaHashMap = new HashMap<String, MetaData>();
mMetaList = null;
mLocalDeleteIdMap = new HashSet<Long>();
mGidToNid = new HashMap<String, Long>();
mNidToGid = new HashMap<Long, String>();//通过hashmap散列表建立映射
}
/**
* 包含关键字synchronized，语言级同步，指明该函数可能运行在多线程的环境下
* 实现功能：类初始化函数
*/
public static synchronized GTaskManager getInstance() {//可能运行在多线程环境下，使用语言级同步--synchronized
if (mInstance == null) {
mInstance = new GTaskManager();
}
return mInstance;
}
/**
* 包含关键字synchronized，语言级同步，指明该函数可能运行在多线程的环境下
*/
public synchronized void setActivityContext(Activity activity) {
// used for getting authtoken
mActivity = activity;
}
/**实现功能：实现了本地同步操作和远端同步操作
* context---获取上下文
* asyncTask---用于同步的异步操作类
*/
public int sync(Context context, GTaskASyncTask asyncTask) {//核心函数
if (mSyncing) {
Log.d(TAG, "Sync is in progress");//创建日志文件（调试信息），debug
return STATE_SYNC_IN_PROGRESS;
}
mContext = context;
mContentResolver = mContext.getContentResolver();
mSyncing = true;
mCancelled = false;
mGTaskListHashMap.clear();
mGTaskHashMap.clear();
mMetaHashMap.clear();
mLocalDeleteIdMap.clear();
mGidToNid.clear();
mNidToGid.clear();
try {
GTaskClient client = GTaskClient.getInstance();//getInstance即为创建一个实例，client---客户机
client.resetUpdateArray();//JSONArray类型，reset即置为NULL
// login google task
if (!mCancelled) {
if (!client.login(mActivity)) {
throw new NetworkFailureException("login google task failed");
}
}
// get the task list from google
asyncTask.publishProgess(mContext.getString(R.string.sync_progress_init_list));
initGTaskList();//获取Google上的JSONtasklist转为本地TaskList
// do content sync work
asyncTask.publishProgess(mContext.getString(R.string.sync_progress_syncing));
syncContent();
} catch (NetworkFailureException e) {//分为两种异常，此类异常为网络异常
Log.e(TAG, e.toString());//创建日志文件（调试信息），error
return STATE_NETWORK_ERROR;
} catch (ActionFailureException e) {//此类异常为操作异常
Log.e(TAG, e.toString());
return STATE_INTERNAL_ERROR;
} catch (Exception e) {
Log.e(TAG, e.toString());
e.printStackTrace();
return STATE_INTERNAL_ERROR;
} finally {
mGTaskListHashMap.clear();
mGTaskHashMap.clear();
mMetaHashMap.clear();
mLocalDeleteIdMap.clear();
mGidToNid.clear();
mNidToGid.clear();
mSyncing = false;
}
return mCancelled ? STATE_SYNC_CANCELLED : STATE_SUCCESS;
}
/**
* 实现功能：初始化GtaskList，获取Google上的JSONtasklist转为本地TaskList
* 获得的的数据存储在mMetaList，mGTaskListHashMap,mGTaskHashMap
*/
private void initGTaskList() throws NetworkFailureException {
if (mCancelled)
return;
GTaskClient client = GTaskClient.getInstance();//getInstance即为创建一个实例，client应指远端客户机
try {
//Json对象是Name Value对（及子元素）的无序集合，相当于一个Map对象，JsonObject类是bantouyan-json库对Json对象的抽象，提供操纵Json对象的各种方法
//其格式为{"key1":value1,"key2",value2....};key必须是字符串
//因为ajax请求不刷新页面，但配合js可以实现局部刷新，因此json常常被用来作为异步请求的返回对象使用
JSONArray jsTaskLists = client.getTaskLists();
// init meta list first
mMetaList = null;//TaskList类型
for (int i = 0; i < jsTaskLists.length(); i++) {
JSONObject object = jsTaskLists.getJSONObject(i);//JSONObject与JSONArray一个为对象，一个为数组，此处取出单个JASONObject
String gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);
String name = object.getString(GTaskStringUtils.GTASK_JSON_NAME);
if (name
.equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_META)) {
mMetaList = new TaskList();//MetaList意为元表，Tasklist类型，此处为初始化
mMetaList.setContentByRemoteJSON(object);//将JSON中部分数据复制到自己定义的对象中相对应的数据：name->mname
// load meta data
JSONArray jsMetas = client.getTaskList(gid);
for (int j = 0; j < jsMetas.length(); j++) {
object = (JSONObject) jsMetas.getJSONObject(j);
MetaData metaData = new MetaData();//继承自Node
metaData.setContentByRemoteJSON(object);
if (metaData.isWorthSaving()) {//if not worth to save，metadate将不加入mMetaList
mMetaList.addChildTask(metaData);
if (metaData.getGid() != null) {
mMetaHashMap.put(metaData.getRelatedGid(), metaData);
}
}
}
}
}
// create meta list if not existed
if (mMetaList == null) {
mMetaList = new TaskList();
mMetaList.setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX
+ GTaskStringUtils.FOLDER_META);
GTaskClient.getInstance().createTaskList(mMetaList);
}
// init task list
for (int i = 0; i < jsTaskLists.length(); i++) {
JSONObject object = jsTaskLists.getJSONObject(i);
String gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);//通过getString函数传入本地某个标志数据的名称，获取其在远端的名称
String name = object.getString(GTaskStringUtils.GTASK_JSON_NAME);
if (name.startsWith(GTaskStringUtils.MIUI_FOLDER_PREFFIX)
&& !name.equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX
+ GTaskStringUtils.FOLDER_META)) {
TaskList tasklist = new TaskList();//继承自Node
tasklist.setContentByRemoteJSON(object);
mGTaskListHashMap.put(gid, tasklist);
mGTaskHashMap.put(gid, tasklist);
// load tasks
JSONArray jsTasks = client.getTaskList(gid);
for (int j = 0; j < jsTasks.length(); j++) {
object = (JSONObject) jsTasks.getJSONObject(j);
gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);
Task task = new Task();
task.setContentByRemoteJSON(object);
if (task.isWorthSaving()) {
task.setMetaInfo(mMetaHashMap.get(gid));
tasklist.addChildTask(task);
mGTaskHashMap.put(gid, task);
}
}
}
}
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("initGTaskList: handing JSONObject failed");
}
}
/**
* 实现功能：本地内容同步操作
*/
private void syncContent() throws NetworkFailureException {//本地内容同步操作
int syncType;
Cursor c = null;//数据库指针
String gid;
Node node;//Node包含Sync_Action的不同类型
mLocalDeleteIdMap.clear();//HashSet<Long>类型
if (mCancelled) {
return;
}
// for local deleted note
try {
c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
"(type<>? AND parent_id=?)", new String[] {
String.valueOf(Notes.TYPE_SYSTEM), String.valueOf(Notes.ID_TRASH_FOLER)
}, null);
if (c != null) {
while (c.moveToNext()) {
gid = c.getString(SqlNote.GTASK_ID_COLUMN);
node = mGTaskHashMap.get(gid);
if (node != null) {
mGTaskHashMap.remove(gid);
doContentSync(Node.SYNC_ACTION_DEL_REMOTE, node, c);
}
mLocalDeleteIdMap.add(c.getLong(SqlNote.ID_COLUMN));
}
} else {
Log.w(TAG, "failed to query trash folder");
}
} finally {
if (c != null) {
c.close();
c = null;
}
}
// sync folder first
syncFolder();
// for note existing in database
try {
c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
"(type=? AND parent_id<>?)", new String[] {
String.valueOf(Notes.TYPE_NOTE), String.valueOf(Notes.ID_TRASH_FOLER)
}, NoteColumns.TYPE + " DESC");
if (c != null) {
while (c.moveToNext()) {
gid = c.getString(SqlNote.GTASK_ID_COLUMN);
node = mGTaskHashMap.get(gid);
if (node != null) {
mGTaskHashMap.remove(gid);
mGidToNid.put(gid, c.getLong(SqlNote.ID_COLUMN));//通过hashmap建立联系
mNidToGid.put(c.getLong(SqlNote.ID_COLUMN), gid);//通过hashmap建立联系
syncType = node.getSyncAction(c);
} else {
if (c.getString(SqlNote.GTASK_ID_COLUMN).trim().length() == 0) {
// local add
syncType = Node.SYNC_ACTION_ADD_REMOTE;
} else {
// remote delete
syncType = Node.SYNC_ACTION_DEL_LOCAL;
}
}
doContentSync(syncType, node, c);
}
} else {
Log.w(TAG, "failed to query existing note in database");
}
} finally {
if (c != null) {
c.close();
c = null;
}
}
// go through remaining items
Iterator<Map.Entry<String, Node>> iter = mGTaskHashMap.entrySet().iterator();//iterator迭代器
while (iter.hasNext()) {
Map.Entry<String, Node> entry = iter.next();
node = entry.getValue();
doContentSync(Node.SYNC_ACTION_ADD_LOCAL, node, null);
}
// mCancelled can be set by another thread, so we neet to check one by
// one
// clear local delete table
if (!mCancelled) {
if (!DataUtils.batchDeleteNotes(mContentResolver, mLocalDeleteIdMap)) {
throw new ActionFailureException("failed to batch-delete local deleted notes");
}
}
// refresh local sync id
if (!mCancelled) {
GTaskClient.getInstance().commitUpdate();
refreshLocalSyncId();
}
}
private void syncFolder() throws NetworkFailureException {
Cursor c = null;
String gid;
Node node;
int syncType;
if (mCancelled) {
return;
}
// for root folder
try {
c = mContentResolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI,
Notes.ID_ROOT_FOLDER), SqlNote.PROJECTION_NOTE, null, null, null);
if (c != null) {
c.moveToNext();
gid = c.getString(SqlNote.GTASK_ID_COLUMN);
node = mGTaskHashMap.get(gid);
if (node != null) {
mGTaskHashMap.remove(gid);
mGidToNid.put(gid, (long) Notes.ID_ROOT_FOLDER);
mNidToGid.put((long) Notes.ID_ROOT_FOLDER, gid);
// for system folder, only update remote name if necessary
if (!node.getName().equals(
GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT))
doContentSync(Node.SYNC_ACTION_UPDATE_REMOTE, node, c);
} else {
doContentSync(Node.SYNC_ACTION_ADD_REMOTE, node, c);
}
} else {
Log.w(TAG, "failed to query root folder");
}
} finally {
if (c != null) {
c.close();
c = null;
}
}
// for call-note folder
try {
c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE, "(_id=?)",
new String[] {
String.valueOf(Notes.ID_CALL_RECORD_FOLDER)
}, null);
if (c != null) {
if (c.moveToNext()) {
gid = c.getString(SqlNote.GTASK_ID_COLUMN);
node = mGTaskHashMap.get(gid);
if (node != null) {
mGTaskHashMap.remove(gid);
mGidToNid.put(gid, (long) Notes.ID_CALL_RECORD_FOLDER);
mNidToGid.put((long) Notes.ID_CALL_RECORD_FOLDER, gid);
// for system folder, only update remote name if
// necessary
if (!node.getName().equals(
GTaskStringUtils.MIUI_FOLDER_PREFFIX
+ GTaskStringUtils.FOLDER_CALL_NOTE))
doContentSync(Node.SYNC_ACTION_UPDATE_REMOTE, node, c);
} else {
doContentSync(Node.SYNC_ACTION_ADD_REMOTE, node, c);
}
}
} else {
Log.w(TAG, "failed to query call note folder");
}
} finally {
if (c != null) {
c.close();
c = null;
}
}
// for local existing folders
try {
c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
"(type=? AND parent_id<>?)", new String[] {
String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER)
}, NoteColumns.TYPE + " DESC");
if (c != null) {
while (c.moveToNext()) {
gid = c.getString(SqlNote.GTASK_ID_COLUMN);
node = mGTaskHashMap.get(gid);
if (node != null) {
mGTaskHashMap.remove(gid);
mGidToNid.put(gid, c.getLong(SqlNote.ID_COLUMN));
mNidToGid.put(c.getLong(SqlNote.ID_COLUMN), gid);
syncType = node.getSyncAction(c);
} else {
if (c.getString(SqlNote.GTASK_ID_COLUMN).trim().length() == 0) {
// local add
syncType = Node.SYNC_ACTION_ADD_REMOTE;
} else {
// remote delete
syncType = Node.SYNC_ACTION_DEL_LOCAL;
}
}
doContentSync(syncType, node, c);
}
} else {
Log.w(TAG, "failed to query existing folder");
}
} finally {
if (c != null) {
c.close();
c = null;
}
}
// for remote add folders
Iterator<Map.Entry<String, TaskList>> iter = mGTaskListHashMap.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry<String, TaskList> entry = iter.next();
gid = entry.getKey();
node = entry.getValue();
if (mGTaskHashMap.containsKey(gid)) {
mGTaskHashMap.remove(gid);
doContentSync(Node.SYNC_ACTION_ADD_LOCAL, node, null);
}
}
if (!mCancelled)
GTaskClient.getInstance().commitUpdate();
}
/**
* 实现功能：syncType分类，addLocalNode,addRemoteNode,deleteNode,updateLocalNode,updateRemoteNode
*/
private void doContentSync(int syncType, Node node, Cursor c) throws NetworkFailureException {
if (mCancelled) {
return;
}
MetaData meta;
switch (syncType) {
case Node.SYNC_ACTION_ADD_LOCAL:
addLocalNode(node);
break;
case Node.SYNC_ACTION_ADD_REMOTE:
addRemoteNode(node, c);
break;
case Node.SYNC_ACTION_DEL_LOCAL:
meta = mMetaHashMap.get(c.getString(SqlNote.GTASK_ID_COLUMN));
if (meta != null) {
GTaskClient.getInstance().deleteNode(meta);
}
mLocalDeleteIdMap.add(c.getLong(SqlNote.ID_COLUMN));
break;
case Node.SYNC_ACTION_DEL_REMOTE:
meta = mMetaHashMap.get(node.getGid());
if (meta != null) {
GTaskClient.getInstance().deleteNode(meta);
}
GTaskClient.getInstance().deleteNode(node);
break;
case Node.SYNC_ACTION_UPDATE_LOCAL:
updateLocalNode(node, c);
break;
case Node.SYNC_ACTION_UPDATE_REMOTE:
updateRemoteNode(node, c);
break;
case Node.SYNC_ACTION_UPDATE_CONFLICT:
// merging both modifications maybe a good idea
// right now just use local update simply
updateRemoteNode(node, c);
break;
case Node.SYNC_ACTION_NONE:
break;
case Node.SYNC_ACTION_ERROR:
default:
throw new ActionFailureException("unkown sync action type");
}
}
/**实现功能：本地增加Node */
private void addLocalNode(Node node) throws NetworkFailureException {
if (mCancelled) {
return;
}
SqlNote sqlNote;
if (node instanceof TaskList) {
if (node.getName().equals(
GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT)) {
sqlNote = new SqlNote(mContext, Notes.ID_ROOT_FOLDER);
} else if (node.getName().equals(
GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_CALL_NOTE)) {
sqlNote = new SqlNote(mContext, Notes.ID_CALL_RECORD_FOLDER);
} else {
sqlNote = new SqlNote(mContext);
sqlNote.setContent(node.getLocalJSONFromContent());
sqlNote.setParentId(Notes.ID_ROOT_FOLDER);
}
} else {
sqlNote = new SqlNote(mContext);
JSONObject js = node.getLocalJSONFromContent();
try {
if (js.has(GTaskStringUtils.META_HEAD_NOTE)) {
JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
if (note.has(NoteColumns.ID)) {
long id = note.getLong(NoteColumns.ID);
if (DataUtils.existInNoteDatabase(mContentResolver, id)) {
// the id is not available, have to create a new one
note.remove(NoteColumns.ID);
}
}
}
if (js.has(GTaskStringUtils.META_HEAD_DATA)) {
JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
for (int i = 0; i < dataArray.length(); i++) {
JSONObject data = dataArray.getJSONObject(i);
if (data.has(DataColumns.ID)) {
long dataId = data.getLong(DataColumns.ID);
if (DataUtils.existInDataDatabase(mContentResolver, dataId)) {
// the data id is not available, have to create
// a new one
data.remove(DataColumns.ID);
}
}
}
}
} catch (JSONException e) {
Log.w(TAG, e.toString());
e.printStackTrace();
}
sqlNote.setContent(js);
Long parentId = mGidToNid.get(((Task) node).getParent().getGid());
if (parentId == null) {
Log.e(TAG, "cannot find task's parent id locally");
throw new ActionFailureException("cannot add local node");
}
sqlNote.setParentId(parentId.longValue());
}
// create the local node
sqlNote.setGtaskId(node.getGid());
sqlNote.commit(false);
// update gid-nid mapping
mGidToNid.put(node.getGid(), sqlNote.getId());
mNidToGid.put(sqlNote.getId(), node.getGid());
// update meta
updateRemoteMeta(node.getGid(), sqlNote);
}
/**实现功能：更新本地Node */
private void updateLocalNode(Node node, Cursor c) throws NetworkFailureException {
if (mCancelled) {
return;
}
SqlNote sqlNote;
// update the note locally
sqlNote = new SqlNote(mContext, c);
sqlNote.setContent(node.getLocalJSONFromContent());
Long parentId = (node instanceof Task) ? mGidToNid.get(((Task) node).getParent().getGid())
: new Long(Notes.ID_ROOT_FOLDER);
if (parentId == null) {
Log.e(TAG, "cannot find task's parent id locally");
throw new ActionFailureException("cannot update local node");
}
sqlNote.setParentId(parentId.longValue());
sqlNote.commit(true);
// update meta info
updateRemoteMeta(node.getGid(), sqlNote);
}
/**实现功能：远程增加node */
private void addRemoteNode(Node node, Cursor c) throws NetworkFailureException {
if (mCancelled) {
return;
}
SqlNote sqlNote = new SqlNote(mContext, c);//从本地mContext中获取内容
Node n;
// update remotely
if (sqlNote.isNoteType()) {
Task task = new Task();
task.setContentByLocalJSON(sqlNote.getContent());
String parentGid = mNidToGid.get(sqlNote.getParentId());
if (parentGid == null) {
Log.e(TAG, "cannot find task's parent tasklist");//调试信息
throw new ActionFailureException("cannot add remote task");
}
mGTaskListHashMap.get(parentGid).addChildTask(task);//在本地生成的GTaskList中增加子结点
//登录远程服务器，创建Task
GTaskClient.getInstance().createTask(task);
n = (Node) task;
// add meta
updateRemoteMeta(task.getGid(), sqlNote);
} else {
TaskList tasklist = null;
// we need to skip folder if it has already existed
String folderName = GTaskStringUtils.MIUI_FOLDER_PREFFIX;
if (sqlNote.getId() == Notes.ID_ROOT_FOLDER)
folderName += GTaskStringUtils.FOLDER_DEFAULT;
else if (sqlNote.getId() == Notes.ID_CALL_RECORD_FOLDER)
folderName += GTaskStringUtils.FOLDER_CALL_NOTE;
else
folderName += sqlNote.getSnippet();
//iterator迭代器，通过统一的接口迭代所有的map元素
Iterator<Map.Entry<String, TaskList>> iter = mGTaskListHashMap.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry<String, TaskList> entry = iter.next();
String gid = entry.getKey();
TaskList list = entry.getValue();
if (list.getName().equals(folderName)) {
tasklist = list;
if (mGTaskHashMap.containsKey(gid)) {
mGTaskHashMap.remove(gid);
}
break;
}
}
// no match we can add now
if (tasklist == null) {
tasklist = new TaskList();
tasklist.setContentByLocalJSON(sqlNote.getContent());
GTaskClient.getInstance().createTaskList(tasklist);
mGTaskListHashMap.put(tasklist.getGid(), tasklist);
}
n = (Node) tasklist;
}
// update local note
sqlNote.setGtaskId(n.getGid());
sqlNote.commit(false);
sqlNote.resetLocalModified();
sqlNote.commit(true);
// gid-id mapping
//创建id间的映射
mGidToNid.put(n.getGid(), sqlNote.getId());
mNidToGid.put(sqlNote.getId(), n.getGid());
}
/**实现功能：更新远端的Node，包含meta更新 */
private void updateRemoteNode(Node node, Cursor c) throws NetworkFailureException {
if (mCancelled) {
return;
}
SqlNote sqlNote = new SqlNote(mContext, c);
// update remotely
node.setContentByLocalJSON(sqlNote.getContent());
GTaskClient.getInstance().addUpdateNode(node);//GTaskClient用途为从本地登录远端服务器
// update meta
updateRemoteMeta(node.getGid(), sqlNote);
// move task if necessary
if (sqlNote.isNoteType()) {
Task task = (Task) node;
TaskList preParentList = task.getParent();
//preParentList为通过node获取的父节点列表
String curParentGid = mNidToGid.get(sqlNote.getParentId());
//curParentGid为通过光标在数据库中找到sqlNote的mParentId，再通过mNidToGid有long类型转为String类型的Gid
if (curParentGid == null) {
Log.e(TAG, "cannot find task's parent tasklist");
throw new ActionFailureException("cannot update remote task");
}
TaskList curParentList = mGTaskListHashMap.get(curParentGid);
//通过HashMap找到对应的Gid的TaskList
if (preParentList != curParentList) {
preParentList.removeChildTask(task);
curParentList.addChildTask(task);
GTaskClient.getInstance().moveTask(task, preParentList, curParentList);
}
}
// clear local modified flag
sqlNote.resetLocalModified();
//commit到本地数据库
sqlNote.commit(true);
}
/**实现功能：升级远程meta，meta---元数据---计算机文件系统管理数据---管理数据的数据 */
private void updateRemoteMeta(String gid, SqlNote sqlNote) throws NetworkFailureException {
if (sqlNote != null && sqlNote.isNoteType()) {
MetaData metaData = mMetaHashMap.get(gid);
if (metaData != null) {
metaData.setMeta(gid, sqlNote.getContent());
GTaskClient.getInstance().addUpdateNode(metaData);
} else {
metaData = new MetaData();
metaData.setMeta(gid, sqlNote.getContent());
mMetaList.addChildTask(metaData);
mMetaHashMap.put(gid, metaData);
GTaskClient.getInstance().createTask(metaData);
}
}
}
/**实现功能：刷新本地，给sync的ID对应上最后更改过的对象 */
private void refreshLocalSyncId() throws NetworkFailureException {
if (mCancelled) {
return;
}
// get the latest gtask list
//获取最近的gtask list
mGTaskHashMap.clear();
mGTaskListHashMap.clear();
mMetaHashMap.clear();
initGTaskList();
Cursor c = null;
try {
c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
"(type<>? AND parent_id<>?)", new String[] {
String.valueOf(Notes.TYPE_SYSTEM), String.valueOf(Notes.ID_TRASH_FOLER)
}, NoteColumns.TYPE + " DESC");//query语句：五个参数，NoteColumns.TYPE + "DESC"-----为按类型递减顺序返回查询结果，new String[]{String.valueof(Notes.TYPE_SYSTEM),
//String.valueof(Notes.ID_TRASH_FOLER)}-----为选择参数，"(type<>?AND parent_id<>?)"------指明返回行过滤器，SqlNote.PROJECTION_NOTE-----对应返回的数据列的名字，
//Notes.CONTENT_NOTE_URI------contentProvider包含所有数据集所对应的uri
if (c != null) {
while (c.moveToNext()) {
String gid = c.getString(SqlNote.GTASK_ID_COLUMN);
Node node = mGTaskHashMap.get(gid);
if (node != null) {
mGTaskHashMap.remove(gid);
ContentValues values = new ContentValues();//在ContentValues中创建键值对，准备通过contentResolver写入数据
values.put(NoteColumns.SYNC_ID, node.getLastModified());
mContentResolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI,//进行批量更改，选择参数为NULL，应该可以用insert替换，参数分别为表名和需要更新的value对象
c.getLong(SqlNote.ID_COLUMN)), values, null, null);
} else {
Log.e(TAG, "something is missed");
throw new ActionFailureException(
"some local items don't have gid after sync");
}
}
} else {
Log.w(TAG, "failed to query local note to refresh sync id");
}
} finally {
if (c != null) {
c.close();
c = null;
}
}
}
/**实现功能：获取同步账号，mAccount.name */
public String getSyncAccount() {
return GTaskClient.getInstance().getSyncAccount().name;
}
/**实现功能：取消同步，置mCancelled 为 true */
public void cancelSync() {
mCancelled = true;
}
}

