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chenjianan

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chenjianan 7 months ago
parent e5f863580e
commit c8d177a5b6
13 changed files with 1710 additions and 1659 deletions
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161
src/java/net/micode/notes/ui/AlarmAlertActivity.java
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@ -14,6 +14,7 @@
* limitations under the License. * limitations under the License.
*/ */
// 导入必要的类和接口
package net.micode.notes.ui; package net.micode.notes.ui;
import android.app.Activity; import android.app.Activity;
@ -39,147 +40,171 @@ import net.micode.notes.tool.DataUtils;
import java.io.IOException; import java.io.IOException;
/** // AlarmAlertActivity类，继承自Activity，实现OnClickListener和OnDismissListener接口
* AlarmAlertActivity 类用于显示闹钟提醒的对话框，并播放提醒音。
*/
public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener { public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener {
private long mNoteId; // 便签的ID private long mNoteId; //文本在数据库存储中的ID号
private String mSnippet; // 便签的摘要信息 private String mSnippet; //闹钟提示时出现的文本片段
private static final int SNIPPET_PREW_MAX_LEN = 60; // 摘要信息的最大长度 private static final int SNIPPET_PREW_MAX_LEN = 60;
MediaPlayer mPlayer; // 用于播放提醒音的MediaPlayer MediaPlayer mPlayer;
@Override @Override
/**
* 创建Activity时的初始化操作。
* @param savedInstanceState 保存的实例状态
*/
protected void onCreate(Bundle savedInstanceState) { protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE); // 不显示标题栏 //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(); final Window win = getWindow();
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); // 锁屏时显示 win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
// 如果屏幕未点亮，则设置相关标志以确保屏幕点亮并显示对话框
if (!isScreenOn()) { if (!isScreenOn()) {
win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON | //保持窗体点亮
WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON | | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR); //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(); Intent intent = getIntent();
try { try {
mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1)); // 获取便签ID mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId); // 获取便签摘要 mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
// 如果摘要过长，则截取并添加省略号 //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, mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0,
SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info) SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
: mSnippet; : mSnippet;
//判断标签片段是否达到符合长度
} catch (IllegalArgumentException e) { } catch (IllegalArgumentException e) {
e.printStackTrace(); e.printStackTrace();
return; return;
} }
/*
try
{
// 代码区
}
catch(Exception e)
{
// 异常处理
}
代码区如果有错误，就会返回所写异常的处理。*/
mPlayer = new MediaPlayer(); mPlayer = new MediaPlayer();
// 如果便签存在于数据库中，则显示对话框并播放提醒音
if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) { if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
showActionDialog(); showActionDialog();
//弹出对话框
playAlarmSound(); playAlarmSound();
//闹钟提示音激发
} else { } else {
finish(); // 如果不存在，则结束Activity finish();
//完成闹钟动作
} }
} }
/**
* 检查屏幕是否已点亮。
* @return 屏幕是否已点亮
*/
private boolean isScreenOn() { private boolean isScreenOn() {
//判断屏幕是否锁屏，调用系统函数判断，最后返回值是布尔类型
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE); PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
return pm.isScreenOn(); return pm.isScreenOn();
} }
/**
* 播放闹钟提醒音。
*/
private void playAlarmSound() { private void playAlarmSound() {
Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM); // 获取默认闹钟铃声 //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(), int silentModeStreams = Settings.System.getInt(getContentResolver(),
Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0); // 获取静音模式影响的流类型 Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) { if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) {
mPlayer.setAudioStreamType(silentModeStreams); // 设置音频流类型 mPlayer.setAudioStreamType(silentModeStreams);
} else { } else {
mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM); mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
} }
try { try {
mPlayer.setDataSource(this, url); // 设置播放数据源 mPlayer.setDataSource(this, url);
mPlayer.prepare(); // 准备播放 //方法：setDataSource(Context context, Uri uri)
mPlayer.setLooping(true); // 设置循环播放 //解释：无返回值，设置多媒体数据来源【根据 Uri】
mPlayer.start(); // 开始播放 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) { } catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace(); e.printStackTrace();
//e.printStackTrace()函数功能是抛出异常， 还将显示出更深的调用信息
//System.out.println(e)，这个方法打印出异常，并且输出在哪里出现的异常
} catch (SecurityException e) { } catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace(); e.printStackTrace();
} catch (IllegalStateException e) { } catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace(); e.printStackTrace();
} catch (IOException e) { } catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace(); e.printStackTrace();
} }
} }
/**
* 显示闹钟提醒对话框。
*/
private void showActionDialog() { private void showActionDialog() {
AlertDialog.Builder dialog = new AlertDialog.Builder(this); AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setTitle(R.string.app_name); // 设置对话框标题 //AlertDialog的构造方法全部是Protected的
dialog.setMessage(mSnippet); // 设置对话框消息 //所以不能直接通过new一个AlertDialog来创建出一个AlertDialog。
dialog.setPositiveButton(R.string.notealert_ok, this); // 设置确定按钮 //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()) { if (isScreenOn()) {
dialog.setNegativeButton(R.string.notealert_enter, this); // 设置取消按钮 dialog.setNegativeButton(R.string.notealert_enter, this);
} }//对话框添加"No"按钮
dialog.show().setOnDismissListener(this); // 显示对话框并设置消失监听器 dialog.show().setOnDismissListener(this);
} }
/**
* 对话框按钮点击事件处理。
* @param dialog 对话框
* @param which 被点击的按钮
*/
public void onClick(DialogInterface dialog, int which) { public void onClick(DialogInterface dialog, int which) {
switch (which) { switch (which) {
//用which来选择click后下一步的操作
case DialogInterface.BUTTON_NEGATIVE: case DialogInterface.BUTTON_NEGATIVE:
//这是取消操作
Intent intent = new Intent(this, NoteEditActivity.class); Intent intent = new Intent(this, NoteEditActivity.class);
//实现两个类间的数据传输
intent.setAction(Intent.ACTION_VIEW); intent.setAction(Intent.ACTION_VIEW);
intent.putExtra(Intent.EXTRA_UID, mNoteId); // 传递便签ID //设置动作属性
startActivity(intent); // 启动便签编辑Activity 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; break;
default: default:
//这是确定操作
break; break;
} }
} }
/**
* 对话框消失时的处理。
* @param dialog 对话框
*/
public void onDismiss(DialogInterface dialog) { public void onDismiss(DialogInterface dialog) {
stopAlarmSound(); // 停止播放提醒音 //忽略
finish(); // 结束Activity stopAlarmSound();
//停止闹钟声音
finish();
//完成该动作
} }
/**
* 停止播放提醒音。
*/
private void stopAlarmSound() { private void stopAlarmSound() {
if (mPlayer != null) { if (mPlayer != null) {
mPlayer.stop(); // 停止播放 mPlayer.stop();
mPlayer.release(); // 释放资源 //停止播放
mPlayer = null; // 清空MediaPlayer对象 mPlayer.release();
//释放MediaPlayer对象
mPlayer = null;
} }
} }
} }

55
src/java/net/micode/notes/ui/AlarmInitReceiver.java
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@ -27,58 +27,63 @@ import android.database.Cursor;
import net.micode.notes.data.Notes; import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.data.Notes.NoteColumns;
/**
* 当应用启动时，AlarmInitReceiver 会初始化所有未触发的闹钟。
*/
public class AlarmInitReceiver extends BroadcastReceiver { public class AlarmInitReceiver extends BroadcastReceiver {
// 查询数据库时需要的列名 // 定义查询数据库时要获取的列
private static final String [] PROJECTION = new String [] { private static final String [] PROJECTION = new String [] {
NoteColumns.ID, // 便签ID NoteColumns.ID, // 笔记的ID
NoteColumns.ALERTED_DATE // 闹钟提醒时间 NoteColumns.ALERTED_DATE // 笔记的提醒日期
}; };
// 列索引，方便获取数据 // 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_ID = 0;
private static final int COLUMN_ALERTED_DATE = 1; private static final int COLUMN_ALERTED_DATE = 1;
/**
* 当接收到广播时，初始化所有未触发的闹钟。
* @param context 上下文
* @param intent 接收到的意图
*/
@Override @Override
public void onReceive(Context context, Intent intent) { public void onReceive(Context context, Intent intent) {
// 获取当前时间 long currentDate = System.currentTimeMillis(); // 获取当前的系统时间（毫秒）
long currentDate = System.currentTimeMillis();
// 查询所有未触发的闹钟 // 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, Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
PROJECTION, PROJECTION,
NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE, NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,
new String[] { String.valueOf(currentDate) }, new String[] { String.valueOf(currentDate) }, // 查询参数，这里只有当前日期
null); null); // 不需要排序
// 检查Cursor是否为null
if (c != null) { if (c != null) {
// 如果有未触发的闹钟 // 如果Cursor不为空，移动到第一条记录
if (c.moveToFirst()) { if (c.moveToFirst()) {
// 开始遍历Cursor中的所有记录
do { do {
// 获取闹钟提醒时间和便签ID // 获取当前笔记的提醒日期
long alertDate = c.getLong(COLUMN_ALERTED_DATE); 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); 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))); sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));
// 创建PendingIntent // 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); PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);
// 获取AlarmManager服务 // 获取AlarmManager服务
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); 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);
// 设置闹钟 } while (c.moveToNext()); // 移动到下一条记录，继续循环
alarmManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
} while (c.moveToNext()); // 继续查询下一个闹钟
} }
c.close(); // 关闭游标 // 关闭Cursor
c.close();
} }
} }
} }

30
src/java/net/micode/notes/ui/AlarmReceiver.java
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@ -14,28 +14,30 @@
* limitations under the License. * limitations under the License.
*/ */
// 指定类所在的包名
package net.micode.notes.ui; package net.micode.notes.ui;
import android.content.BroadcastReceiver; // 导入所需的类
import android.content.Context; import android.content.BroadcastReceiver; // 广播接收器基类
import android.content.Intent; 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
* 当闹钟时间到时，AlarmReceiver 会启动闹钟提醒界面。
*/
public class AlarmReceiver extends BroadcastReceiver { public class AlarmReceiver extends BroadcastReceiver {
/**
* 当接收到闹钟触发的广播时，启动闹钟提醒界面。 // 重写onReceive方法，当接收到广播时调用此方法
* @param context 上下文
* @param intent 接收到的意图
*/
@Override @Override
public void onReceive(Context context, Intent intent) { public void onReceive(Context context, Intent intent) {
// 设置意图的目标类为闹钟提醒界面 // 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); intent.setClass(context, AlarmAlertActivity.class);
// 添加标志，表示启动一个新的任务
// 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); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
// 启动闹钟提醒界面
// 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); context.startActivity(intent);
} }
} }

