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xiaominote_code_analysis
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Merge branch 'main' of https://bdgit.educoder.net/pgytbhcw9/xiaominote_code_analysis

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main
qijingxi 7 months ago
parent d1b81592d3 b72f772fd9
commit dcebdb7ed2
15 changed files with 2129 additions and 1741 deletions
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637
src/java/net/micode/notes/tool/BackupUtils.java
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@ -14,331 +14,316 @@
* 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) {
if (sInstance == null) {
sInstance = new BackupUtils(context);
}
return sInstance;
}
/**
* Following states are signs to represents backup or restore
* status
*/
// Currently, the sdcard is not mounted
public static final int STATE_SD_CARD_UNMOUONTED = 0;
// The backup file not exist
public static final int STATE_BACKUP_FILE_NOT_EXIST = 1;
// The data is not well formated, may be changed by other programs
public static final int STATE_DATA_DESTROIED = 2;
// Some run-time exception which causes restore or backup fails
public static final int STATE_SYSTEM_ERROR = 3;
// Backup or restore success
public static final int STATE_SUCCESS = 4;
private TextExport mTextExport;
private BackupUtils(Context context) {
mTextExport = new TextExport(context);
}
private static boolean externalStorageAvailable() {
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) {
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
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.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);
} 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) {
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)) {
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() {
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
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
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);
} 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());
sb.append(context.getString(filePathResId));
File filedir = new File(sb.toString());
sb.append(context.getString(
fileNameFormatResId,
DateFormat.format(context.getString(R.string.format_date_ymd),
System.currentTimeMillis())));
File file = new File(sb.toString());
try {
if (!filedir.exists()) {
filedir.mkdir();
}
if (!file.exists()) {
file.createNewFile();
}
return file;
} catch (SecurityException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
package net.micode.notes.tool;
public class BackupUtils {
private static final String TAG = "BackupUtils";
// Singleton stuff
private static BackupUtils sInstance; //类里面为什么可以定义自身类的对象？
public static synchronized BackupUtils getInstance(Context context) {
//ynchronized 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,都要检查有没有其它线程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。
//它包括两种用法：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 = ""; //为什么为空?
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 将根目录里的便签导出（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;
}
}

448
src/java/net/micode/notes/tool/DataUtils.java
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@ -13,9 +13,9 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*该类定义在 net.micode.notes.tool 包下，并导入了Android和Java的一些核心类。这些导入的类提供了对内容提供者操作、日志记录、游标以及存储值的支持。 */
package net.micode.notes.tool;
/*定义了一个公共类 DataUtils，并创建了一个常量 TAG 用于日志记录。 */
import android.content.ContentProviderOperation;
import android.content.ContentProviderResult;
import android.content.ContentResolver;
@ -34,7 +34,9 @@ import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute;
import java.util.ArrayList;
import java.util.HashSet;
/*这个方法实现了根据一组ID批量删除笔记的功能。
它首先检查ID集合是否为空，并创建一个操作列表。
通过 ContentResolver 执行删除操作，成功后返回 true，失败则返回 false。 */
public class DataUtils {
public static final String TAG = "DataUtils";
public static boolean batchDeleteNotes(ContentResolver resolver, HashSet<Long> ids) {
@ -71,7 +73,9 @@ public class DataUtils {
}
return false;
}
/*此方法将指定的笔记移动到目标文件夹。
更新笔记的父文件夹ID并标记为本地修改。 */
/*查询非系统文件夹的数量。异常处理用于确保在查询失败时释放游标资源。 */
public static void moveNoteToFoler(ContentResolver resolver, long id, long srcFolderId, long desFolderId) {
ContentValues values = new ContentValues();
values.put(NoteColumns.PARENT_ID, desFolderId);
@ -88,238 +92,294 @@ public class DataUtils {
* @param: [resolver, ids, folderId]
* @return: boolean
*/
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));
builder.withValue(NoteColumns.PARENT_ID, folderId);
builder.withValue(NoteColumns.LOCAL_MODIFIED, 1);
operationList.add(builder.build());
}
try {
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
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;
/*检查数据库中是否存在特定类型的可见笔记。 */
/**
* 批量将便签移动到指定文件夹
* @param resolver ContentResolver对象
* @param ids 需要移动的便签ID集合
* @param folderId 目标文件夹ID
* @return 是否移动成功
*/
public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids, long folderId) {
if (ids == null) {
Log.d(TAG, "the ids is null");
return true;
}
/**
* 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);
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;
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
for (long id : ids) {
ContentProviderOperation.Builder builder = ContentProviderOperation
.newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
builder.withValue(NoteColumns.PARENT_ID, folderId);
builder.withValue(NoteColumns.LOCAL_MODIFIED, 1);
operationList.add(builder.build());
}
/**
* @Method visibleInNoteDatabase
* @Date 2024/12/13 9:08
* @param resolver
* @param noteId
* @param type
* @Author lenovo
* @Return boolean
* @Description 访问数据库中是否有 noteId 对应的便签
*/
public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) {
/**
* withAppendedId 将 URI 和 ID 连接成一个新的URI
* query 返回 Uri 中符合 selection 的表格
* lenovo 2024/12/13 9:06
*/
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
null,
NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER,
new String [] {String.valueOf(type)},
null);
boolean exist = false;
if (cursor != null) {
if (cursor.getCount() > 0) {
exist = true;
}
cursor.close();
try {
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
if (results == null || results.length == 0 || results[0] == null) {
Log.d(TAG, "delete notes failed, ids:" + ids.toString());
return false;
}
return exist;
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 boolean existInNoteDatabase(ContentResolver resolver, long noteId) {
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
null, null, null, null);
/**
* 获取用户文件夹的数量（不包括系统文件夹）
* @param resolver ContentResolver对象
* @return 用户文件夹的数量
*/
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);
boolean exist = false;
if (cursor != null) {
if (cursor.getCount() > 0) {
exist = true;
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();
}
cursor.close();
}
return exist;
}
return count;
}
public static boolean existInDataDatabase(ContentResolver resolver, long dataId) {
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId),
null, null, null, null);
/**
* 检查数据库中是否存在指定ID和类型的便签
* @param resolver ContentResolver对象
* @param noteId 便签ID
* @param type 便签类型
* @return 是否存在
*/
public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) {
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
null,
NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER,
new String [] {String.valueOf(type)},
null);
boolean exist = false;
if (cursor != null) {
if (cursor.getCount() > 0) {
exist = true;
}
cursor.close();
boolean exist = false;
if (cursor != null) {
if (cursor.getCount() > 0) {
exist = true;
}
return exist;
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();
/**
* 检查数据库中是否存在指定ID的便签
* @param resolver ContentResolver对象
* @param noteId 便签ID
* @return 是否存在
*/
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;
}
return exist;
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);
/**
* 检查数据库中是否存在指定ID的数据
* @param resolver ContentResolver对象
* @param dataId 数据ID
* @return 是否存在
*/
public static boolean existInDataDatabase(ContentResolver resolver, long dataId) {
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId),
null, null, null, null);
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);
widget.widgetType = c.getInt(1);
set.add(widget);
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, e.toString());
}
} while (c.moveToNext());
}
c.close();
boolean exist = false;
if (cursor != null) {
if (cursor.getCount() > 0) {
exist = true;
}
return set;
cursor.close();
}
return exist;
}
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();
}
/**
* 检查数据库中是否存在指定名称的可见文件夹
* @param resolver ContentResolver对象
* @param name 文件夹名称
* @return 是否存在
*/
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;
}
return "";
cursor.close();
}
return exist;
}
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);
/**
* 获取指定文件夹中的小部件属性集合
* @param resolver ContentResolver对象
* @param folderId 文件夹ID
* @return 小部件属性集合
*/
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);
if (cursor != null) {
if (cursor.moveToFirst()) {
HashSet<AppWidgetAttribute> set = null;
if (c != null) {
if (c.moveToFirst()) {
set = new HashSet<AppWidgetAttribute>();
do {
try {
return cursor.getLong(0);
AppWidgetAttribute widget = new AppWidgetAttribute();
widget.widgetId = c.getInt(0);
widget.widgetType = c.getInt(1);
set.add(widget);
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, "Get call note id fails " + e.toString());
Log.e(TAG, e.toString());
}
}
cursor.close();
} while (c.moveToNext());
}
return 0;
c.close();
}
return set;
}
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);
/**
* 根据便签ID获取电话号码
* @param resolver ContentResolver对象
* @param noteId 便签ID
* @return 电话号码
*/
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) {
String snippet = "";
if (cursor.moveToFirst()) {
snippet = cursor.getString(0);
}
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 snippet;
}
throw new IllegalArgumentException("Note is not found with id: " + noteId);
}
return "";
}
public static String getFormattedSnippet(String snippet) {
if (snippet != null) {
snippet = snippet.trim();
int index = snippet.indexOf('\n');
if (index != -1) {
snippet = snippet.substring(0, index);
/**
* 根据电话号码和通话日期获取便签ID
* @param resolver ContentResolver对象
* @param phoneNumber 电话号码
* @param callDate 通话日期
* @return 便签ID
*/
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);
if (cursor != null) {
if (cursor.moveToFirst()) {
try {
return cursor.getLong(0);
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, "Get call note id fails " + e.toString());
}
}
cursor.close();
}
return 0;
}
/**
* 根据便签ID获取便签摘要
* @param resolver ContentResolver对象
* @param noteId 便签ID
* @return 便签摘要
*/
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);
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 Cursor searchInNoteDatabase(ContentResolver resolver, String query) {
Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
new String[]{NoteColumns.ID},
Notes.DataColumns.CONTENT + " LIKE'%" + query +"%'",
null,
null);
return cursor;
/**
* 格式化便签摘要
* @param snippet 便签摘要
* @return 格式化后的便签摘要
*/
public static String getFormattedSnippet(String snippet) {
if (snippet != null) {
snippet = snippet.trim();
int index = snippet.indexOf('\n');
if (index != -1) {
snippet = snippet.substring(0, index);
}
}
return snippet;
}
/**
* 在数据库中搜索包含指定查询内容的便签
* @param resolver ContentResolver对象
* @param query 查询内容
* @return 包含查询结果的Cursor对象
*/
public static Cursor searchInNoteDatabase(ContentResolver resolver, String query) {
Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
new String[]{NoteColumns.ID},
Notes.DataColumns.CONTENT + " LIKE'%" + query +"%'",
null,
null);
return cursor;
}