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GTaskStringUtils.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//简介：定义了很多的静态字符串，目的就是为了提供jsonObject中相应字符串的“key”。把这些静态的定义单独写到了一个类里面，这是非常好的编程规范
package net.micode.notes.tool;
//这个类就是定义了一堆static String，实际就是为jsonObject提供key，把这些定义全部写到一个类里，方便查看管理，是一个非常好的编程习惯
public class GTaskStringUtils {
public final static String GTASK_JSON_ACTION_ID = "action_id";
public final static String GTASK_JSON_ACTION_LIST = "action_list";
public final static String GTASK_JSON_ACTION_TYPE = "action_type";
public final static String GTASK_JSON_ACTION_TYPE_CREATE = "create";
public final static String GTASK_JSON_ACTION_TYPE_GETALL = "get_all";
public final static String GTASK_JSON_ACTION_TYPE_MOVE = "move";
public final static String GTASK_JSON_ACTION_TYPE_UPDATE = "update";
public final static String GTASK_JSON_CREATOR_ID = "creator_id";
public final static String GTASK_JSON_CHILD_ENTITY = "child_entity";
public final static String GTASK_JSON_CLIENT_VERSION = "client_version";
public final static String GTASK_JSON_COMPLETED = "completed";
public final static String GTASK_JSON_CURRENT_LIST_ID = "current_list_id";
public final static String GTASK_JSON_DEFAULT_LIST_ID = "default_list_id";
public final static String GTASK_JSON_DELETED = "deleted";
public final static String GTASK_JSON_DEST_LIST = "dest_list";
public final static String GTASK_JSON_DEST_PARENT = "dest_parent";
public final static String GTASK_JSON_DEST_PARENT_TYPE = "dest_parent_type";
public final static String GTASK_JSON_ENTITY_DELTA = "entity_delta";
public final static String GTASK_JSON_ENTITY_TYPE = "entity_type";
public final static String GTASK_JSON_GET_DELETED = "get_deleted";
public final static String GTASK_JSON_ID = "id";
public final static String GTASK_JSON_INDEX = "index";
public final static String GTASK_JSON_LAST_MODIFIED = "last_modified";
public final static String GTASK_JSON_LATEST_SYNC_POINT = "latest_sync_point";
public final static String GTASK_JSON_LIST_ID = "list_id";
public final static String GTASK_JSON_LISTS = "lists";
public final static String GTASK_JSON_NAME = "name";
public final static String GTASK_JSON_NEW_ID = "new_id";
public final static String GTASK_JSON_NOTES = "notes";
public final static String GTASK_JSON_PARENT_ID = "parent_id";
public final static String GTASK_JSON_PRIOR_SIBLING_ID = "prior_sibling_id";
public final static String GTASK_JSON_RESULTS = "results";
public final static String GTASK_JSON_SOURCE_LIST = "source_list";
public final static String GTASK_JSON_TASKS = "tasks";
public final static String GTASK_JSON_TYPE = "type";
public final static String GTASK_JSON_TYPE_GROUP = "GROUP";
public final static String GTASK_JSON_TYPE_TASK = "TASK";
public final static String GTASK_JSON_USER = "user";
public final static String MIUI_FOLDER_PREFFIX = "[MIUI_Notes]";
public final static String FOLDER_DEFAULT = "Default";
public final static String FOLDER_CALL_NOTE = "Call_Note";
public final static String FOLDER_META = "METADATA";
public final static String META_HEAD_GTASK_ID = "meta_gid";
public final static String META_HEAD_NOTE = "meta_note";
public final static String META_HEAD_DATA = "meta_data";
public final static String META_NOTE_NAME = "[META INFO] DON'T UPDATE AND DELETE";
}

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GTaskSyncService.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.gtask.remote;
import android.app.Activity;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.IBinder;
/*
* Service是在一段不定的时间运行在后台，不和用户交互的应用组件
* 主要方法：
* private void startSync() 启动一个同步工作
* private void cancelSync() 取消同步
* public void onCreate()
* public int onStartCommand(Intent intent, int flags, int startId) service生命周期的组成部分，相当于重启service（比如在被暂停之后），而不是创建一个新的service
* public void onLowMemory() 在没有内存的情况下如果存在service则结束掉这的service
* public IBinder onBind()
* public void sendBroadcast(String msg) 发送同步的相关通知
* public static void startSync(Activity activity)
* public static void cancelSync(Context context)
* public static boolean isSyncing() 判读是否在进行同步
* public static String getProgressString() 获取当前进度的信息
*/
public class GTaskSyncService extends Service {
public final static String ACTION_STRING_NAME = "sync_action_type";
public final static int ACTION_START_SYNC = 0;
public final static int ACTION_CANCEL_SYNC = 1;
public final static int ACTION_INVALID = 2;
public final static String GTASK_SERVICE_BROADCAST_NAME = "net.micode.notes.gtask.remote.gtask_sync_service";
public final static String GTASK_SERVICE_BROADCAST_IS_SYNCING = "isSyncing";
public final static String GTASK_SERVICE_BROADCAST_PROGRESS_MSG = "progressMsg";
private static GTaskASyncTask mSyncTask = null;
private static String mSyncProgress = "";
//开始一个同步的工作
private void startSync() {
if (mSyncTask == null) {
mSyncTask = new GTaskASyncTask(this, new GTaskASyncTask.OnCompleteListener() {
public void onComplete() {
mSyncTask = null;
sendBroadcast("");
stopSelf();
}
});
sendBroadcast("");
mSyncTask.execute();//这个函数让任务是以单线程队列方式或线程池队列方式运行
}
}
private void cancelSync() {
if (mSyncTask != null) {
mSyncTask.cancelSync();
}
}
@Override
public void onCreate() {//初始化一个service
mSyncTask = null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Bundle bundle = intent.getExtras();
if (bundle != null && bundle.containsKey(ACTION_STRING_NAME)) {
switch (bundle.getInt(ACTION_STRING_NAME, ACTION_INVALID)) {
//两种情况，开始同步或者取消同步
case ACTION_START_SYNC:
startSync();
break;
case ACTION_CANCEL_SYNC:
cancelSync();
break;
default:
break;
}
return START_STICKY;//等待新的intent来是这个service继续运行
}
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onLowMemory() {
if (mSyncTask != null) {
mSyncTask.cancelSync();
}
}
public IBinder onBind(Intent intent) {
return null;
}
public void sendBroadcast(String msg) {
mSyncProgress = msg;
Intent intent = new Intent(GTASK_SERVICE_BROADCAST_NAME);//创建一个新的Intent
intent.putExtra(GTASK_SERVICE_BROADCAST_IS_SYNCING, mSyncTask != null);//附加INTENT中的相应参数的值
intent.putExtra(GTASK_SERVICE_BROADCAST_PROGRESS_MSG, msg);
sendBroadcast(intent); //发送这个通知
}
public static void startSync(Activity activity) {//执行一个service，service的内容里的同步动作就是开始同步
GTaskManager.getInstance().setActivityContext(activity);
Intent intent = new Intent(activity, GTaskSyncService.class);
intent.putExtra(GTaskSyncService.ACTION_STRING_NAME, GTaskSyncService.ACTION_START_SYNC);
activity.startService(intent);
}
public static void cancelSync(Context context) {//执行一个service，service的内容里的同步动作就是取消同步
Intent intent = new Intent(context, GTaskSyncService.class);
intent.putExtra(GTaskSyncService.ACTION_STRING_NAME, GTaskSyncService.ACTION_CANCEL_SYNC);
context.startService(intent);
}
public static boolean isSyncing() {
return mSyncTask != null;
}
public static String getProgressString() {
return mSyncProgress;
}
}

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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.gtask.data;
import android.database.Cursor;
import android.util.Log;
import net.micode.notes.tool.GTaskStringUtils;
import org.json.JSONException;
import org.json.JSONObject;
public class MetaData extends Task {
/**实现功能：得到类的简写名称存入字符串TAG中（调用getSimpleName()函数） */
private final static String TAG = MetaData.class.getSimpleName();
private String mRelatedGid = null;
/**实现功能：设置数据，即生成元数据库（调用JSONObject库函数put（），Task类中的setNotes（）和setName（）函数） */
public void setMeta(String gid, JSONObject metaInfo) {
//对函数块进行注释
try {
metaInfo.put(GTaskStringUtils.META_HEAD_GTASK_ID, gid);
/**将这对键值放入metaInfo这个jsonobject对象中 */
} catch (JSONException e) {
Log.e(TAG, "failed to put related gid");
/**输出错误信息 */
}
setNotes(metaInfo.toString());
setName(GTaskStringUtils.META_NOTE_NAME);
}
/**实现功能：获取相关联的Gid */
public String getRelatedGid() {
return mRelatedGid;
}
/**实现功能：判断当前数据是否为空，若为空则返回真即值得保存 */
@Override
public boolean isWorthSaving() {
return getNotes() != null;
}
/**实现功能：使用远程json数据对象设置元数据内容（调用父类Task中的setContentByRemoteJSON（）函数） */
@Override
public void setContentByRemoteJSON(JSONObject js) {
super.setContentByRemoteJSON(js);
if (getNotes() != null) {
try {
JSONObject metaInfo = new JSONObject(getNotes().trim());
mRelatedGid = metaInfo.getString(GTaskStringUtils.META_HEAD_GTASK_ID);
} catch (JSONException e) {
Log.w(TAG, "failed to get related gid");
/**输出警告信息 */
mRelatedGid = null;
}
}
}
/**实现功能：使用本地json数据对象设置元数据内容，一般不会用到，若用到，则抛出异常 */
@Override
public void setContentByLocalJSON(JSONObject js) {
// this function should not be called
throw new IllegalAccessError("MetaData:setContentByLocalJSON should not be called");
/**传递非法参数异常 */
}
/**实现功能：从元数据内容中获取本地json对象，一般不会用到，若用到，则抛出异常 */
@Override
public JSONObject getLocalJSONFromContent() {
throw new IllegalAccessError("MetaData:getLocalJSONFromContent should not be called");
/**传递非法参数异常 */
}
/**实现功能：获取同步动作状态，一般不会用到，若用到，则抛出异常 */
@Override
public int getSyncAction(Cursor c) {
throw new IllegalAccessError("MetaData:getSyncAction should not be called");
/**传递非法参数异常 */
}
}

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NetworkFailureException.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.gtask.exception;
public class NetworkFailureException extends Exception {
private static final long serialVersionUID = 2107610287180234136L;
public NetworkFailureException() {
super();
}
public NetworkFailureException(String paramString) {
super(paramString);
}
public NetworkFailureException(String paramString, Throwable paramThrowable) {
super(paramString, paramThrowable);
}
}

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Node.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.gtask.data;
import android.database.Cursor;
import org.json.JSONObject;
/**同步操作的基础数据类型，定义了相关指示同步操作的常量 */
public abstract class Node {
//定义了各种用于表征同步状态的常量
public static final int SYNC_ACTION_NONE = 0;//本地和云端都无可更新内容（即本地和云端内容一致）
public static final int SYNC_ACTION_ADD_REMOTE = 1;//需要在远程云端增加内容
public static final int SYNC_ACTION_ADD_LOCAL = 2;//需要在本地增加内容
public static final int SYNC_ACTION_DEL_REMOTE = 3;//需要在远程云端删除云端
public static final int SYNC_ACTION_DEL_LOCAL = 4;//需要在本地删除内容
public static final int SYNC_ACTION_UPDATE_REMOTE = 5;//需要将本地内容更新到远程云端
public static final int SYNC_ACTION_UPDATE_LOCAL = 6;//需要将远程云端内容更新到本地
public static final int SYNC_ACTION_UPDATE_CONFLICT = 7;//同步出现冲突
public static final int SYNC_ACTION_ERROR = 8;//同步出现错误
private String mGid;
private String mName;
private long mLastModified;//记录最后一次修改时间
private boolean mDeleted;//表征是否被删除
public Node() {
mGid = null;
mName = "";
mLastModified = 0;
mDeleted = false;
}
public abstract JSONObject getCreateAction(int actionId);
public abstract JSONObject getUpdateAction(int actionId);
public abstract void setContentByRemoteJSON(JSONObject js);
public abstract void setContentByLocalJSON(JSONObject js);
public abstract JSONObject getLocalJSONFromContent();
public abstract int getSyncAction(Cursor c);
public void setGid(String gid) {
this.mGid = gid;
}
public void setName(String name) {
this.mName = name;
}
public void setLastModified(long lastModified) {
this.mLastModified = lastModified;
}
public void setDeleted(boolean deleted) {
this.mDeleted = deleted;
}
public String getGid() {
return this.mGid;
}
public String getName() {
return this.mName;
}
public long getLastModified() {
return this.mLastModified;
}
public boolean getDeleted() {
return this.mDeleted;
}
}

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Note.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.model;
import android.content.ContentProviderOperation;//批量的更新、插入、删除数据
import android.content.ContentProviderResult;//操作后的结果
import android.content.ContentUris;//用于添加和获取uri后面的id
import android.content.ContentValues;//一种用于存储基本数据类型数据的存储机制
import android.content.Context;//需要用该类来弄清楚调用者的实例
import android.content.OperationApplicationException;//操作应用程序容错
import android.net.Uri;//表示待操作的数据
import android.os.RemoteException;//远程容错
import android.util.Log;//输出日志，比如说出错、警告等
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.CallNote;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.data.Notes.TextNote;
import java.util.ArrayList;
public class Note {
private ContentValues mNoteDiffValues;
private NoteData mNoteData;
private static final String TAG = "Note";
/**
* Create a new note id for adding a new note to databases
*/
public static synchronized long getNewNoteId(Context context, long folderId) {
// Create a new note in the database
ContentValues values = new ContentValues();
long createdTime = System.currentTimeMillis();
values.put(NoteColumns.CREATED_DATE, createdTime);
values.put(NoteColumns.MODIFIED_DATE, createdTime);
values.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
values.put(NoteColumns.LOCAL_MODIFIED, 1);
values.put(NoteColumns.PARENT_ID, folderId);//将数据写入数据库表格
Uri uri = context.getContentResolver().insert(Notes.CONTENT_NOTE_URI, values);
//ContentResolver()主要是实现外部应用对ContentProvider中的数据
//进行添加、删除、修改和查询操作
long noteId = 0;
try {
noteId = Long.valueOf(uri.getPathSegments().get(1));
} catch (NumberFormatException e) {
Log.e(TAG, "Get note id error :" + e.toString());
noteId = 0;
}//try-catch异常处理
if (noteId == -1) {
throw new IllegalStateException("Wrong note id:" + noteId);
}
return noteId;
}
public Note() {
mNoteDiffValues = new ContentValues();
mNoteData = new NoteData();
}//定义两个变量用来存储便签的数据，一个是存储便签属性，一个是存储便签内容
public void setNoteValue(String key, String value) {
mNoteDiffValues.put(key, value);
mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
}//设置数据库表格的标签属性数据
public void setTextData(String key, String value) {
mNoteData.setTextData(key, value);
}//设置数据库表格的标签文本内容的数据
public void setTextDataId(long id) {
mNoteData.setTextDataId(id);
}//设置文本数据的id
public long getTextDataId() {
return mNoteData.mTextDataId;
}//得到文本数据的id
public void setCallDataId(long id) {
mNoteData.setCallDataId(id);
}//设置电话号码数据的id
public void setCallData(String key, String value) {
mNoteData.setCallData(key, value);
}//得到电话号码数据的id
public boolean isLocalModified() {
return mNoteDiffValues.size() > 0 || mNoteData.isLocalModified();
}//判断是否是本地修改
public boolean syncNote(Context context, long noteId) {
if (noteId <= 0) {
throw new IllegalArgumentException("Wrong note id:" + noteId);
}
if (!isLocalModified()) {
return true;
}
/**
* In theory, once data changed, the note should be updated on {@link NoteColumns#LOCAL_MODIFIED} and
* {@link NoteColumns#MODIFIED_DATE}. For data safety, though update note fails, we also update the
* note data info
*/
if (context.getContentResolver().update(
ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), mNoteDiffValues, null,
null) == 0) {
Log.e(TAG, "Update note error, should not happen");
// Do not return, fall through
}
mNoteDiffValues.clear();
if (mNoteData.isLocalModified()
&& (mNoteData.pushIntoContentResolver(context, noteId) == null)) {
return false;
}
return true;
}//判断数据是否同步
private class NoteData {//定义一个基本的便签内容的数据类，主要包含文本数据和电话号码数据
private long mTextDataId;
private ContentValues mTextDataValues;//文本数据
private long mCallDataId;
private ContentValues mCallDataValues;//电话号码数据
private static final String TAG = "NoteData";
public NoteData() {
mTextDataValues = new ContentValues();
mCallDataValues = new ContentValues();
mTextDataId = 0;
mCallDataId = 0;
}
//下面是上述几个函数的具体实现
boolean isLocalModified() {
return mTextDataValues.size() > 0 || mCallDataValues.size() > 0;
}
void setTextDataId(long id) {
if(id <= 0) {
throw new IllegalArgumentException("Text data id should larger than 0");
}
mTextDataId = id;
}
void setCallDataId(long id) {
if (id <= 0) {
throw new IllegalArgumentException("Call data id should larger than 0");
}
mCallDataId = id;
}
void setCallData(String key, String value) {
mCallDataValues.put(key, value);
mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
}
void setTextData(String key, String value) {
mTextDataValues.put(key, value);
mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
}
//下面函数的作用是将新的数据通过uri的操作存储到数据库
Uri pushIntoContentResolver(Context context, long noteId) {
/**
* Check for safety
*/
if (noteId <= 0) {
throw new IllegalArgumentException("Wrong note id:" + noteId);
}//判断数据是否合法
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
ContentProviderOperation.Builder builder = null;//数据库的操作列表
if(mTextDataValues.size() > 0) {
mTextDataValues.put(DataColumns.NOTE_ID, noteId);
if (mTextDataId == 0) {
mTextDataValues.put(DataColumns.MIME_TYPE, TextNote.CONTENT_ITEM_TYPE);
Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
mTextDataValues);
try {
setTextDataId(Long.valueOf(uri.getPathSegments().get(1)));
} catch (NumberFormatException e) {
Log.e(TAG, "Insert new text data fail with noteId" + noteId);
mTextDataValues.clear();
return null;
}
} else {
builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
Notes.CONTENT_DATA_URI, mTextDataId));
builder.withValues(mTextDataValues);
operationList.add(builder.build());
}
mTextDataValues.clear();
}//把文本数据存入DataColumns
if(mCallDataValues.size() > 0) {
mCallDataValues.put(DataColumns.NOTE_ID, noteId);
if (mCallDataId == 0) {
mCallDataValues.put(DataColumns.MIME_TYPE, CallNote.CONTENT_ITEM_TYPE);
Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
mCallDataValues);
try {
setCallDataId(Long.valueOf(uri.getPathSegments().get(1)));
} catch (NumberFormatException e) {
Log.e(TAG, "Insert new call data fail with noteId" + noteId);
mCallDataValues.clear();
return null;
}
} else {
builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
Notes.CONTENT_DATA_URI, mCallDataId));
builder.withValues(mCallDataValues);
operationList.add(builder.build());
}
mCallDataValues.clear();
}//吧电话号码数据存入DataColumns
if (operationList.size() > 0) {
try {
ContentProviderResult[] results = context.getContentResolver().applyBatch(
Notes.AUTHORITY, operationList);
return (results == null || results.length == 0 || results[0] == null) ? null
: ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId);
} catch (RemoteException e) {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
return null;
} catch (OperationApplicationException e) {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
return null;
}
}//存储过程中的异常处理
return null;
}
}
}

1046
NoteEditActivity.java
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NoteEditText.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import android.content.Context;
import android.graphics.Rect;
import android.text.Layout;
import android.text.Selection;
import android.text.Spanned;
import android.text.TextUtils;
import android.text.style.URLSpan;
import android.util.AttributeSet;
import android.util.Log;
import android.view.ContextMenu;
import android.view.KeyEvent;
import android.view.MenuItem;
import android.view.MenuItem.OnMenuItemClickListener;
import android.view.MotionEvent;
import android.widget.EditText;
import net.micode.notes.R;
import java.util.HashMap;
import java.util.Map;
//继承EditText，设置便签设置文本框
public class NoteEditText extends EditText {
private static final String TAG = "NoteEditText";
private int mIndex;
private int mSelectionStartBeforeDelete;
private static final String SCHEME_TEL = "tel:" ;
private static final String SCHEME_HTTP = "http:" ;
private static final String SCHEME_EMAIL = "mailto:" ;
//建立一个字符和整数的hash表，用于链接电话、网站和邮箱
private static final Map<String, Integer> sSchemaActionResMap = new HashMap<String, Integer>();
static {
sSchemaActionResMap.put(SCHEME_TEL, R.string.note_link_tel);
sSchemaActionResMap.put(SCHEME_HTTP, R.string.note_link_web);
sSchemaActionResMap.put(SCHEME_EMAIL, R.string.note_link_email);
}
/**
* Call by the {@link NoteEditActivity} to delete or add edit text
*/
//在NoteEditActivity中删除或添加文本的操作，可以看作是一个文本是否被变的标记
public interface OnTextViewChangeListener {
/**
* Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens
* and the text is null
*/
//处理删除案件时的操作
void onEditTextDelete(int index, String text);
/**
* Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER}
* happen
*/
//处理进入软件时的操作
void onEditTextEnter(int index, String text);
/**
* Hide or show item option when text change
*/
void onTextChange(int index, boolean hasText);
}
private OnTextViewChangeListener mOnTextViewChangeListener;
//根据context设置文本
public NoteEditText(Context context) {
super(context, null);//用super引用父类变量
mIndex = 0;
}
//设置当前光标
public void setIndex(int index) {
mIndex = index;
}
//初始化文本修改标记
public void setOnTextViewChangeListener(OnTextViewChangeListener listener) {
mOnTextViewChangeListener = listener;
}
//AttributeSet自定义空控件属性，用于维护便签动态变化的属性
//初始化便签
public NoteEditText(Context context, AttributeSet attrs) {
super(context, attrs, android.R.attr.editTextStyle);
}
//根据defStyle自动初始化
public NoteEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
}
@Override
//view里的函数，处理手机屏幕的所有事件
/**参数event为手机屏幕触摸事件封装类的对象，其中封装了该事件的所有信息，
* 例如触摸的位置、触摸的类型以及触摸的时间等。该对象会在用户触摸手机屏幕时被创建
*/
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
//重写了需要处理屏幕被按下的事件
case MotionEvent.ACTION_DOWN:
//更新当前坐标值
int x = (int) event.getX();
int y = (int) event.getY();
x -= getTotalPaddingLeft();
y -= getTotalPaddingTop();
x += getScrollX();
y += getScrollY();
//用布局控件layout根据x、y的新值设置新的位置
Layout layout = getLayout();
int line = layout.getLineForVertical(y);
int off = layout.getOffsetForHorizontal(line, x);
//更新光标新的位置
Selection.setSelection(getText(), off);
break;
}
return super.onTouchEvent(event);
}
@Override
/**函数功能：处理用户按下一个键盘按键时会触发的事件 */
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
//根据按键的unicode编码值来处理
case KeyEvent.KEYCODE_ENTER:
//“进入”按键
if (mOnTextViewChangeListener != null) {
return false;
}
break;
case KeyEvent.KEYCODE_DEL:
//删除按键
mSelectionStartBeforeDelete = getSelectionStart();
break;
default:
break;
}
//继续执行父类的其他点击事件
return super.onKeyDown(keyCode, event);
}
@Override
/**函数功能：处理用户松开一个键盘按键时会触发的事件 */
public boolean onKeyUp(int keyCode, KeyEvent event) {
switch(keyCode) {
//根据按键的unicode编码值来处理，有删除和进入两种操作
case KeyEvent.KEYCODE_DEL:
if (mOnTextViewChangeListener != null) {
//若是被修改过
if (0 == mSelectionStartBeforeDelete && mIndex != 0) {
//若是之前有被修改并且文档不为空
mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString());
//利用上文OnTextViewChangeListener对KEYCODE_DEL按键情况的删除函数进行删除
return true;
}
} else {
Log.d(TAG, "OnTextViewChangeListener was not seted");
//其他情况报错，文档的改动监听器并没有建立
}
break;
case KeyEvent.KEYCODE_ENTER:
//同上也是分为监听器是否建立两种情况
if (mOnTextViewChangeListener != null) {
int selectionStart = getSelectionStart();
//获取当前位置
String text = getText().subSequence(selectionStart, length()).toString();
//获取当前文本
setText(getText().subSequence(0, selectionStart));
//根据获取的文本设置当前文本
mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text);
//条件满足情况下，添加新文本
} else {
Log.d(TAG, "OnTextViewChangeListener was not seted");
//其他情况报错，文档的改动监听器并没有建立
}
break;
default:
break;
}
//继续执行父类的其他按键弹起的事件
return super.onKeyUp(keyCode, event);
}
@Override
/**
* 函数功能：当焦点发生变化时，会自动调用该方法来处理焦点改变的事件
* 参数：focused表示触发该事件的view是否获得了焦点，当该控件获得焦点时，focused等于true，否则等于false
* direction表示焦点移动的方向，用数值表示
* rect表示在触发事件的view的坐标系中，前一个获得焦点的矩形区域，即表示焦点是从哪里来的。如果不可用则为null
*/
protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
if (mOnTextViewChangeListener != null) {
//若监听器已经建立
if (!focused && TextUtils.isEmpty(getText())) {
//获得到焦点并且不为空
mOnTextViewChangeListener.onTextChange(mIndex, false);
//mOnTextViewChangeListener子函数，置true显示事件选项
} else {
mOnTextViewChangeListener.onTextChange(mIndex, true);
}
}
//继续执行父类的其他焦点变化的事件
super.onFocusChanged(focused, direction, previouslyFocusedRect);
}
@Override
/**函数功能：生成上下文菜单 */
protected void onCreateContextMenu(ContextMenu menu) {
if (getText() instanceof Spanned) {
//有文本存在
int selStart = getSelectionStart();
int selEnd = getSelectionEnd();
//获取文本开始和结尾位置
int min = Math.min(selStart, selEnd);
int max = Math.max(selStart, selEnd);
//获取开始到结尾的最大值和最小值
final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class);
//设置url的信息的范围值
if (urls.length == 1) {
int defaultResId = 0;
for(String schema: sSchemaActionResMap.keySet()) {
//获取计划表中所有的key值
if(urls[0].getURL().indexOf(schema) >= 0) {
//若url可以添加则在添加后将defaultResId置为key所映射的值
defaultResId = sSchemaActionResMap.get(schema);
break;
}
}
if (defaultResId == 0) {
//defaultResId == 0则说明url并没有添加任何东西，所以置为连接其他SchemaActionResMap的值
defaultResId = R.string.note_link_other;
}
//建立菜单
menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener(
new OnMenuItemClickListener() {
//新建按键监听器
public boolean onMenuItemClick(MenuItem item) {
// goto a new intent
urls[0].onClick(NoteEditText.this);
//根据相应的文本设置菜单的按键
return true;
}
});
}
}
//继续执行父类的其他菜单创建的事件
super.onCreateContextMenu(menu);
}
}