229
src/java/net/micode/notes/ui/DateTimePicker.java
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@ -14,35 +14,31 @@
* limitations under the License. * limitations under the License.
*/ */
// 指定类所在的包名
package net.micode.notes.ui; package net.micode.notes.ui;
// 导入所需的Java和Android类
import java.text.DateFormatSymbols; import java.text.DateFormatSymbols;
import java.util.Calendar; import java.util.Calendar;
import net.micode.notes.R; import net.micode.notes.R;
import android.content.Context; import android.content.Context;
import android.text.format.DateFormat; import android.text.format.DateFormat;
import android.view.View; import android.view.View;
import android.widget.FrameLayout; import android.widget.FrameLayout;
import android.widget.NumberPicker; import android.widget.NumberPicker;
// 定义一个名为DateTimePicker的类，它继承自FrameLayout
/**
* DateTimePicker 类用于创建日期和时间选择器。
*/
public class DateTimePicker extends FrameLayout { public class DateTimePicker extends FrameLayout {
//FrameLayout是布局模板之一
// 默认使能状态 //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 boolean DEFAULT_ENABLE_STATE = true;
// 12小时制和24小时制的小时数
private static final int HOURS_IN_HALF_DAY = 12; private static final int HOURS_IN_HALF_DAY = 12;
private static final int HOURS_IN_ALL_DAY = 24; private static final int HOURS_IN_ALL_DAY = 24;
// 一周的天数
private static final int DAYS_IN_ALL_WEEK = 7; private static final int DAYS_IN_ALL_WEEK = 7;
// 日期和时间选择器的最小和最大值
private static final int DATE_SPINNER_MIN_VAL = 0; private static final int DATE_SPINNER_MIN_VAL = 0;
private static final int DATE_SPINNER_MAX_VAL = DAYS_IN_ALL_WEEK - 1; private static final int DATE_SPINNER_MAX_VAL = DAYS_IN_ALL_WEEK - 1;
private static final int HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW = 0; private static final int HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW = 0;
@ -53,82 +49,77 @@ public class DateTimePicker extends FrameLayout {
private static final int MINUT_SPINNER_MAX_VAL = 59; private static final int MINUT_SPINNER_MAX_VAL = 59;
private static final int AMPM_SPINNER_MIN_VAL = 0; private static final int AMPM_SPINNER_MIN_VAL = 0;
private static final int AMPM_SPINNER_MAX_VAL = 1; private static final int AMPM_SPINNER_MAX_VAL = 1;
//初始化控件
// 日期选择器
private final NumberPicker mDateSpinner; private final NumberPicker mDateSpinner;
// 小时选择器
private final NumberPicker mHourSpinner; private final NumberPicker mHourSpinner;
// 分钟选择器
private final NumberPicker mMinuteSpinner; private final NumberPicker mMinuteSpinner;
// AM/PM选择器
private final NumberPicker mAmPmSpinner; private final NumberPicker mAmPmSpinner;
// 当前日期 //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; private Calendar mDate;
//定义了Calendar类型的变量mDate，用于操作时间
// 日期显示值
private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK]; private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];
// 是否为上午
private boolean mIsAm; private boolean mIsAm;
// 是否为24小时制
private boolean mIs24HourView; private boolean mIs24HourView;
// 是否使能
private boolean mIsEnabled = DEFAULT_ENABLE_STATE; private boolean mIsEnabled = DEFAULT_ENABLE_STATE;
// 初始化标志
private boolean mInitialising; private boolean mInitialising;
// 日期时间改变监听器
private OnDateTimeChangedListener mOnDateTimeChangedListener; private OnDateTimeChangedListener mOnDateTimeChangedListener;
// 日期改变监听器
private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() { private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() {
@Override @Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) { public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
// 更新日期
mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal); mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal);
updateDateControl(); updateDateControl();
onDateTimeChanged(); 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
// 小时改变监听器
private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() { 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) { public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
// 更新小时
boolean isDateChanged = false; boolean isDateChanged = false;
Calendar cal = Calendar.getInstance(); Calendar cal = Calendar.getInstance();
//声明一个Calendar的变量cal，便于后续的操作
if (!mIs24HourView) { if (!mIs24HourView) {
if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) { if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) {
cal.setTimeInMillis(mDate.getTimeInMillis()); cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, 1); cal.add(Calendar.DAY_OF_YEAR, 1);
isDateChanged = true; 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) { } else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
cal.setTimeInMillis(mDate.getTimeInMillis()); cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, -1); cal.add(Calendar.DAY_OF_YEAR, -1);
isDateChanged = true; 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 || if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY ||
oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) { oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
mIsAm = !mIsAm; mIsAm = !mIsAm;
updateAmPmControl(); 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 { } else {
if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) { if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) {
cal.setTimeInMillis(mDate.getTimeInMillis()); cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, 1); cal.add(Calendar.DAY_OF_YEAR, 1);
isDateChanged = true; 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) { } else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) {
cal.setTimeInMillis(mDate.getTimeInMillis()); cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, -1); cal.add(Calendar.DAY_OF_YEAR, -1);
isDateChanged = true; 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); 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); mDate.set(Calendar.HOUR_OF_DAY, newHour);
//通过set函数将新的Hour值传给mDate
onDateTimeChanged(); onDateTimeChanged();
if (isDateChanged) { if (isDateChanged) {
setCurrentYear(cal.get(Calendar.YEAR)); setCurrentYear(cal.get(Calendar.YEAR));
@ -138,19 +129,21 @@ public class DateTimePicker extends FrameLayout {
} }
}; };
// 分钟改变监听器
private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() { private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() {
@Override @Override
//这里是对 分钟（Minute）改变的监听
public void onValueChange(NumberPicker picker, int oldVal, int newVal) { public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
// 更新分钟
int minValue = mMinuteSpinner.getMinValue(); int minValue = mMinuteSpinner.getMinValue();
int maxValue = mMinuteSpinner.getMaxValue(); int maxValue = mMinuteSpinner.getMaxValue();
int offset = 0; int offset = 0;
//设置offset，作为小时改变的一个记录数据
if (oldVal == maxValue && newVal == minValue) { if (oldVal == maxValue && newVal == minValue) {
offset += 1; offset += 1;
} else if (oldVal == minValue && newVal == maxValue) { } else if (oldVal == minValue && newVal == maxValue) {
offset -= 1; 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) { if (offset != 0) {
mDate.add(Calendar.HOUR_OF_DAY, offset); mDate.add(Calendar.HOUR_OF_DAY, offset);
mHourSpinner.setValue(getCurrentHour()); mHourSpinner.setValue(getCurrentHour());
@ -169,11 +162,10 @@ public class DateTimePicker extends FrameLayout {
} }
}; };
// AM/PM改变监听器
private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() { 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) { public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
// 更新AM/PM
mIsAm = !mIsAm; mIsAm = !mIsAm;
if (mIsAm) { if (mIsAm) {
mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY); mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY);
@ -185,44 +177,29 @@ public class DateTimePicker extends FrameLayout {
} }
}; };
/**
* 日期时间改变监听器接口。
*/
public interface OnDateTimeChangedListener { public interface OnDateTimeChangedListener {
void onDateTimeChanged(DateTimePicker view, int year, int month, void onDateTimeChanged(DateTimePicker view, int year, int month,
int dayOfMonth, int hourOfDay, int minute); int dayOfMonth, int hourOfDay, int minute);
} }
/**
* 构造函数。
* @param context 上下文
*/
public DateTimePicker(Context context) { public DateTimePicker(Context context) {
this(context, System.currentTimeMillis()); this(context, System.currentTimeMillis());
} }//通过对数据库的访问，获取当前的系统时间
/**
* 构造函数。
* @param context 上下文
* @param date 当前日期
*/
public DateTimePicker(Context context, long date) { public DateTimePicker(Context context, long date) {
this(context, date, DateFormat.is24HourFormat(context)); 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
/**
* 构造函数。
* @param context 上下文
* @param date 当前日期
* @param is24HourView 是否为24小时制
*/
public DateTimePicker(Context context, long date, boolean is24HourView) { public DateTimePicker(Context context, long date, boolean is24HourView) {
super(context); super(context);
//获取系统时间
mDate = Calendar.getInstance(); mDate = Calendar.getInstance();
mInitialising = true; mInitialising = true;
mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY; mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY;
inflate(context, R.layout.datetime_picker, this); 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 = (NumberPicker) findViewById(R.id.date);
mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL); mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL);
mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL); mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL);
@ -230,13 +207,12 @@ public class DateTimePicker extends FrameLayout {
mHourSpinner = (NumberPicker) findViewById(R.id.hour); mHourSpinner = (NumberPicker) findViewById(R.id.hour);
mHourSpinner.setOnValueChangedListener(mOnHourChangedListener); mHourSpinner.setOnValueChangedListener(mOnHourChangedListener);
mMinuteSpinner = (NumberPicker) findViewById(R.id.minute); mMinuteSpinner = (NumberPicker) findViewById(R.id.minute);
mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL); mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL);
mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL); mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL);