3
src/java/net/micode/notes/tool/GTaskStringUtils.java
Unescape View File

@ -16,6 +16,7 @@
package net.micode.notes.tool;
// 该类用于定义 Google 任务相关的 JSON 字段常量
public class GTaskStringUtils {
public final static String GTASK_JSON_ACTION_ID = "action_id";
@ -110,4 +111,4 @@ public class GTaskStringUtils {
public final static String META_NOTE_NAME = "[META INFO] DON'T UPDATE AND DELETE";
}
}

19
src/java/net/micode/notes/tool/ResourceParser.java
Unescape View File

@ -22,6 +22,7 @@ import android.preference.PreferenceManager;
import net.micode.notes.R;
import net.micode.notes.ui.NotesPreferenceActivity;
// 资源解析器类
public class ResourceParser {
public static final int YELLOW = 0;
@ -40,6 +41,7 @@ public class ResourceParser {
public static final int BG_DEFAULT_FONT_SIZE = TEXT_MEDIUM;
// 备忘录背景资源类
public static class NoteBgResources {
private final static int [] BG_EDIT_RESOURCES = new int [] {
R.drawable.edit_yellow,
@ -57,15 +59,18 @@ public class ResourceParser {
R.drawable.edit_title_red
};
// 获取备忘录背景资源
public static int getNoteBgResource(int id) {
return BG_EDIT_RESOURCES[id];
}
// 获取备忘录标题背景资源
public static int getNoteTitleBgResource(int id) {
return BG_EDIT_TITLE_RESOURCES[id];
}
}
// 获取默认背景ID
public static int getDefaultBgId(Context context) {
if (PreferenceManager.getDefaultSharedPreferences(context).getBoolean(
NotesPreferenceActivity.PREFERENCE_SET_BG_COLOR_KEY, false)) {
@ -75,6 +80,7 @@ public class ResourceParser {
}
}
// 备忘录项目背景资源类
public static class NoteItemBgResources {
private final static int [] BG_FIRST_RESOURCES = new int [] {
R.drawable.list_yellow_up,
@ -108,27 +114,33 @@ public class ResourceParser {
R.drawable.list_red_single
};
// 获取备忘录第一个背景资源
public static int getNoteBgFirstRes(int id) {
return BG_FIRST_RESOURCES[id];
}
// 获取备忘录最后一个背景资源
public static int getNoteBgLastRes(int id) {
return BG_LAST_RESOURCES[id];
}
// 获取备忘录单独背景资源
public static int getNoteBgSingleRes(int id) {
return BG_SINGLE_RESOURCES[id];
}
// 获取备忘录正常背景资源
public static int getNoteBgNormalRes(int id) {
return BG_NORMAL_RESOURCES[id];
}
// 获取文件夹背景资源
public static int getFolderBgRes() {
return R.drawable.list_folder;
}
}
// 小部件背景资源类
public static class WidgetBgResources {
private final static int [] BG_2X_RESOURCES = new int [] {
R.drawable.widget_2x_yellow,
@ -138,6 +150,7 @@ public class ResourceParser {
R.drawable.widget_2x_red,
};
// 获取2x小部件背景资源
public static int getWidget2xBgResource(int id) {
return BG_2X_RESOURCES[id];
}
@ -150,11 +163,13 @@ public class ResourceParser {
R.drawable.widget_4x_red
};
// 获取4x小部件背景资源
public static int getWidget4xBgResource(int id) {
return BG_4X_RESOURCES[id];
}
}
// 文本外观资源类
public static class TextAppearanceResources {
private final static int [] TEXTAPPEARANCE_RESOURCES = new int [] {
R.style.TextAppearanceNormal,
@ -163,6 +178,7 @@ public class ResourceParser {
R.style.TextAppearanceSuper
};
// 获取文本外观资源
public static int getTexAppearanceResource(int id) {
/**
* HACKME: Fix bug of store the resource id in shared preference.
@ -175,8 +191,9 @@ public class ResourceParser {
return TEXTAPPEARANCE_RESOURCES[id];
}
// 获取资源大小
public static int getResourcesSize() {
return TEXTAPPEARANCE_RESOURCES.length;
}
}
}
}