227
NoteItemData.java
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@ -1,227 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import android.content.Context;
import android.database.Cursor;
import android.text.TextUtils;
import net.micode.notes.data.Contact;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.tool.DataUtils;
public class NoteItemData {
static final String [] PROJECTION = new String [] {
NoteColumns.ID,
NoteColumns.ALERTED_DATE,
NoteColumns.BG_COLOR_ID,
NoteColumns.CREATED_DATE,
NoteColumns.HAS_ATTACHMENT,
NoteColumns.MODIFIED_DATE,
NoteColumns.NOTES_COUNT,
NoteColumns.PARENT_ID,
NoteColumns.SNIPPET,
NoteColumns.TYPE,
NoteColumns.WIDGET_ID,
NoteColumns.WIDGET_TYPE,
};
//常量标记和数据就不一一标记了，意义翻译基本就知道
private static final int ID_COLUMN = 0;
private static final int ALERTED_DATE_COLUMN = 1;
private static final int BG_COLOR_ID_COLUMN = 2;
private static final int CREATED_DATE_COLUMN = 3;
private static final int HAS_ATTACHMENT_COLUMN = 4;
private static final int MODIFIED_DATE_COLUMN = 5;
private static final int NOTES_COUNT_COLUMN = 6;
private static final int PARENT_ID_COLUMN = 7;
private static final int SNIPPET_COLUMN = 8;
private static final int TYPE_COLUMN = 9;
private static final int WIDGET_ID_COLUMN = 10;
private static final int WIDGET_TYPE_COLUMN = 11;
private long mId;
private long mAlertDate;
private int mBgColorId;
private long mCreatedDate;
private boolean mHasAttachment;
private long mModifiedDate;
private int mNotesCount;
private long mParentId;
private String mSnippet;
private int mType;
private int mWidgetId;
private int mWidgetType;
private String mName;
private String mPhoneNumber;
private boolean mIsLastItem;
private boolean mIsFirstItem;
private boolean mIsOnlyOneItem;
private boolean mIsOneNoteFollowingFolder;
private boolean mIsMultiNotesFollowingFolder;
//初始化NoteItemData，主要利用光标cursor获取的东西
public NoteItemData(Context context, Cursor cursor) {
//getxxx为转换格式
mId = cursor.getLong(ID_COLUMN);
mAlertDate = cursor.getLong(ALERTED_DATE_COLUMN);
mBgColorId = cursor.getInt(BG_COLOR_ID_COLUMN);
mCreatedDate = cursor.getLong(CREATED_DATE_COLUMN);
mHasAttachment = (cursor.getInt(HAS_ATTACHMENT_COLUMN) > 0) ? true : false;
mModifiedDate = cursor.getLong(MODIFIED_DATE_COLUMN);
mNotesCount = cursor.getInt(NOTES_COUNT_COLUMN);
mParentId = cursor.getLong(PARENT_ID_COLUMN);
mSnippet = cursor.getString(SNIPPET_COLUMN);
mSnippet = mSnippet.replace(NoteEditActivity.TAG_CHECKED, "").replace(
NoteEditActivity.TAG_UNCHECKED, "");
mType = cursor.getInt(TYPE_COLUMN);
mWidgetId = cursor.getInt(WIDGET_ID_COLUMN);
mWidgetType = cursor.getInt(WIDGET_TYPE_COLUMN);
//初始化电话号码的信息
mPhoneNumber = "";
if (mParentId == Notes.ID_CALL_RECORD_FOLDER) {
mPhoneNumber = DataUtils.getCallNumberByNoteId(context.getContentResolver(), mId);
if (!TextUtils.isEmpty(mPhoneNumber)) {//mPhoneNumber里有符合字符串，则用contact功能连接
mName = Contact.getContact(context, mPhoneNumber);
if (mName == null) {
mName = mPhoneNumber;
}
}
}
if (mName == null) {
mName = "";
}
checkPostion(cursor);
}
//根据鼠标的位置设置标记和位置
private void checkPostion(Cursor cursor) {
//初始化几个标记
mIsLastItem = cursor.isLast() ? true : false;
mIsFirstItem = cursor.isFirst() ? true : false;
mIsOnlyOneItem = (cursor.getCount() == 1);
//初始化“多重子文件”、“单一子文件”两个标记
mIsMultiNotesFollowingFolder = false;
mIsOneNoteFollowingFolder = false;
//主要是设置上述两个标记
if (mType == Notes.TYPE_NOTE && !mIsFirstItem) {//若是note格式并且不是第一个元素
int position = cursor.getPosition();
if (cursor.moveToPrevious()) {//获取光标位置后看上一行
if (cursor.getInt(TYPE_COLUMN) == Notes.TYPE_FOLDER
|| cursor.getInt(TYPE_COLUMN) == Notes.TYPE_SYSTEM) {//若光标满足系统或note格式
if (cursor.getCount() > (position + 1)) {
mIsMultiNotesFollowingFolder = true;//若是数据行数大于当前位置+1则设置成功
} else {
mIsOneNoteFollowingFolder = true;//否则单一文件夹标记为true
}
}
if (!cursor.moveToNext()) {//若不能再往下走则报错
throw new IllegalStateException("cursor move to previous but can't move back");
}
}
}
}
//以下均为获取标记
public boolean isOneFollowingFolder() {
return mIsOneNoteFollowingFolder;
}
public boolean isMultiFollowingFolder() {
return mIsMultiNotesFollowingFolder;
}
public boolean isLast() {
return mIsLastItem;
}
public String getCallName() {
return mName;
}
public boolean isFirst() {
return mIsFirstItem;
}
public boolean isSingle() {
return mIsOnlyOneItem;
}
public long getId() {
return mId;
}
public long getAlertDate() {
return mAlertDate;
}
public long getCreatedDate() {
return mCreatedDate;
}
public boolean hasAttachment() {
return mHasAttachment;
}
public long getModifiedDate() {
return mModifiedDate;
}
public int getBgColorId() {
return mBgColorId;
}
public long getParentId() {
return mParentId;
}
public int getNotesCount() {
return mNotesCount;
}
public long getFolderId () {
return mParentId;
}
public int getType() {
return mType;
}
public int getWidgetType() {
return mWidgetType;
}
public int getWidgetId() {
return mWidgetId;
}
public String getSnippet() {
return mSnippet;
}
public boolean hasAlert() {
return (mAlertDate > 0);
}
//若数据父id为保存至文件夹模式的id且满足电话号码单元不为空，则isCallRecord为true
public boolean isCallRecord() {
return (mParentId == Notes.ID_CALL_RECORD_FOLDER && !TextUtils.isEmpty(mPhoneNumber));
}
public static int getNoteType(Cursor cursor) {
return cursor.getInt(TYPE_COLUMN);
}
}

133
NoteWidgetProvider.java
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@ -1,133 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.widget;
import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.util.Log;
import android.widget.RemoteViews;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.tool.ResourceParser;
import net.micode.notes.ui.NoteEditActivity;
import net.micode.notes.ui.NotesListActivity;
public abstract class NoteWidgetProvider extends AppWidgetProvider {
// 定义常量数组，用于查询数据库中的列
public static final String [] PROJECTION = new String [] {
NoteColumns.ID,
NoteColumns.BG_COLOR_ID,
NoteColumns.SNIPPET
};
// 定义常量，表示列索引
public static final int COLUMN_ID = 0;
public static final int COLUMN_BG_COLOR_ID = 1;
public static final int COLUMN_SNIPPET = 2;
// 定义日志标签
private static final String TAG = "NoteWidgetProvider";
// 当小部件被删除时调用的方法
@Override
public void onDeleted(Context context, int[] appWidgetIds) {
ContentValues values = new ContentValues();
values.put(NoteColumns.WIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
for (int i = 0; i < appWidgetIds.length; i++) {
context.getContentResolver().update(Notes.CONTENT_NOTE_URI,
values,
NoteColumns.WIDGET_ID + "=?",
new String[] { String.valueOf(appWidgetIds[i])});
}
}
// 获取小部件信息的方法
private Cursor getNoteWidgetInfo(Context context, int widgetId) {
return context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
PROJECTION,
NoteColumns.WIDGET_ID + "=? AND " + NoteColumns.PARENT_ID + "<>?",
new String[] { String.valueOf(widgetId), String.valueOf(Notes.ID_TRASH_FOLER) },
null);
}
// 更新小部件的方法
protected void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
update(context, appWidgetManager, appWidgetIds, false);
}
// 私有的更新方法，支持隐私模式
private void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds,
boolean privacyMode) {
for (int i = 0; i < appWidgetIds.length; i++) {
if (appWidgetIds[i] != AppWidgetManager.INVALID_APPWIDGET_ID) {
int bgId = ResourceParser.getDefaultBgId(context);
String snippet = "";
Intent intent = new Intent(context, NoteEditActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
intent.putExtra(Notes.INTENT_EXTRA_WIDGET_ID, appWidgetIds[i]);
intent.putExtra(Notes.INTENT_EXTRA_WIDGET_TYPE, getWidgetType());
Cursor c = getNoteWidgetInfo(context, appWidgetIds[i]);
if (c != null && c.moveToFirst()) {
if (c.getCount() > 1) {
Log.e(TAG, "Multiple message with same widget id:" + appWidgetIds[i]);
c.close();
return;
}
snippet = c.getString(COLUMN_SNIPPET);
bgId = c.getInt(COLUMN_BG_COLOR_ID);
intent.putExtra(Intent.EXTRA_UID, c.getLong(COLUMN_ID));
intent.setAction(Intent.ACTION_VIEW);
} else {
snippet = context.getResources().getString(R.string.widget_havenot_content);
intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
}
if (c != null) {
c.close();
}
RemoteViews rv = new RemoteViews(context.getPackageName(), getLayoutId());
rv.setImageViewResource(R.id.widget_bg_image, getBgResourceId(bgId));
intent.putExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, bgId);
/**
* Generate the pending intent to start host for the widget
*/
PendingIntent pendingIntent = null;
if (privacyMode) {
rv.setTextViewText(R.id.widget_text,
context.getString(R.string.widget_under_visit_mode));
pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], new Intent(
context, NotesListActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
} else {
rv.setTextViewText(R.id.widget_text, snippet);
pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], intent,
PendingIntent.FLAG_UPDATE_CURRENT);
}
rv.setOnClickPendingIntent(R.id.widget_text, pendingIntent);
appWidgetManager.updateAppWidget(appWidgetIds[i], rv);
}
}
}
// 抽象方法，获取背景资源ID
protected abstract int getBgResourceId(int bgId);
// 抽象方法，获取布局资源ID
protected abstract int getLayoutId();
// 抽象方法，获取小部件类型
protected abstract int getWidgetType();
}

49
NoteWidgetProvider_2x.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.widget;
import android.appwidget.AppWidgetManager;
import android.content.Context;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.tool.ResourceParser;
// 继承自NoteWidgetProvider的子类，用于处理2x大小的便笺部件
public class NoteWidgetProvider_2x extends NoteWidgetProvider {
// 当部件更新时调用此方法
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
// 调用父类的update方法进行更新
super.update(context, appWidgetManager, appWidgetIds);
}
// 获取布局资源ID的方法，返回2x大小的便笺部件布局资源ID
@Override
protected int getLayoutId() {
return R.layout.widget_2x;
}
// 获取背景资源ID的方法，根据传入的背景ID返回对应的2x大小的背景资源ID
@Override
protected int getBgResourceId(int bgId) {
return ResourceParser.WidgetBgResources.getWidget2xBgResource(bgId);
}
// 获取部件类型的方法，返回2x大小的便笺部件类型
@Override
protected int getWidgetType() {
return Notes.TYPE_WIDGET_2X;
}
}

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NoteWidgetProvider_4x.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.widget;
import android.appwidget.AppWidgetManager;
import android.content.Context;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.tool.ResourceParser;
// 定义一个名为NoteWidgetProvider_4x的类，继承自NoteWidgetProvider类
public class NoteWidgetProvider_4x extends NoteWidgetProvider {
// 重写onUpdate方法，用于更新小部件
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
// 调用父类的update方法进行更新
super.update(context, appWidgetManager, appWidgetIds);
}
// 获取布局资源ID的方法，返回4x大小的便笺部件布局资源ID
protected int getLayoutId() {
return R.layout.widget_4x;
}
// 获取背景资源ID的方法，根据传入的背景ID返回对应的4x大小的背景资源ID
@Override
protected int getBgResourceId(int bgId) {
return ResourceParser.WidgetBgResources.getWidget4xBgResource(bgId);
}
// 获取部件类型的方法，返回4x大小的便笺部件类型
@Override
protected int getWidgetType() {
return Notes.TYPE_WIDGET_4X;
}
}

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Notes.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.data;
import android.net.Uri;
// Notes 类中定义了很多常量，这些常量大多是int型和string型
public class Notes {
public static final String AUTHORITY = "micode_notes";
public static final String TAG = "Notes";
//以下三个常量对NoteColumns.TYPE的值进行设置时会用到
public static final int TYPE_NOTE = 0;
public static final int TYPE_FOLDER = 1;
public static final int TYPE_SYSTEM = 2;
/**
* Following IDs are system folders' identifiers
* {@link Notes#ID_ROOT_FOLDER } is default folder
* {@link Notes#ID_TEMPARAY_FOLDER } is for notes belonging no folder
* {@link Notes#ID_CALL_RECORD_FOLDER} is to store call records
*/
//以下ID是系统文件夹的标识符
public static final int ID_ROOT_FOLDER = 0;
public static final int ID_TEMPARAY_FOLDER = -1;
public static final int ID_CALL_RECORD_FOLDER = -2;
public static final int ID_TRASH_FOLER = -3;
public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date";
public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id";
public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id";
public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type";
public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id";
public static final String INTENT_EXTRA_CALL_DATE = "net.micode.notes.call_date";
public static final int TYPE_WIDGET_INVALIDE = -1;
public static final int TYPE_WIDGET_2X = 0;
public static final int TYPE_WIDGET_4X = 1;
public static class DataConstants {
public static final String NOTE = TextNote.CONTENT_ITEM_TYPE;
public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE;
}
/**
* Uri to query all notes and folders
*/
//用于查询所有便签和文件夹uri
public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note");//定义查询便签和文件夹的指针。
/**
* Uri to query data
*/
//用于查询数据uri
public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data");//定义查找数据的指针。
// 定义NoteColumns的常量,用于后面创建数据库的表头
public interface NoteColumns {
/**
* The unique ID for a row
* <P> Type: INTEGER (long) </P>
*/
//行的唯一ID
public static final String ID = "_id";
/**
* The parent's id for note or folder
* <P> Type: INTEGER (long) </P>
*/
//便签或文件夹的父级ID
public static final String PARENT_ID = "parent_id";
/**
* Created data for note or folder
* <P> Type: INTEGER (long) </P>
*/
//以为便签或文件夹创建数据
public static final String CREATED_DATE = "created_date";
/**
* Latest modified date
* <P> Type: INTEGER (long) </P>
*/
//最新修改日期
public static final String MODIFIED_DATE = "modified_date";
/**
* Alert date
* <P> Type: INTEGER (long) </P>
*/
//警报日期
public static final String ALERTED_DATE = "alert_date";
/**
* Folder's name or text content of note
* <P> Type: TEXT </P>
*/
//便签的文件夹名称或文本内容
public static final String SNIPPET = "snippet";
/**
* Note's widget id
* <P> Type: INTEGER (long) </P>
*/
//小部件ID
public static final String WIDGET_ID = "widget_id";
/**
* Note's widget type
* <P> Type: INTEGER (long) </P>
*/
//小部件类型
public static final String WIDGET_TYPE = "widget_type";
/**
* Note's background color's id
* <P> Type: INTEGER (long) </P>
*/
//背景颜色的ID
public static final String BG_COLOR_ID = "bg_color_id";
/**
* For text note, it doesn't has attachment, for multi-media
* note, it has at least one attachment
* <P> Type: INTEGER </P>
*/
//对于文本便签，它没有附件；对于multi-media便签，它至少有一个附件
public static final String HAS_ATTACHMENT = "has_attachment";
/**
* Folder's count of notes
* <P> Type: INTEGER (long) </P>
*/
//文件夹的便签计数
public static final String NOTES_COUNT = "notes_count";
/**
* The file type: folder or note
* <P> Type: INTEGER </P>
*/
//类型：文件夹或便签
public static final String TYPE = "type";
/**
* The last sync id
* <P> Type: INTEGER (long) </P>
*/
//上一个同步ID
public static final String SYNC_ID = "sync_id";//同步
/**
* Sign to indicate local modified or not
* <P> Type: INTEGER </P>
*/
//标志表示是否本地修改
public static final String LOCAL_MODIFIED = "local_modified";
/**
* Original parent id before moving into temporary folder
* <P> Type : INTEGER </P>
*/
//移动到临时文件夹之前的原始父ID
public static final String ORIGIN_PARENT_ID = "origin_parent_id";
/**
* The gtask id
* <P> Type : TEXT </P>
*/
//gtask id，类型为文本
public static final String GTASK_ID = "gtask_id";
/**
* The version code
* <P> Type : INTEGER (long) </P>
*/
public static final String VERSION = "version";
}//这些常量主要是定义便签的属性的。
// 定义DataColumns的常量,用于后面创建数据库的表头
public interface DataColumns {
/**
* The unique ID for a row
* <P> Type: INTEGER (long) </P>
*/
//行的唯一ID
public static final String ID = "_id";
/**
* The MIME type of the item represented by this row.
* <P> Type: Text </P>
*/
//此行表示的项的MIME类型
public static final String MIME_TYPE = "mime_type";
/**
* The reference id to note that this data belongs to
* <P> Type: INTEGER (long) </P>
*/
//要注明此数据所属的引用id
public static final String NOTE_ID = "note_id";
/**
* Created data for note or folder
* <P> Type: INTEGER (long) </P>
*/
//已为便签或文件夹创建数据
public static final String CREATED_DATE = "created_date";
/**
* Latest modified date
* <P> Type: INTEGER (long) </P>
*/
//最新修改日期
public static final String MODIFIED_DATE = "modified_date";
/**
* Data's content
* <P> Type: TEXT </P>
*/
//数据的内容
public static final String CONTENT = "content";
/**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
* integer data type
* <P> Type: INTEGER </P>
*/
//通用数据列，含义是{@link #MIMETYPE}特定的，用于合并数据类型
public static final String DATA1 = "data1";
/**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
* integer data type
* <P> Type: INTEGER </P>
*/
//通用数据列，含义是{@link #MIMETYPE}特定的，用于合并数据类型
public static final String DATA2 = "data2";
/**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
* TEXT data type
* <P> Type: TEXT </P>
*/
//通用数据列，含义是{@link #MIMETYPE}特定的，用于文本数据类型
public static final String DATA3 = "data3";
/**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
* TEXT data type
* <P> Type: TEXT </P>
*/
//通用数据列，含义是{@link #MIMETYPE}特定的，用于文本数据类型
public static final String DATA4 = "data4";
/**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for
* TEXT data type
* <P> Type: TEXT </P>
*/
//通用数据列，含义是{@link #MIMETYPE}特定的，用于文本数据类型
public static final String DATA5 = "data5";
}//主要是定义存储便签内容数据的
public static final class TextNote implements DataColumns {
/**
* Mode to indicate the text in check list mode or not
* <P> Type: Integer 1:check list mode 0: normal mode </P>
*/
//模式：指示文本是否处于检查列表模式
public static final String MODE = DATA1;
public static final int MODE_CHECK_LIST = 1;
public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note";
public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note";
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note");
}//文本内容的数据结构
public static final class CallNote implements DataColumns {
/**
* Call date for this record
* <P> Type: INTEGER (long) </P>
*/
//此纪录的调用日期
public static final String CALL_DATE = DATA1;
/**
* Phone number for this record
* <P> Type: TEXT </P>
*/
//此纪录的电话号码
public static final String PHONE_NUMBER = DATA3;
public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note";
public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note";
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note");
}//电话内容的数据结构
}

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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.data;
import android.content.ContentValues;//就是用于保存一些数据（string boolean byte double float int long short ...）信息，这些信息可以被数据库操作时使用。
import android.content.Context;//加载和访问资源。（android中主要是这两个功能，但是这里具体不清楚）
import android.database.sqlite.SQLiteDatabase;;//主要提供了对应于添加、删除、更新、查询的操作方法： insert()、delete()、update()和query()。配合content.values
import android.database.sqlite.SQLiteOpenHelper;//用来管理数据的创建和版本更新
import android.util.Log;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.DataConstants;
import net.micode.notes.data.Notes.NoteColumns;
//数据库操作，用SQLOpenhelper,对一些note和文件进行数据库的操作，比如删除文件后，将文件里的note也相应删除
public class NotesDatabaseHelper extends SQLiteOpenHelper {
private static final String DB_NAME = "note.db";
private static final int DB_VERSION = 4;
public interface TABLE {//接口，分成note和data，在后面的程序里分别使用过
public static final String NOTE = "note";
public static final String DATA = "data";
}
private static final String TAG = "NotesDatabaseHelper";
private static NotesDatabaseHelper mInstance;
private static final String CREATE_NOTE_TABLE_SQL =
"CREATE TABLE " + TABLE.NOTE + "(" +
NoteColumns.ID + " INTEGER PRIMARY KEY," +
NoteColumns.PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
NoteColumns.ALERTED_DATE + " INTEGER NOT NULL DEFAULT 0," +
NoteColumns.BG_COLOR_ID + " INTEGER NOT NULL DEFAULT 0," +
NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
NoteColumns.HAS_ATTACHMENT + " INTEGER NOT NULL DEFAULT 0," +
NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
NoteColumns.NOTES_COUNT + " INTEGER NOT NULL DEFAULT 0," +
NoteColumns.SNIPPET + " TEXT NOT NULL DEFAULT ''," +
NoteColumns.TYPE + " INTEGER NOT NULL DEFAULT 0," +
NoteColumns.WIDGET_ID + " INTEGER NOT NULL DEFAULT 0," +
NoteColumns.WIDGET_TYPE + " INTEGER NOT NULL DEFAULT -1," +
NoteColumns.SYNC_ID + " INTEGER NOT NULL DEFAULT 0," +
NoteColumns.LOCAL_MODIFIED + " INTEGER NOT NULL DEFAULT 0," +
NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," +
NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" +
")";//数据库中需要存储的项目的名称，就相当于创建一个表格的表头的内容。
private static final String CREATE_DATA_TABLE_SQL =
"CREATE TABLE " + TABLE.DATA + "(" +
DataColumns.ID + " INTEGER PRIMARY KEY," +
DataColumns.MIME_TYPE + " TEXT NOT NULL," +
DataColumns.NOTE_ID + " INTEGER NOT NULL DEFAULT 0," +
NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
DataColumns.CONTENT + " TEXT NOT NULL DEFAULT ''," +
DataColumns.DATA1 + " INTEGER," +
DataColumns.DATA2 + " INTEGER," +
DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," +
DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," +
DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" +
")";//和上面的功能一样，主要是存储的项目不同
private static final String CREATE_DATA_NOTE_ID_INDEX_SQL =
"CREATE INDEX IF NOT EXISTS note_id_index ON " +
TABLE.DATA + "(" + DataColumns.NOTE_ID + ");";//存储便签编号的一个数据表格
/**
* Increase folder's note count when move note to the folder
*/
private static final String NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
"CREATE TRIGGER increase_folder_count_on_update "+
" AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
" BEGIN " +
" UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
" END";//在文件夹中移入一个Note之后需要更改的数据的表格。
/**
* Decrease folder's note count when move note from folder
*/
private static final String NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
"CREATE TRIGGER decrease_folder_count_on_update " +
" AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
" BEGIN " +
" UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
" AND " + NoteColumns.NOTES_COUNT + ">0" + ";" +
" END";//在文件夹中移除一个Note之后需要更改的数据的表格。
/**
* Increase folder's note count when insert new note to the folder
*/
private static final String NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER =
"CREATE TRIGGER increase_folder_count_on_insert " +
" AFTER INSERT ON " + TABLE.NOTE +
" BEGIN " +
" UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
" END";//在文件夹中插入一个Note之后需要更改的数据的表格。
/**
* Decrease folder's note count when delete note from the folder
*/
private static final String NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER =
"CREATE TRIGGER decrease_folder_count_on_delete " +
" AFTER DELETE ON " + TABLE.NOTE +
" BEGIN " +
" UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
" AND " + NoteColumns.NOTES_COUNT + ">0;" +
" END";//在文件夹中删除一个Note之后需要更改的数据的表格。
/**
* Update note's content when insert data with type {@link DataConstants#NOTE}
*/
private static final String DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER =
"CREATE TRIGGER update_note_content_on_insert " +
" AFTER INSERT ON " + TABLE.DATA +
" WHEN new." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
" BEGIN" +
" UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
" END";//在文件夹中对一个Note导入新的数据之后需要更改的数据的表格。
/**
* Update note's content when data with {@link DataConstants#NOTE} type has changed
*/
private static final String DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER =
"CREATE TRIGGER update_note_content_on_update " +
" AFTER UPDATE ON " + TABLE.DATA +
" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
" BEGIN" +
" UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
" END";//Note数据被修改之后需要更改的数据的表格。
/**
* Update note's content when data with {@link DataConstants#NOTE} type has deleted
*/
private static final String DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER =
"CREATE TRIGGER update_note_content_on_delete " +
" AFTER delete ON " + TABLE.DATA +
" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
" BEGIN" +
" UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.SNIPPET + "=''" +
" WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" +
" END";//Note数据被删除之后需要更改的数据的表格。
/**
* Delete datas belong to note which has been deleted
*/
private static final String NOTE_DELETE_DATA_ON_DELETE_TRIGGER =
"CREATE TRIGGER delete_data_on_delete " +
" AFTER DELETE ON " + TABLE.NOTE +
" BEGIN" +
" DELETE FROM " + TABLE.DATA +
" WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" +
" END";//删除已删除的便签的数据后需要更改的数据的表格
/**
* Delete notes belong to folder which has been deleted
*/
private static final String FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER =
"CREATE TRIGGER folder_delete_notes_on_delete " +
" AFTER DELETE ON " + TABLE.NOTE +
" BEGIN" +
" DELETE FROM " + TABLE.NOTE +
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
" END";//删除已删除的文件夹的便签后需要更改的数据的表格
/**
* Move notes belong to folder which has been moved to trash folder
*/
private static final String FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER =
"CREATE TRIGGER folder_move_notes_on_trash " +
" AFTER UPDATE ON " + TABLE.NOTE +
" WHEN new." + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
" BEGIN" +
" UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
" END";//还原垃圾桶中便签后需要更改的数据的表格
public NotesDatabaseHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION);
}//构造函数，传入数据库的名称和版本
public void createNoteTable(SQLiteDatabase db) {
db.execSQL(CREATE_NOTE_TABLE_SQL);
reCreateNoteTableTriggers(db);
createSystemFolder(db);
Log.d(TAG, "note table has been created");
}//创建表格（用来存储标签属性）
private void reCreateNoteTableTriggers(SQLiteDatabase db) {
db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_update");
db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_update");
db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_delete");
db.execSQL("DROP TRIGGER IF EXISTS delete_data_on_delete");
db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_insert");
db.execSQL("DROP TRIGGER IF EXISTS folder_delete_notes_on_delete");
db.execSQL("DROP TRIGGER IF EXISTS folder_move_notes_on_trash");
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER);
db.execSQL(NOTE_DELETE_DATA_ON_DELETE_TRIGGER);
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER);
db.execSQL(FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER);
db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER);
}//execSQL是数据库操作的API，主要是更改行为的SQL语句
//在这里主要是用来重新创建上述定义的表格用的，先删除原来有的数据库的触发器再重新创建新的数据库
private void createSystemFolder(SQLiteDatabase db) {
ContentValues values = new ContentValues();
/**
* call record foler for call notes
*/
values.put(NoteColumns.ID, Notes.ID_CALL_RECORD_FOLDER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
db.insert(TABLE.NOTE, null, values);
/**
* root folder which is default folder
*/
values.clear();
values.put(NoteColumns.ID, Notes.ID_ROOT_FOLDER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
db.insert(TABLE.NOTE, null, values);
/**
* temporary folder which is used for moving note
*/
values.clear();
values.put(NoteColumns.ID, Notes.ID_TEMPARAY_FOLDER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
db.insert(TABLE.NOTE, null, values);
/**
* create trash folder
*/
values.clear();
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
db.insert(TABLE.NOTE, null, values);
}
//创建几个系统文件夹
public void createDataTable(SQLiteDatabase db) {
db.execSQL(CREATE_DATA_TABLE_SQL);
reCreateDataTableTriggers(db);
db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL);
Log.d(TAG, "data table has been created");
}//创建表格（用来存储标签内容）
private void reCreateDataTableTriggers(SQLiteDatabase db) {
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_insert");
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_update");
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_delete");
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER);
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER);
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER);
}//同上面的execSQL
static synchronized NotesDatabaseHelper getInstance(Context context) {
if (mInstance == null) {
mInstance = new NotesDatabaseHelper(context);
}
return mInstance;
}/**上网查是为解决同一时刻只能有一个线程执行
*在写程序库代码时，有时有一个类需要被所有的其他类使用，
但又要求这个类只能被实例化一次，是个服务类，定义一次，其它类使用同一个这个类的实例*/
@Override
public void onCreate(SQLiteDatabase db) {
createNoteTable(db);
createDataTable(db);
}//实现两个表格（上面创建的两个表格）
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
boolean reCreateTriggers = false;
boolean skipV2 = false;
if (oldVersion == 1) {
upgradeToV2(db);
skipV2 = true; // this upgrade including the upgrade from v2 to v3
oldVersion++;
}
if (oldVersion == 2 && !skipV2) {
upgradeToV3(db);
reCreateTriggers = true;
oldVersion++;
}
if (oldVersion == 3) {
upgradeToV4(db);
oldVersion++;
}
if (reCreateTriggers) {
reCreateNoteTableTriggers(db);
reCreateDataTableTriggers(db);
}
if (oldVersion != newVersion) {
throw new IllegalStateException("Upgrade notes database to version " + newVersion
+ "fails");
}
}//数据库版本的更新（数据库内容的更改）
private void upgradeToV2(SQLiteDatabase db) {
db.execSQL("DROP TABLE IF EXISTS " + TABLE.NOTE);
db.execSQL("DROP TABLE IF EXISTS " + TABLE.DATA);
createNoteTable(db);
createDataTable(db);
}//更新到V2版本
private void upgradeToV3(SQLiteDatabase db) {
// drop unused triggers
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_insert");
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_delete");
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_update");
// add a column for gtask id
db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.GTASK_ID
+ " TEXT NOT NULL DEFAULT ''");
// add a trash system folder
ContentValues values = new ContentValues();
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
db.insert(TABLE.NOTE, null, values);
}//更新到V3版本
private void upgradeToV4(SQLiteDatabase db) {
db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION
+ " INTEGER NOT NULL DEFAULT 0");
}//更新到V4版本
}