mMinuteSpinner.setOnLongPressUpdateInterval(100); mMinuteSpinner.setOnLongPressUpdateInterval(100);
mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener); mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener);
// AM/PM选择器的字符串数组
String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings(); String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings();
mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm); mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm);
mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL); mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL);
@ -244,28 +220,22 @@ public class DateTimePicker extends FrameLayout {
mAmPmSpinner.setDisplayedValues(stringsForAmPm); mAmPmSpinner.setDisplayedValues(stringsForAmPm);
mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener); mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);
// 更新控件到初始状态 // update controls to initial state
updateDateControl(); updateDateControl();
updateHourControl(); updateHourControl();
updateAmPmControl(); updateAmPmControl();
// 设置24小时制
set24HourView(is24HourView); set24HourView(is24HourView);
// 设置当前日期 // set to current time
setCurrentDate(date); setCurrentDate(date);
// 设置使能状态
setEnabled(isEnabled()); setEnabled(isEnabled());
// 设置内容描述 // set the content descriptions
mInitialising = false; mInitialising = false;
} }
/**
* 设置使能状态。
* @param enabled 是否使能
*/
@Override @Override
public void setEnabled(boolean enabled) { public void setEnabled(boolean enabled) {
if (mIsEnabled == enabled) { if (mIsEnabled == enabled) {
@ -278,42 +248,43 @@ public class DateTimePicker extends FrameLayout {
mAmPmSpinner.setEnabled(enabled); mAmPmSpinner.setEnabled(enabled);
mIsEnabled = 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
* 获取使能状态。 //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
* @return 是否使能
*/
@Override @Override
public boolean isEnabled() { public boolean isEnabled() {
return mIsEnabled; return mIsEnabled;
} }
/** /**
* 获取当前日期的时间戳。 * Get the current date in millis
* @return 当前日期的时间戳 *
* @return the current date in millis
*/ */
public long getCurrentDateInTimeMillis() { public long getCurrentDateInTimeMillis() {
return mDate.getTimeInMillis(); return mDate.getTimeInMillis();
} }//实现函数——得到当前的秒数
/** /**
* 设置当前日期。 * Set the current date
* @param date 当前日期的时间戳 *
* @param date The current date in millis
*/ */
public void setCurrentDate(long date) { public void setCurrentDate(long date) {
Calendar cal = Calendar.getInstance(); Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(date); cal.setTimeInMillis(date);
setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), 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)); 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
/** /**
* 设置当前日期。 * Set the current date
* @param year 当前年份 *
* @param month 当前月份 * @param year The current year
* @param dayOfMonth 当前日期 * @param month The current month
* @param hourOfDay 当前小时 * @param dayOfMonth The current dayOfMonth
* @param minute 当前分钟 * @param hourOfDay The current hourOfDay
* @param minute The current minute
*/ */
public void setCurrentDate(int year, int month, public void setCurrentDate(int year, int month,
int dayOfMonth, int hourOfDay, int minute) { int dayOfMonth, int hourOfDay, int minute) {
@ -322,19 +293,22 @@ public class DateTimePicker extends FrameLayout {
setCurrentDay(dayOfMonth); setCurrentDay(dayOfMonth);
setCurrentHour(hourOfDay); setCurrentHour(hourOfDay);
setCurrentMinute(minute); setCurrentMinute(minute);
} }//实现函数功能——设置当前的时间，参数是各详细的变量
/** /**
* 获取当前年份。 * Get current year
* @return 当前年份 *
* @return The current year
*/ */
//下面是得到year、month、day等值
public int getCurrentYear() { public int getCurrentYear() {
return mDate.get(Calendar.YEAR); return mDate.get(Calendar.YEAR);
} }
/** /**
* 设置当前年份。 * Set current year
* @param year 当前年份 *
* @param year The current year
*/ */
public void setCurrentYear(int year) { public void setCurrentYear(int year) {
if (!mInitialising && year == getCurrentYear()) { if (!mInitialising && year == getCurrentYear()) {
@ -346,16 +320,18 @@ public class DateTimePicker extends FrameLayout {
} }
/** /**
* 获取当前月份。 * Get current month in the year
* @return 当前月份 *
* @return The current month in the year
*/ */
public int getCurrentMonth() { public int getCurrentMonth() {
return mDate.get(Calendar.MONTH); return mDate.get(Calendar.MONTH);
} }
/** /**
* 设置当前月份。 * Set current month in the year
* @param month 当前月份 *
* @param month The month in the year
*/ */
public void setCurrentMonth(int month) { public void setCurrentMonth(int month) {
if (!mInitialising && month == getCurrentMonth()) { if (!mInitialising && month == getCurrentMonth()) {
@ -367,16 +343,18 @@ public class DateTimePicker extends FrameLayout {
} }
/** /**
* 获取当前日期。 * Get current day of the month
* @return 当前日期 *
* @return The day of the month
*/ */
public int getCurrentDay() { public int getCurrentDay() {
return mDate.get(Calendar.DAY_OF_MONTH); return mDate.get(Calendar.DAY_OF_MONTH);
} }
/** /**
* 设置当前日期。 * Set current day of the month
* @param dayOfMonth 当前日期 *
* @param dayOfMonth The day of the month
*/ */
public void setCurrentDay(int dayOfMonth) { public void setCurrentDay(int dayOfMonth) {
if (!mInitialising && dayOfMonth == getCurrentDay()) { if (!mInitialising && dayOfMonth == getCurrentDay()) {
@ -388,19 +366,15 @@ public class DateTimePicker extends FrameLayout {
} }
/** /**
* 获取当前小时（24小时制）。 * Get current hour in 24 hour mode, in the range (0~23)
* @return 当前小时（24小时制） * @return The current hour in 24 hour mode
*/ */
public int getCurrentHourOfDay() { public int getCurrentHourOfDay() {
return mDate.get(Calendar.HOUR_OF_DAY); return mDate.get(Calendar.HOUR_OF_DAY);
} }
/**
* 获取当前小时（12小时制或24小时制）。
* @return 当前小时
*/
private int getCurrentHour() { private int getCurrentHour() {
if (mIs24HourView) { if (mIs24HourView){
return getCurrentHourOfDay(); return getCurrentHourOfDay();
} else { } else {
int hour = getCurrentHourOfDay(); int hour = getCurrentHourOfDay();
@ -413,8 +387,9 @@ public class DateTimePicker extends FrameLayout {
} }
/** /**
* 设置当前小时（24小时制）。 * Set current hour in 24 hour mode, in the range (0~23)
* @param hourOfDay 当前小时（24小时制） *
* @param hourOfDay
*/ */
public void setCurrentHour(int hourOfDay) { public void setCurrentHour(int hourOfDay) {
if (!mInitialising && hourOfDay == getCurrentHourOfDay()) { if (!mInitialising && hourOfDay == getCurrentHourOfDay()) {
@ -440,16 +415,16 @@ public class DateTimePicker extends FrameLayout {
} }
/** /**
* 获取当前分钟。 * Get currentMinute
* @return 当前分钟 *
* @return The Current Minute
*/ */
public int getCurrentMinute() { public int getCurrentMinute() {
return mDate.get(Calendar.MINUTE); return mDate.get(Calendar.MINUTE);
} }
/** /**
* 设置当前分钟。 * Set current minute
* @param minute 当前分钟
*/ */
public void setCurrentMinute(int minute) { public void setCurrentMinute(int minute) {
if (!mInitialising && minute == getCurrentMinute()) { if (!mInitialising && minute == getCurrentMinute()) {
@ -461,16 +436,16 @@ public class DateTimePicker extends FrameLayout {
} }
/** /**
* 获取是否为24小时制。 * @return true if this is in 24 hour view else false.
* @return 是否为24小时制
*/ */
public boolean is24HourView() { public boolean is24HourView () {
return mIs24HourView; return mIs24HourView;
} }
/** /**
* 设置是否为24小时制。 * Set whether in 24 hour or AM/PM mode.
* @param is24HourView 是否为24小时制 *
* @param is24HourView True for 24 hour mode. False for AM/PM mode.
*/ */
public void set24HourView(boolean is24HourView) { public void set24HourView(boolean is24HourView) {
if (mIs24HourView == is24HourView) { if (mIs24HourView == is24HourView) {
@ -484,9 +459,6 @@ public class DateTimePicker extends FrameLayout {
updateAmPmControl(); updateAmPmControl();
} }
/**
* 更新日期控件。
*/
private void updateDateControl() { private void updateDateControl() {
Calendar cal = Calendar.getInstance(); Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(mDate.getTimeInMillis()); cal.setTimeInMillis(mDate.getTimeInMillis());
@ -499,11 +471,8 @@ public class DateTimePicker extends FrameLayout {
mDateSpinner.setDisplayedValues(mDateDisplayValues); mDateSpinner.setDisplayedValues(mDateDisplayValues);
mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2); mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2);
mDateSpinner.invalidate(); mDateSpinner.invalidate();
} }// 对于星期几的算法
/**
* 更新AM/PM控件。
*/
private void updateAmPmControl() { private void updateAmPmControl() {
if (mIs24HourView) { if (mIs24HourView) {
mAmPmSpinner.setVisibility(View.GONE); mAmPmSpinner.setVisibility(View.GONE);
@ -511,12 +480,9 @@ public class DateTimePicker extends FrameLayout {
int index = mIsAm ? Calendar.AM : Calendar.PM; int index = mIsAm ? Calendar.AM : Calendar.PM;
mAmPmSpinner.setValue(index); mAmPmSpinner.setValue(index);
mAmPmSpinner.setVisibility(View.VISIBLE); mAmPmSpinner.setVisibility(View.VISIBLE);
} }// 对于上下午操作的算法
} }
/**
* 更新小时控件。
*/
private void updateHourControl() { private void updateHourControl() {
if (mIs24HourView) { if (mIs24HourView) {
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW); mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW);
@ -524,20 +490,17 @@ public class DateTimePicker extends FrameLayout {
} else { } else {
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW); mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW);
mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW); mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW);
} }// 对与小时的算法
} }
/** /**
* 设置日期时间改变监听器。 * Set the callback that indicates the 'Set' button has been pressed.
* @param callback 日期时间改变监听器 * @param callback the callback, if null will do nothing
*/ */
public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) { public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) {
mOnDateTimeChangedListener = callback; mOnDateTimeChangedListener = callback;
} }
/**
* 通知日期时间改变。
*/
private void onDateTimeChanged() { private void onDateTimeChanged() {
if (mOnDateTimeChangedListener != null) { if (mOnDateTimeChangedListener != null) {
mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(), mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(),