113
src/java/net/micode/notes/ui/AlarmAlertActivity.java
Unescape View File

@ -14,6 +14,7 @@
* limitations under the License.
*/
// 导入必要的类和接口
package net.micode.notes.ui;
import android.app.Activity;
@ -39,78 +40,85 @@ import net.micode.notes.tool.DataUtils;
import java.io.IOException;
// AlarmAlertActivity类，继承自Activity，实现OnClickListener和OnDismissListener接口
public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener {
private long mNoteId;
private String mSnippet;
private long mNoteId; //文本在数据库存储中的ID号
private String mSnippet; //闹钟提示时出现的文本片段
private static final int SNIPPET_PREW_MAX_LEN = 60;
MediaPlayer mPlayer;
@Override
/**
* @Method onCreate
* @Date 2024/12/25 8:15
* @param savedInstanceState
* @Author lenovo
* @Return void
* @Description
*/
protected void onCreate(Bundle savedInstanceState) {
/**
* Bundel 类似于 map，key-value存储
* super 代表父类, 调用 onCreate 用于恢复上次结束的状态
* lenovo 2024/12/25 8:39
*/
protected void onCreate(Bundle 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);
//界面显示——无标题
final Window win = getWindow();
// 在屏幕锁定时显示
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
// 锁屏时到闹钟提示时间后，点亮屏幕
if (!isScreenOn()) {
win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
//保持窗体点亮
| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
//将窗体点亮
| WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
//允许窗体点亮时锁屏
| 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
Intent intent = getIntent();
try {
mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
// 超出长度则变为 substr + "..."
//根据ID从数据库中获取标签的内容；
//getContentResolver（）是实现数据共享，实例存储。
mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0,
SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
: mSnippet;
//判断标签片段是否达到符合长度
} catch (IllegalArgumentException e) {
e.printStackTrace();
return;
}
/*
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();
// 查找数据库中有没有 mNoteId 的便签, 如果有则激发对话框 + 闹钟提示音
if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
showActionDialog();
//弹出对话框
playAlarmSound();
//闹钟提示音激发
} else {
finish();
//完成闹钟动作
}
}
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);
return pm.isScreenOn();
}
private void playAlarmSound() {
//闹钟提示音激发
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
int silentModeStreams = Settings.System.getInt(getContentResolver(),
Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) {
mPlayer.setAudioStreamType(silentModeStreams);
} else {
@ -118,12 +126,19 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
}
try {
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();
//准备同步
mPlayer.setLooping(true);
//设置是否循环播放
mPlayer.start();
//开始播放
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
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) {
// TODO Auto-generated catch block
e.printStackTrace();
@ -135,41 +150,61 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
e.printStackTrace();
}
}
private void showActionDialog() {// TODO: 2024/1/2 可以模仿这个，写一个xxx条件下弹出来的Dialog
private void showActionDialog() {
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);
//为对话框设置标题
dialog.setMessage(mSnippet);
//为对话框设置内容
dialog.setPositiveButton(R.string.notealert_ok, this);
//给对话框添加"Yes"按钮
if (isScreenOn()) {
dialog.setNegativeButton(R.string.notealert_enter, this);
}
}//对话框添加"No"按钮
dialog.show().setOnDismissListener(this);
}
public void onClick(DialogInterface dialog, int which) {
switch (which) {
//用which来选择click后下一步的操作
case DialogInterface.BUTTON_NEGATIVE:
//这是取消操作
Intent intent = new Intent(this, NoteEditActivity.class);
//实现两个类间的数据传输
intent.setAction(Intent.ACTION_VIEW);
//设置动作属性
intent.putExtra(Intent.EXTRA_UID, mNoteId);
//实现key-value对
//EXTRA_UID为key；mNoteId为键
startActivity(intent);
//开始动作
break;
default:
//这是确定操作
break;
}
}
public void onDismiss(DialogInterface dialog) {
//忽略
stopAlarmSound();
//停止闹钟声音
finish();
//完成该动作
}
private void stopAlarmSound() {
if (mPlayer != null) {
mPlayer.stop();
//停止播放
mPlayer.release();
//释放MediaPlayer对象
mPlayer = null;
}
}
}
}