968
NotesListActivity.java
Unescape View File

@ -1,968 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.appwidget.AppWidgetManager;
import android.content.AsyncQueryHandler;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.util.Log;
import android.view.ActionMode;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Display;
import android.view.HapticFeedbackConstants;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MenuItem.OnMenuItemClickListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnCreateContextMenuListener;
import android.view.View.OnTouchListener;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.PopupMenu;
import android.widget.TextView;
import android.widget.Toast;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.gtask.remote.GTaskSyncService;
import net.micode.notes.model.WorkingNote;
import net.micode.notes.tool.BackupUtils;
import net.micode.notes.tool.DataUtils;
import net.micode.notes.tool.ResourceParser;
import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute;
import net.micode.notes.widget.NoteWidgetProvider_2x;
import net.micode.notes.widget.NoteWidgetProvider_4x;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.HashSet;
//主界面，一进入就是这个界面
public class NotesListActivity extends Activity implements OnClickListener, OnItemLongClickListener {
private static final int FOLDER_NOTE_LIST_QUERY_TOKEN = 0;
private static final int FOLDER_LIST_QUERY_TOKEN = 1;
private static final int MENU_FOLDER_DELETE = 0;
private static final int MENU_FOLDER_VIEW = 1;
private static final int MENU_FOLDER_CHANGE_NAME = 2;
private static final String PREFERENCE_ADD_INTRODUCTION = "net.micode.notes.introduction";//单行超过80个字符
private enum ListEditState {
NOTE_LIST, SUB_FOLDER, CALL_RECORD_FOLDER
};
private ListEditState mState;
private BackgroundQueryHandler mBackgroundQueryHandler;
private NotesListAdapter mNotesListAdapter;
private ListView mNotesListView;
private Button mAddNewNote;
private boolean mDispatch;
private int mOriginY;
private int mDispatchY;
private TextView mTitleBar;
private long mCurrentFolderId;
private ContentResolver mContentResolver;
private ModeCallback mModeCallBack;
private static final String TAG = "NotesListActivity";
public static final int NOTES_LISTVIEW_SCROLL_RATE = 30;
private NoteItemData mFocusNoteDataItem;
private static final String NORMAL_SELECTION = NoteColumns.PARENT_ID + "=?";
private static final String ROOT_FOLDER_SELECTION = "(" + NoteColumns.TYPE + "<>"
+ Notes.TYPE_SYSTEM + " AND " + NoteColumns.PARENT_ID + "=?)" + " OR ("
+ NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER + " AND "
+ NoteColumns.NOTES_COUNT + ">0)";
private final static int REQUEST_CODE_OPEN_NODE = 102;
private final static int REQUEST_CODE_NEW_NODE = 103;
@Override
//创建类
protected void onCreate(Bundle savedInstanceState) {//需要是final类型，根据程序上下文环境，java关键字final有“这是无法改变的”或“终态的”
//含义，它可以修饰非抽象类、非抽象类成员方法和变量
//final类不能被继承，没有字类，final类中的方法默认是final的
//final方法不能被子类的方法覆盖，但可以被继承
//final成员变量表示常量，只能被赋值一次，赋值后值不再改变
//final不能用于修饰构造方法
super.onCreate(savedInstanceState);//调用父类的onCreate函数
setContentView(R.layout.note_list);
initResources();
/**
* Insert an introduction when user firstly use this application
*/
setAppInfoFromRawRes();
}
@Override
//返回一些子模块完成的数据交给主Activity处理
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK
&& (requestCode == REQUEST_CODE_OPEN_NODE || requestCode == REQUEST_CODE_NEW_NODE)) {//若结果值和要求值符合要求
mNotesListAdapter.changeCursor(null);
} else {
super.onActivityResult(requestCode, resultCode, data);//调用Activity的onActivityResult
}
}
private void setAppInfoFromRawRes() {
//Android平台给我们提供了一个SharedPreferences类，它是一个轻量级的存储类，特别适合用于保存软件配置参数
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
if (!sp.getBoolean(PREFERENCE_ADD_INTRODUCTION, false)) {
StringBuilder sb = new StringBuilder();
InputStream in = null;
try {
//把资源文件放到应用程序的/raw/raw下，那么就可以在应用中使用getResources获取资源后，
//以openRawResource方法（不带后缀的资源文件名）打开这个文件
in = getResources().openRawResource(R.raw.introduction);
if (in != null) {
InputStreamReader isr = new InputStreamReader(in);
BufferedReader br = new BufferedReader(isr);
char [] buf = new char[1024];//自行定义的数值，使用者不知道有什么意义
int len = 0;
while ((len = br.read(buf)) > 0) {
sb.append(buf, 0, len);
}
} else {
Log.e(TAG, "Read introduction file error");
return;
}
} catch (IOException e) {
e.printStackTrace();
return;
} finally {
if(in != null) {
try {
in.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
//创建空的WorkingNote
WorkingNote note = WorkingNote.createEmptyNote(this, Notes.ID_ROOT_FOLDER,
AppWidgetManager.INVALID_APPWIDGET_ID, Notes.TYPE_WIDGET_INVALIDE,
ResourceParser.RED);
note.setWorkingText(sb.toString());
if (note.saveNote()) {
//更新保存note的信息
sp.edit().putBoolean(PREFERENCE_ADD_INTRODUCTION, true).commit();
} else {
Log.e(TAG, "Save introduction note error");
return;
}
}
}
@Override
protected void onStart() {
super.onStart();
startAsyncNotesListQuery();
}
//初始化资源
private void initResources() {
mContentResolver = this.getContentResolver();//获取应用程序的数据，得到类似于数据表的东西
mBackgroundQueryHandler = new BackgroundQueryHandler(this.getContentResolver());
mCurrentFolderId = Notes.ID_ROOT_FOLDER;
//findViewById是安卓编程的定位函数，主要是引用.R文件里的引用名
mNotesListView = (ListView) findViewById(R.id.notes_list);//绑定xml中的ListView，作为Item的容器
mNotesListView.addFooterView(LayoutInflater.from(this).inflate(R.layout.note_list_footer, null),
null, false);
mNotesListView.setOnItemClickListener(new OnListItemClickListener());
mNotesListView.setOnItemLongClickListener(this);
mNotesListAdapter = new NotesListAdapter(this);
mNotesListView.setAdapter(mNotesListAdapter);
mAddNewNote = (Button) findViewById(R.id.btn_new_note);//在activity中要获取该按钮
mAddNewNote.setOnClickListener(this);
mAddNewNote.setOnTouchListener(new NewNoteOnTouchListener());
mDispatch = false;
mDispatchY = 0;
mOriginY = 0;
mTitleBar = (TextView) findViewById(R.id.tv_title_bar);
mState = ListEditState.NOTE_LIST;
mModeCallBack = new ModeCallback();
}
//继承自ListView.MultiChoiceModeListener和OnMenuItemClickListener
private class ModeCallback implements ListView.MultiChoiceModeListener, OnMenuItemClickListener {
private DropdownMenu mDropDownMenu;
private ActionMode mActionMode;
private MenuItem mMoveMenu;
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
getMenuInflater().inflate(R.menu.note_list_options, menu);
menu.findItem(R.id.delete).setOnMenuItemClickListener(this);
mMoveMenu = menu.findItem(R.id.move);
if (mFocusNoteDataItem.getParentId() == Notes.ID_CALL_RECORD_FOLDER
|| DataUtils.getUserFolderCount(mContentResolver) == 0) {
mMoveMenu.setVisible(false);
} else {
mMoveMenu.setVisible(true);
mMoveMenu.setOnMenuItemClickListener(this);
}
mActionMode = mode;
mNotesListAdapter.setChoiceMode(true);
mNotesListView.setLongClickable(false);
mAddNewNote.setVisibility(View.GONE);
View customView = LayoutInflater.from(NotesListActivity.this).inflate(
R.layout.note_list_dropdown_menu, null);
mode.setCustomView(customView);
mDropDownMenu = new DropdownMenu(NotesListActivity.this,
(Button) customView.findViewById(R.id.selection_menu),
R.menu.note_list_dropdown);
mDropDownMenu.setOnDropdownMenuItemClickListener(new PopupMenu.OnMenuItemClickListener(){
public boolean onMenuItemClick(MenuItem item) {
mNotesListAdapter.selectAll(!mNotesListAdapter.isAllSelected());
updateMenu();
return true;
}
});
return true;
}
//更新菜单
private void updateMenu() {
int selectedCount = mNotesListAdapter.getSelectedCount();
// Update dropdown menu
String format = getResources().getString(R.string.menu_select_title, selectedCount);
mDropDownMenu.setTitle(format);//更改标题
MenuItem item = mDropDownMenu.findItem(R.id.action_select_all);
if (item != null) {
if (mNotesListAdapter.isAllSelected()) {
item.setChecked(true);
item.setTitle(R.string.menu_deselect_all);
} else {
item.setChecked(false);
item.setTitle(R.string.menu_select_all);
}
}
}
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
// TODO Auto-generated method stub
return false;
}
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
// TODO Auto-generated method stub
return false;
}
public void onDestroyActionMode(ActionMode mode) {
mNotesListAdapter.setChoiceMode(false);
mNotesListView.setLongClickable(true);
mAddNewNote.setVisibility(View.VISIBLE);
}
public void finishActionMode() {
mActionMode.finish();
}
public void onItemCheckedStateChanged(ActionMode mode, int position, long id,
boolean checked) {
mNotesListAdapter.setCheckedItem(position, checked);
updateMenu();
}
public boolean onMenuItemClick(MenuItem item) {
if (mNotesListAdapter.getSelectedCount() == 0) {
Toast.makeText(NotesListActivity.this, getString(R.string.menu_select_none),
Toast.LENGTH_SHORT).show();
return true;
}
switch (item.getItemId()) {
case R.id.delete:
AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
builder.setTitle(getString(R.string.alert_title_delete));
builder.setIcon(android.R.drawable.ic_dialog_alert);
builder.setMessage(getString(R.string.alert_message_delete_notes,
mNotesListAdapter.getSelectedCount()));
builder.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
batchDelete();
}
});
builder.setNegativeButton(android.R.string.cancel, null);
builder.show();
break;
case R.id.move:
startQueryDestinationFolders();
break;
default:
return false;
}
return true;
}
}
private class NewNoteOnTouchListener implements OnTouchListener {
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN: {
Display display = getWindowManager().getDefaultDisplay();
int screenHeight = display.getHeight();
int newNoteViewHeight = mAddNewNote.getHeight();
int start = screenHeight - newNoteViewHeight;
int eventY = start + (int) event.getY();
/**
* Minus TitleBar's height
*/
if (mState == ListEditState.SUB_FOLDER) {
eventY -= mTitleBar.getHeight();
start -= mTitleBar.getHeight();
}
/**
* HACKME:When click the transparent part of "New Note" button, dispatch
* the event to the list view behind this button. The transparent part of
* "New Note" button could be expressed by formula y=-0.12x+94（Unit:pixel）
* and the line top of the button. The coordinate based on left of the "New
* Note" button. The 94 represents maximum height of the transparent part.
* Notice that, if the background of the button changes, the formula should
* also change. This is very bad, just for the UI designer's strong requirement.
*/
if (event.getY() < (event.getX() * (-0.12) + 94)) {
View view = mNotesListView.getChildAt(mNotesListView.getChildCount() - 1
- mNotesListView.getFooterViewsCount());
if (view != null && view.getBottom() > start
&& (view.getTop() < (start + 94))) {
mOriginY = (int) event.getY();
mDispatchY = eventY;
event.setLocation(event.getX(), mDispatchY);
mDispatch = true;
return mNotesListView.dispatchTouchEvent(event);
}
}
break;
}
case MotionEvent.ACTION_MOVE: {
if (mDispatch) {
mDispatchY += (int) event.getY() - mOriginY;
event.setLocation(event.getX(), mDispatchY);
return mNotesListView.dispatchTouchEvent(event);
}
break;
}
default: {
if (mDispatch) {
event.setLocation(event.getX(), mDispatchY);
mDispatch = false;
return mNotesListView.dispatchTouchEvent(event);
}
break;
}
}
return false;
}
};
private void startAsyncNotesListQuery() {
String selection = (mCurrentFolderId == Notes.ID_ROOT_FOLDER) ? ROOT_FOLDER_SELECTION
: NORMAL_SELECTION;
mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null,
Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, new String[] {
String.valueOf(mCurrentFolderId)
}, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
}
private final class BackgroundQueryHandler extends AsyncQueryHandler {
public BackgroundQueryHandler(ContentResolver contentResolver) {
super(contentResolver);
}
@Override
protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
switch (token) {
case FOLDER_NOTE_LIST_QUERY_TOKEN:
mNotesListAdapter.changeCursor(cursor);
break;
case FOLDER_LIST_QUERY_TOKEN:
if (cursor != null && cursor.getCount() > 0) {
showFolderListMenu(cursor);
} else {
Log.e(TAG, "Query folder failed");
}
break;
default:
return;
}
}
}
private void showFolderListMenu(Cursor cursor) {
AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
builder.setTitle(R.string.menu_title_select_folder);
final FoldersListAdapter adapter = new FoldersListAdapter(this, cursor);
builder.setAdapter(adapter, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
DataUtils.batchMoveToFolder(mContentResolver,
mNotesListAdapter.getSelectedItemIds(), adapter.getItemId(which));
Toast.makeText(
NotesListActivity.this,
getString(R.string.format_move_notes_to_folder,
mNotesListAdapter.getSelectedCount(),
adapter.getFolderName(NotesListActivity.this, which)),
Toast.LENGTH_SHORT).show();
mModeCallBack.finishActionMode();
}
});
builder.show();
}
private void createNewNote() {
Intent intent = new Intent(this, NoteEditActivity.class);
intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mCurrentFolderId);
this.startActivityForResult(intent, REQUEST_CODE_NEW_NODE);
}
private void batchDelete() {
new AsyncTask<Void, Void, HashSet<AppWidgetAttribute>>() {
protected HashSet<AppWidgetAttribute> doInBackground(Void... unused) {
HashSet<AppWidgetAttribute> widgets = mNotesListAdapter.getSelectedWidget();
if (!isSyncMode()) {
// if not synced, delete notes directly
if (DataUtils.batchDeleteNotes(mContentResolver, mNotesListAdapter
.getSelectedItemIds())) {
} else {
Log.e(TAG, "Delete notes error, should not happens");
}
} else {
// in sync mode, we'll move the deleted note into the trash
// folder
if (!DataUtils.batchMoveToFolder(mContentResolver, mNotesListAdapter
.getSelectedItemIds(), Notes.ID_TRASH_FOLER)) {
Log.e(TAG, "Move notes to trash folder error, should not happens");
}
}
return widgets;
}
@Override
protected void onPostExecute(HashSet<AppWidgetAttribute> widgets) {
if (widgets != null) {
for (AppWidgetAttribute widget : widgets) {
if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID
&& widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) {
updateWidget(widget.widgetId, widget.widgetType);
}
}
}
mModeCallBack.finishActionMode();
}
}.execute();
}
private void deleteFolder(long folderId) {
if (folderId == Notes.ID_ROOT_FOLDER) {
Log.e(TAG, "Wrong folder id, should not happen " + folderId);
return;
}
HashSet<Long> ids = new HashSet<Long>();
ids.add(folderId);
HashSet<AppWidgetAttribute> widgets = DataUtils.getFolderNoteWidget(mContentResolver,
folderId);
if (!isSyncMode()) {
// if not synced, delete folder directly
DataUtils.batchDeleteNotes(mContentResolver, ids);
} else {
// in sync mode, we'll move the deleted folder into the trash folder
DataUtils.batchMoveToFolder(mContentResolver, ids, Notes.ID_TRASH_FOLER);
}
if (widgets != null) {
for (AppWidgetAttribute widget : widgets) {
if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID
&& widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) {
updateWidget(widget.widgetId, widget.widgetType);
}
}
}
}
private void openNode(NoteItemData data) {
Intent intent = new Intent(this, NoteEditActivity.class);
intent.setAction(Intent.ACTION_VIEW);
intent.putExtra(Intent.EXTRA_UID, data.getId());
this.startActivityForResult(intent, REQUEST_CODE_OPEN_NODE);
}
private void openFolder(NoteItemData data) {
mCurrentFolderId = data.getId();
startAsyncNotesListQuery();
if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
mState = ListEditState.CALL_RECORD_FOLDER;
mAddNewNote.setVisibility(View.GONE);
} else {
mState = ListEditState.SUB_FOLDER;
}
if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
mTitleBar.setText(R.string.call_record_folder_name);
} else {
mTitleBar.setText(data.getSnippet());
}
mTitleBar.setVisibility(View.VISIBLE);
}
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_new_note:
createNewNote();
break;
default:
break;
}
}
private void showSoftInput() {
InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
if (inputMethodManager != null) {
inputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
}
}
private void hideSoftInput(View view) {
InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
private void showCreateOrModifyFolderDialog(final boolean create) {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
View view = LayoutInflater.from(this).inflate(R.layout.dialog_edit_text, null);
final EditText etName = (EditText) view.findViewById(R.id.et_foler_name);
showSoftInput();
if (!create) {
if (mFocusNoteDataItem != null) {
etName.setText(mFocusNoteDataItem.getSnippet());
builder.setTitle(getString(R.string.menu_folder_change_name));
} else {
Log.e(TAG, "The long click data item is null");
return;
}
} else {
etName.setText("");
builder.setTitle(this.getString(R.string.menu_create_folder));
}
builder.setPositiveButton(android.R.string.ok, null);
builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
hideSoftInput(etName);
}
});
final Dialog dialog = builder.setView(view).show();
final Button positive = (Button)dialog.findViewById(android.R.id.button1);
positive.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
hideSoftInput(etName);
String name = etName.getText().toString();
if (DataUtils.checkVisibleFolderName(mContentResolver, name)) {
Toast.makeText(NotesListActivity.this, getString(R.string.folder_exist, name),
Toast.LENGTH_LONG).show();
etName.setSelection(0, etName.length());
return;
}
if (!create) {
if (!TextUtils.isEmpty(name)) {
ContentValues values = new ContentValues();
values.put(NoteColumns.SNIPPET, name);
values.put(NoteColumns.TYPE, Notes.TYPE_FOLDER);
values.put(NoteColumns.LOCAL_MODIFIED, 1);
mContentResolver.update(Notes.CONTENT_NOTE_URI, values, NoteColumns.ID
+ "=?", new String[] {
String.valueOf(mFocusNoteDataItem.getId())
});
}
} else if (!TextUtils.isEmpty(name)) {
ContentValues values = new ContentValues();
values.put(NoteColumns.SNIPPET, name);
values.put(NoteColumns.TYPE, Notes.TYPE_FOLDER);
mContentResolver.insert(Notes.CONTENT_NOTE_URI, values);
}
dialog.dismiss();
}
});
if (TextUtils.isEmpty(etName.getText())) {
positive.setEnabled(false);
}
/**
* When the name edit text is null, disable the positive button
*/
etName.addTextChangedListener(new TextWatcher() {
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
// TODO Auto-generated method stub
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (TextUtils.isEmpty(etName.getText())) {
positive.setEnabled(false);
} else {
positive.setEnabled(true);
}
}
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
}
/**按返回键时根据情况更改类中的数据 */
@Override
public void onBackPressed() {
switch (mState) {
case SUB_FOLDER:
mCurrentFolderId = Notes.ID_ROOT_FOLDER;
mState = ListEditState.NOTE_LIST;
startAsyncNotesListQuery();
mTitleBar.setVisibility(View.GONE);
break;
case CALL_RECORD_FOLDER:
mCurrentFolderId = Notes.ID_ROOT_FOLDER;
mState = ListEditState.NOTE_LIST;
mAddNewNote.setVisibility(View.VISIBLE);
mTitleBar.setVisibility(View.GONE);
startAsyncNotesListQuery();
break;
case NOTE_LIST:
super.onBackPressed();
break;
default:
break;
}
}
/**根据不同类型的widget更新插件，通过intent传送数据； */
private void updateWidget(int appWidgetId, int appWidgetType) {
Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
if (appWidgetType == Notes.TYPE_WIDGET_2X) {
intent.setClass(this, NoteWidgetProvider_2x.class);
} else if (appWidgetType == Notes.TYPE_WIDGET_4X) {
intent.setClass(this, NoteWidgetProvider_4x.class);
} else {
Log.e(TAG, "Unspported widget type");
return;
}
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] {
appWidgetId
});
sendBroadcast(intent);
setResult(RESULT_OK, intent);
}
/**声明监听器，建立菜单，包括名称、视图、删除、更改名称操作 */
private final OnCreateContextMenuListener mFolderOnCreateContextMenuListener = new OnCreateContextMenuListener() {
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
if (mFocusNoteDataItem != null) {
menu.setHeaderTitle(mFocusNoteDataItem.getSnippet());
menu.add(0, MENU_FOLDER_VIEW, 0, R.string.menu_folder_view);
menu.add(0, MENU_FOLDER_DELETE, 0, R.string.menu_folder_delete);
menu.add(0, MENU_FOLDER_CHANGE_NAME, 0, R.string.menu_folder_change_name);
}
}
};
@Override
public void onContextMenuClosed(Menu menu) {
if (mNotesListView != null) {
mNotesListView.setOnCreateContextMenuListener(null);
}
super.onContextMenuClosed(menu);
}
/**针对menu中不同的选择进行不同的处理 */
@Override
public boolean onContextItemSelected(MenuItem item) {
if (mFocusNoteDataItem == null) {
Log.e(TAG, "The long click data item is null");
return false;
}
switch (item.getItemId()) {
case MENU_FOLDER_VIEW:
openFolder(mFocusNoteDataItem);//打开对应文件
break;
case MENU_FOLDER_DELETE:
AlertDialog.Builder builder = new AlertDialog.Builder(this);//设置确认是否删除的对话框
builder.setTitle(getString(R.string.alert_title_delete));
builder.setIcon(android.R.drawable.ic_dialog_alert);
builder.setMessage(getString(R.string.alert_message_delete_folder));
builder.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
deleteFolder(mFocusNoteDataItem.getId());
}
});
builder.setNegativeButton(android.R.string.cancel, null);
builder.show();//显示对话框
break;
case MENU_FOLDER_CHANGE_NAME:
showCreateOrModifyFolderDialog(false);
break;
default:
break;
}
return true;
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
menu.clear();
if (mState == ListEditState.NOTE_LIST) {
getMenuInflater().inflate(R.menu.note_list, menu);
// set sync or sync_cancel
menu.findItem(R.id.menu_sync).setTitle(
GTaskSyncService.isSyncing() ? R.string.menu_sync_cancel : R.string.menu_sync);
} else if (mState == ListEditState.SUB_FOLDER) {
getMenuInflater().inflate(R.menu.sub_folder, menu);
} else if (mState == ListEditState.CALL_RECORD_FOLDER) {
getMenuInflater().inflate(R.menu.call_record_folder, menu);
} else {
Log.e(TAG, "Wrong state:" + mState);
}
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_new_folder: {
showCreateOrModifyFolderDialog(true);
break;
}
case R.id.menu_export_text: {
exportNoteToText();
break;
}
case R.id.menu_sync: {
if (isSyncMode()) {
if (TextUtils.equals(item.getTitle(), getString(R.string.menu_sync))) {
GTaskSyncService.startSync(this);
} else {
GTaskSyncService.cancelSync(this);
}
} else {
startPreferenceActivity();
}
break;
}
case R.id.menu_setting: {
startPreferenceActivity();
break;
}
case R.id.menu_new_note: {
createNewNote();
break;
}
case R.id.menu_search:
onSearchRequested();
break;
default:
break;
}
return true;
}
/**直接调用startSearch函数 */
@Override
public boolean onSearchRequested() {
startSearch(null, false, null /* appData */, false);
return true;
}
/**函数功能：实现将便签导出到文本功能 */
private void exportNoteToText() {
final BackupUtils backup = BackupUtils.getInstance(NotesListActivity.this);
new AsyncTask<Void, Void, Integer>() {
@Override
protected Integer doInBackground(Void... unused) {
return backup.exportToText();
}
@Override
protected void onPostExecute(Integer result) {
if (result == BackupUtils.STATE_SD_CARD_UNMOUONTED) {
AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
builder.setTitle(NotesListActivity.this
.getString(R.string.failed_sdcard_export));
builder.setMessage(NotesListActivity.this
.getString(R.string.error_sdcard_unmounted));
builder.setPositiveButton(android.R.string.ok, null);
builder.show();
} else if (result == BackupUtils.STATE_SUCCESS) {
AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
builder.setTitle(NotesListActivity.this
.getString(R.string.success_sdcard_export));
builder.setMessage(NotesListActivity.this.getString(
R.string.format_exported_file_location, backup
.getExportedTextFileName(), backup.getExportedTextFileDir()));
builder.setPositiveButton(android.R.string.ok, null);
builder.show();
} else if (result == BackupUtils.STATE_SYSTEM_ERROR) {
AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
builder.setTitle(NotesListActivity.this
.getString(R.string.failed_sdcard_export));
builder.setMessage(NotesListActivity.this
.getString(R.string.error_sdcard_export));
builder.setPositiveButton(android.R.string.ok, null);
builder.show();
}
}
}.execute();
}
/**判断是否正在同步 */
private boolean isSyncMode() {
return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0;
}
/**跳转到PreferenceActivity界面 */
private void startPreferenceActivity() {
Activity from = getParent() != null ? getParent() : this;
Intent intent = new Intent(from, NotesPreferenceActivity.class);
from.startActivityIfNeeded(intent, -1);
}
/**函数功能：实现对便签列表项的点击事件（短按） */
private class OnListItemClickListener implements OnItemClickListener {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if (view instanceof NotesListItem) {
NoteItemData item = ((NotesListItem) view).getItemData();
if (mNotesListAdapter.isInChoiceMode()) {
if (item.getType() == Notes.TYPE_NOTE) {
position = position - mNotesListView.getHeaderViewsCount();
mModeCallBack.onItemCheckedStateChanged(null, position, id,
!mNotesListAdapter.isSelectedItem(position));
}
return;
}
switch (mState) {
case NOTE_LIST:
if (item.getType() == Notes.TYPE_FOLDER
|| item.getType() == Notes.TYPE_SYSTEM) {
openFolder(item);
} else if (item.getType() == Notes.TYPE_NOTE) {
openNode(item);
} else {
Log.e(TAG, "Wrong note type in NOTE_LIST");
}
break;
case SUB_FOLDER:
case CALL_RECORD_FOLDER:
if (item.getType() == Notes.TYPE_NOTE) {
openNode(item);
} else {
Log.e(TAG, "Wrong note type in SUB_FOLDER");
}
break;
default:
break;
}
}
}
}
//查询目标文件
private void startQueryDestinationFolders() {
String selection = NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>? AND " + NoteColumns.ID + "<>?";
selection = (mState == ListEditState.NOTE_LIST) ? selection:
"(" + selection + ") OR (" + NoteColumns.ID + "=" + Notes.ID_ROOT_FOLDER + ")";
mBackgroundQueryHandler.startQuery(FOLDER_LIST_QUERY_TOKEN,
null,
Notes.CONTENT_NOTE_URI,
FoldersListAdapter.PROJECTION,
selection,
new String[] {
String.valueOf(Notes.TYPE_FOLDER),
String.valueOf(Notes.ID_TRASH_FOLER),
String.valueOf(mCurrentFolderId)
},
NoteColumns.MODIFIED_DATE + " DESC");
}
/**长按某一项时进行的操作
* 如果长按的是便签，则通过ActionMode菜单实现；如果长按的是文件夹，则通过ContextMenu菜单实现
*/
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
if (view instanceof NotesListItem) {
mFocusNoteDataItem = ((NotesListItem) view).getItemData();
if (mFocusNoteDataItem.getType() == Notes.TYPE_NOTE && !mNotesListAdapter.isInChoiceMode()) {
if (mNotesListView.startActionMode(mModeCallBack) != null) {
mModeCallBack.onItemCheckedStateChanged(null, position, id, true);
mNotesListView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
} else {
Log.e(TAG, "startActionMode fails");
}
} else if (mFocusNoteDataItem.getType() == Notes.TYPE_FOLDER) {
mNotesListView.setOnCreateContextMenuListener(mFolderOnCreateContextMenuListener);
}
}
return false;
}
}