181
src/java/net/micode/notes/ui/DateTimePickerDialog.java
Unescape View File

@ -14,122 +14,89 @@
* limitations under the License. * limitations under the License.
*/ */
package net.micode.notes.ui; package net.micode.notes.ui;
import java.util.Calendar; import java.util.Calendar;
import net.micode.notes.R; import net.micode.notes.R;
import net.micode.notes.ui.DateTimePicker; import net.micode.notes.ui.DateTimePicker;
import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener; import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener;
import android.app.AlertDialog; import android.app.AlertDialog;
import android.content.Context; import android.content.Context;
import android.content.DialogInterface; import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener; import android.content.DialogInterface.OnClickListener;
import android.text.format.DateFormat; import android.text.format.DateFormat;
import android.text.format.DateUtils; import android.text.format.DateUtils;
/** public class DateTimePickerDialog extends AlertDialog implements OnClickListener {
* DateTimePickerDialog 类用于创建日期和时间选择对话框。
*/
public class DateTimePickerDialog extends AlertDialog implements OnClickListener {
// 当前日期 private Calendar mDate = Calendar.getInstance();
private Calendar mDate = Calendar.getInstance(); //创建一个Calendar类型的变量 mDate，方便时间的操作
// 是否为24小时制 private boolean mIs24HourView;
private boolean mIs24HourView; private OnDateTimeSetListener mOnDateTimeSetListener;
// 日期时间设置监听器 //声明一个时间日期滚动选择控件 mOnDateTimeSetListener
private OnDateTimeSetListener mOnDateTimeSetListener; private DateTimePicker mDateTimePicker;
// 日期时间选择器 //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。
private DateTimePicker mDateTimePicker; //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 {
* 日期时间设置监听器接口。 void OnDateTimeSet(AlertDialog dialog, long date);
*/ }
public interface OnDateTimeSetListener {
void OnDateTimeSet(AlertDialog dialog, long date);
}
/** public DateTimePickerDialog(Context context, long date) {
* 构造函数。 //对该界面对话框的实例化
* @param context 上下文 super(context);
* @param date 当前日期的时间戳 //对数据库的操作
*/ mDateTimePicker = new DateTimePicker(context);
public DateTimePickerDialog(Context context, long date) { setView(mDateTimePicker);
super(context); //添加一个子视图
// 创建日期时间选择器 mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() {
mDateTimePicker = new DateTimePicker(context); public void onDateTimeChanged(DateTimePicker view, int year, int month,
// 设置对话框视图 int dayOfMonth, int hourOfDay, int minute) {
setView(mDateTimePicker); mDate.set(Calendar.YEAR, year);
// 设置日期时间改变监听器 mDate.set(Calendar.MONTH, month);
mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() { mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
public void onDateTimeChanged(DateTimePicker view, int year, int month, mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
int dayOfMonth, int hourOfDay, int minute) { mDate.set(Calendar.MINUTE, minute);
// 更新日期 //将视图中的各选项设置为系统当前时间
mDate.set(Calendar.YEAR, year); updateTitle(mDate.getTimeInMillis());
mDate.set(Calendar.MONTH, month); }
mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth); });
mDate.set(Calendar.HOUR_OF_DAY, hourOfDay); mDate.setTimeInMillis(date);
mDate.set(Calendar.MINUTE, minute); //得到系统时间
// 更新对话框标题 mDate.set(Calendar.SECOND, 0);
updateTitle(mDate.getTimeInMillis()); //将秒数设置为0
} mDateTimePicker.setCurrentDate(mDate.getTimeInMillis());
}); setButton(context.getString(R.string.datetime_dialog_ok), this);
// 设置当前日期 setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
mDate.setTimeInMillis(date); //设置按钮
mDate.set(Calendar.SECOND, 0); set24HourView(DateFormat.is24HourFormat(this.getContext()));
mDateTimePicker.setCurrentDate(mDate.getTimeInMillis()); //时间标准化打印
// 设置确定按钮 updateTitle(mDate.getTimeInMillis());
setButton(context.getString(R.string.datetime_dialog_ok), this); }
// 设置取消按钮
setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
// 设置24小时制
set24HourView(DateFormat.is24HourFormat(this.getContext()));
// 更新对话框标题
updateTitle(mDate.getTimeInMillis());
}
/** public void set24HourView(boolean is24HourView) {
* 设置是否为24小时制。 mIs24HourView = is24HourView;
* @param is24HourView 是否为24小时制 }
*/
public void set24HourView(boolean is24HourView) {
mIs24HourView = is24HourView;
}
/** public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) {
* 设置日期时间设置监听器。 mOnDateTimeSetListener = callBack;
* @param callBack 日期时间设置监听器 }//将时间日期滚动选择控件实例化
*/
public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) {
mOnDateTimeSetListener = callBack;
}
/** private void updateTitle(long date) {
* 更新对话框标题。 int flag =
* @param date 当前日期的时间戳 DateUtils.FORMAT_SHOW_YEAR |
*/ DateUtils.FORMAT_SHOW_DATE |
private void updateTitle(long date) { DateUtils.FORMAT_SHOW_TIME;
// 设置日期格式 flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_24HOUR;
int flag = setTitle(DateUtils.formatDateTime(this.getContext(), date, flag));
DateUtils.FORMAT_SHOW_YEAR | }//android开发中常见日期管理工具类（API）——DateUtils：按照上下午显示时间
DateUtils.FORMAT_SHOW_DATE |
DateUtils.FORMAT_SHOW_TIME;
// 根据是否为24小时制设置时间格式
flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_12HOUR;
// 设置对话框标题
setTitle(DateUtils.formatDateTime(this.getContext(), date, flag));
}
/** public void onClick(DialogInterface arg0, int arg1) {
* 点击事件处理。 if (mOnDateTimeSetListener != null) {
* @param arg0 对话框 mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());
* @param arg1 按钮ID }
*/ }//第一个参数arg0是接收到点击事件的对话框
public void onClick(DialogInterface arg0, int arg1) { //第二个参数arg1是该对话框上的按钮
// 如果设置了日期时间设置监听器，则通知日期时间已设置
if (mOnDateTimeSetListener != null) {
mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());
}
}
} }

42
src/java/net/micode/notes/ui/DropdownMenu.java
Unescape View File

@ -27,67 +27,39 @@ import android.widget.PopupMenu.OnMenuItemClickListener;
import net.micode.notes.R; import net.micode.notes.R;
/**
* DropdownMenu 类用于创建一个下拉菜单。
*/
public class DropdownMenu { public class DropdownMenu {
// 下拉菜单按钮
private Button mButton; private Button mButton;
// 弹出菜单
private PopupMenu mPopupMenu; private PopupMenu mPopupMenu;
// 菜单项 //声明一个下拉菜单
private Menu mMenu; private Menu mMenu;
/**
* 构造函数。
* @param context 上下文
* @param button 下拉菜单按钮
* @param menuId 菜单资源ID
*/
public DropdownMenu(Context context, Button button, int menuId) { public DropdownMenu(Context context, Button button, int menuId) {
mButton = button; mButton = button;
// 设置按钮背景为下拉图标
mButton.setBackgroundResource(R.drawable.dropdown_icon); mButton.setBackgroundResource(R.drawable.dropdown_icon);
// 创建弹出菜单 //设置这个view的背景
mPopupMenu = new PopupMenu(context, mButton); mPopupMenu = new PopupMenu(context, mButton);
// 获取菜单项
mMenu = mPopupMenu.getMenu(); mMenu = mPopupMenu.getMenu();
// 加载菜单资源
mPopupMenu.getMenuInflater().inflate(menuId, mMenu); mPopupMenu.getMenuInflater().inflate(menuId, mMenu);
// 设置按钮点击事件 //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() { mButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) { public void onClick(View v) {
// 显示弹出菜单
mPopupMenu.show(); mPopupMenu.show();
} }
}); });
} }
/**
* 设置下拉菜单项点击事件监听器。
* @param listener 菜单项点击事件监听器
*/
public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) { public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) {
if (mPopupMenu != null) { if (mPopupMenu != null) {
// 设置弹出菜单项点击事件监听器
mPopupMenu.setOnMenuItemClickListener(listener); mPopupMenu.setOnMenuItemClickListener(listener);
} }//设置菜单的监听
} }
/**
* 查找菜单项。
* @param id 菜单项ID
* @return 菜单项
*/
public MenuItem findItem(int id) { public MenuItem findItem(int id) {
return mMenu.findItem(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
/**
* 设置下拉菜单按钮标题。
* @param title 标题
*/
public void setTitle(CharSequence title) { public void setTitle(CharSequence title) {
mButton.setText(title); mButton.setText(title);
} }//布局文件，设置标题
} }

154
src/java/net/micode/notes/ui/FoldersListAdapter.java
Unescape View File

@ -14,108 +14,74 @@
* limitations under the License. * limitations under the License.
*/ */
package net.micode.notes.ui; package net.micode.notes.ui;
import android.content.Context; import android.content.Context;
import android.database.Cursor; import android.database.Cursor;
import android.view.View; import android.view.View;
import android.view.ViewGroup; import android.view.ViewGroup;
import android.widget.CursorAdapter; import android.widget.CursorAdapter;
import android.widget.LinearLayout; import android.widget.LinearLayout;
import android.widget.TextView; import android.widget.TextView;
import net.micode.notes.R; import net.micode.notes.R;
import net.micode.notes.data.Notes; import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.data.Notes.NoteColumns;
/**
* FoldersListAdapter 类用于创建文件夹列表的适配器。
*/
public class FoldersListAdapter extends CursorAdapter {
// 查询数据库时需要的列名
public static final String [] PROJECTION = {
NoteColumns.ID, // 文件夹ID
NoteColumns.SNIPPET // 文件夹名称
};
// 列索引，方便获取数据 public class FoldersListAdapter extends CursorAdapter {
public static final int ID_COLUMN = 0; //CursorAdapter是Cursor和ListView的接口
public static final int NAME_COLUMN = 1; //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
* 构造函数。 public View newView(Context context, Cursor cursor, ViewGroup parent) {
* @param context 上下文 //ViewGroup是容器
* @param c 游标 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
public FoldersListAdapter(Context context, Cursor c) {
super(context, c);
}
/** @Override
* 创建新的视图。 public void bindView(View view, Context context, Cursor cursor) {
* @param context 上下文 if (view instanceof FolderListItem) {
* @param cursor 游标 String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
* @param parent 父视图 .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
* @return 新的视图 ((FolderListItem) view).bind(folderName);
*/ }
@Override }//将各个布局文件绑定起来
public View newView(Context context, Cursor cursor, ViewGroup parent) {
return new FolderListItem(context);
}
/** public String getFolderName(Context context, int position) {
* 绑定视图。 Cursor cursor = (Cursor) getItem(position);
* @param view 视图 return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
* @param context 上下文 .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
* @param cursor 游标 }//根据数据库中标签的ID得到标签的各项内容
*/
@Override
public void bindView(View view, Context context, Cursor cursor) {
if (view instanceof FolderListItem) {
// 获取文件夹名称
String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
.getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
// 绑定文件夹名称
((FolderListItem) view).bind(folderName);
}
}
/** private class FolderListItem extends LinearLayout {
* 获取文件夹名称。 private TextView mName;
* @param context 上下文
* @param position 位置
* @return 文件夹名称
*/
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);
}
/** public FolderListItem(Context context) {
* FolderListItem 类用于创建文件夹列表项。 super(context);
*/ //操作数据库
private class FolderListItem extends LinearLayout { inflate(context, R.layout.folder_list_item, this);
private TextView mName; // 文件夹名称文本视图 //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) {
* 构造函数。 mName.setText(name);
* @param context 上下文 }
*/ }
public FolderListItem(Context context) {
super(context);
// 加载文件夹列表项布局
inflate(context, R.layout.folder_list_item, this);
// 获取文件夹名称文本视图
mName = (TextView) findViewById(R.id.tv_folder_name);
}
/** }
* 绑定文件夹名称。
* @param name 文件夹名称
*/
public void bind(String name) {
mName.setText(name); // 设置文件夹名称
}
}
}