42
src/java/net/micode/notes/ui/AlarmInitReceiver.java
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@ -30,36 +30,60 @@ import net.micode.notes.data.Notes.NoteColumns;
public class AlarmInitReceiver extends BroadcastReceiver {
// 定义查询数据库时要获取的列
private static final String [] PROJECTION = new String [] {
NoteColumns.ID,
NoteColumns.ALERTED_DATE
NoteColumns.ID, // 笔记的ID
NoteColumns.ALERTED_DATE // 笔记的提醒日期
};
// 定义列的索引，以便在Cursor中快速访问
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();
long currentDate = System.currentTimeMillis(); // 获取当前的系统时间（毫秒）
// 从内容提供者中查询需要提醒的笔记
// Notes.CONTENT_NOTE_URI 是内容提供者的URI
// PROJECTION 指定了要查询的列
// 查询条件是提醒日期大于当前日期，且笔记类型为普通笔记（Notes.TYPE_NOTE）
Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
PROJECTION,
NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,
new String[] { String.valueOf(currentDate) },
null);
new String[] { String.valueOf(currentDate) }, // 查询参数，这里只有当前日期
null); // 不需要排序
// 检查Cursor是否为null
if (c != null) {
// 如果Cursor不为空，移动到第一条记录
if (c.moveToFirst()) {
// 开始遍历Cursor中的所有记录
do {
// 获取当前笔记的提醒日期
long alertDate = c.getLong(COLUMN_ALERTED_DATE);
// 创建一个Intent，目标组件是AlarmReceiver
Intent sender = new Intent(context, AlarmReceiver.class);
// 为Intent设置数据URI，这里使用ContentUris.withAppendedId方法将笔记ID附加到Notes的内容URI上
sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));
// 创建一个PendingIntent，这里使用getBroadcast方法，因为AlarmReceiver是一个BroadcastReceiver
// 注意：这里使用的请求码（第二个参数）为0，这可能导致如果有多个相同的Intent被发送时，PendingIntent会被覆盖
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);
AlarmManager alermManager = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
// 获取AlarmManager服务
AlarmManager alermManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
// 设置一个闹钟，当到达提醒日期时，触发PendingIntent（即发送广播给AlarmReceiver）
// AlarmManager.RTC_WAKEUP表示在指定时间唤醒设备并发送广播
alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
} while (c.moveToNext());
} while (c.moveToNext()); // 移动到下一条记录，继续循环
}
// 关闭Cursor
c.close();
}
}
}
}

21
src/java/net/micode/notes/ui/AlarmReceiver.java
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@ -14,17 +14,30 @@
* limitations under the License.
*/
// 指定类所在的包名
package net.micode.notes.ui;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
// 导入所需的类
import android.content.BroadcastReceiver; // 广播接收器基类
import android.content.Context; // 提供应用环境信息的类
import android.content.Intent; // 用于组件间通信的消息传递对象
// 定义一个公开类AlarmReceiver，它继承自BroadcastReceiver
public class AlarmReceiver extends BroadcastReceiver {
// 重写onReceive方法，当接收到广播时调用此方法
@Override
public void onReceive(Context context, Intent intent) {
// 设置intent的目标组件为AlarmAlertActivity类
// 这意味着当这个广播接收器接收到广播时，它希望启动AlarmAlertActivity活动
intent.setClass(context, AlarmAlertActivity.class);
// 为intent添加FLAG_ACTIVITY_NEW_TASK标志
// 这通常用于从非活动上下文中启动活动时，确保活动作为新的任务启动
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
// 使用context对象调用startActivity方法来启动由intent指定的活动
// 由于intent已经被设置为启动AlarmAlertActivity，这行代码的作用就是启动AlarmAlertActivity活动
context.startActivity(intent);
}
}
}

159
src/java/net/micode/notes/ui/DateTimePicker.java
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@ -14,8 +14,10 @@
* limitations under the License.
*/
// 指定类所在的包名
package net.micode.notes.ui;
// 导入所需的Java和Android类
import java.text.DateFormatSymbols;
import java.util.Calendar;
@ -27,11 +29,13 @@ import android.text.format.DateFormat;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.NumberPicker;
// 定义一个名为DateTimePicker的类，它继承自FrameLayout
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;
@ -45,25 +49,27 @@ public class DateTimePicker extends FrameLayout {
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) {
@ -71,41 +77,49 @@ public class DateTimePicker extends FrameLayout {
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() {
@Override
//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));
@ -114,18 +128,22 @@ public class DateTimePicker extends FrameLayout {
}
}
};
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());
@ -143,9 +161,10 @@ public class DateTimePicker extends FrameLayout {
onDateTimeChanged();
}
};
private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() {
@Override
//对AM和PM的监听
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
mIsAm = !mIsAm;
if (mIsAm) {
@ -157,63 +176,66 @@ public class DateTimePicker extends FrameLayout {
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 = (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) {
@ -226,12 +248,14 @@ public class DateTimePicker extends FrameLayout {
mAmPmSpinner.setEnabled(enabled);
mIsEnabled = enabled;
}
//存在疑问！！！！！！！！！！！！！setEnabled的作用
//下面的代码通过原程序的注释已经比较清晰，另外可以通过函数名来判断
//下面的各函数主要是对上面代码引用到的各函数功能的实现
@Override
public boolean isEnabled() {
return mIsEnabled;
}
/**
* Get the current date in millis
*
@ -239,8 +263,8 @@ public class DateTimePicker extends FrameLayout {
*/
public long getCurrentDateInTimeMillis() {
return mDate.getTimeInMillis();
}
}//实现函数——得到当前的秒数
/**
* Set the current date
*
@ -251,8 +275,8 @@ public class DateTimePicker extends FrameLayout {
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
*
@ -269,17 +293,18 @@ public class DateTimePicker extends FrameLayout {
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
*
@ -293,7 +318,7 @@ public class DateTimePicker extends FrameLayout {
updateDateControl();
onDateTimeChanged();
}
/**
* Get current month in the year
*
@ -302,7 +327,7 @@ public class DateTimePicker extends FrameLayout {
public int getCurrentMonth() {
return mDate.get(Calendar.MONTH);
}
/**
* Set current month in the year
*
@ -316,7 +341,7 @@ public class DateTimePicker extends FrameLayout {
updateDateControl();
onDateTimeChanged();
}
/**
* Get current day of the month
*
@ -325,7 +350,7 @@ public class DateTimePicker extends FrameLayout {
public int getCurrentDay() {
return mDate.get(Calendar.DAY_OF_MONTH);
}
/**
* Set current day of the month
*
@ -339,7 +364,7 @@ public class DateTimePicker extends FrameLayout {
updateDateControl();
onDateTimeChanged();
}
/**
* Get current hour in 24 hour mode, in the range (0~23)
* @return The current hour in 24 hour mode
@ -347,7 +372,7 @@ public class DateTimePicker extends FrameLayout {
public int getCurrentHourOfDay() {
return mDate.get(Calendar.HOUR_OF_DAY);
}
private int getCurrentHour() {
if (mIs24HourView){
return getCurrentHourOfDay();
@ -360,7 +385,7 @@ public class DateTimePicker extends FrameLayout {
}
}
}
/**
* Set current hour in 24 hour mode, in the range (0~23)
*
@ -388,7 +413,7 @@ public class DateTimePicker extends FrameLayout {
mHourSpinner.setValue(hourOfDay);
onDateTimeChanged();
}
/**
* Get currentMinute
*
@ -397,7 +422,7 @@ public class DateTimePicker extends FrameLayout {
public int getCurrentMinute() {
return mDate.get(Calendar.MINUTE);
}
/**
* Set current minute
*/
@ -409,14 +434,14 @@ public class DateTimePicker extends FrameLayout {
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.
*
@ -433,7 +458,7 @@ public class DateTimePicker extends FrameLayout {
setCurrentHour(hour);
updateAmPmControl();
}
private void updateDateControl() {
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(mDate.getTimeInMillis());
@ -446,8 +471,8 @@ public class DateTimePicker extends FrameLayout {
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);
@ -455,9 +480,9 @@ public class DateTimePicker extends FrameLayout {
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);
@ -465,9 +490,9 @@ public class DateTimePicker extends FrameLayout {
} else {
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW);
mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW);
}
}// 对与小时的算法
}
/**
* Set the callback that indicates the 'Set' button has been pressed.
* @param callback the callback, if null will do nothing
@ -475,11 +500,11 @@ public class DateTimePicker extends FrameLayout {
public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) {
mOnDateTimeChangedListener = callback;
}
private void onDateTimeChanged() {
if (mOnDateTimeChangedListener != null) {
mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(),
getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute());
}
}
}
}
}