232
NotesListAdapter.java
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@ -1,232 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import android.content.Context;
import android.database.Cursor;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CursorAdapter;
import net.micode.notes.data.Notes;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
/*
直译为便签表连接器，继承了CursorAdapter，它为cursor和ListView提供了连接的桥梁，
所以NotesListAdapter实现的是鼠标和编辑便签链接的桥梁。
*/
public class NotesListAdapter extends CursorAdapter {
private static final String TAG = "NotesListAdapter";
private Context mContext;
private HashMap<Integer, Boolean> mSelectedIndex;
private int mNotesCount;//便签数
private boolean mChoiceMode;//选择模式标记
/*
桌面widget的属性，包括编号和类型
*/
public static class AppWidgetAttribute {
public int widgetId;
public int widgetType;
};
/*
函数功能：初始化便签链接器（根据传进来的内容设置相关变量）
*/
public NotesListAdapter(Context context) {
super(context, null);//父类对象置空
mSelectedIndex = new HashMap<Integer, Boolean>();//新建选项下标的hash表
mContext = context;
mNotesCount = 0;
}
@Override
/*
函数功能：新建一个视图来存储光标所指向的数据（使用兄弟类NotesListItem新建一个项目选项）
*/
public View newView(Context context, Cursor cursor, ViewGroup parent) {
return new NotesListItem(context);
}
/*
函数功能：将已经存在的视图和鼠标指向的数据进行捆绑
*/
@Override
public void bindView(View view, Context context, Cursor cursor) {
if (view instanceof NotesListItem) {//若view是NotesListItem的一个实例
NoteItemData itemData = new NoteItemData(context, cursor);
((NotesListItem) view).bind(context, itemData, mChoiceMode,
isSelectedItem(cursor.getPosition()));
//则新建一个项目选项并且用bind跟将view和鼠标、内容、便签数据捆绑在一起
}
}
/*
函数功能：设置勾选框
*/
public void setCheckedItem(final int position, final boolean checked) {
mSelectedIndex.put(position, checked);//根据定位和是否勾选设置下标
notifyDataSetChanged();//在修改后刷新activity
}
/*
函数功能：判断单选按钮是否勾选
*/
public boolean isInChoiceMode() {
return mChoiceMode;
}
/*
函数功能：设置单项选项框（重置下标并且根据参数mode设置选项）
*/
public void setChoiceMode(boolean mode) {
mSelectedIndex.clear();
mChoiceMode = mode;
}
/*
函数功能：选择全部选项
*/
public void selectAll(boolean checked) {
Cursor cursor = getCursor();//获取光标位置
for (int i = 0; i < getCount(); i++) {
if (cursor.moveToPosition(i)) {
if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) {
setCheckedItem(i, checked);
}
}
}
//遍历所有光标可用的位置在判断为便签类型之后勾选单项框
}
/*
建立选择项的下标列表
*/
public HashSet<Long> getSelectedItemIds() {
HashSet<Long> itemSet = new HashSet<Long>();//建立hash表
for (Integer position : mSelectedIndex.keySet()) {//遍历所有的关键
if (mSelectedIndex.get(position) == true) {//若光标位置可用
Long id = getItemId(position);
if (id == Notes.ID_ROOT_FOLDER) {
Log.d(TAG, "Wrong item id, should not happen");//原文件不需要添加
} else {
itemSet.add(id);
}
//则将id下标加入选项集合中
}
}
return itemSet;
}
/*
函数功能：建立桌面widget的选项表
*/
public HashSet<AppWidgetAttribute> getSelectedWidget() {
HashSet<AppWidgetAttribute> itemSet = new HashSet<AppWidgetAttribute>();
for (Integer position : mSelectedIndex.keySet()) {
if (mSelectedIndex.get(position) == true) {
Cursor c = (Cursor) getItem(position);
//以上4句和getSelectedItemIds一样
if (c != null) {//若光标位置可用就建立新的widget属性并编辑下表和类型，最后添加到选项集中
AppWidgetAttribute widget = new AppWidgetAttribute();
NoteItemData item = new NoteItemData(mContext, c);
widget.widgetId = item.getWidgetId();
widget.widgetType = item.getWidgetType();
itemSet.add(widget);
/**
* Don't close cursor here, only the adapter could close it
*/
} else {
Log.e(TAG, "Invalid cursor");
return null;
}
}
}
return itemSet;
}
/*
函数功能：获取选项个数
*/
public int getSelectedCount() {
Collection<Boolean> values = mSelectedIndex.values();//首先获取选项下标的值
if (null == values) {
return 0;
}
Iterator<Boolean> iter = values.iterator();//初始化叠加器
int count = 0;
while (iter.hasNext()) {
if (true == iter.next()) {
//若value值为真，计数+1
count++;
}
}
return count;
}
/*
函数功能：判断是否全部选中
*/
public boolean isAllSelected() {
int checkedCount = getSelectedCount();
return (checkedCount != 0 && checkedCount == mNotesCount);
//获取选项数看是否等于便签的个数
}
/*
函数功能：判断是否为选项表（通过传递的下标来确定）
*/
public boolean isSelectedItem(final int position) {
if (null == mSelectedIndex.get(position)) {
return false;
}
return mSelectedIndex.get(position);
}
@Override
/*
函数功能：在activity内容发生局部变动的时候回调该函数计算便签的数量
*/
protected void onContentChanged() {
super.onContentChanged();
//执行基类函数
calcNotesCount();
}
@Override
/*
函数功能：在activity光标发生局部变动的时候回调该函数计算便签的数量
*/
public void changeCursor(Cursor cursor) {
super.changeCursor(cursor);
//执行基类函数
calcNotesCount();
}
/*
函数功能：计算便签数量
*/
private void calcNotesCount() {
mNotesCount = 0;
for (int i = 0; i < getCount(); i++) {//获取总数同时遍历
Cursor c = (Cursor) getItem(i);
if (c != null) {
if (NoteItemData.getNoteType(c) == Notes.TYPE_NOTE) {
mNotesCount++;
//若该位置不为空并且文本类型为便签就+1
}
} else {
Log.e(TAG, "Invalid cursor");
return;
}
//否则报错
}
}
}

134
NotesListItem.java
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@ -1,134 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import android.content.Context;
import android.text.format.DateUtils;
import android.view.View;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.tool.DataUtils;
import net.micode.notes.tool.ResourceParser.NoteItemBgResources;
//创建便签列表项目选项
public class NotesListItem extends LinearLayout {
private ImageView mAlert;//闹钟图片
private TextView mTitle;//标题
private TextView mTime;//时间
private TextView mCallName;//名称
private NoteItemData mItemData;//标签数据
private CheckBox mCheckBox;打勾框
/*
初始化基本信息
*/
public NotesListItem(Context context) {
super(context);//调整调用父类构造函数的顺序
inflate(context, R.layout.note_item, this);//将一个xml中定义的布局控件找出来，这里的xml是R.layout
//findViewById用于从contentView中查找指定ID的View，转换出来的形式根据需要而定
mAlert = (ImageView) findViewById(R.id.iv_alert_icon);
mTitle = (TextView) findViewById(R.id.tv_title);
mTime = (TextView) findViewById(R.id.tv_time);
mCallName = (TextView) findViewById(R.id.tv_name);
mCheckBox = (CheckBox) findViewById(android.R.id.checkbox);
}
//根据data的属性对各个控件的属性的控制，主要是可见性Visibility，内容setText，格式setTextAppearance
public void bind(Context context, NoteItemData data, boolean choiceMode, boolean checked) {
if (choiceMode && data.getType() == Notes.TYPE_NOTE) {
mCheckBox.setVisibility(View.VISIBLE);//设置可见行为可见
mCheckBox.setChecked(checked);//格子打勾
} else {
mCheckBox.setVisibility(View.GONE);
}
mItemData = data;
//设置控件属性，共三种情况，由data的id和父id是否与保存到文件夹的id一致来决定
if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
mCallName.setVisibility(View.GONE);
mAlert.setVisibility(View.VISIBLE);
//设置该textview的style
mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
//settext为设置内容
mTitle.setText(context.getString(R.string.call_record_folder_name)
+ context.getString(R.string.format_folder_files_count, data.getNotesCount()));
mAlert.setImageResource(R.drawable.call_record);
} else if (data.getParentId() == Notes.ID_CALL_RECORD_FOLDER) {
mCallName.setVisibility(View.VISIBLE);
mCallName.setText(data.getCallName());
mTitle.setTextAppearance(context,R.style.TextAppearanceSecondaryItem);
mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
//关于闹钟的设置
if (data.hasAlert()) {
mAlert.setImageResource(R.drawable.clock);//图片来源的设置
mAlert.setVisibility(View.VISIBLE);
} else {
mAlert.setVisibility(View.GONE);
}
} else {
mCallName.setVisibility(View.GONE);
mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
//设置title格式
if (data.getType() == Notes.TYPE_FOLDER) {
mTitle.setText(data.getSnippet()
+ context.getString(R.string.format_folder_files_count,
data.getNotesCount()));
mAlert.setVisibility(View.GONE);
} else {
mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
if (data.hasAlert()) {
mAlert.setImageResource(R.drawable.clock);//设置图片来源
mAlert.setVisibility(View.VISIBLE);
} else {
mAlert.setVisibility(View.GONE);
}
}
}
//设置内容，获取相关时间，从data里编辑的日期中获取
mTime.setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate()));
setBackground(data);
}
//根据data的文件属性来设置背景
private void setBackground(NoteItemData data) {
int id = data.getBgColorId();
//若是note型文件，则有4种情况，对于这4中不同情况的背景来源
if (data.getType() == Notes.TYPE_NOTE) {
//单个数据并且只有一个子文件夹
if (data.isSingle() || data.isOneFollowingFolder()) {
setBackgroundResource(NoteItemBgResources.getNoteBgSingleRes(id));
} else if (data.isLast()) {//是最后一个数据
setBackgroundResource(NoteItemBgResources.getNoteBgLastRes(id));
} else if (data.isFirst() || data.isMultiFollowingFolder()) {//是一个数据并由多个子文件夹
setBackgroundResource(NoteItemBgResources.getNoteBgFirstRes(id));
} else {
setBackgroundResource(NoteItemBgResources.getNoteBgNormalRes(id));
}
} else {
//若不是note直接调用文件夹的背景来源
setBackgroundResource(NoteItemBgResources.getFolderBgRes());
}
}
public NoteItemData getItemData() {
return mItemData;
}
}

458
NotesPreferenceActivity.java
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@ -1,458 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.ui;
import android.accounts.Account;
import android.accounts.AccountManager;
import android.app.ActionBar;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.Preference.OnPreferenceClickListener;
import android.preference.PreferenceActivity;
import android.preference.PreferenceCategory;
import android.text.TextUtils;
import android.text.format.DateFormat;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.gtask.remote.GTaskSyncService;
/*
此类功能为，在小米便签中实现对背景颜色和字体大小的数据储存，继承了
PreferenceActivity主要功能为对系统信息和配置进行自动保存的Activity。
*/
public class NotesPreferenceActivity extends PreferenceActivity {
public static final String PREFERENCE_NAME = "notes_preferences";//优先名
public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";//同步账号
public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";同步时间
public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";
private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";//同步密码
private static final String AUTHORITIES_FILTER_KEY = "authorities";//本地密码
private PreferenceCategory mAccountCategory;//账户分组
private GTaskReceiver mReceiver;//同步任务接收器
private Account[] mOriAccounts;//账户
private boolean mHasAddedAccount;账户的hash标记
@Override
/*
函数功能：创建一个activity，在函数里要完成所有的正常静态设置。
参数：Bundle icicle存放了activity当前的状态。
*/
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);//先执行父类的创建函数
/* using the app icon for navigation */
getActionBar().setDisplayHomeAsUpEnabled(true);//给左上角图标的左边加上一个返回的图标
addPreferencesFromResource(R.xml.preferences);//添加xml来源并显示xml
mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);//根据同步账户关键码来初始化分组
mReceiver = new GTaskReceiver();
IntentFilter filter = new IntentFilter();
filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME);
registerReceiver(mReceiver, filter);
//初始化同步组件
mOriAccounts = null;//mOriAccounts赋值为null
View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);//获取listview，ListView用于列出所有选择
getListView().addHeaderView(header, null, true);//在listview组件上方添加其他组件
}
@Override
/*
函数功能：activity交互功能的实现，用于接受用户的输入
*/
protected void onResume() {
super.onResume();//先执行父类的交互实现
// need to set sync account automatically if user has added a new
// account
if (mHasAddedAccount) {//若用户新加了账户则自动设置同步账户
Account[] accounts = getGoogleAccounts();//获取google同步账户
if (mOriAccounts != null && accounts.length > mOriAccounts.length) {//若原账户不为空且当前账户有增加
for (Account accountNew : accounts) {
boolean found = false;
for (Account accountOld : mOriAccounts) {
if (TextUtils.equals(accountOld.name, accountNew.name)) {
//更新账户
found = true;
break;
}
}
if (!found) {
setSyncAccount(accountNew.name);//若是没有找到旧的账户，那么同步账号中就只添加新账户
break;
}
}
}
}
refreshUI();//刷新标签页面
}
@Override
/*
函数功能：销毁一个activity
*/
protected void onDestroy() {
if (mReceiver != null) {//如果mReceiver不为空
unregisterReceiver(mReceiver);//注销接收器
}
super.onDestroy();//执行父类的销毁动作
}
/*
函数功能：重新设置账户信息
*/
private void loadAccountPreference() {
mAccountCategory.removeAll();//销毁所有的分组
Preference accountPref = new Preference(this);//建立首选项
final String defaultAccount = getSyncAccountName(this);
accountPref.setTitle(getString(R.string.preferences_account_title));
accountPref.setSummary(getString(R.string.preferences_account_summary));
//设置首选项的大标题和小标题
accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
public boolean onPreferenceClick(Preference preference) {//建立监听器
if (!GTaskSyncService.isSyncing()) {
if (TextUtils.isEmpty(defaultAccount)) {//若是第一次建立账户显示选择账户提示对话框
// the first time to set account
showSelectAccountAlertDialog();
} else {
//若是已经建立则显示修改对话框并进行修改操作
// if the account has already been set, we need to promp
// user about the risk
showChangeAccountConfirmAlertDialog();
}
} else {
//若在没有同步的情况下，则在toast中显示不能修改
Toast.makeText(NotesPreferenceActivity.this,
R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT)
.show();
}
return true;
}
});
//根据新建首选项编辑新的账户分组
mAccountCategory.addPreference(accountPref);
}
/*
函数功能：设置按键的状态和最后同步的时间
*/
private void loadSyncButton() {
Button syncButton = (Button) findViewById(R.id.preference_sync_button);
TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
//获取同步按钮控件和最终同步时间的窗口
// set button state
//设置按钮的状态
if (GTaskSyncService.isSyncing()) {//若是在同步状态下
syncButton.setText(getString(R.string.preferences_button_sync_cancel));
syncButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
GTaskSyncService.cancelSync(NotesPreferenceActivity.this);
}
});
//设置按钮显示的文本为“取消同步”以及监听器
} else {//若是不同步则设置按钮显示的文本为“立即同步”以及对应监听器
syncButton.setText(getString(R.string.preferences_button_sync_immediately));
syncButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
GTaskSyncService.startSync(NotesPreferenceActivity.this);
}
});
}
syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));//设置按键可用还是不可用
// set last sync time
//设置最终同步时间
if (GTaskSyncService.isSyncing()) {//若是再同步情况下
lastSyncTimeView.setText(GTaskSyncService.getProgressString());
lastSyncTimeView.setVisibility(View.VISIBLE);
//根据当前同步服务器设置时间显示框的文本以及可见性
} else {//若是非同步情况
long lastSyncTime = getLastSyncTime(this);
if (lastSyncTime != 0) {
lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time,
DateFormat.format(getString(R.string.preferences_last_sync_time_format),
lastSyncTime)));
lastSyncTimeView.setVisibility(View.VISIBLE);
//则根据最后同步数据的信息来编辑时间显示框的文本内容和可见性
} else {//若时间为空直接设置为不可见状态
lastSyncTimeView.setVisibility(View.GONE);
}
}
}
/*
函数功能：刷新标签界面（调用上文设置账号和设置按键两个函数来实现）
*/
private void refreshUI() {
loadAccountPreference();
loadSyncButton();
}
/*
函数功能：显示账户选择的对话框并进行账户的设置
*/
private void showSelectAccountAlertDialog() {
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);//创建一个新的对话框
View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
titleTextView.setText(getString(R.string.preferences_dialog_select_account_title));
TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips));
//设置标题以及子标题的内容
dialogBuilder.setCustomTitle(titleView);
dialogBuilder.setPositiveButton(null, null);
//设置对话框的自定义标题，建立一个YES的按钮
Account[] accounts = getGoogleAccounts();
String defAccount = getSyncAccountName(this);
//获取同步账户信息
mOriAccounts = accounts;
mHasAddedAccount = false;
if (accounts.length > 0) {//若账户不为空
CharSequence[] items = new CharSequence[accounts.length];
final CharSequence[] itemMapping = items;
int checkedItem = -1;
int index = 0;
for (Account account : accounts) {
if (TextUtils.equals(account.name, defAccount)) {
checkedItem = index;
//在账户列表中查询到所需账户
}
items[index++] = account.name;
}
dialogBuilder.setSingleChoiceItems(items, checkedItem,//在对话框建立一个单选的复选框
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
setSyncAccount(itemMapping[which].toString());
dialog.dismiss();//取消对话框
refreshUI();
}
//设置点击后执行的事件，包括检录新同步账户和刷新标签界面
});
//建立对话框网络版的监听器
}
View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);
dialogBuilder.setView(addAccountView);
//给新加账户对话框设置自定义样式
final AlertDialog dialog = dialogBuilder.show();//显示对话框
addAccountView.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
mHasAddedAccount = true;//将新加账户的hash置true
Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");//建立网络建立组件
intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] {
"gmail-ls"
});
startActivityForResult(intent, -1);
//跳回上一个选项
dialog.dismiss();
}
});
//建立新加账户对话框的监听器
}
/*
函数功能：显示账户选择对话框和相关账户操作
*/
private void showChangeAccountConfirmAlertDialog() {
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);//创建一个新的对话框
View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
titleTextView.setText(getString(R.string.preferences_dialog_change_account_title,
getSyncAccountName(this)));
TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg));
//根据同步修改的账户信息设置标题以及子标题的内容
dialogBuilder.setCustomTitle(titleView);//设置对话框的自定义标题
CharSequence[] menuItemArray = new CharSequence[] {
getString(R.string.preferences_menu_change_account),
getString(R.string.preferences_menu_remove_account),
getString(R.string.preferences_menu_cancel)
};//定义一些标记字符串
dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() {//设置对话框要显示的一个list,用于显示几个命令时，即change，remove，cancel
public void onClick(DialogInterface dialog, int which) {//按键功能由which来决定
if (which == 0) {
//进入账户选择对话框
showSelectAccountAlertDialog();
} else if (which == 1) {
//删除账户且更新便签界面
removeSyncAccount();
refreshUI();
}
}
});
dialogBuilder.show();//显示对话框
}
/*
函数功能：获取谷歌账户（通过账户管理器直接获取）
*/
private Account[] getGoogleAccounts() {
AccountManager accountManager = AccountManager.get(this);
return accountManager.getAccountsByType("com.google");
}
/*
函数功能：设置同步账户
*/
private void setSyncAccount(String account) {
if (!getSyncAccountName(this).equals(account)) {//假如该账号不在同步账号列表中
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
//编辑共享的首选项
if (account != null) {
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account);
} else {
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
}
//将该帐号加入到首选项中
editor.commit();//提交修改的数据
// clean up last sync time
setLastSyncTime(this, 0);//将最后同步时间请零
// clean up local gtask related info
new Thread(new Runnable() {
public void run() {
ContentValues values = new ContentValues();
values.put(NoteColumns.GTASK_ID, "");
values.put(NoteColumns.SYNC_ID, 0);
getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
}
}).start();
//重置当地同步任务的信息
Toast.makeText(NotesPreferenceActivity.this,
getString(R.string.preferences_toast_success_set_accout, account),
Toast.LENGTH_SHORT).show();
//将toast的文本信息置为“设置账户成功”并显示出来
}
}
/*
函数功能：删除同步账户
*/
private void removeSyncAccount() {
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
//设置共享首选项
if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) {//若当前首选项中有账户就删除
editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME);
}
if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) {
editor.remove(PREFERENCE_LAST_SYNC_TIME);//删除当前首选项中有账户时间
}
editor.commit();//提交更新后的数据
// clean up local gtask related info
new Thread(new Runnable() {
public void run() {
ContentValues values = new ContentValues();
values.put(NoteColumns.GTASK_ID, "");
values.put(NoteColumns.SYNC_ID, 0);
getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
}
}).start();
//重置当地同步任务的信息
}
/*
函数功能：获取同步账户名称（通过共享的首选项里的信息直接获取）
*/
public static String getSyncAccountName(Context context) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
}
/*
函数功能：设置最终同步时间
*/
public static void setLastSyncTime(Context context, long time) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
//从共享首选项中找到相关账户并获取其编辑器
editor.putLong(PREFERENCE_LAST_SYNC_TIME, time);
editor.commit();
//编辑最终同步时间并提交更新
}
/*
函数功能：获取最终同步时间（通过共享的首选项里的信息直接获取）
*/
public static long getLastSyncTime(Context context) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0);
}
/*
函数功能：接受同步信息（继承BroadcastReceiver）
*/
private class GTaskReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
refreshUI();
if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {
//获取随广播而来的Internet中的同步服务的数据
TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
syncStatus.setText(intent
.getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
//通过获取的数据设置系统的状态
}
}
}
/*
函数功能：处理菜单的选项
参数：MenuItem菜单选项
*/
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {//根据选项的id选择，这里只有一个主页
case android.R.id.home:
Intent intent = new Intent(this, NotesListActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
return true;
//在主页情况下创建连接组件intent，发出清空的信号并开始一个相应的activity
default:
return false;
}
}
}