62
src/java/net/micode/notes/ui/NoteEditActivity.java
Unescape View File

@ -57,6 +57,7 @@ import android.os.Environment;
import android.graphics.Bitmap; import android.graphics.Bitmap;
import android.graphics.Typeface; // 自带四种字体 import android.graphics.Typeface; // 自带四种字体
import net.micode.notes.R; import net.micode.notes.R;
import net.micode.notes.data.Notes; import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.TextNote; import net.micode.notes.data.Notes.TextNote;
@ -81,9 +82,9 @@ import java.util.Vector;
import java.io.File; import java.io.File;
import java.io.FileOutputStream; import java.io.FileOutputStream;
/**
* NoteEditActivity 类用于创建和编辑便签。
*/
public class NoteEditActivity extends Activity //NOTE: extends--单继承，但可多重继承 @zhoukexing 2023/12/17 23:29 public class NoteEditActivity extends Activity //NOTE: extends--单继承，但可多重继承 @zhoukexing 2023/12/17 23:29
implements OnClickListener, NoteSettingChangedListener, OnTextViewChangeListener { implements OnClickListener, NoteSettingChangedListener, OnTextViewChangeListener {
private Intent intent; //NOTE: implements--实现接口 @zhoukexing 2023/12/17 23:24 private Intent intent; //NOTE: implements--实现接口 @zhoukexing 2023/12/17 23:24
@ -92,11 +93,11 @@ public class NoteEditActivity extends Activity //NOTE: extends--单继承，但
* @zhoukexing 2023/12/17 23:39 * @zhoukexing 2023/12/17 23:39
*/ */
private class HeadViewHolder { private class HeadViewHolder {
public TextView tvModified; // 显示修改时间的文本视图 public TextView tvModified;
public ImageView ivAlertIcon; // 提醒图标的图像视图 public ImageView ivAlertIcon;
public TextView tvAlertDate; // 提醒日期的文本视图 public TextView tvAlertDate;
// 顶部置顶文本 // 顶部置顶文本
public TextView tvTopText; public TextView tvTopText;
@ -104,10 +105,9 @@ public class NoteEditActivity extends Activity //NOTE: extends--单继承，但
// 顶部长度统计文本 // 顶部长度统计文本
public TextView tvTextNum; public TextView tvTextNum;
public ImageView ibSetBgColor; // 设置背景颜色的按钮 public ImageView ibSetBgColor;
} }
// 背景颜色选择器按钮映射
private static final Map<Integer, Integer> sBgSelectorBtnsMap = new HashMap<Integer, Integer>(); private static final Map<Integer, Integer> sBgSelectorBtnsMap = new HashMap<Integer, Integer>();
static { static {
sBgSelectorBtnsMap.put(R.id.iv_bg_yellow, ResourceParser.YELLOW); sBgSelectorBtnsMap.put(R.id.iv_bg_yellow, ResourceParser.YELLOW);
@ -117,7 +117,6 @@ public class NoteEditActivity extends Activity //NOTE: extends--单继承，但
sBgSelectorBtnsMap.put(R.id.iv_bg_white, ResourceParser.WHITE); sBgSelectorBtnsMap.put(R.id.iv_bg_white, ResourceParser.WHITE);
} }
// 背景颜色选择器选中状态映射
private static final Map<Integer, Integer> sBgSelectorSelectionMap = new HashMap<Integer, Integer>(); private static final Map<Integer, Integer> sBgSelectorSelectionMap = new HashMap<Integer, Integer>();
static { static {
sBgSelectorSelectionMap.put(ResourceParser.YELLOW, R.id.iv_bg_yellow_select); sBgSelectorSelectionMap.put(ResourceParser.YELLOW, R.id.iv_bg_yellow_select);
@ -127,7 +126,6 @@ public class NoteEditActivity extends Activity //NOTE: extends--单继承，但
sBgSelectorSelectionMap.put(ResourceParser.WHITE, R.id.iv_bg_white_select); sBgSelectorSelectionMap.put(ResourceParser.WHITE, R.id.iv_bg_white_select);
} }
// 字体大小选择器按钮映射
private static final Map<Integer, Integer> sFontSizeBtnsMap = new HashMap<Integer, Integer>(); private static final Map<Integer, Integer> sFontSizeBtnsMap = new HashMap<Integer, Integer>();
static { static {
sFontSizeBtnsMap.put(R.id.ll_font_large, ResourceParser.TEXT_LARGE); sFontSizeBtnsMap.put(R.id.ll_font_large, ResourceParser.TEXT_LARGE);
@ -136,7 +134,6 @@ public class NoteEditActivity extends Activity //NOTE: extends--单继承，但
sFontSizeBtnsMap.put(R.id.ll_font_super, ResourceParser.TEXT_SUPER); sFontSizeBtnsMap.put(R.id.ll_font_super, ResourceParser.TEXT_SUPER);
} }
// 字体大小选择器选中状态映射
private static final Map<Integer, Integer> sFontSelectorSelectionMap = new HashMap<Integer, Integer>(); private static final Map<Integer, Integer> sFontSelectorSelectionMap = new HashMap<Integer, Integer>();
static { static {
sFontSelectorSelectionMap.put(ResourceParser.TEXT_LARGE, R.id.iv_large_select); sFontSelectorSelectionMap.put(ResourceParser.TEXT_LARGE, R.id.iv_large_select);
@ -145,44 +142,47 @@ public class NoteEditActivity extends Activity //NOTE: extends--单继承，但
sFontSelectorSelectionMap.put(ResourceParser.TEXT_SUPER, R.id.iv_super_select); sFontSelectorSelectionMap.put(ResourceParser.TEXT_SUPER, R.id.iv_super_select);
} }
private static final String TAG = "NoteEditActivity"; private static final String TAG = "NoteEditActivity";
private static int mMaxRevokeTimes = 10; // 最大撤销次数 private static int mMaxRevokeTimes = 10;
private HeadViewHolder mNoteHeaderHolder; // 便签头部视图的持有者 private HeadViewHolder mNoteHeaderHolder;
private View mHeadViewPanel; // 头部视图面板 private View mHeadViewPanel;
private View mNoteBgColorSelector; // 便签背景颜色选择器 private View mNoteBgColorSelector;
private View mFontSizeSelector; // 字体大小选择器 private View mFontSizeSelector;
private EditText mNoteEditor; // 便签编辑器 private EditText mNoteEditor;
private View mNoteEditorPanel; // 便签编辑器面板 private View mNoteEditorPanel;
private WorkingNote mWorkingNote; // 正在编辑的便签 private WorkingNote mWorkingNote;
private SharedPreferences mSharedPrefs; // 共享偏好设置 private SharedPreferences mSharedPrefs;
private int mFontSizeId; // 字体大小ID private int mFontSizeId;
private int mFontStyleId; // 字体样式ID private int mFontStyleId;
private static final String PREFERENCE_FONT_SIZE = "pref_font_size"; // 字体大小偏好设置键 private static final String PREFERENCE_FONT_SIZE = "pref_font_size";
private static final String PREFERENCE_FONT_STYLE = "pref_font_style"; // 字体样式偏好设置键 private static final String PREFERENCE_FONT_STYLE = "pref_font_style";
private static final int SHORTCUT_ICON_TITLE_MAX_LEN = 10; // 快捷方式图标标题最大长度 private static final int SHORTCUT_ICON_TITLE_MAX_LEN = 10;
public static final String TAG_CHECKED = String.valueOf('\u221A'); // 已选中标签 public static final String TAG_CHECKED = String.valueOf('\u221A');
public static final String TAG_UNCHECKED = String.valueOf('\u25A1'); // 未选中标签 public static final String TAG_UNCHECKED = String.valueOf('\u25A1');
private LinearLayout mEditTextList; // 编辑文本列表 private LinearLayout mEditTextList;
private String mUserQuery; // 用户查询 private String mUserQuery;
private Pattern mPattern; // 正则表达式模式 private Pattern mPattern;
// 存储改变的数据 // 存储改变的数据
private Vector<SpannableString> mHistory = new Vector<SpannableString>(mMaxRevokeTimes); private Vector<SpannableString> mHistory = new Vector<SpannableString>(mMaxRevokeTimes);
private boolean mIsRvoke; // 是否撤销 private boolean mIsRvoke;
/*--- 以上是此类中的数据区，以下是方法区 ---*/ /*--- 以上是此类中的数据区，以下是方法区 ---*/