158
src/java/net/micode/notes/ui/DateTimePickerDialog.java
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@ -14,77 +14,89 @@
* 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();
private boolean mIs24HourView;
private OnDateTimeSetListener mOnDateTimeSetListener;
private DateTimePicker mDateTimePicker;
public interface OnDateTimeSetListener {
void OnDateTimeSet(AlertDialog dialog, long date);
}
public DateTimePickerDialog(Context context, long date) {
super(context);
mDateTimePicker = new DateTimePicker(context);
setView(mDateTimePicker);
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);
updateTitle(mDate.getTimeInMillis());
}
});
mDate.setTimeInMillis(date);
mDate.set(Calendar.SECOND, 0);
mDateTimePicker.setCurrentDate(mDate.getTimeInMillis());
setButton(context.getString(R.string.datetime_dialog_ok), this);
setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
set24HourView(DateFormat.is24HourFormat(this.getContext()));
updateTitle(mDate.getTimeInMillis());
}
public void set24HourView(boolean is24HourView) {
mIs24HourView = is24HourView;
}
public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) {
mOnDateTimeSetListener = callBack;
}
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));
}
public void onClick(DialogInterface arg0, int arg1) {
if (mOnDateTimeSetListener != null) {
mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());
}
}
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;
}//将时间日期滚动选择控件实例化
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
}

26
src/java/net/micode/notes/ui/DropdownMenu.java
Unescape View File

@ -15,7 +15,7 @@
*/
package net.micode.notes.ui;
import android.content.Context;
import android.view.Menu;
import android.view.MenuItem;
@ -24,38 +24,42 @@ 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
}

135
src/java/net/micode/notes/ui/FoldersListAdapter.java
Unescape View File

@ -14,67 +14,74 @@
* 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 {
public static final String [] PROJECTION = {
NoteColumns.ID,
NoteColumns.SNIPPET
};
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
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
return new FolderListItem(context);
}
@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);
}
}
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);
}
private class FolderListItem extends LinearLayout {
private TextView mName;
public FolderListItem(Context context) {
super(context);
inflate(context, R.layout.folder_list_item, this);
mName = (TextView) findViewById(R.id.tv_folder_name);
}
public void bind(String name) {
mName.setText(name);
}
}
}
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);
}
}
}

479
src/java/net/micode/notes/ui/NoteEditText.java
Unescape View File

@ -14,212 +14,273 @@
* 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;
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:" ;
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
*/
public interface OnTextViewChangeListener {
/**
* Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens
* and the text is null
*/
void onEditTextDelete(int index, String text);
/**
* Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER}
* happen
*/
void onEditTextEnter(int index, String text);
/**
* Hide or show item option when text change
*/
void onTextChange(int index, boolean hasText);
}
private OnTextViewChangeListener mOnTextViewChangeListener;
public NoteEditText(Context context) {
super(context, null);
mIndex = 0;
}
public void setIndex(int index) {
mIndex = index;
}
public void setOnTextViewChangeListener(OnTextViewChangeListener listener) {
mOnTextViewChangeListener = listener;
}
public NoteEditText(Context context, AttributeSet attrs) {
super(context, attrs, android.R.attr.editTextStyle);
}
public NoteEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
}
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
int x = (int) event.getX();
int y = (int) event.getY();
x -= getTotalPaddingLeft();
y -= getTotalPaddingTop();
x += getScrollX();
y += getScrollY();
Layout layout = getLayout();
int line = layout.getLineForVertical(y);
int off = layout.getOffsetForHorizontal(line, x);
Selection.setSelection(getText(), off);
break;
}
return super.onTouchEvent(event);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_ENTER:
if (mOnTextViewChangeListener != null) {
return false;
}
break;
case KeyEvent.KEYCODE_DEL:
mSelectionStartBeforeDelete = getSelectionStart();
break;
default:
break;
}
return super.onKeyDown(keyCode, event);
}
/**
* @method: onKeyUp
* @description: 处理键盘输入的键。对于delete键和enter键做了异常处理。
* 编辑时会进入，按返回键退出时也会进入
* @date: 2023/12/21 0:28
* @author: zhoukexing
* @param: [keyCode, event]
* @return: boolean
*/
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
switch(keyCode) {
case KeyEvent.KEYCODE_DEL: // delete键的号为67 @zhoukexing 2023/12/21 0:31
if (mOnTextViewChangeListener != null) {
if (0 == mSelectionStartBeforeDelete && mIndex != 0) {
mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString());
return true;
}
} else {
Log.d(TAG, "OnTextViewChangeListener was not seted");
}
break;
case KeyEvent.KEYCODE_ENTER: // enter键的号为66 @zhoukexing 2023/12/21 0:31
if (mOnTextViewChangeListener != null) {
int selectionStart = getSelectionStart();
String text = getText().subSequence(selectionStart, length()).toString();
setText(getText().subSequence(0, selectionStart));
mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text);
} else {
Log.d(TAG, "OnTextViewChangeListener was not seted");
}
break;
default:
break;
}
return super.onKeyUp(keyCode, event);
}
@Override
protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
if (mOnTextViewChangeListener != null) {
if (!focused && TextUtils.isEmpty(getText())) {
mOnTextViewChangeListener.onTextChange(mIndex, false);
} else {
mOnTextViewChangeListener.onTextChange(mIndex, true);
}
}
super.onFocusChanged(focused, direction, previouslyFocusedRect);
}
@Override
protected void onCreateContextMenu(ContextMenu menu) {
if (getText() instanceof Spanned) {
int selStart = getSelectionStart();
int selEnd = getSelectionEnd();
int min = Math.min(selStart, selEnd);
int max = Math.max(selStart, selEnd);
final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class);
if (urls.length == 1) {
int defaultResId = 0;
for(String schema: sSchemaActionResMap.keySet()) {
if(urls[0].getURL().indexOf(schema) >= 0) {
defaultResId = sSchemaActionResMap.get(schema);
break;
}
}
if (defaultResId == 0) {
defaultResId = R.string.note_link_other;
}
menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener(
new OnMenuItemClickListener() {
public boolean onMenuItemClick(MenuItem item) {
// goto a new intent
urls[0].onClick(NoteEditText.this);
return true;
}
});
}
}
super.onCreateContextMenu(menu);
}
}
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，还有邮箱
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，可以看做是一个文本是否被变的标记，英文注释已说明的很清楚
public interface OnTextViewChangeListener {
/**
* Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens
* and the text is null
*/
//处理删除按键时的操作
void onEditTextDelete(int index, String text);
/**
* Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER}
* happen
*/
//处理进入按键时的操作
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 百度了一下是自定义空控件属性，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 construct or 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:
//跟新当前坐标值
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
* 实现过程：如下注释
*/
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
* 实现方式：如下注释
*/
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2种操作
case KeyEvent.KEYCODE_DEL:
if (mOnTextViewChangeListener != null) {
//若是被修改过
if (0 == mSelectionStartBeforeDelete && mIndex != 0) {
//若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2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);
//当{@link KeyEvent#KEYCODE_ENTER}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
* 实现方式：如下注释
* 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())) {
//获取到焦点并且文本不为空
mOnTextViewChangeListener.onTextChange(mIndex, false);
//mOnTextViewChangeListener子函数，置false隐藏事件选项
} else {
mOnTextViewChangeListener.onTextChange(mIndex, true);
//mOnTextViewChangeListener子函数，置true显示事件选项
}
}
//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
* 函数实现：如下注释
*/
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);
}
}