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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.data;
import android.app.SearchManager;
import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Intent;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.net.Uri;
import android.text.TextUtils;
import android.util.Log;
import net.micode.notes.R;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.data.NotesDatabaseHelper.TABLE;
/**
* 为存储和获取数据提供接口，可以在不同的应用程序之间共享数据
* ContentProvider提供的方法
* query：查询
* insert：插入
* update：更新
* delete：删除
* getType：得到数据类型
*/
public class NotesProvider extends ContentProvider {
//UriMatcher用于匹配Uri
private static final UriMatcher mMatcher;
private NotesDatabaseHelper mHelper;
private static final String TAG = "NotesProvider";
private static final int URI_NOTE = 1;
private static final int URI_NOTE_ITEM = 2;
private static final int URI_DATA = 3;
private static final int URI_DATA_ITEM = 4;
private static final int URI_SEARCH = 5;
private static final int URI_SEARCH_SUGGEST = 6;
static {
//创建UriMatcher时，调用UriMatcher(UriMatcher.NO_MATCH)表示不匹配任何路径的返回码
mMatcher = new UriMatcher(UriMatcher.NO_MATCH);
//把需要匹配Uri路径全部给注册上
mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE);
mMatcher.addURI(Notes.AUTHORITY, "note/#", URI_NOTE_ITEM);
mMatcher.addURI(Notes.AUTHORITY, "data", URI_DATA);
mMatcher.addURI(Notes.AUTHORITY, "data/#", URI_DATA_ITEM);
mMatcher.addURI(Notes.AUTHORITY, "search", URI_SEARCH);
mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY, URI_SEARCH_SUGGEST);
mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY + "/*", URI_SEARCH_SUGGEST);
}
/**
* x'0A' represents the '\n' character in sqlite. For title and content in the search result,
* we will trim '\n' and white space in order to show more information.
*/
//声明NOTES_SEARCH_PROJECTION
private static final String NOTES_SEARCH_PROJECTION = NoteColumns.ID + ","
+ NoteColumns.ID + " AS " + SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA + ","
+ "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_1 + ","
+ "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_2 + ","
+ R.drawable.search_result + " AS " + SearchManager.SUGGEST_COLUMN_ICON_1 + ","
+ "'" + Intent.ACTION_VIEW + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_ACTION + ","
+ "'" + Notes.TextNote.CONTENT_TYPE + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA;
//声明NOTES_SNIPPET_SEARCH_QUERY
private static String NOTES_SNIPPET_SEARCH_QUERY = "SELECT " + NOTES_SEARCH_PROJECTION
+ " FROM " + TABLE.NOTE
+ " WHERE " + NoteColumns.SNIPPET + " LIKE ?"
+ " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER
+ " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE;
@Override
//Context只有在onCreate()中才被初始化
//对mHelper进行实例化
public boolean onCreate() {
mHelper = NotesDatabaseHelper.getInstance(getContext());
return true;
}
@Override
//查询uri在数据库中对应的位置
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
String sortOrder) {
Cursor c = null;
//获取可读数据库
SQLiteDatabase db = mHelper.getReadableDatabase();
String id = null;
//匹配查找uri
switch (mMatcher.match(uri)) {
//对于不同的匹配值，在数据库中查找相应的条目
case URI_NOTE:
c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null,
sortOrder);
break;
case URI_NOTE_ITEM:
id = uri.getPathSegments().get(1);
c = db.query(TABLE.NOTE, projection, NoteColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs, null, null, sortOrder);
break;
case URI_DATA:
c = db.query(TABLE.DATA, projection, selection, selectionArgs, null, null,
sortOrder);
break;
case URI_DATA_ITEM:
id = uri.getPathSegments().get(1);
c = db.query(TABLE.DATA, projection, DataColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs, null, null, sortOrder);
break;
case URI_SEARCH:
case URI_SEARCH_SUGGEST:
if (sortOrder != null || projection != null) {
//不合法的参数异常
throw new IllegalArgumentException(
"do not specify sortOrder, selection, selectionArgs, or projection" + "with this query");
}
String searchString = null;
if (mMatcher.match(uri) == URI_SEARCH_SUGGEST) {
if (uri.getPathSegments().size() > 1) {
//getPathSegments()方法得到一个String的List，
//在uri.getPathSegments().get(1)为第2个元素
searchString = uri.getPathSegments().get(1);
}
} else {
searchString = uri.getQueryParameter("pattern");
}
if (TextUtils.isEmpty(searchString)) {
return null;
}
try {
searchString = String.format("%%%s%%", searchString);
c = db.rawQuery(NOTES_SNIPPET_SEARCH_QUERY,
new String[] { searchString });
} catch (IllegalStateException ex) {
Log.e(TAG, "got exception: " + ex.toString());
}
break;
default:
//抛出异常
throw new IllegalArgumentException("Unknown URI " + uri);
}
if (c != null) {
c.setNotificationUri(getContext().getContentResolver(), uri);
}
return c;
}
@Override
//插入一个uri
public Uri insert(Uri uri, ContentValues values) {
//获得可写的数据库
SQLiteDatabase db = mHelper.getWritableDatabase();
long dataId = 0, noteId = 0, insertedId = 0;
switch (mMatcher.match(uri)) {
//新增一个条目
case URI_NOTE:
insertedId = noteId = db.insert(TABLE.NOTE, null, values);
break;
//如果存在，查找NOTE_ID
case URI_DATA:
if (values.containsKey(DataColumns.NOTE_ID)) {
noteId = values.getAsLong(DataColumns.NOTE_ID);
} else {
Log.d(TAG, "Wrong data format without note id:" + values.toString());
}
insertedId = dataId = db.insert(TABLE.DATA, null, values);
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
// Notify the note uri
//notifyChange获得一个getContentResolver对象并且更新里面的内容
if (noteId > 0) {
getContext().getContentResolver().notifyChange(
ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null);
}
// Notify the data uri
if (dataId > 0) {
getContext().getContentResolver().notifyChange(
ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null);
}
////返回插入的uri的路径
return ContentUris.withAppendedId(uri, insertedId);
}
@Override
//删除一个uri
public int delete(Uri uri, String selection, String[] selectionArgs) {
//uri代表要操作的数据，Android上可用的每种资源，包括图像、视频片段、音频资源等都可以用uri来表示
int count = 0;
String id = null;
//获得可写的数据库
SQLiteDatabase db = mHelper.getWritableDatabase();
boolean deleteData = false;
switch (mMatcher.match(uri)) {
case URI_NOTE:
selection = "(" + selection + ") AND " + NoteColumns.ID + ">0 ";
count = db.delete(TABLE.NOTE, selection, selectionArgs);
break;
case URI_NOTE_ITEM:
id = uri.getPathSegments().get(1);
/**
* ID that smaller than 0 is system folder which is not allowed to
* trash
*/
long noteId = Long.valueOf(id);
if (noteId <= 0) {
break;
}
count = db.delete(TABLE.NOTE,
NoteColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
break;
case URI_DATA:
count = db.delete(TABLE.DATA, selection, selectionArgs);
deleteData = true;
break;
case URI_DATA_ITEM:
id = uri.getPathSegments().get(1);
count = db.delete(TABLE.DATA,
DataColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
deleteData = true;
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
if (count > 0) {
if (deleteData) {
getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null);
}
getContext().getContentResolver().notifyChange(uri, null);
}
return count;
}
@Override
//更新一个uri
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
int count = 0;
String id = null;
SQLiteDatabase db = mHelper.getWritableDatabase();
boolean updateData = false;
switch (mMatcher.match(uri)) {
case URI_NOTE:
increaseNoteVersion(-1, selection, selectionArgs);
count = db.update(TABLE.NOTE, values, selection, selectionArgs);
break;
case URI_NOTE_ITEM:
id = uri.getPathSegments().get(1);
increaseNoteVersion(Long.valueOf(id), selection, selectionArgs);
count = db.update(TABLE.NOTE, values, NoteColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs);
break;
case URI_DATA:
count = db.update(TABLE.DATA, values, selection, selectionArgs);
updateData = true;
break;
case URI_DATA_ITEM:
id = uri.getPathSegments().get(1);
count = db.update(TABLE.DATA, values, DataColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs);
updateData = true;
break;
default:
throw new IllegalArgumentException("Unknown URI " + uri);
}
if (count > 0) {
if (updateData) {
getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null);
}
getContext().getContentResolver().notifyChange(uri, null);
}
return count;
}
//将字符串解析成规定格式
private String parseSelection(String selection) {
return (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : "");
}
//增加一个NoteVersion
private void increaseNoteVersion(long id, String selection, String[] selectionArgs) {
StringBuilder sql = new StringBuilder(120);
sql.append("UPDATE ");
sql.append(TABLE.NOTE);
sql.append(" SET ");
sql.append(NoteColumns.VERSION);
sql.append("=" + NoteColumns.VERSION + "+1 ");
if (id > 0 || !TextUtils.isEmpty(selection)) {
sql.append(" WHERE ");
}
if (id > 0) {
sql.append(NoteColumns.ID + "=" + String.valueOf(id));
}
if (!TextUtils.isEmpty(selection)) {
String selectString = id > 0 ? parseSelection(selection) : selection;
for (String args : selectionArgs) {
selectString = selectString.replaceFirst("\\?", args);
}
sql.append(selectString);
}
//execSQL()方法可以执行insert、delete、update和CREATE TABLE之类有更改行为的SQL语句
mHelper.getWritableDatabase().execSQL(sql.toString());
}
@Override
public String getType(Uri uri) {
// TODO Auto-generated method stub
return null;
}
}

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# mim # 123

195
ResourceParser.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*简介：字面意义是资源分析器，实际上就是获取资源并且在程序中使用，比如颜色图片等
* 实现方法：主要利用R.java这个类，其中包括
* R.id 组件资源引用
* R.drawable 图片资源 （被使用）
* R.layout 布局资源
* R.menu 菜单资源
* R.String 文字资源
* R.style 主题资源 （被使用）
* 在按顺序设置好相应的id后，就可以编写简单的getXXX函数获取需要的资源
*
* 特殊的变量 ：
* @BG_DEFAULT_COLOR 默认背景颜色（黄）
* BG_DEFAULT_FONT_SIZE 默认文本大小（中）
*/
package net.micode.notes.tool;
import android.content.Context;
import android.preference.PreferenceManager;
import net.micode.notes.R;
import net.micode.notes.ui.NotesPreferenceActivity;
public class ResourceParser {
public static final int YELLOW = 0;
public static final int BLUE = 1;
public static final int WHITE = 2;
public static final int GREEN = 3;
public static final int RED = 4;
public static final int BG_DEFAULT_COLOR = YELLOW;
public static final int TEXT_SMALL = 0;
public static final int TEXT_MEDIUM = 1;
public static final int TEXT_LARGE = 2;
public static final int TEXT_SUPER = 3;
public static final int BG_DEFAULT_FONT_SIZE = TEXT_MEDIUM;
public static class NoteBgResources {
private final static int [] BG_EDIT_RESOURCES = new int [] {
R.drawable.edit_yellow,
R.drawable.edit_blue,
R.drawable.edit_white,
R.drawable.edit_green,
R.drawable.edit_red
};
private final static int [] BG_EDIT_TITLE_RESOURCES = new int [] {
R.drawable.edit_title_yellow,
R.drawable.edit_title_blue,
R.drawable.edit_title_white,
R.drawable.edit_title_green,
R.drawable.edit_title_red
};
public static int getNoteBgResource(int id) {
return BG_EDIT_RESOURCES[id];
}
public static int getNoteTitleBgResource(int id) {
return BG_EDIT_TITLE_RESOURCES[id];
}
}
//直接获取默认的背景颜色。
public static int getDefaultBgId(Context context) {
if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean(
NotesPreferenceActivity.PREFERENCE_SET_BG_COLOR_KEY, false)) {
return (int) (Math.random() * NoteBgResources.BG_EDIT_RESOURCES.length);
} else {
return BG_DEFAULT_COLOR;
}
}
public static class NoteItemBgResources {
private final static int [] BG_FIRST_RESOURCES = new int [] {
R.drawable.list_yellow_up,
R.drawable.list_blue_up,
R.drawable.list_white_up,
R.drawable.list_green_up,
R.drawable.list_red_up
};
private final static int [] BG_NORMAL_RESOURCES = new int [] {
R.drawable.list_yellow_middle,
R.drawable.list_blue_middle,
R.drawable.list_white_middle,
R.drawable.list_green_middle,
R.drawable.list_red_middle
};
private final static int [] BG_LAST_RESOURCES = new int [] {
R.drawable.list_yellow_down,
R.drawable.list_blue_down,
R.drawable.list_white_down,
R.drawable.list_green_down,
R.drawable.list_red_down,
};
private final static int [] BG_SINGLE_RESOURCES = new int [] {
R.drawable.list_yellow_single,
R.drawable.list_blue_single,
R.drawable.list_white_single,
R.drawable.list_green_single,
R.drawable.list_red_single
};
public static int getNoteBgFirstRes(int id) {
return BG_FIRST_RESOURCES[id];
}
public static int getNoteBgLastRes(int id) {
return BG_LAST_RESOURCES[id];
}
public static int getNoteBgSingleRes(int id) {
return BG_SINGLE_RESOURCES[id];
}
public static int getNoteBgNormalRes(int id) {
return BG_NORMAL_RESOURCES[id];
}
public static int getFolderBgRes() {
return R.drawable.list_folder;
}
}
public static class WidgetBgResources {
private final static int [] BG_2X_RESOURCES = new int [] {
R.drawable.widget_2x_yellow,
R.drawable.widget_2x_blue,
R.drawable.widget_2x_white,
R.drawable.widget_2x_green,
R.drawable.widget_2x_red,
};
public static int getWidget2xBgResource(int id) {
return BG_2X_RESOURCES[id];
}
private final static int [] BG_4X_RESOURCES = new int [] {
R.drawable.widget_4x_yellow,
R.drawable.widget_4x_blue,
R.drawable.widget_4x_white,
R.drawable.widget_4x_green,
R.drawable.widget_4x_red
};
public static int getWidget4xBgResource(int id) {
return BG_4X_RESOURCES[id];
}
}
public static class TextAppearanceResources {
private final static int [] TEXTAPPEARANCE_RESOURCES = new int [] {
R.style.TextAppearanceNormal,
R.style.TextAppearanceMedium,
R.style.TextAppearanceLarge,
R.style.TextAppearanceSuper
};
//这里有一个容错的函数，防止输入的id大于资源总量，若如此，则自动返回默认的设置结果
public static int getTexAppearanceResource(int id) {
/**
* HACKME: Fix bug of store the resource id in shared preference.
* The id may larger than the length of resources, in this case,
* return the {@link ResourceParser#BG_DEFAULT_FONT_SIZE}
*/
if (id >= TEXTAPPEARANCE_RESOURCES.length) {
return BG_DEFAULT_FONT_SIZE;
}
return TEXTAPPEARANCE_RESOURCES[id];
}
public static int getResourcesSize() {
return TEXTAPPEARANCE_RESOURCES.length;
}
}
}

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SqlData.java
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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**用于支持小米便签最底层的数据库相关操作，和sqlnote的关系上是子集关系，即data是note的子集（节点）
* SqlData数据中的数据
*/
package net.micode.notes.gtask.data;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.util.Log;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.DataConstants;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.data.NotesDatabaseHelper.TABLE;
import net.micode.notes.gtask.exception.ActionFailureException;
import org.json.JSONException;
import org.json.JSONObject;
public class SqlData {
/**实现功能：得到类的简写名称存入字符串TAG中（调用getSimpleName()函数） */
private static final String TAG = SqlData.class.getSimpleName();
private static final int INVALID_ID = -99999;
/**来自Notes类中定义的DataColumns中的一些常量 */
//集合了interface DataColumns中的所以SF常量
public static final String[] PROJECTION_DATA = new String[] {
DataColumns.ID, DataColumns.MIME_TYPE, DataColumns.CONTENT, DataColumns.DATA1,
DataColumns.DATA3
};
/**以下五个变量作为sql表中5列的编号 */
public static final int DATA_ID_COLUMN = 0;
public static final int DATA_MIME_TYPE_COLUMN = 1;
public static final int DATA_CONTENT_COLUMN = 2;
public static final int DATA_CONTENT_DATA_1_COLUMN = 3;
public static final int DATA_CONTENT_DATA_3_COLUMN = 4;
private ContentResolver mContentResolver;
//判断是否直接用Content生成，是为true，否则为false
private boolean mIsCreate;
private long mDataId;
private String mDataMimeType;
private String mDataContent;
private long mDataContentData1;
private String mDataContentData3;
private ContentValues mDiffDataValues;
/**实现功能：构造函数，用于初始化数据
* mContentResolver用于获取ContentProvider提供的数据
* mIsCreate表征当前数据是用哪种方式创建（两种构造函数的参数不同）
*/
public SqlData(Context context) {
mContentResolver = context.getContentResolver();
mIsCreate = true;
mDataId = INVALID_ID;//mDataId置初始值-99999
mDataMimeType = DataConstants.NOTE;
mDataContent = "";
mDataContentData1 = 0;
mDataContentData3 = "";
mDiffDataValues = new ContentValues();
}
/**实现功能：构造函数，初始化数据
* mContentResolver用于获取ContentProvider提供的数据
* mIsCreate表征当前数据是用哪种方式创建（两种构造函数的参数不同）
*/
public SqlData(Context context, Cursor c) {
mContentResolver = context.getContentResolver();
mIsCreate = false;
loadFromCursor(c);
mDiffDataValues = new ContentValues();
}
/**实现功能：从光标处加载数据
* 从当前的光标处将五列的数据加载到该类的对象
*/
private void loadFromCursor(Cursor c) {
mDataId = c.getLong(DATA_ID_COLUMN);
mDataMimeType = c.getString(DATA_MIME_TYPE_COLUMN);
mDataContent = c.getString(DATA_CONTENT_COLUMN);
mDataContentData1 = c.getLong(DATA_CONTENT_DATA_1_COLUMN);
mDataContentData3 = c.getString(DATA_CONTENT_DATA_3_COLUMN);
}
/**实现功能：设置用于共享的数据，并提供异常抛出与处理机制 */
public void setContent(JSONObject js) throws JSONException {
//如果传入的JSONObject对象中有DataColumns.ID这一项，则设置，否则设为INVALID_ID
long dataId = js.has(DataColumns.ID) ? js.getLong(DataColumns.ID) : INVALID_ID;
if (mIsCreate || mDataId != dataId) {
mDiffDataValues.put(DataColumns.ID, dataId);
}
mDataId = dataId;
String dataMimeType = js.has(DataColumns.MIME_TYPE) ? js.getString(DataColumns.MIME_TYPE)
: DataConstants.NOTE;
if (mIsCreate || !mDataMimeType.equals(dataMimeType)) {
mDiffDataValues.put(DataColumns.MIME_TYPE, dataMimeType);
}
mDataMimeType = dataMimeType;
String dataContent = js.has(DataColumns.CONTENT) ? js.getString(DataColumns.CONTENT) : "";
if (mIsCreate || !mDataContent.equals(dataContent)) {
mDiffDataValues.put(DataColumns.CONTENT, dataContent);
}
mDataContent = dataContent;
long dataContentData1 = js.has(DataColumns.DATA1) ? js.getLong(DataColumns.DATA1) : 0;
if (mIsCreate || mDataContentData1 != dataContentData1) {
mDiffDataValues.put(DataColumns.DATA1, dataContentData1);
}
mDataContentData1 = dataContentData1;
String dataContentData3 = js.has(DataColumns.DATA3) ? js.getString(DataColumns.DATA3) : "";
if (mIsCreate || !mDataContentData3.equals(dataContentData3)) {
mDiffDataValues.put(DataColumns.DATA3, dataContentData3);
}
mDataContentData3 = dataContentData3;
}
/**实现功能：获取共享的数据内容，并提供异常抛出与处理机制 */
public JSONObject getContent() throws JSONException {
if (mIsCreate) {
Log.e(TAG, "it seems that we haven't created this in database yet");
return null;
}
//创建JSONObject对象，并将相关数据放入其中，并返回
JSONObject js = new JSONObject();
js.put(DataColumns.ID, mDataId);
js.put(DataColumns.MIME_TYPE, mDataMimeType);
js.put(DataColumns.CONTENT, mDataContent);
js.put(DataColumns.DATA1, mDataContentData1);
js.put(DataColumns.DATA3, mDataContentData3);
return js;
}
/**实现功能：commit函数用于把当前造作所做的修改保存到数据库 */
public void commit(long noteId, boolean validateVersion, long version) {
if (mIsCreate) {
if (mDataId == INVALID_ID && mDiffDataValues.containsKey(DataColumns.ID)) {
mDiffDataValues.remove(DataColumns.ID);
}
mDiffDataValues.put(DataColumns.NOTE_ID, noteId);
Uri uri = mContentResolver.insert(Notes.CONTENT_DATA_URI, mDiffDataValues);
try {
mDataId = Long.valueOf(uri.getPathSegments().get(1));
} catch (NumberFormatException e) {
Log.e(TAG, "Get note id error :" + e.toString());
throw new ActionFailureException("create note failed");
}
} else {
if (mDiffDataValues.size() > 0) {
int result = 0;
if (!validateVersion) {
result = mContentResolver.update(ContentUris.withAppendedId(
Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues, null, null);
} else {
result = mContentResolver.update(ContentUris.withAppendedId(
Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues,
" ? in (SELECT " + NoteColumns.ID + " FROM " + TABLE.NOTE
+ " WHERE " + NoteColumns.VERSION + "=?)", new String[] {
String.valueOf(noteId), String.valueOf(version)
});
}
if (result == 0) {
Log.w(TAG, "there is no update. maybe user updates note when syncing");
}
}
}
mDiffDataValues.clear();
mIsCreate = false;
}
/**实现功能：获取当前id */
public long getId() {
return mDataId;
}
}