485
src/java/net/micode/notes/ui/NoteEditText.java
Unescape View File

@ -14,222 +14,273 @@
* limitations under the License. * limitations under the License.
*/ */
package net.micode.notes.ui; package net.micode.notes.ui;
import android.content.Context; import android.content.Context;
import android.graphics.Rect; import android.graphics.Rect;
import android.text.Layout; import android.text.Layout;
import android.text.Selection; import android.text.Selection;
import android.text.Spanned; import android.text.Spanned;
import android.text.TextUtils; import android.text.TextUtils;
import android.text.style.URLSpan; import android.text.style.URLSpan;
import android.util.AttributeSet; import android.util.AttributeSet;
import android.util.Log; import android.util.Log;
import android.view.ContextMenu; import android.view.ContextMenu;
import android.view.KeyEvent; import android.view.KeyEvent;
import android.view.MenuItem; import android.view.MenuItem;
import android.view.MenuItem.OnMenuItemClickListener; import android.view.MenuItem.OnMenuItemClickListener;
import android.view.MotionEvent; import android.view.MotionEvent;
import android.widget.EditText; import android.widget.EditText;
import net.micode.notes.R; import net.micode.notes.R;
import java.util.HashMap; import java.util.HashMap;
import java.util.Map; import java.util.Map;
/** //继承edittext，设置便签设置文本框
* 自定义的便签编辑文本框，扩展自EditText。 public class NoteEditText extends EditText {
* 提供了对文本编辑的特殊处理，如删除、添加文本框、创建上下文菜单等。 private static final String TAG = "NoteEditText";
*/ private int mIndex;
public class NoteEditText extends EditText { private int mSelectionStartBeforeDelete;
private static final String TAG = "NoteEditText"; // 日志标签
private int mIndex; // 当前文本框的索引 private static final String SCHEME_TEL = "tel:" ;
private int mSelectionStartBeforeDelete; // 删除前的选择起始位置 private static final String SCHEME_HTTP = "http:" ;
private static final String SCHEME_EMAIL = "mailto:" ;
// 定义几种URL协议的前缀
private static final String SCHEME_TEL = "tel:"; // 电话 ///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 String SCHEME_HTTP = "http:"; // 网络 private static final Map<String, Integer> sSchemaActionResMap = new HashMap<String, Integer>();
private static final String SCHEME_EMAIL = "mailto:"; // 邮箱 static {
sSchemaActionResMap.put(SCHEME_TEL, R.string.note_link_tel);
// URL协议到资源ID的映射 sSchemaActionResMap.put(SCHEME_HTTP, R.string.note_link_web);
private static final Map<String, Integer> sSchemaActionResMap = new HashMap<String, Integer>(); sSchemaActionResMap.put(SCHEME_EMAIL, R.string.note_link_email);
static { }
sSchemaActionResMap.put(SCHEME_TEL, R.string.note_link_tel); // 电话链接文本
sSchemaActionResMap.put(SCHEME_HTTP, R.string.note_link_web); // 网络链接文本 /**
sSchemaActionResMap.put(SCHEME_EMAIL, R.string.note_link_email); // 邮箱链接文本 * 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 {
* 文本框变化监听器接口。 /**
* 用于在文本框内容发生变化时通知外部。 * Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens
*/ * and the text is null
public interface OnTextViewChangeListener { */
/** //处理删除按键时的操作
* 当文本框被删除时调用。 void onEditTextDelete(int index, String text);
* @param index 文本框的索引
* @param text 被删除的文本内容 /**
*/ * Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER}
void onEditTextDelete(int index, String text); * happen
*/
/** //处理进入按键时的操作
* 当文本框后添加新的文本框时调用。 void onEditTextEnter(int index, String text);
* @param index 新文本框的索引
* @param text 新文本框的初始文本内容 /**
*/ * Hide or show item option when text change
void onEditTextEnter(int index, String text); */
void onTextChange(int index, boolean hasText);
/** }
* 当文本框内容发生变化时调用。
* @param index 文本框的索引 private OnTextViewChangeListener mOnTextViewChangeListener;
* @param hasText 文本框是否包含文本
*/ //根据context设置文本
void onTextChange(int index, boolean hasText); public NoteEditText(Context context) {
} super(context, null);//用super引用父类变量
mIndex = 0;
private OnTextViewChangeListener mOnTextViewChangeListener; // 文本框变化监听器 }
/** //设置当前光标
* 构造函数。 public void setIndex(int index) {
* @param context 上下文 mIndex = index;
*/ }
public NoteEditText(Context context) {
super(context, null); //初始化文本修改标记
mIndex = 0; // 默认索引为0 public void setOnTextViewChangeListener(OnTextViewChangeListener listener) {
} mOnTextViewChangeListener = listener;
}
/**
* 设置文本框的索引。 //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
* @param index 文本框的索引 //初始化便签
*/ public NoteEditText(Context context, AttributeSet attrs) {
public void setIndex(int index) { super(context, attrs, android.R.attr.editTextStyle);
mIndex = index; }
}
// 根据defstyle自动初始化
/** public NoteEditText(Context context, AttributeSet attrs, int defStyle) {
* 设置文本框变化监听器。 super(context, attrs, defStyle);
* @param listener 文本框变化监听器 // TODO Auto-generated construct or stub
*/ }
public void setOnTextViewChangeListener(OnTextViewChangeListener listener) {
mOnTextViewChangeListener = listener; @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。*/
* 构造函数。 public boolean onTouchEvent(MotionEvent event) {
* @param context 上下文 switch (event.getAction()) {
* @param attrs 属性集 //重写了需要处理屏幕被按下的事件
*/ case MotionEvent.ACTION_DOWN:
public NoteEditText(Context context, AttributeSet attrs) { //跟新当前坐标值
super(context, attrs, android.R.attr.editTextStyle); int x = (int) event.getX();
} int y = (int) event.getY();
x -= getTotalPaddingLeft();
/** y -= getTotalPaddingTop();
* 构造函数。 x += getScrollX();
* @param context 上下文 y += getScrollY();
* @param attrs 属性集
* @param defStyle 默认样式 //用布局控件layout根据x,y的新值设置新的位置
*/ Layout layout = getLayout();
public NoteEditText(Context context, AttributeSet attrs, int defStyle) { int line = layout.getLineForVertical(y);
super(context, attrs, defStyle); int off = layout.getOffsetForHorizontal(line, x);
}
//更新光标新的位置
/** Selection.setSelection(getText(), off);
* 处理触摸事件。 break;
* 当用户触摸文本框时，根据触摸位置设置文本选择位置。 }
* @param event 触摸事件
* @return 是否处理了事件 return super.onTouchEvent(event);
*/ }
@Override
public boolean onTouchEvent(MotionEvent event) { @Override
if (event.getAction() == MotionEvent.ACTION_DOWN) { /*
int x = (int) event.getX(); * 函数功能：处理用户按下一个键盘按键时会触发 的事件
int y = (int) event.getY(); * 实现过程：如下注释
x -= getTotalPaddingLeft(); */
y -= getTotalPaddingTop(); public boolean onKeyDown(int keyCode, KeyEvent event) {
x += getScrollX(); switch (keyCode) {
y += getScrollY(); //根据按键的 Unicode 编码值来处理
case KeyEvent.KEYCODE_ENTER:
Layout layout = getLayout(); //“进入”按键
int line = layout.getLineForVertical(y); if (mOnTextViewChangeListener != null) {
int off = layout.getOffsetForHorizontal(line, x); return false;
Selection.setSelection(getText(), off); // 设置文本选择位置 }
} break;
return super.onTouchEvent(event); case KeyEvent.KEYCODE_DEL:
} //“删除”按键
mSelectionStartBeforeDelete = getSelectionStart();
/** break;
* 处理按键按下事件。 default:
* 主要处理回车键和删除键的按下。 break;
* @param keyCode 按键代码 }
* @param event 按键事件 //继续执行父类的其他点击事件
* @return 是否处理了事件 return super.onKeyDown(keyCode, event);
*/ }
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) { @Override
switch (keyCode) { /*
case KeyEvent.KEYCODE_ENTER: * 函数功能：处理用户松开一个键盘按键时会触发 的事件
if (mOnTextViewChangeListener != null) { * 实现方式：如下注释
return false; // 不处理回车键，交由监听器处理 */
} public boolean onKeyUp(int keyCode, KeyEvent event) {
break; switch(keyCode) {
case KeyEvent.KEYCODE_DEL: //根据按键的 Unicode 编码值来处理，有删除和进入2种操作
mSelectionStartBeforeDelete = getSelectionStart(); // 记录删除前的选择起始位置 case KeyEvent.KEYCODE_DEL:
break; if (mOnTextViewChangeListener != null) {
} //若是被修改过
return super.onKeyDown(keyCode, event); 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
* 处理按键抬起事件。 return true;
* 主要处理删除键和回车键的抬起。 }
* @param keyCode 按键代码 } else {
* @param event 按键事件 Log.d(TAG, "OnTextViewChangeListener was not seted");
* @return 是否处理了事件 //其他情况报错，文档的改动监听器并没有建立
*/ }
@Override break;
public boolean onKeyUp(int keyCode, KeyEvent event) { case KeyEvent.KEYCODE_ENTER:
switch (keyCode) { //同上也是分为监听器是否建立2种情况
case KeyEvent.KEYCODE_DEL: // 删除键 if (mOnTextViewChangeListener != null) {
if (mOnTextViewChangeListener != null) { int selectionStart = getSelectionStart();
if (mSelectionStartBeforeDelete == 0 && mIndex != 0) { //获取当前位置
// 如果删除前的选择起始位置为0且不是第一个文本框，则删除当前文本框 String text = getText().subSequence(selectionStart, length()).toString();
mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString()); //获取当前文本
return true; setText(getText().subSequence(0, selectionStart));
} //根据获取的文本设置当前文本
} else { mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text);
Log.d(TAG, "OnTextViewChangeListener was not seted"); //当{@link KeyEvent#KEYCODE_ENTER}添加新文本
} } else {
break; Log.d(TAG, "OnTextViewChangeListener was not seted");
case KeyEvent.KEYCODE_ENTER: // 回车键 //其他情况报错，文档的改动监听器并没有建立
if (mOnTextViewChangeListener != null) { }
int selectionStart = getSelectionStart(); break;
String text = getText().subSequence(selectionStart, length()).toString(); default:
setText(getText().subSequence(0, selectionStart)); // 删除回车键后的内容 break;
mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text); // 添加新的文本框 }
} else { //继续执行父类的其他按键弹起的事件
Log.d(TAG, "OnTextViewChangeListener was not seted"); return super.onKeyUp(keyCode, event);
} }
break;
} @Override
return super.onKeyUp(keyCode, event); /*
} * 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。
* 处理焦点变化事件。 direction表示焦点移动的方向，用数值表示
* 当文本框失去焦点且内容为空时，通知监听器文本框内容为空。 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
* @param focused 是否获得焦点 */
* @param direction 焦点变化方向 protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
* @param previouslyFocusedRect 之前获得焦点的矩形区域 if (mOnTextViewChangeListener != null) {
*/ //若监听器已经建立
@Override if (!focused && TextUtils.isEmpty(getText())) {
protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) { //获取到焦点并且文本不为空
if (mOnTextViewChangeListener != null) { mOnTextViewChangeListener.onTextChange(mIndex, false);
if (!focused && TextUtils.isEmpty(getText())) { //mOnTextViewChangeListener子函数，置false隐藏事件选项
mOnTextViewChangeListener.onTextChange(mIndex, false); } else {
} else { mOnTextViewChangeListener.onTextChange(mIndex, true);
mOnTextViewChangeListener.onTextChange(mIndex, true); //mOnTextViewChangeListener子函数，置true显示事件选项
} }
} }
super.onFocusChanged(focused, direction, previouslyFocusedRect); //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);
}
}