505
src/java/net/micode/notes/ui/NotesListAdapter.java
Unescape View File

@ -14,251 +14,260 @@
* limitations under the License.
*/
package net.micode.notes.ui;
import android.text.TextUtils;
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 android.widget.LinearLayout;
import net.micode.notes.data.Notes;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
public class NotesListAdapter extends CursorAdapter {
private static final String TAG = "NotesListAdapter";
private Context mContext;
/** 键-值对，值为true时，表示被选中 @zhoukexing 2024/1/2 20:50 */
private HashMap<Integer, Boolean> mSelectedIndex;
// private HashMap<Integer, String> mSnippetPosition;
private int mNotesCount;
private boolean mChoiceMode;
// private String mQuery; // 搜索串
public static class AppWidgetAttribute {
public int widgetId;
public int widgetType;
}
public NotesListAdapter(Context context, Cursor cursor) {
super(context, cursor);
mSelectedIndex = new HashMap<Integer, Boolean>();
// mSnippetPosition = new HashMap<Integer, String>();
mContext = context;
mNotesCount = 0;
// mQuery="";
}
// @Override
// public View getView(int position, View convertView, ViewGroup parent) {
// View view = super.getView(position, convertView, parent);
// // 仅显示便签项中包含搜索串的便签
// String snippet = mSnippetPosition.get(position);
// Log.e(TAG, snippet);
// if(!TextUtils.isEmpty(mQuery) && !mSnippetPosition.get(position).contains(mQuery)) {
// view.setVisibility(View.GONE);
// LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(0,1);
// view.setLayoutParams(param);
// }
// return view;
// }
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
return new NotesListItem(context);
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
if (view instanceof NotesListItem) {
NoteItemData itemData = new NoteItemData(context, cursor);
((NotesListItem) view).bind(context, itemData, mChoiceMode,
isSelectedItem(cursor.getPosition()));
}
}
public void setCheckedItem(final int position, final boolean checked) {
mSelectedIndex.put(position, checked);
notifyDataSetChanged();
}
public boolean isInChoiceMode() {
return mChoiceMode;
}
public void setChoiceMode(boolean mode) {
mSelectedIndex.clear();
mChoiceMode = mode;
}
/**
* @method: selectAll
* @description: 传入一个boolean值，
* 通过setCheckedItem来修改mSelectedIndex数据成员，
* 将值都置为传入的参数，
* 达到选中所有项 or 不选所有项的效果。
* @date: 2024/1/3 22:36
* @author: zhoukexing
* @param: [checked]
* @return: void
*/
public void selectAll(boolean checked) {
Cursor cursor = getCursor();
for (int i = 0; i < getCount(); i++) {
if (cursor.moveToPosition(i)) {
if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) {
setCheckedItem(i, checked);
}
}
}
}
public HashSet<Long> getSelectedItemIds() {
HashSet<Long> itemSet = new HashSet<Long>();
for (Integer position : mSelectedIndex.keySet()) {
if (mSelectedIndex.get(position) == true) {
Long id = getItemId(position);
if (id == Notes.ID_ROOT_FOLDER) {
Log.d(TAG, "Wrong item id, should not happen");
} else {
itemSet.add(id);
}
}
}
return itemSet;
}
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);
if (c != null) {
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;
}
public int getSelectedCount() {
Collection<Boolean> values = mSelectedIndex.values();
if (null == values) {
return 0;
}
Iterator<Boolean> iter = values.iterator();
int count = 0;
while (iter.hasNext()) {
if (true == iter.next()) {
count++;
}
}
return count;
}
public int getMNotesCount() {
return mNotesCount;
}
/**
* @method: isAllSelected
* @description: 如果都选中了就返回true，否则返回false
* @date: 2024/1/2 20:47
* @author: zhoukexing
* @param: []
* @return: boolean
*/
public boolean isAllSelected() {
int checkedCount = getSelectedCount();
return (checkedCount != 0 && checkedCount == mNotesCount);
}
// public void setmQuery(String Query) {
// mQuery = Query;
// }
public boolean isSelectedItem(final int position) {
if (null == mSelectedIndex.get(position)) {
return false;
}
return mSelectedIndex.get(position);
}
@Override
protected void onContentChanged() {
super.onContentChanged();
calcNotesCount();
// updateSnippetMap(); // 在数据发生改变时更新 Snippet 到 Position 的映射
}
/**
* @Method changeCursor
* @Date 2024/1/18 15:36
* @param cursor
* @Author lenovo
* @Return void
* @Description 当cursor改变时调用，需要在这里进行一些数据更新工作
*/
@Override
public void changeCursor(Cursor cursor) {
super.changeCursor(cursor);
calcNotesCount();
// updateSnippetMap(); // 在数据发生改变时更新 Snippet 到 Position 的映射
}
// private void updateSnippetMap() {
// mSnippetPosition = new HashMap<Integer, String>();
// for (int i = 0; i < getCount(); i++) {
// Cursor c = (Cursor) getItem(i);
// if (c != null) {
// int position = c.getPosition();
// NoteItemData item = new NoteItemData(mContext, c);
// mSnippetPosition.put(position, item.getSnippet());
// } else {
// Log.e(TAG, "Invalid cursor");
// break;
// }
// }
// }
/**
* @Method calcNotesCount
* @Date 2024/1/18 15:36
* @Author lenovo
* @Return void
* @Description 计算便签的数目
*/
private void calcNotesCount() {
mNotesCount = 0;
for (int i = 0; i < getCount(); i++) {
Cursor c = (Cursor) getItem(i);
if (c != null) {
if (NoteItemData.getNoteType(c) == Notes.TYPE_NOTE) {
mNotesCount++;
}
} else {
Log.e(TAG, "Invalid cursor");
return;
}
}
}
}
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;
/*
* 功能：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
* 函数实现：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
* 函数实现：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
* 函数实现：如下注释
*/
@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
* 函数实现：如下注释
*/
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
* 函数实现：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
* 函数实现：如下注释
*/
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
}
/*
* 函数功能：建立选择项的下标列表
* 函数实现：如下注释
*/
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) {
//原文件不需要添加
Log.d(TAG, "Wrong item id, should not happen");
} else {
itemSet.add(id);
}
//则将id该下标假如选项集合中
}
}
return itemSet;
}
/*
* 函数功能：建立桌面Widget的选项表
* 函数实现：如下注释
*/
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，不再重复
if (c != null) {
//光标位置可用的话就建立新的Widget属性并编辑下标和类型，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
* 函数实现：如下注释
*/
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
* 函数实现：如下注释
*/
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
* 函数实现：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
* 函数实现：如下注释
*/
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
}
}
}