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/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**用于支持小米便签最底层的数据库相关操作，和sqldata的关系上是父集关系，即note是data的子父集
* 和sqldata相比，sqlnote算是真正意义上的数据
*/
package net.micode.notes.gtask.data;
import android.appwidget.AppWidgetManager;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.util.Log;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.gtask.exception.ActionFailureException;
import net.micode.notes.tool.GTaskStringUtils;
import net.micode.notes.tool.ResourceParser;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
public class SqlNote {
/**实现功能：得到类的简写名称，存入字符串TAG中（调用getSimpleName()函数） */
private static final String TAG = SqlNote.class.getSimpleName();
private static final int INVALID_ID = -99999;
//集合了interface、NoteColumns中所有SF常量
public static final String[] PROJECTION_NOTE = new String[] {
NoteColumns.ID, NoteColumns.ALERTED_DATE, NoteColumns.BG_COLOR_ID,
NoteColumns.CREATED_DATE, NoteColumns.HAS_ATTACHMENT, NoteColumns.MODIFIED_DATE,
NoteColumns.NOTES_COUNT, NoteColumns.PARENT_ID, NoteColumns.SNIPPET, NoteColumns.TYPE,
NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE, NoteColumns.SYNC_ID,
NoteColumns.LOCAL_MODIFIED, NoteColumns.ORIGIN_PARENT_ID, NoteColumns.GTASK_ID,
NoteColumns.VERSION
};
//以下设置17列的编号
public static final int ID_COLUMN = 0;
public static final int ALERTED_DATE_COLUMN = 1;
public static final int BG_COLOR_ID_COLUMN = 2;
public static final int CREATED_DATE_COLUMN = 3;
public static final int HAS_ATTACHMENT_COLUMN = 4;
public static final int MODIFIED_DATE_COLUMN = 5;
public static final int NOTES_COUNT_COLUMN = 6;
public static final int PARENT_ID_COLUMN = 7;
public static final int SNIPPET_COLUMN = 8;
public static final int TYPE_COLUMN = 9;
public static final int WIDGET_ID_COLUMN = 10;
public static final int WIDGET_TYPE_COLUMN = 11;
public static final int SYNC_ID_COLUMN = 12;
public static final int LOCAL_MODIFIED_COLUMN = 13;
public static final int ORIGIN_PARENT_ID_COLUMN = 14;
public static final int GTASK_ID_COLUMN = 15;
public static final int VERSION_COLUMN = 16;
//定义了17个内部的变量，其中12个可以由content中获得，5个需要初始化为0或new
private Context mContext;
private ContentResolver mContentResolver;
private boolean mIsCreate;
private long mId;
private long mAlertDate;
private int mBgColorId;
private long mCreatedDate;
private int mHasAttachment;
private long mModifiedDate;
private long mParentId;
private String mSnippet;
private int mType;
private int mWidgetId;
private int mWidgetType;
private long mOriginParent;
private long mVersion;
private ContentValues mDiffNoteValues;
private ArrayList<SqlData> mDataList;
/**实现功能：构造函数，mIsCreate用于标示构造方式 */
/**构造函数只有context，对所有的变量进行初始化 */
public SqlNote(Context context) {
mContext = context;
mContentResolver = context.getContentResolver();
mIsCreate = true;
mId = INVALID_ID;
mAlertDate = 0;
mBgColorId = ResourceParser.getDefaultBgId(context);
mCreatedDate = System.currentTimeMillis();//调用系统函数获得创建时间
mHasAttachment = 0;
mModifiedDate = System.currentTimeMillis();//最后一次修改时间初始化为创建时间
mParentId = 0;
mSnippet = "";
mType = Notes.TYPE_NOTE;
mWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;
mWidgetType = Notes.TYPE_WIDGET_INVALIDE;
mOriginParent = 0;
mVersion = 0;
mDiffNoteValues = new ContentValues();
mDataList = new ArrayList<SqlData>();
}
/**实现功能：构造函数，mIsCreate用于标示构造方式 */
//构造函数有context和一个数据库的cursor，多数变量通过cursor指向的一条记录直接进行初始化
public SqlNote(Context context, Cursor c) {
mContext = context;
mContentResolver = context.getContentResolver();
mIsCreate = false;
loadFromCursor(c);
mDataList = new ArrayList<SqlData>();
if (mType == Notes.TYPE_NOTE)
loadDataContent();
mDiffNoteValues = new ContentValues();
}
/**实现功能：构造函数，mIsCreate用于标示构造方式 */
public SqlNote(Context context, long id) {
mContext = context;
mContentResolver = context.getContentResolver();
mIsCreate = false;
loadFromCursor(id);
mDataList = new ArrayList<SqlData>();
if (mType == Notes.TYPE_NOTE)
loadDataContent();
mDiffNoteValues = new ContentValues();
}
/**实现功能：通过id从光标处加载数据 */
private void loadFromCursor(long id) {
Cursor c = null;
try {
c = mContentResolver.query(Notes.CONTENT_NOTE_URI, PROJECTION_NOTE, "(_id=?)",
new String[] {
String.valueOf(id)
}, null);//通过id获得对应的ContentResolver中的cursor
if (c != null) {
c.moveToNext();
loadFromCursor(c);//然后加载数据进行初始化这样函数
//SqlNote（Context context，long id）与SqlNote（Context context，long id）的实现方式基本相同
} else {
Log.w(TAG, "loadFromCursor: cursor = null");
}
} finally {
if (c != null)
c.close();
}
}
/**实现功能：通过游标从光标处加载数据 */
private void loadFromCursor(Cursor c) {
//直接从一条记录中的获得以下变量的初始值
mId = c.getLong(ID_COLUMN);
mAlertDate = c.getLong(ALERTED_DATE_COLUMN);
mBgColorId = c.getInt(BG_COLOR_ID_COLUMN);
mCreatedDate = c.getLong(CREATED_DATE_COLUMN);
mHasAttachment = c.getInt(HAS_ATTACHMENT_COLUMN);
mModifiedDate = c.getLong(MODIFIED_DATE_COLUMN);
mParentId = c.getLong(PARENT_ID_COLUMN);
mSnippet = c.getString(SNIPPET_COLUMN);
mType = c.getInt(TYPE_COLUMN);
mWidgetId = c.getInt(WIDGET_ID_COLUMN);
mWidgetType = c.getInt(WIDGET_TYPE_COLUMN);
mVersion = c.getLong(VERSION_COLUMN);
}
/**实现功能：通过content机制获取共享数据并加载到数据库当前游标处 */
private void loadDataContent() {
Cursor c = null;
mDataList.clear();
try {
c = mContentResolver.query(Notes.CONTENT_DATA_URI, SqlData.PROJECTION_DATA,
"(note_id=?)", new String[] {
String.valueOf(mId)
}, null);
if (c != null) {
if (c.getCount() == 0) {
Log.w(TAG, "it seems that the note has not data");
return;
}
while (c.moveToNext()) {
SqlData data = new SqlData(mContext, c);
mDataList.add(data);
}
} else {
Log.w(TAG, "loadDataContent: cursor = null");
}
} finally {
if (c != null)
c.close();
}
}
/**实现功能：设置通过content机制用于共享的数据信息 */
public boolean setContent(JSONObject js) {
try {
JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_SYSTEM) {
Log.w(TAG, "cannot set system folder");
} else if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_FOLDER) {
// for folder we can only update the snnipet and type
String snippet = note.has(NoteColumns.SNIPPET) ? note
.getString(NoteColumns.SNIPPET) : "";
if (mIsCreate || !mSnippet.equals(snippet)) {
mDiffNoteValues.put(NoteColumns.SNIPPET, snippet);
}
mSnippet = snippet;
int type = note.has(NoteColumns.TYPE) ? note.getInt(NoteColumns.TYPE)
: Notes.TYPE_NOTE;
if (mIsCreate || mType != type) {
mDiffNoteValues.put(NoteColumns.TYPE, type);
}
mType = type;
} else if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_NOTE) {
JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
long id = note.has(NoteColumns.ID) ? note.getLong(NoteColumns.ID) : INVALID_ID;
if (mIsCreate || mId != id) {
mDiffNoteValues.put(NoteColumns.ID, id);
}
mId = id;
long alertDate = note.has(NoteColumns.ALERTED_DATE) ? note
.getLong(NoteColumns.ALERTED_DATE) : 0;
if (mIsCreate || mAlertDate != alertDate) {
mDiffNoteValues.put(NoteColumns.ALERTED_DATE, alertDate);
}
mAlertDate = alertDate;
int bgColorId = note.has(NoteColumns.BG_COLOR_ID) ? note
.getInt(NoteColumns.BG_COLOR_ID) : ResourceParser.getDefaultBgId(mContext);
if (mIsCreate || mBgColorId != bgColorId) {
mDiffNoteValues.put(NoteColumns.BG_COLOR_ID, bgColorId);
}
mBgColorId = bgColorId;
long createDate = note.has(NoteColumns.CREATED_DATE) ? note
.getLong(NoteColumns.CREATED_DATE) : System.currentTimeMillis();
if (mIsCreate || mCreatedDate != createDate) {
mDiffNoteValues.put(NoteColumns.CREATED_DATE, createDate);
}
mCreatedDate = createDate;
int hasAttachment = note.has(NoteColumns.HAS_ATTACHMENT) ? note
.getInt(NoteColumns.HAS_ATTACHMENT) : 0;
if (mIsCreate || mHasAttachment != hasAttachment) {
mDiffNoteValues.put(NoteColumns.HAS_ATTACHMENT, hasAttachment);
}
mHasAttachment = hasAttachment;
long modifiedDate = note.has(NoteColumns.MODIFIED_DATE) ? note
.getLong(NoteColumns.MODIFIED_DATE) : System.currentTimeMillis();
if (mIsCreate || mModifiedDate != modifiedDate) {
mDiffNoteValues.put(NoteColumns.MODIFIED_DATE, modifiedDate);
}
mModifiedDate = modifiedDate;
long parentId = note.has(NoteColumns.PARENT_ID) ? note
.getLong(NoteColumns.PARENT_ID) : 0;
if (mIsCreate || mParentId != parentId) {
mDiffNoteValues.put(NoteColumns.PARENT_ID, parentId);
}
mParentId = parentId;
String snippet = note.has(NoteColumns.SNIPPET) ? note
.getString(NoteColumns.SNIPPET) : "";
if (mIsCreate || !mSnippet.equals(snippet)) {
mDiffNoteValues.put(NoteColumns.SNIPPET, snippet);
}
mSnippet = snippet;
int type = note.has(NoteColumns.TYPE) ? note.getInt(NoteColumns.TYPE)
: Notes.TYPE_NOTE;
if (mIsCreate || mType != type) {
mDiffNoteValues.put(NoteColumns.TYPE, type);
}
mType = type;
int widgetId = note.has(NoteColumns.WIDGET_ID) ? note.getInt(NoteColumns.WIDGET_ID)
: AppWidgetManager.INVALID_APPWIDGET_ID;
if (mIsCreate || mWidgetId != widgetId) {
mDiffNoteValues.put(NoteColumns.WIDGET_ID, widgetId);
}
mWidgetId = widgetId;
int widgetType = note.has(NoteColumns.WIDGET_TYPE) ? note
.getInt(NoteColumns.WIDGET_TYPE) : Notes.TYPE_WIDGET_INVALIDE;
if (mIsCreate || mWidgetType != widgetType) {
mDiffNoteValues.put(NoteColumns.WIDGET_TYPE, widgetType);
}
mWidgetType = widgetType;
long originParent = note.has(NoteColumns.ORIGIN_PARENT_ID) ? note
.getLong(NoteColumns.ORIGIN_PARENT_ID) : 0;
if (mIsCreate || mOriginParent != originParent) {
mDiffNoteValues.put(NoteColumns.ORIGIN_PARENT_ID, originParent);
}
mOriginParent = originParent;
for (int i = 0; i < dataArray.length(); i++) {
JSONObject data = dataArray.getJSONObject(i);
SqlData sqlData = null;
if (data.has(DataColumns.ID)) {
long dataId = data.getLong(DataColumns.ID);
for (SqlData temp : mDataList) {
if (dataId == temp.getId()) {
sqlData = temp;
}
}
}
if (sqlData == null) {
sqlData = new SqlData(mContext);
mDataList.add(sqlData);
}
sqlData.setContent(data);
}
}
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
return false;
}
return true;
}
/**实现功能：获取content机制提供的数据并加载到note中 */
public JSONObject getContent() {
try {
JSONObject js = new JSONObject();
if (mIsCreate) {
Log.e(TAG, "it seems that we haven't created this in database yet");
return null;
}
JSONObject note = new JSONObject();
if (mType == Notes.TYPE_NOTE) {//类型为note时
note.put(NoteColumns.ID, mId);
note.put(NoteColumns.ALERTED_DATE, mAlertDate);
note.put(NoteColumns.BG_COLOR_ID, mBgColorId);
note.put(NoteColumns.CREATED_DATE, mCreatedDate);
note.put(NoteColumns.HAS_ATTACHMENT, mHasAttachment);
note.put(NoteColumns.MODIFIED_DATE, mModifiedDate);
note.put(NoteColumns.PARENT_ID, mParentId);
note.put(NoteColumns.SNIPPET, mSnippet);
note.put(NoteColumns.TYPE, mType);
note.put(NoteColumns.WIDGET_ID, mWidgetId);
note.put(NoteColumns.WIDGET_TYPE, mWidgetType);
note.put(NoteColumns.ORIGIN_PARENT_ID, mOriginParent);
js.put(GTaskStringUtils.META_HEAD_NOTE, note);
JSONArray dataArray = new JSONArray();
for (SqlData sqlData : mDataList) {
JSONObject data = sqlData.getContent();
if (data != null) {
dataArray.put(data);
}
}
js.put(GTaskStringUtils.META_HEAD_DATA, dataArray);
} else if (mType == Notes.TYPE_FOLDER || mType == Notes.TYPE_SYSTEM) {//类型为文件夹或者是system时
note.put(NoteColumns.ID, mId);
note.put(NoteColumns.TYPE, mType);
note.put(NoteColumns.SNIPPET, mSnippet);
js.put(GTaskStringUtils.META_HEAD_NOTE, note);
}
return js;
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
}
return null;
}
/**实现功能：给当前id设置父id */
public void setParentId(long id) {
mParentId = id;
mDiffNoteValues.put(NoteColumns.PARENT_ID, id);
}
/**实现功能：给当前id设置GtaskId */
public void setGtaskId(String gid) {
mDiffNoteValues.put(NoteColumns.GTASK_ID, gid);
}
/**实现功能：给当前id设置同步id */
public void setSyncId(long syncId) {
mDiffNoteValues.put(NoteColumns.SYNC_ID, syncId);
}
/**实现功能：初始化本地修改，即撤销所有当前修改 */
public void resetLocalModified() {
mDiffNoteValues.put(NoteColumns.LOCAL_MODIFIED, 0);
}
/**实现功能：获得当前id */
public long getId() {
return mId;
}
/**实现功能：获得当前id的父id */
public long getParentId() {
return mParentId;
}
/**实现功能：获取小片段即用于显示的部分便签内容 */
public String getSnippet() {
return mSnippet;
}
/**实现功能：判断是否为便签类型 */
public boolean isNoteType() {
return mType == Notes.TYPE_NOTE;
}
/**实现功能：commit函数用于把当前造作所做的修改保存到数据库 */
public void commit(boolean validateVersion) {
if (mIsCreate) {
if (mId == INVALID_ID && mDiffNoteValues.containsKey(NoteColumns.ID)) {
mDiffNoteValues.remove(NoteColumns.ID);
}
Uri uri = mContentResolver.insert(Notes.CONTENT_NOTE_URI, mDiffNoteValues);
try {
mId = Long.valueOf(uri.getPathSegments().get(1));
} catch (NumberFormatException e) {
Log.e(TAG, "Get note id error :" + e.toString());
throw new ActionFailureException("create note failed");
}
if (mId == 0) {
throw new IllegalStateException("Create thread id failed");
}
if (mType == Notes.TYPE_NOTE) {
for (SqlData sqlData : mDataList) {//直接使用sqldata中的实现
sqlData.commit(mId, false, -1);
}
}
} else {
if (mId <= 0 && mId != Notes.ID_ROOT_FOLDER && mId != Notes.ID_CALL_RECORD_FOLDER) {
Log.e(TAG, "No such note");
throw new IllegalStateException("Try to update note with invalid id");
}
if (mDiffNoteValues.size() > 0) {
mVersion ++;
int result = 0;
if (!validateVersion) {//构造字符串
result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
+ NoteColumns.ID + "=?)", new String[] {
String.valueOf(mId)
});
} else {
result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
+ NoteColumns.ID + "=?) AND (" + NoteColumns.VERSION + "<=?)",
new String[] {
String.valueOf(mId), String.valueOf(mVersion)
});
}
if (result == 0) {
Log.w(TAG, "there is no update. maybe user updates note when syncing");
}
}
if (mType == Notes.TYPE_NOTE) {
for (SqlData sqlData : mDataList) {
sqlData.commit(mId, validateVersion, mVersion);
}
}
}
// refresh local info
loadFromCursor(mId);
if (mType == Notes.TYPE_NOTE)
loadDataContent();
mDiffNoteValues.clear();
mIsCreate = false;
}
}

395
Task.java
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@ -1,395 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.gtask.data;
import android.database.Cursor;
import android.text.TextUtils;
import android.util.Log;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.DataConstants;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.gtask.exception.ActionFailureException;
import net.micode.notes.tool.GTaskStringUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
public class Task extends Node {
private static final String TAG = Task.class.getSimpleName();
private boolean mCompleted;//是否完成
private String mNotes;//备注信息
private JSONObject mMetaInfo;//将在实例中存储数据的类型
private Task mPriorSibling;//对应的优先兄弟Task的指针
private TaskList mParent;//所在的任务列表的指针
public Task() {
super();
mCompleted = false;
mNotes = null;
mPriorSibling = null;//TaskList中当前Task前面的Task的指针
mParent = null;//当前Task所在的TaskList
mMetaInfo = null;
}
//获取创建操作的JSON对象
public JSONObject getCreateAction(int actionId) {
JSONObject js = new JSONObject();
try {
// action_type
// 设置action类型为创建
js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_CREATE);
// action_id
// 设置action的ID
js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
// index
// 设置任务在父任务中的索引位置
js.put(GTaskStringUtils.GTASK_JSON_INDEX, mParent.getChildTaskIndex(this));
// entity_delta
// 创建一个实体对象，用于存储任务的创建信息
JSONObject entity = new JSONObject();
// 设置任务名称
entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
// 设置任务创建者ID
entity.put(GTaskStringUtils.GTASK_JSON_CREATOR_ID, "null");
// 设置实体类型为任务
entity.put(GTaskStringUtils.GTASK_JSON_ENTITY_TYPE,
GTaskStringUtils.GTASK_JSON_TYPE_TASK);
if (getNotes() != null) {
// 设置任务备注
entity.put(GTaskStringUtils.GTASK_JSON_NOTES, getNotes());
}
// 将实体对象添加到JSON对象中
js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
// parent_id
// 设置父任务的ID
js.put(GTaskStringUtils.GTASK_JSON_PARENT_ID, mParent.getGid());
// dest_parent_type
// 设置目标父类型的值
js.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT_TYPE,
GTaskStringUtils.GTASK_JSON_TYPE_GROUP);
// list_id
// 设置列表ID
js.put(GTaskStringUtils.GTASK_JSON_LIST_ID, mParent.getGid());
// prior_sibling_id
// 如果存在前一个兄弟任务，则设置其ID
if (mPriorSibling != null) {
js.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, mPriorSibling.getGid());
}
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("fail to generate task-create jsonobject");
}
// 返回包含创建信息的JSON对象
return js;
}
public JSONObject getUpdateAction(int actionId) {
JSONObject js = new JSONObject();
try {
// action_type
// 设置action类型为更新
js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_UPDATE);
// action_id
// 设置action的ID
js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
// id
// 设置任务的ID
js.put(GTaskStringUtils.GTASK_JSON_ID, getGid());
// entity_delta
// 创建一个实体对象，用于存储任务的更新信息
JSONObject entity = new JSONObject();
// 设置任务名称
entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
if (getNotes() != null) {
// 设置任务备注
entity.put(GTaskStringUtils.GTASK_JSON_NOTES, getNotes());
}
// 设置任务是否已删除
entity.put(GTaskStringUtils.GTASK_JSON_DELETED, getDeleted());
// 将实体对象添加到JSON对象中
js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("fail to generate task-update jsonobject");
}
// 返回包含更新信息的JSON对象
return js;
}
public void setContentByRemoteJSON(JSONObject js) {
if (js != null) {
try {
// id
if (js.has(GTaskStringUtils.GTASK_JSON_ID)) {
setGid(js.getString(GTaskStringUtils.GTASK_JSON_ID));
}// 设置任务的ID
// last_modified
if (js.has(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED)) {
setLastModified(js.getLong(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED));
}// 设置任务的最后修改时间
// name
if (js.has(GTaskStringUtils.GTASK_JSON_NAME)) {
setName(js.getString(GTaskStringUtils.GTASK_JSON_NAME));
}// 设置任务的名称
// notes
if (js.has(GTaskStringUtils.GTASK_JSON_NOTES)) {
setNotes(js.getString(GTaskStringUtils.GTASK_JSON_NOTES));
}// 设置任务的备注
// deleted
if (js.has(GTaskStringUtils.GTASK_JSON_DELETED)) {
setDeleted(js.getBoolean(GTaskStringUtils.GTASK_JSON_DELETED));
}// 设置任务是否已删除
// completed
if (js.has(GTaskStringUtils.GTASK_JSON_COMPLETED)) {
setCompleted(js.getBoolean(GTaskStringUtils.GTASK_JSON_COMPLETED));
}// 设置任务是否已完成
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("fail to get task content from jsonobject");
}// 抛出异常，表示从JSON对象获取任务内容失败
}
}
public void setContentByLocalJSON(JSONObject js) {
// 检查传入的 JSON 对象是否为空，或者是否包含必要的键值
if (js == null || !js.has(GTaskStringUtils.META_HEAD_NOTE)
|| !js.has(GTaskStringUtils.META_HEAD_DATA)) {
Log.w(TAG, "setContentByLocalJSON: nothing is avaiable");
}
try {
// 获取 note 和 dataArray 对象
JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
// 检查 note 的类型是否为 Notes.TYPE_NOTE
if (note.getInt(NoteColumns.TYPE) != Notes.TYPE_NOTE) {
Log.e(TAG, "invalid type");
return;
}
// 遍历 dataArray，查找 MIME_TYPE 为 DataConstants.NOTE 的数据对象
for (int i = 0; i < dataArray.length(); i++) {
JSONObject data = dataArray.getJSONObject(i);
if (TextUtils.equals(data.getString(DataColumns.MIME_TYPE), DataConstants.NOTE)) {
// 设置名称为找到的数据对象的 CONTENT 字段的值
setName(data.getString(DataColumns.CONTENT));
break;
}
}
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
}
}
public JSONObject getLocalJSONFromContent() {
// 获取任务名称
String name = getName();
try {
// 如果元信息为空，说明这是一个从网页创建的新任务
if (mMetaInfo == null) {
// new task created from web
// 如果任务名称为空，记录警告日志并返回null
if (name == null) {
Log.w(TAG, "the note seems to be an empty one");
return null;
}
// 创建一个新的JSON对象用于存储任务信息
JSONObject js = new JSONObject();
JSONObject note = new JSONObject();
JSONArray dataArray = new JSONArray();
JSONObject data = new JSONObject();
// 将任务名称放入data对象的CONTENT字段中
data.put(DataColumns.CONTENT, name);
// 将data对象添加到dataArray中
dataArray.put(data);
// 将dataArray放入js对象的META_HEAD_DATA字段中
js.put(GTaskStringUtils.META_HEAD_DATA, dataArray);
// 设置note对象的TYPE字段为Notes.TYPE_NOTE
note.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
// 将note对象放入js对象的META_HEAD_NOTE字段中
js.put(GTaskStringUtils.META_HEAD_NOTE, note);
// 返回包含任务信息的js对象
return js;
} else {
// synced task
// 如果元信息不为空，说明这是一个已同步的任务
// 获取note对象和dataArray对象
JSONObject note = mMetaInfo.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
JSONArray dataArray = mMetaInfo.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
// 遍历dataArray，找到类型为DataConstants.NOTE的数据对象
for (int i = 0; i < dataArray.length(); i++) {
JSONObject data = dataArray.getJSONObject(i);
if (TextUtils.equals(data.getString(DataColumns.MIME_TYPE), DataConstants.NOTE)) {
// 将任务名称放入找到的data对象的CONTENT字段中
data.put(DataColumns.CONTENT, getName());
break;
}
}
// 设置note对象的TYPE字段为Notes.TYPE_NOTE
note.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
// 返回包含任务信息的mMetaInfo对象
return mMetaInfo;
}
} catch (JSONException e) {
// 如果发生异常，记录错误日志并返回null
Log.e(TAG, e.toString());
e.printStackTrace();
return null;
}
}
// 设置元信息，将MetaData对象中的notes转换为JSONObject并存储到mMetaInfo中
public void setMetaInfo(MetaData metaData) {
if (metaData != null && metaData.getNotes() != null) {
try {
mMetaInfo = new JSONObject(metaData.getNotes());
} catch (JSONException e) {
Log.w(TAG, e.toString());
mMetaInfo = null;
}
}
}
// 根据Cursor对象获取同步操作类型
public int getSyncAction(Cursor c) {
try {
JSONObject noteInfo = null;
if (mMetaInfo != null && mMetaInfo.has(GTaskStringUtils.META_HEAD_NOTE)) {
noteInfo = mMetaInfo.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
}
if (noteInfo == null) {
Log.w(TAG, "it seems that note meta has been deleted");
return SYNC_ACTION_UPDATE_REMOTE;
}
if (!noteInfo.has(NoteColumns.ID)) {
Log.w(TAG, "remote note id seems to be deleted");
return SYNC_ACTION_UPDATE_LOCAL;
}
// validate the note id now
// 验证note id是否匹配
if (c.getLong(SqlNote.ID_COLUMN) != noteInfo.getLong(NoteColumns.ID)) {
Log.w(TAG, "note id doesn't match");
return SYNC_ACTION_UPDATE_LOCAL;
}
if (c.getInt(SqlNote.LOCAL_MODIFIED_COLUMN) == 0) {
// there is no local update
// 没有本地更新
if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
// no update both side
// 两边都没有更新
return SYNC_ACTION_NONE;
} else {
// apply remote to local
// 应用远程到本地
return SYNC_ACTION_UPDATE_LOCAL;
}
} else {
// validate gtask id
// 验证gtask id是否匹配
if (!c.getString(SqlNote.GTASK_ID_COLUMN).equals(getGid())) {
Log.e(TAG, "gtask id doesn't match");
return SYNC_ACTION_ERROR;
}
if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
// local modification only
// 只有本地修改
return SYNC_ACTION_UPDATE_REMOTE;
} else {
return SYNC_ACTION_UPDATE_CONFLICT;
}
}
} catch (Exception e) {
Log.e(TAG, e.toString());
e.printStackTrace();
}
return SYNC_ACTION_ERROR;
}
// 判断任务是否有价值保存
public boolean isWorthSaving() {
return mMetaInfo != null || (getName() != null && getName().trim().length() > 0)
|| (getNotes() != null && getNotes().trim().length() > 0);
}
// 设置任务完成状态
public void setCompleted(boolean completed) {
this.mCompleted = completed;
}
// 设置任务备注
public void setNotes(String notes) {
this.mNotes = notes;
}
// 设置前一个兄弟任务
public void setPriorSibling(Task priorSibling) {
this.mPriorSibling = priorSibling;
}
// 设置任务所属的任务列表
public void setParent(TaskList parent) {
this.mParent = parent;
}
// 获取任务完成状态
public boolean getCompleted() {
return this.mCompleted;
}
// 获取任务备注
public String getNotes() {
return this.mNotes;
}
// 获取前一个兄弟任务
public Task getPriorSibling() {
return this.mPriorSibling;
}
// 获取任务所属的任务列表
public TaskList getParent() {
return this.mParent;
}
}