130
src/java/net/micode/notes/ui/NoteItemData.java
Unescape View File

@ -25,12 +25,8 @@ import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.tool.DataUtils; import net.micode.notes.tool.DataUtils;
/**
* NoteItemData 类用于封装便签项的数据。
* 它从数据库游标中提取便签的相关信息，并提供一些辅助方法来判断便签的状态和类型。
*/
public class NoteItemData { public class NoteItemData {
// 定义查询便签数据库时需要的列
static final String [] PROJECTION = new String [] { static final String [] PROJECTION = new String [] {
NoteColumns.ID, NoteColumns.ID,
NoteColumns.ALERTED_DATE, NoteColumns.ALERTED_DATE,
@ -47,7 +43,6 @@ public class NoteItemData {
NoteColumns.TOP, NoteColumns.TOP,
}; };
// 定义列的索引
private static final int ID_COLUMN = 0; private static final int ID_COLUMN = 0;
private static final int ALERTED_DATE_COLUMN = 1; private static final int ALERTED_DATE_COLUMN = 1;
private static final int BG_COLOR_ID_COLUMN = 2; private static final int BG_COLOR_ID_COLUMN = 2;
@ -60,9 +55,11 @@ public class NoteItemData {
private static final int TYPE_COLUMN = 9; private static final int TYPE_COLUMN = 9;
private static final int WIDGET_ID_COLUMN = 10; private static final int WIDGET_ID_COLUMN = 10;
private static final int WIDGET_TYPE_COLUMN = 11; private static final int WIDGET_TYPE_COLUMN = 11;
private static final int TOP_STATE_COLUMN = 12; private static final int TOP_STATE_COLUMN = 12;
// 便签项的数据字段 /** 以下这些数据，对照着NotesDatabaseHelper.java看
* 都是数据行里设置好的属性
* @zhoukexing 2023/12/25 20:22 */
private long mId; private long mId;
private long mAlertDate; private long mAlertDate;
private int mBgColorId; private int mBgColorId;
@ -79,7 +76,6 @@ public class NoteItemData {
private String mName; private String mName;
private String mPhoneNumber; private String mPhoneNumber;
// 便签项的位置状态
private boolean mIsLastItem; private boolean mIsLastItem;
private boolean mIsFirstItem; private boolean mIsFirstItem;
private boolean mIsOnlyOneItem; private boolean mIsOnlyOneItem;
@ -87,33 +83,37 @@ public class NoteItemData {
private boolean mIsMultiNotesFollowingFolder; private boolean mIsMultiNotesFollowingFolder;
/** /**
* 构造函数，从游标中提取便签项的数据。 * @method: NoteItemData
* @param context 上下文 * @description: 描述一下方法的作用
* @param cursor 数据库游标 * @date: 2023/12/25 19:58
* @author: zhoukexing
* @param: [context, cursor]
* @return:
*/ */
public NoteItemData(Context context, Cursor cursor) { public NoteItemData(Context context, Cursor cursor) { // 把cursor理解为这样一个指针，指向一个表格 @zhoukexing 2023/12/25 20:12
mId = cursor.getLong(ID_COLUMN); // 获取便签ID mId = cursor.getLong(ID_COLUMN); // 可以根据传入的列号获取到表格里对应列的值 @zhoukexing 2023/12/25 20:12
mAlertDate = cursor.getLong(ALERTED_DATE_COLUMN); // 获取提醒日期 mAlertDate = cursor.getLong(ALERTED_DATE_COLUMN);
mBgColorId = cursor.getInt(BG_COLOR_ID_COLUMN); // 获取背景颜色ID mBgColorId = cursor.getInt(BG_COLOR_ID_COLUMN);
mCreatedDate = cursor.getLong(CREATED_DATE_COLUMN); // 获取创建日期 mCreatedDate = cursor.getLong(CREATED_DATE_COLUMN);
mHasAttachment = (cursor.getInt(HAS_ATTACHMENT_COLUMN) > 0); // 是否有附件 mHasAttachment = (cursor.getInt(HAS_ATTACHMENT_COLUMN) > 0) ? true : false;
mModifiedDate = cursor.getLong(MODIFIED_DATE_COLUMN); // 获取修改日期 mModifiedDate = cursor.getLong(MODIFIED_DATE_COLUMN);
mNotesCount = cursor.getInt(NOTES_COUNT_COLUMN); // 获取便签数量 mNotesCount = cursor.getInt(NOTES_COUNT_COLUMN);
mParentId = cursor.getLong(PARENT_ID_COLUMN); // 获取父便签ID mParentId = cursor.getLong(PARENT_ID_COLUMN);
mSnippet = cursor.getString(SNIPPET_COLUMN); // 获取便签摘要 mSnippet = cursor.getString(SNIPPET_COLUMN);
mSnippet = mSnippet.replace(NoteEditActivity.TAG_CHECKED, "").replace( mSnippet = mSnippet.replace(NoteEditActivity.TAG_CHECKED, "").replace(
NoteEditActivity.TAG_UNCHECKED, ""); // 去除摘要中的标签 NoteEditActivity.TAG_UNCHECKED, "");
mType = cursor.getInt(TYPE_COLUMN); // 获取便签类型 mType = cursor.getInt(TYPE_COLUMN);
mWidgetId = cursor.getInt(WIDGET_ID_COLUMN); // 获取小部件ID mWidgetId = cursor.getInt(WIDGET_ID_COLUMN);
mWidgetType = cursor.getInt(WIDGET_TYPE_COLUMN); // 获取小部件类型 mWidgetType = cursor.getInt(WIDGET_TYPE_COLUMN);
mTop = cursor.getInt(TOP_STATE_COLUMN); // 获取置顶状态 mTop = cursor.getInt(TOP_STATE_COLUMN);
mPhoneNumber = ""; mPhoneNumber = "";
if (mParentId == Notes.ID_CALL_RECORD_FOLDER) { // 如果便签属于通话记录文件夹 if (mParentId == Notes.ID_CALL_RECORD_FOLDER) { //Q: 文件夹为什么有电话记录之说？怎么是通过一个便签的父文件夹来判断便签内有无电话号码？@zkx 2023/12/25
mPhoneNumber = DataUtils.getCallNumberByNoteId(context.getContentResolver(), mId); // 获取电话号码 mPhoneNumber = DataUtils.getCallNumberByNoteId(context.getContentResolver(), mId);
if (!TextUtils.isEmpty(mPhoneNumber)) { // 如果电话号码不为空 // 根据电话号码锁定联系人名称，若不在联系人里，直接使用电话号码 @zhoukexing 2023/12/25 20:17
mName = Contact.getContact(context, mPhoneNumber); // 获取联系人名称 if (!TextUtils.isEmpty(mPhoneNumber)) {
if (mName == null) { // 如果联系人名称为空，则使用电话号码 mName = Contact.getContact(context, mPhoneNumber);
if (mName == null) {
mName = mPhoneNumber; mName = mPhoneNumber;
} }
} }
@ -122,114 +122,70 @@ public class NoteItemData {
if (mName == null) { if (mName == null) {
mName = ""; mName = "";
} }
checkPostion(cursor); // 检查便签项的位置状态 checkPostion(cursor);
} }
/**
* 检查便签项的位置状态。
* @param cursor 数据库游标
*/
private void checkPostion(Cursor cursor) { private void checkPostion(Cursor cursor) {
mIsLastItem = cursor.isLast(); // 是否是最后一个便签项 mIsLastItem = cursor.isLast() ? true : false;
mIsFirstItem = cursor.isFirst(); // 是否是第一个便签项 mIsFirstItem = cursor.isFirst() ? true : false;
mIsOnlyOneItem = (cursor.getCount() == 1); // 是否只有一个便签项 mIsOnlyOneItem = (cursor.getCount() == 1);
mIsMultiNotesFollowingFolder = false; mIsMultiNotesFollowingFolder = false;
mIsOneNoteFollowingFolder = false; mIsOneNoteFollowingFolder = false;
if (mType == Notes.TYPE_NOTE && !mIsFirstItem) { // 如果是便签且不是第一个便签项 if (mType == Notes.TYPE_NOTE && !mIsFirstItem) {
int position = cursor.getPosition(); int position = cursor.getPosition();
if (cursor.moveToPrevious()) { // 移动到前一个便签项 if (cursor.moveToPrevious()) {
if (cursor.getInt(TYPE_COLUMN) == Notes.TYPE_FOLDER if (cursor.getInt(TYPE_COLUMN) == Notes.TYPE_FOLDER
|| cursor.getInt(TYPE_COLUMN) == Notes.TYPE_SYSTEM) { // 如果前一个便签项是文件夹或系统便签 || cursor.getInt(TYPE_COLUMN) == Notes.TYPE_SYSTEM) {
if (cursor.getCount() > (position + 1)) { // 如果便签项数量大于当前便签项的位置+1 if (cursor.getCount() > (position + 1)) {
mIsMultiNotesFollowingFolder = true; // 多个便签项跟随文件夹 mIsMultiNotesFollowingFolder = true;
} else { } else {
mIsOneNoteFollowingFolder = true; // 一个便签项跟随文件夹 mIsOneNoteFollowingFolder = true;
} }
} }
if (!cursor.moveToNext()) { // 移动回当前便签项 if (!cursor.moveToNext()) {
throw new IllegalStateException("cursor move to previous but can't move back"); throw new IllegalStateException("cursor move to previous but can't move back");
} }
} }
} }
} }
/**
* 判断是否是跟随文件夹的单个便签项。
* @return 是否是跟随文件夹的单个便签项
*/
public boolean isOneFollowingFolder() { public boolean isOneFollowingFolder() {
return mIsOneNoteFollowingFolder; return mIsOneNoteFollowingFolder;
} }
/**
* 判断是否是跟随文件夹的多个便签项。
* @return 是否是跟随文件夹的多个便签项
*/
public boolean isMultiFollowingFolder() { public boolean isMultiFollowingFolder() {
return mIsMultiNotesFollowingFolder; return mIsMultiNotesFollowingFolder;
} }
/**
* 判断是否是最后一个便签项。
* @return 是否是最后一个便签项
*/
public boolean isLast() { public boolean isLast() {
return mIsLastItem; return mIsLastItem;
} }
/**
* 获取通话记录的联系人名称。
* @return 联系人名称
*/
public String getCallName() { public String getCallName() {
return mName; return mName;
} }
/**
* 判断是否是第一个便签项。
* @return 是否是第一个便签项
*/
public boolean isFirst() { public boolean isFirst() {
return mIsFirstItem; return mIsFirstItem;
} }
/**
* 判断是否是唯一的便签项。
* @return 是否是唯一的便签项
*/
public boolean isSingle() { public boolean isSingle() {
return mIsOnlyOneItem; return mIsOnlyOneItem;
} }
/**
* 获取便签项的置顶状态。
* @return 置顶状态
*/
public int getTop(){ public int getTop(){
return mTop; return mTop;
} }
/**
* 获取便签项的ID。
* @return 便签项的ID
*/
public long getId() { public long getId() {
return mId; return mId;
} }
/**
* 获取便签项的提醒日期。
* @return 提醒日期
*/
public long getAlertDate() { public long getAlertDate() {
return mAlertDate; return mAlertDate;
} }
/**
* 获取便签项的创建日期。
* @return 创建日期
*/
public long getCreatedDate() { public long getCreatedDate() {
return mCreatedDate; return mCreatedDate;
} }