239
src/java/net/micode/notes/ui/NotesListItem.java
Unescape View File

@ -14,126 +14,119 @@
* 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;
/**
* @Package:
* @Class: NotesListItem
* @Author lenovo
* @Date 2024/1/18 15:43
* @Description: 主页面便签项的类
*/
public class NotesListItem extends LinearLayout {
private ImageView mAlert;
private ImageView mTop;
private TextView mTitle;
private TextView mTime;
private TextView mCallName;
private NoteItemData mItemData;
private CheckBox mCheckBox;
public NotesListItem(Context context) {
super(context);
inflate(context, R.layout.note_item, this);
mAlert = (ImageView) findViewById(R.id.iv_alert_icon);
mTop = (ImageView) findViewById(R.id.iv_top_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);
}
public void bind(Context context, NoteItemData data, boolean choiceMode, boolean checked) {
if (choiceMode && data.getType() == Notes.TYPE_NOTE) {
mCheckBox.setVisibility(View.VISIBLE);
mCheckBox.setChecked(checked);
} else {
mCheckBox.setVisibility(View.GONE);
}
mItemData = data;
if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
mCallName.setVisibility(View.GONE);
mAlert.setVisibility(View.VISIBLE);
mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
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()));
if (data.hasAlert()) {
mAlert.setImageResource(R.drawable.clock);
mAlert.setVisibility(View.VISIBLE);
} else {
mAlert.setVisibility(View.GONE);
}
} else {
mCallName.setVisibility(View.GONE);
mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
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);
mAlert.setVisibility(View.VISIBLE);
} else {
mAlert.setVisibility(View.GONE);
}
}
}
mTime.setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate()));
// 设置置顶图标
if(data.getTop() == 1){
mTop.setImageResource(R.drawable.set_top);
mTop.setVisibility(View.VISIBLE);
}
else{
mTop.setVisibility(View.GONE);
}
setBackground(data);
}
private void setBackground(NoteItemData data) {
int id = data.getBgColorId();
if (data.getType() == Notes.TYPE_NOTE) {
if (data.isSingle() || data.isOneFollowingFolder()) {
setBackgroundResource(NoteItemBgResources.getNoteBgSingleRes(id));
} else if (data.isLast()) {
setBackgroundResource(NoteItemBgResources.getNoteBgLastRes(id));
} else if (data.isFirst() || data.isMultiFollowingFolder()) {
setBackgroundResource(NoteItemBgResources.getNoteBgFirstRes(id));
} else {
setBackgroundResource(NoteItemBgResources.getNoteBgNormalRes(id));
}
} else {
setBackgroundResource(NoteItemBgResources.getFolderBgRes());
}
}
public NoteItemData getItemData() {
return mItemData;
}
}
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; //
private NoteItemData mItemData; //标签数据
private CheckBox mCheckBox; //打钩框
/*初始化基本信息*/
public NotesListItem(Context context) {
super(context); //super()它的主要作用是调整调用父类构造函数的顺序
inflate(context, R.layout.note_item, this);//Inflate可用于将一个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); ///格子打钩
} else {
mCheckBox.setVisibility(View.GONE);
}
mItemData = data;
///设置控件属性，一共三种情况，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4种情况，对于4种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()) {//是一个数据并有多个子文件夹
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;
}
}