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TaskList.java
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@ -1,347 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.gtask.data;
import android.database.Cursor;
import android.util.Log;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.gtask.exception.ActionFailureException;
import net.micode.notes.tool.GTaskStringUtils;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
public class TaskList extends Node {
private static final String TAG = TaskList.class.getSimpleName();//tag标记
private int mIndex;//当前TaskList的指针
private ArrayList<Task> mChildren;//类中主要的保存数据的单元，用来实现一个以Task为元素的ArrayList
public TaskList() {
super();
mChildren = new ArrayList<Task>();
mIndex = 1;
}
/**生成并返回一个包含了一定数据的JSONObject实体 */
public JSONObject getCreateAction(int actionId) {
JSONObject js = new JSONObject();
try {
// action_type
js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_CREATE);
// action_id
js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
// index
js.put(GTaskStringUtils.GTASK_JSON_INDEX, mIndex);
// entity_delta
JSONObject entity = new JSONObject();//entity实体
entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
entity.put(GTaskStringUtils.GTASK_JSON_CREATOR_ID, "null");
entity.put(GTaskStringUtils.GTASK_JSON_ENTITY_TYPE,
GTaskStringUtils.GTASK_JSON_TYPE_GROUP);
js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("fail to generate tasklist-create jsonobject");
}
return js;
}
/**生成并返回一个包含了一定数据的JSONObject实体 */
public JSONObject getUpdateAction(int actionId) {
JSONObject js = new JSONObject();
try {
// action_type
js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_UPDATE);
// action_id
js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
// id
js.put(GTaskStringUtils.GTASK_JSON_ID, getGid());
// entity_delta
JSONObject entity = new JSONObject();
entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
entity.put(GTaskStringUtils.GTASK_JSON_DELETED, getDeleted());
js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("fail to generate tasklist-update jsonobject");
}
return js;
}
public void setContentByRemoteJSON(JSONObject js) {
if (js != null) {
try {
// id
if (js.has(GTaskStringUtils.GTASK_JSON_ID)) {
setGid(js.getString(GTaskStringUtils.GTASK_JSON_ID));
}
// last_modified
if (js.has(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED)) {
setLastModified(js.getLong(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED));
}
// name
if (js.has(GTaskStringUtils.GTASK_JSON_NAME)) {
setName(js.getString(GTaskStringUtils.GTASK_JSON_NAME));
}
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("fail to get tasklist content from jsonobject");
}
}
}
public void setContentByLocalJSON(JSONObject js) {
if (js == null || !js.has(GTaskStringUtils.META_HEAD_NOTE)) {
Log.w(TAG, "setContentByLocalJSON: nothing is avaiable");
}
try {
JSONObject folder = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
if (folder.getInt(NoteColumns.TYPE) == Notes.TYPE_FOLDER) {
String name = folder.getString(NoteColumns.SNIPPET);
setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX + name);
} else if (folder.getInt(NoteColumns.TYPE) == Notes.TYPE_SYSTEM) {
if (folder.getLong(NoteColumns.ID) == Notes.ID_ROOT_FOLDER)
setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT);
else if (folder.getLong(NoteColumns.ID) == Notes.ID_CALL_RECORD_FOLDER)
setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX
+ GTaskStringUtils.FOLDER_CALL_NOTE);
else
Log.e(TAG, "invalid system folder");
} else {
Log.e(TAG, "error type");
}
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
}
}
public JSONObject getLocalJSONFromContent() {
try {
JSONObject js = new JSONObject();
JSONObject folder = new JSONObject();
String folderName = getName();
if (getName().startsWith(GTaskStringUtils.MIUI_FOLDER_PREFFIX))
folderName = folderName.substring(GTaskStringUtils.MIUI_FOLDER_PREFFIX.length(),
folderName.length());
folder.put(NoteColumns.SNIPPET, folderName);
if (folderName.equals(GTaskStringUtils.FOLDER_DEFAULT)
|| folderName.equals(GTaskStringUtils.FOLDER_CALL_NOTE))
folder.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
else
folder.put(NoteColumns.TYPE, Notes.TYPE_FOLDER);
js.put(GTaskStringUtils.META_HEAD_NOTE, folder);
return js;
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
return null;
}
}
public int getSyncAction(Cursor c) {
try {
if (c.getInt(SqlNote.LOCAL_MODIFIED_COLUMN) == 0) {
// there is no local update
if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
// no update both side
return SYNC_ACTION_NONE;
} else {
// apply remote to local
return SYNC_ACTION_UPDATE_LOCAL;
}
} else {
// validate gtask id
if (!c.getString(SqlNote.GTASK_ID_COLUMN).equals(getGid())) {
Log.e(TAG, "gtask id doesn't match");
return SYNC_ACTION_ERROR;
}
if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
// local modification only
return SYNC_ACTION_UPDATE_REMOTE;
} else {
// for folder conflicts, just apply local modification
return SYNC_ACTION_UPDATE_REMOTE;
}
}
} catch (Exception e) {
Log.e(TAG, e.toString());
e.printStackTrace();
}
return SYNC_ACTION_ERROR;
}
/**获得TaskList的大小，即mChildren的大小 */
public int getChildTaskCount() {
return mChildren.size();
}
/**返回值为是否成功添加任务
* 实现功能：在当前任务表末尾添加新的任务
*/
public boolean addChildTask(Task task) {
boolean ret = false;
if (task != null && !mChildren.contains(task)) {
ret = mChildren.add(task);
if (ret) {
// need to set prior sibling and parent
task.setPriorSibling(mChildren.isEmpty() ? null : mChildren
.get(mChildren.size() - 1));
task.setParent(this);
//注意：每一次ArrayList的变化都要紧跟相关Task中的PriorSibling的更改，接下来几个函数都有相关操作
}
}
return ret;
}
/**在当前任务表的指定位置添加新的任务 */
public boolean addChildTask(Task task, int index) {
if (index < 0 || index > mChildren.size()) {
Log.e(TAG, "add child task: invalid index");
return false;
}
int pos = mChildren.indexOf(task);
if (task != null && pos == -1) {
mChildren.add(index, task);
// update the task list
Task preTask = null;
Task afterTask = null;
if (index != 0)
preTask = mChildren.get(index - 1);
if (index != mChildren.size() - 1)
afterTask = mChildren.get(index + 1);
task.setPriorSibling(preTask);
if (afterTask != null)
afterTask.setPriorSibling(task);
}
return true;
}
/**返回删除是否成功，删除TaskList中的一个Task */
public boolean removeChildTask(Task task) {
boolean ret = false;
int index = mChildren.indexOf(task);
if (index != -1) {
ret = mChildren.remove(task);
if (ret) {
// reset prior sibling and parent
task.setPriorSibling(null);
task.setParent(null);
// update the task list
if (index != mChildren.size()) {
mChildren.get(index).setPriorSibling(
index == 0 ? null : mChildren.get(index - 1));
}
}
}
return ret;
}
/**将当前TaskList中含有的某个Task移到index位置 */
public boolean moveChildTask(Task task, int index) {
if (index < 0 || index >= mChildren.size()) {
Log.e(TAG, "move child task: invalid index");
return false;
}
int pos = mChildren.indexOf(task);
if (pos == -1) {
Log.e(TAG, "move child task: the task should in the list");
return false;
}
if (pos == index)
return true;
return (removeChildTask(task) && addChildTask(task, index));
//利用已实现好的功能完成当下功能
}
/**返回寻找结果，按照gid寻找Task */
public Task findChildTaskByGid(String gid) {
for (int i = 0; i < mChildren.size(); i++) {
Task t = mChildren.get(i);
if (t.getGid().equals(gid)) {
return t;
}
}
return null;
}
/**返回指定Task的index */
public int getChildTaskIndex(Task task) {
return mChildren.indexOf(task);
}
/**返回指定index的Task */
public Task getChildTaskByIndex(int index) {
if (index < 0 || index >= mChildren.size()) {
Log.e(TAG, "getTaskByIndex: invalid index");
return null;
}
return mChildren.get(index);
}
/**返回指定gid的Task */
public Task getChilTaskByGid(String gid) {
for (Task task : mChildren) {//一种常见的ArrayList的遍历方法
if (task.getGid().equals(gid))
return task;
}
return null;
}
public ArrayList<Task> getChildTaskList() {
return this.mChildren;
}
public void setIndex(int index) {
this.mIndex = index;
}
public int getIndex() {
return this.mIndex;
}
}

61
TeamInfo.java
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@ -1,61 +0,0 @@
package cn.fly.entity;
public class TeamInfo {
private String id;
private String sno;
private String name;
private String sex;
private String tel;
// Getter和Setter方法
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getSno() {
return sno;
}
public void setSno(String sno) {
this.sno = sno;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getTel() {
return tel;
}
public void setTel(String tel) {
this.tel = tel;
}
@Override
public String toString() {
return "TeamInfo{" +
"id='" + id + '\'' +
", sno='" + sno + '\'' +
", name='" + name + '\'' +
", sex='" + sex + '\'' +
", tel='" + tel + '\'' +
'}';
}
}

150
TeamInfoDal.java
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@ -1,150 +0,0 @@
package cn.fly.jdbc;
import cn.fly.entity.TeamInfo;
import java.io.IOException;
import java.sql.*;
import java.util.*;
public class TeamInfoDal {
// 数据库连接字符串和相关属性
private static final String DB_URL = "jdbc:mysql://localhost:3306/DBTeam";
private static final String USER = "root";
private static final String PASS = "20030815";
// JDBC驱动名
private static final String DRIVER = "com.mysql.cj.jdbc.Driver";
// Connection对象
private Connection conn;
public static void main(String[] args) throws IOException {
try {
// 加载JDBC驱动
Class.forName("com.mysql.cj.jdbc.Driver");
// 建立数据库连接
Connection conn = DriverManager.getConnection(DB_URL, USER, PASS);
System.out.println("连接成功");
} catch (Exception e) {
e.printStackTrace();
}
}
// 构造函数
public TeamInfoDal() {
try {
// 加载JDBC驱动
Class.forName("com.mysql.cj.jdbc.Driver");
// 建立数据库连接
conn = DriverManager.getConnection(DB_URL, USER, PASS);
} catch (Exception e) {
e.printStackTrace();
}
}
// 添加报名信息
public boolean addTeamInfo(TeamInfo teamInfo) {
String sql = "INSERT INTO TeamInfo (id, sno, name, sex, tel) VALUES (?, ?, ?, ?, ?)";
try (PreparedStatement stmt = conn.prepareStatement(sql)) {
stmt.setString(1, teamInfo.getId());
stmt.setString(2, teamInfo.getSno());
stmt.setString(3, teamInfo.getName());
stmt.setString(4, teamInfo.getSex());
stmt.setString(5, teamInfo.getTel());
// 执行插入操作并返回结果
int rowsAffected = stmt.executeUpdate();
return rowsAffected > 0;
} catch (SQLException e) {
e.printStackTrace();
return false;
}
}
// 修改报名信息
public boolean updateTeamInfo(TeamInfo teamInfo) {
String sql = "UPDATE TeamInfo SET sno=?, name=?, sex=?, tel=? WHERE id=?";
try (PreparedStatement stmt = conn.prepareStatement(sql)) {
stmt.setString(1, teamInfo.getSno());
stmt.setString(2, teamInfo.getName());
stmt.setString(3, teamInfo.getSex());
stmt.setString(4, teamInfo.getTel());
stmt.setString(5, teamInfo.getId());
int rowsAffected = stmt.executeUpdate();
return rowsAffected > 0;
} catch (SQLException e) {
e.printStackTrace();
return false;
}
}
// 删除报名信息
public boolean deleteTeamInfo(String id) {
String sql = "DELETE FROM TeamInfo WHERE id=?";
try (PreparedStatement stmt = conn.prepareStatement(sql)) {
stmt.setString(1, id);
int rowsAffected = stmt.executeUpdate();
return rowsAffected > 0;
} catch (SQLException e) {
e.printStackTrace();
return false;
}
}
// 根据id查询某条信息
public TeamInfo getTeamInfoById(String id) {
String sql = "SELECT * FROM TeamInfo WHERE id=?";
TeamInfo teamInfo = null;
try (PreparedStatement stmt = conn.prepareStatement(sql)) {
stmt.setString(1, id);
ResultSet rs = stmt.executeQuery();
if (rs.next()) {
teamInfo = new TeamInfo();
teamInfo.setId(rs.getString("id"));
teamInfo.setSno(rs.getString("sno"));
teamInfo.setName(rs.getString("name"));
teamInfo.setSex(rs.getString("sex"));
teamInfo.setTel(rs.getString("tel"));
}
} catch (SQLException e) {
e.printStackTrace();
}
return teamInfo;
}
// 查询所有数据
public List<TeamInfo> getAllTeamInfos() {
String sql = "SELECT * FROM TeamInfo";
List<TeamInfo> list = new ArrayList<>();
try (Statement stmt = conn.createStatement()) {
ResultSet rs = stmt.executeQuery(sql);
while (rs.next()) {
TeamInfo teamInfo = new TeamInfo();
teamInfo.setId(rs.getString("id"));
teamInfo.setSno(rs.getString("sno"));
teamInfo.setName(rs.getString("name"));
teamInfo.setSex(rs.getString("sex"));
teamInfo.setTel(rs.getString("tel"));
list.add(teamInfo);
}
} catch (SQLException e) {
e.printStackTrace();
}
for (TeamInfo teamInfo : list) {
System.out.println(teamInfo.toString());
}
return list;
}
// 关闭数据库连接
public void close() {
try {
if (conn != null && !conn.isClosed()) {
conn.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}

388
WorkingNote.java
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@ -1,388 +0,0 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.micode.notes.model;
import android.appwidget.AppWidgetManager;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.text.TextUtils;
import android.util.Log;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.CallNote;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.DataConstants;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.data.Notes.TextNote;
import net.micode.notes.tool.ResourceParser.NoteBgResources;
public class WorkingNote {
// Note for the working note
private Note mNote;
// Note Id
private long mNoteId;
// Note content
private String mContent;
// Note mode
private int mMode;
private long mAlertDate;
private long mModifiedDate;
private int mBgColorId;
private int mWidgetId;
private int mWidgetType;
private long mFolderId;
private Context mContext;
private static final String TAG = "WorkingNote";
private boolean mIsDeleted;
private NoteSettingChangedListener mNoteSettingStatusListener;
//声明DATA_PROJECTION字符串数组
public static final String[] DATA_PROJECTION = new String[] {
DataColumns.ID,
DataColumns.CONTENT,
DataColumns.MIME_TYPE,
DataColumns.DATA1,
DataColumns.DATA2,
DataColumns.DATA3,
DataColumns.DATA4,
};
//声明NOTE_PROJECTION字符串数组
public static final String[] NOTE_PROJECTION = new String[] {
NoteColumns.PARENT_ID,
NoteColumns.ALERTED_DATE,
NoteColumns.BG_COLOR_ID,
NoteColumns.WIDGET_ID,
NoteColumns.WIDGET_TYPE,
NoteColumns.MODIFIED_DATE
};
private static final int DATA_ID_COLUMN = 0;
private static final int DATA_CONTENT_COLUMN = 1;
private static final int DATA_MIME_TYPE_COLUMN = 2;
private static final int DATA_MODE_COLUMN = 3;
private static final int NOTE_PARENT_ID_COLUMN = 0;
private static final int NOTE_ALERTED_DATE_COLUMN = 1;
private static final int NOTE_BG_COLOR_ID_COLUMN = 2;
private static final int NOTE_WIDGET_ID_COLUMN = 3;
private static final int NOTE_WIDGET_TYPE_COLUMN = 4;
private static final int NOTE_MODIFIED_DATE_COLUMN = 5;
// New note construct
private WorkingNote(Context context, long folderId) {
mContext = context;
mAlertDate = 0;
mModifiedDate = System.currentTimeMillis();
mFolderId = folderId;
mNote = new Note();
mNoteId = 0;
mIsDeleted = false;
mMode = 0;
mWidgetType = Notes.TYPE_WIDGET_INVALIDE;
}
//WorkingNote的构造函数
// Existing note construct
private WorkingNote(Context context, long noteId, long folderId) {
mContext = context;
mNoteId = noteId;
mFolderId = folderId;
mIsDeleted = false;
mNote = new Note();
loadNote();
}
//加载Note
//通过数据库调用query函数找到第一个条目
private void loadNote() {
Cursor cursor = mContext.getContentResolver().query(
ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mNoteId), NOTE_PROJECTION, null,
null, null);
//若存在，储存相应信息
if (cursor != null) {
if (cursor.moveToFirst()) {
mFolderId = cursor.getLong(NOTE_PARENT_ID_COLUMN);
mBgColorId = cursor.getInt(NOTE_BG_COLOR_ID_COLUMN);
mWidgetId = cursor.getInt(NOTE_WIDGET_ID_COLUMN);
mWidgetType = cursor.getInt(NOTE_WIDGET_TYPE_COLUMN);
mAlertDate = cursor.getLong(NOTE_ALERTED_DATE_COLUMN);
mModifiedDate = cursor.getLong(NOTE_MODIFIED_DATE_COLUMN);
}
cursor.close();
//若不存在，报错
} else {
Log.e(TAG, "No note with id:" + mNoteId);
throw new IllegalArgumentException("Unable to find note with id " + mNoteId);
}
loadNoteData();
}
//加载NoteData
private void loadNoteData() {
Cursor cursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI, DATA_PROJECTION,
DataColumns.NOTE_ID + "=?", new String[] {
String.valueOf(mNoteId)
}, null);
if (cursor != null) {
//查到信息不为空
if (cursor.moveToFirst()) {//查看第一项是否存在
do {
String type = cursor.getString(DATA_MIME_TYPE_COLUMN);
if (DataConstants.NOTE.equals(type)) {
mContent = cursor.getString(DATA_CONTENT_COLUMN);
mMode = cursor.getInt(DATA_MODE_COLUMN);
mNote.setTextDataId(cursor.getLong(DATA_ID_COLUMN));
} else if (DataConstants.CALL_NOTE.equals(type)) {
mNote.setCallDataId(cursor.getLong(DATA_ID_COLUMN));
} else {
Log.d(TAG, "Wrong note type with type:" + type);
}
} while (cursor.moveToNext());//查阅所有项，直到为空
}
cursor.close();
} else {
Log.e(TAG, "No data with id:" + mNoteId);
throw new IllegalArgumentException("Unable to find note's data with id " + mNoteId);
}
}
//创建空的Note
//传参：context，文件夹id，widget，背景颜色
public static WorkingNote createEmptyNote(Context context, long folderId, int widgetId,
int widgetType, int defaultBgColorId) {
WorkingNote note = new WorkingNote(context, folderId);
//设定相关属性
note.setBgColorId(defaultBgColorId);
note.setWidgetId(widgetId);
note.setWidgetType(widgetType);
return note;
}
public static WorkingNote load(Context context, long id) {
return new WorkingNote(context, id, 0);
}
//保存Note
public synchronized boolean saveNote() {
if (isWorthSaving()) {//是否值得保存
if (!existInDatabase()) {//是否存在数据库中
if ((mNoteId = Note.getNewNoteId(mContext, mFolderId)) == 0) {
Log.e(TAG, "Create new note fail with id:" + mNoteId);
return false;
}
}
mNote.syncNote(mContext, mNoteId);
/**
* Update widget content if there exist any widget of this note
*/
if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
&& mWidgetType != Notes.TYPE_WIDGET_INVALIDE
&& mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onWidgetChanged();
}
return true;
} else {
return false;
}
}
//是否在数据库中存在
public boolean existInDatabase() {
return mNoteId > 0;
}
//是否值得保存
private boolean isWorthSaving() {
//被删除或（不在数据库中 内容为空）或本地已保存过
if (mIsDeleted || (!existInDatabase() && TextUtils.isEmpty(mContent))
|| (existInDatabase() && !mNote.isLocalModified())) {
return false;
} else {
return true;
}
}
//设置mNoteSettingStatusListener
public void setOnSettingStatusChangedListener(NoteSettingChangedListener l) {
mNoteSettingStatusListener = l;
}
//设置AlertDate
//若mAlertDate与data不同，则更改mAlertDate并设定NoteValue
public void setAlertDate(long date, boolean set) {
if (date != mAlertDate) {
mAlertDate = date;
mNote.setNoteValue(NoteColumns.ALERTED_DATE, String.valueOf(mAlertDate));
}
if (mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onClockAlertChanged(date, set);
}
}
//设定删除标记
public void markDeleted(boolean mark) {
//设定标记
mIsDeleted = mark;
if (mWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID
&& mWidgetType != Notes.TYPE_WIDGET_INVALIDE && mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onWidgetChanged();
//调用mNoteSettingStatusListener的onWidgetChanged方法
}
}
//设定背景颜色
public void setBgColorId(int id) {
if (id != mBgColorId) {//设定条件id != mBgColorId
mBgColorId = id;
if (mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onBackgroundColorChanged();
}
mNote.setNoteValue(NoteColumns.BG_COLOR_ID, String.valueOf(id));
}
}
//设定检查列表模式
//参数：mode
public void setCheckListMode(int mode) {
if (mMode != mode) {//设定条件mMode != mode
if (mNoteSettingStatusListener != null) {
mNoteSettingStatusListener.onCheckListModeChanged(mMode, mode);
}
mMode = mode;
mNote.setTextData(TextNote.MODE, String.valueOf(mMode));
}
}
//设定setWidgetType
//参数：type
public void setWidgetType(int type) {
if (type != mWidgetType) {//设定条件type != mWidgetType
mWidgetType = type;
mNote.setNoteValue(NoteColumns.WIDGET_TYPE, String.valueOf(mWidgetType));
//调用Note的setNoteValue方法更改WidgetType
}
}
//设定WidgetId
//参数：id
public void setWidgetId(int id) {
if (id != mWidgetId) {//设定条件id != mWidgetId
mWidgetId = id;
mNote.setNoteValue(NoteColumns.WIDGET_ID, String.valueOf(mWidgetId));
//调用Note的setNoteValue方法更改WidgetId
}
}
//设定WorkingText
//参数：更改的text
public void setWorkingText(String text) {
if (!TextUtils.equals(mContent, text)) {//设定条件 mContent，text内容不同
mContent = text;
mNote.setTextData(DataColumns.CONTENT, mContent);
//调用Note的setTextData方法更改WorkingText
}
}
//转变mNote的callDate及CallNote信息
//参数：String phoneNumber，long callDate
public void convertToCallNote(String phoneNumber, long callDate) {
mNote.setCallData(CallNote.CALL_DATE, String.valueOf(callDate));
mNote.setCallData(CallNote.PHONE_NUMBER, phoneNumber);
mNote.setNoteValue(NoteColumns.PARENT_ID, String.valueOf(Notes.ID_CALL_RECORD_FOLDER));
}
//判断是否有时钟题型
public boolean hasClockAlert() {
return (mAlertDate > 0 ? true : false);
}
//获取Content
public String getContent() {
return mContent;
}
//获取AlertDate
public long getAlertDate() {
return mAlertDate;
}
//获取ModifiedDate
public long getModifiedDate() {
return mModifiedDate;
}
//获取背景颜色来源id
public int getBgColorResId() {
return NoteBgResources.getNoteBgResource(mBgColorId);
}
//获取背景颜色id
public int getBgColorId() {
return mBgColorId;
}
////获取标题背景颜色id
public int getTitleBgResId() {
return NoteBgResources.getNoteTitleBgResource(mBgColorId);
}
//获取CheckListMode
public int getCheckListMode() {
return mMode;
}
//获取便签id
public long getNoteId() {
return mNoteId;
}
//获取文件夹id
public long getFolderId() {
return mFolderId;
}
//获取WidgetId
public int getWidgetId() {
return mWidgetId;
}
//获取WidgetType
public int getWidgetType() {
return mWidgetType;
}
/**
* 创建接口NoteSettingChangedListener，便签更新监视
* 为NoteEditActivity提供接口
*/
public interface NoteSettingChangedListener {
/**
* Called when the background color of current note has just changed
*/
void onBackgroundColorChanged();
/**
* Called when user set clock
*/
void onClockAlertChanged(long date, boolean set);
/**
* Call when user create note from widget
*/
void onWidgetChanged();
/**
* Call when switch between check list mode and normal mode
* @param oldMode is previous mode before change
* @param newMode is new mode
*/
void onCheckListModeChanged(int oldMode, int newMode);
}
}
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