886
src/java/net/micode/notes/ui/NotesPreferenceActivity.java
Unescape View File

@ -14,375 +14,517 @@
* 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;
public class NotesPreferenceActivity extends PreferenceActivity {
public static final String PREFERENCE_NAME = "notes_preferences";
public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";
public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";
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";
private static final String AUTHORITIES_FILTER_KEY = "authorities";
private PreferenceCategory mAccountCategory;
private GTaskReceiver mReceiver;
private Account[] mOriAccounts;
private boolean mHasAddedAccount;
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
/* using the app icon for navigation */
getActionBar().setDisplayHomeAsUpEnabled(true);
addPreferencesFromResource(R.xml.preferences);
mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);
mReceiver = new GTaskReceiver();
IntentFilter filter = new IntentFilter();
filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME);
registerReceiver(mReceiver, filter);
mOriAccounts = null;
View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);
getListView().addHeaderView(header, null, true);
}
@Override
protected void onResume() {
super.onResume();
// need to set sync account automatically if user has added a new
// account
if (mHasAddedAccount) {
Account[] accounts = getGoogleAccounts();
if (mOriAccounts != null && accounts.length > mOriAccounts.length) {
for (Account accountNew : accounts) {
boolean found = false;
for (Account accountOld : mOriAccounts) {
if (TextUtils.equals(accountOld.name, accountNew.name)) {
found = true;
break;
}
}
if (!found) {
setSyncAccount(accountNew.name);
break;
}
}
}
}
refreshUI();
}
@Override
protected void onDestroy() {
if (mReceiver != null) {
unregisterReceiver(mReceiver);
}
super.onDestroy();
}
private void loadAccountPreference() {
mAccountCategory.removeAll();
Preference accountPref = new Preference(this);
final String defaultAccount = getSyncAccountName(this);
accountPref.setTitle(getString(R.string.preferences_account_title));
accountPref.setSummary(getString(R.string.preferences_account_summary));
accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
public boolean onPreferenceClick(Preference preference) {
if (!GTaskSyncService.isSyncing()) {
if (TextUtils.isEmpty(defaultAccount)) {
// the first time to set account
showSelectAccountAlertDialog();
} else {
// if the account has already been set, we need to promp
// user about the risk
showChangeAccountConfirmAlertDialog();
}
} else {
Toast.makeText(NotesPreferenceActivity.this,
R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT)
.show();
}
return true;
}
});
mAccountCategory.addPreference(accountPref);
}
private void loadSyncButton() {
Button syncButton = (Button) findViewById(R.id.preference_sync_button);
TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
// set button state
if (GTaskSyncService.isSyncing()) {
syncButton.setText(getString(R.string.preferences_button_sync_cancel));
syncButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
GTaskSyncService.cancelSync(NotesPreferenceActivity.this);
}
});
} else {
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)));
// set last sync time
if (GTaskSyncService.isSyncing()) {
lastSyncTimeView.setText(GTaskSyncService.getProgressString());
lastSyncTimeView.setVisibility(View.VISIBLE);
} else {
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);
} else {
lastSyncTimeView.setVisibility(View.GONE);
}
}
}
private void refreshUI() {
loadAccountPreference();
loadSyncButton();
}
private void showSelectAccountAlertDialog() {
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
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));
dialogBuilder.setCustomTitle(titleView);
dialogBuilder.setPositiveButton(null, null);
Account[] accounts = getGoogleAccounts();
String defAccount = getSyncAccountName(this);
mOriAccounts = accounts;
mHasAddedAccount = false;
if (accounts.length > 0) {
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;
}
items[index++] = account.name;
}
dialogBuilder.setSingleChoiceItems(items, checkedItem,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
setSyncAccount(itemMapping[which].toString());
dialog.dismiss();
refreshUI();
}
});
}
View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);
dialogBuilder.setView(addAccountView);
final AlertDialog dialog = dialogBuilder.show();
addAccountView.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
mHasAddedAccount = true;
Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");
intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] {
"gmail-ls"
});
startActivityForResult(intent, -1);
dialog.dismiss();
}
});
}
private void showChangeAccountConfirmAlertDialog() {
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
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));
dialogBuilder.setCustomTitle(titleView);
CharSequence[] menuItemArray = new CharSequence[] {
getString(R.string.preferences_menu_change_account),
getString(R.string.preferences_menu_remove_account),
getString(R.string.preferences_menu_cancel)
};
dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
if (which == 0) {
showSelectAccountAlertDialog();
} else if (which == 1) {
removeSyncAccount();
refreshUI();
}
}
});
dialogBuilder.show();
}
private Account[] getGoogleAccounts() {
AccountManager accountManager = AccountManager.get(this);
return accountManager.getAccountsByType("com.google");
}
private void setSyncAccount(String account) {
if (!getSyncAccountName(this).equals(account)) {
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
if (account != null) {
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account);
} else {
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
}
editor.commit();
// clean up last sync time
setLastSyncTime(this, 0);
// 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();
Toast.makeText(NotesPreferenceActivity.this,
getString(R.string.preferences_toast_success_set_accout, account),
Toast.LENGTH_SHORT).show();
}
}
private void removeSyncAccount() {
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) {
editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME);
}
if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) {
editor.remove(PREFERENCE_LAST_SYNC_TIME);
}
editor.commit();
// 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();
}
public static String getSyncAccountName(Context context) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
}
public static void setLastSyncTime(Context context, long time) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
editor.putLong(PREFERENCE_LAST_SYNC_TIME, time);
editor.commit();
}
public static long getLastSyncTime(Context context) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0);
}
private class GTaskReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
refreshUI();
if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {
TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
syncStatus.setText(intent
.getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
}
}
}
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
Intent intent = new Intent(this, NotesListActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
return true;
default:
return false;
}
}
}
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;
/*
*该类功能：NotesPreferenceActivity，在小米便签中主要实现的是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
*函数实现：如下注释
*/
protected void onCreate(Bundle icicle) {
//先执行父类的创建函数
super.onCreate(icicle);
/* 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;
View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);
//获取listvivew，ListView的作用: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
* 函数实现：如下注释
*/
protected void onResume() {
//先执行父类 的交互实现
super.onResume();
// 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();
//刷新标签界面
}
@Override
/*
* 函数功能：销毁一个activity
* 函数实现：如下注释
*/
protected void onDestroy() {
if (mReceiver != null) {
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
* 函数实现：如下注释
*/
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)) {
// the first time to set account
//若是第一次建立账户显示选择账户提示对话框
showSelectAccountAlertDialog();
} else {
// if the account has already been set, we need to promp
// user about the risk
//若是已经建立则显示修改对话框并进行修改操作
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
*函数实现：如下注释
*/
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 {
syncButton.setText(getString(R.string.preferences_button_sync_immediately));
syncButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
GTaskSyncService.startSync(NotesPreferenceActivity.this);
}
});
//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.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()) {
//若是在同步的情况下
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);
//则根据最后同步时间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
*函数实现：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
* 函数实现：如下注释
*/
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
* 函数实现：如下注释
*/
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) {
//删除账户并且跟新便签界面
removeSyncAccount();
refreshUI();
}
}
});
dialogBuilder.show();
//显示对话框
}
/*
*函数功能：获取谷歌账户
*函数实现：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
* 函数实现：如下注释：
*/
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, "");
}
//将该账号加入到首选项中
editor.commit();
//提交修改的数据
setLastSyncTime(this, 0);
//将最后同步时间清零
// 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
* 函数实现：如下注释：
*/
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)) {
editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME);
//假如当前首选项中有账户就删除
}
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
* 函数实现：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：设置最终同步的时间
* 函数实现：如下注释
*/
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
* 函数实现：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
* 函数实现：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Intent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));
//通过获取的数据在设置系统的状态
}
}
}
/*
* 函数功能：处理菜单的选项
* 函数实现：如下注释
* 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;
//在主页情况下在创建连接组件intent，发出清空的信号并开始一个相应的activity
default:
return false;
}
}
}

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