457
src/java/net/micode/notes/ui/NotesListAdapter.java
Unescape View File

@ -14,251 +14,260 @@
* limitations under the License. * limitations under the License.
*/ */
package net.micode.notes.ui; package net.micode.notes.ui;
import android.text.TextUtils; import android.content.Context;
import android.content.Context; import android.database.Cursor;
import android.database.Cursor; import android.util.Log;
import android.util.Log; import android.view.View;
import android.view.View; import android.view.ViewGroup;
import android.view.ViewGroup; import android.widget.CursorAdapter;
import android.widget.CursorAdapter;
import android.widget.LinearLayout;
import net.micode.notes.data.Notes;
import java.util.Collection; import net.micode.notes.data.Notes;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
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; * 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。
public int widgetType; * 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
public NotesListAdapter(Context context, Cursor cursor) { /*
super(context, cursor); * 桌面widget的属性，包括编号和类型
mSelectedIndex = new HashMap<Integer, Boolean>(); */
// mSnippetPosition = new HashMap<Integer, String>(); public static class AppWidgetAttribute {
mContext = context; public int widgetId;
mNotesCount = 0; public int widgetType;
// mQuery=""; };
}
// @Override /*
// public View getView(int position, View convertView, ViewGroup parent) { * 函数功能：初始化便签链接器
// View view = super.getView(position, convertView, parent); * 函数实现：根据传进来的内容设置相关变量
// // 仅显示便签项中包含搜索串的便签 */
// String snippet = mSnippetPosition.get(position); public NotesListAdapter(Context context) {
// Log.e(TAG, snippet); super(context, null); //父类对象置空
// if(!TextUtils.isEmpty(mQuery) && !mSnippetPosition.get(position).contains(mQuery)) { mSelectedIndex = new HashMap<Integer, Boolean>(); //新建选项下标的hash表
// view.setVisibility(View.GONE); mContext = context;
// LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(0,1); mNotesCount = 0;
// view.setLayoutParams(param); }
// }
// return view;
// }
@Override @Override
public View newView(Context context, Cursor cursor, ViewGroup parent) { /*
return new NotesListItem(context); * 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);
}
@Override /*
public void bindView(View view, Context context, Cursor cursor) { * 函数功能：将已经存在的视图和鼠标指向的数据进行捆绑
if (view instanceof NotesListItem) { * 函数实现：如下注释
NoteItemData itemData = new NoteItemData(context, cursor); */
((NotesListItem) view).bind(context, itemData, mChoiceMode, @Override
isSelectedItem(cursor.getPosition())); 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
}
}
public void setCheckedItem(final int position, final boolean checked) { /*
mSelectedIndex.put(position, checked); * 函数功能：设置勾选框
notifyDataSetChanged(); * 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
}
public boolean isInChoiceMode() { /*
return mChoiceMode; * 函数功能：判断单选按钮是否勾选
} */
public boolean isInChoiceMode() {
return mChoiceMode;
}
public void setChoiceMode(boolean mode) { /*
mSelectedIndex.clear(); * 函数功能：设置单项选项框
mChoiceMode = mode; * 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;
}
/** /*
* @method: selectAll * 函数功能：选择全部选项
* @description: 传入一个boolean值， * 函数实现：如下注释
* 通过setCheckedItem来修改mSelectedIndex数据成员， */
* 将值都置为传入的参数， public void selectAll(boolean checked) {
* 达到选中所有项 or 不选所有项的效果。 Cursor cursor = getCursor();
* @date: 2024/1/3 22:36 //获取光标位置
* @author: zhoukexing for (int i = 0; i < getCount(); i++) {
* @param: [checked] if (cursor.moveToPosition(i)) {
* @return: void if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) {
*/ setCheckedItem(i, checked);
public void selectAll(boolean checked) { }
Cursor cursor = getCursor(); }
for (int i = 0; i < getCount(); i++) { }
if (cursor.moveToPosition(i)) { //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
if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) { }
setCheckedItem(i, checked);
}
}
}
}
public HashSet<Long> getSelectedItemIds() { /*
HashSet<Long> itemSet = new HashSet<Long>(); * 函数功能：建立选择项的下标列表
for (Integer position : mSelectedIndex.keySet()) { * 函数实现：如下注释
if (mSelectedIndex.get(position) == true) { */
Long id = getItemId(position); public HashSet<Long> getSelectedItemIds() {
if (id == Notes.ID_ROOT_FOLDER) { HashSet<Long> itemSet = new HashSet<Long>();
Log.d(TAG, "Wrong item id, should not happen"); //建立hash表
} else { for (Integer position : mSelectedIndex.keySet()) {
itemSet.add(id); //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; }
} }
public HashSet<AppWidgetAttribute> getSelectedWidget() { return itemSet;
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(); * 函数功能：建立桌面Widget的选项表
if (null == values) { * 函数实现：如下注释
return 0; */
} public HashSet<AppWidgetAttribute> getSelectedWidget() {
Iterator<Boolean> iter = values.iterator(); HashSet<AppWidgetAttribute> itemSet = new HashSet<AppWidgetAttribute>();
int count = 0; for (Integer position : mSelectedIndex.keySet()) {
while (iter.hasNext()) { if (mSelectedIndex.get(position) == true) {
if (true == iter.next()) { Cursor c = (Cursor) getItem(position);
count++; //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
return count; 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 getMNotesCount() { /*
return mNotesCount; * 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;
}
/** /*
* @method: isAllSelected * 函数功能：判断是否全部选中
* @description: 如果都选中了就返回true，否则返回false * 函数实现：如下注释
* @date: 2024/1/2 20:47 */
* @author: zhoukexing public boolean isAllSelected() {
* @param: [] int checkedCount = getSelectedCount();
* @return: boolean return (checkedCount != 0 && checkedCount == mNotesCount);
*/ //获取选项数看是否等于便签的个数
public boolean isAllSelected() { }
int checkedCount = getSelectedCount();
return (checkedCount != 0 && checkedCount == mNotesCount);
}
// public void setmQuery(String Query) { /*
// mQuery = Query; * 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);
}
public boolean isSelectedItem(final int position) { @Override
if (null == mSelectedIndex.get(position)) { /*
return false; * 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
return mSelectedIndex.get(position); */
} protected void onContentChanged() {
super.onContentChanged();
//执行基类函数
calcNotesCount();
}
@Override @Override
protected void onContentChanged() { /*
super.onContentChanged(); * 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
calcNotesCount(); */
// updateSnippetMap(); // 在数据发生改变时更新 Snippet 到 Position 的映射 public void changeCursor(Cursor cursor) {
} super.changeCursor(cursor);
//执行基类函数
calcNotesCount();
}
/** /*
* @Method changeCursor * 函数功能：计算便签数量
* @Date 2024/1/18 15:36 *
* @param cursor */
* @Author lenovo private void calcNotesCount() {
* @Return void mNotesCount = 0;
* @Description 当cursor改变时调用，需要在这里进行一些数据更新工作 for (int i = 0; i < getCount(); i++) {
*/ //获取总数同时遍历
@Override Cursor c = (Cursor) getItem(i);
public void changeCursor(Cursor cursor) { if (c != null) {
super.changeCursor(cursor); if (NoteItemData.getNoteType(c) == Notes.TYPE_NOTE) {
calcNotesCount(); mNotesCount++;
// updateSnippetMap(); // 在数据发生改变时更新 Snippet 到 Position 的映射 //若该位置不为空并且文本类型为便签就+1
} }
} else {
// private void updateSnippetMap() { Log.e(TAG, "Invalid cursor");
// mSnippetPosition = new HashMap<Integer, String>(); return;
// for (int i = 0; i < getCount(); i++) { }
// Cursor c = (Cursor) getItem(i); //否则报错
// 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;
}
}
}
}

225
src/java/net/micode/notes/ui/NotesListItem.java
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@ -14,126 +14,119 @@
* limitations under the License. * limitations under the License.
*/ */
package net.micode.notes.ui; package net.micode.notes.ui;
import android.content.Context; import android.content.Context;
import android.text.format.DateUtils; import android.text.format.DateUtils;
import android.view.View; import android.view.View;
import android.widget.CheckBox; import android.widget.CheckBox;
import android.widget.ImageView; import android.widget.ImageView;
import android.widget.LinearLayout; import android.widget.LinearLayout;
import android.widget.TextView; import android.widget.TextView;
import net.micode.notes.R; import net.micode.notes.R;
import net.micode.notes.data.Notes; import net.micode.notes.data.Notes;
import net.micode.notes.tool.DataUtils; import net.micode.notes.tool.DataUtils;
import net.micode.notes.tool.ResourceParser.NoteItemBgResources; import net.micode.notes.tool.ResourceParser.NoteItemBgResources;
/** //创建便签列表项目选项
* @Package: public class NotesListItem extends LinearLayout {
* @Class: NotesListItem private ImageView mAlert;//闹钟图片
* @Author lenovo private TextView mTitle; //标题
* @Date 2024/1/18 15:43 private TextView mTime; //时间
* @Description: 主页面便签项的类 private TextView mCallName; //
*/ private NoteItemData mItemData; //标签数据
public class NotesListItem extends LinearLayout { private CheckBox mCheckBox; //打钩框
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); /*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);
}
private void setBackground(NoteItemData data) { mItemData = data;
int id = data.getBgColorId(); ///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.getType() == Notes.TYPE_NOTE) { if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
if (data.isSingle() || data.isOneFollowingFolder()) { mCallName.setVisibility(View.GONE);
setBackgroundResource(NoteItemBgResources.getNoteBgSingleRes(id)); mAlert.setVisibility(View.VISIBLE);
} else if (data.isLast()) { //设置该textview的style
setBackgroundResource(NoteItemBgResources.getNoteBgLastRes(id)); mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
} else if (data.isFirst() || data.isMultiFollowingFolder()) { //settext为设置内容
setBackgroundResource(NoteItemBgResources.getNoteBgFirstRes(id)); mTitle.setText(context.getString(R.string.call_record_folder_name)
} else { + context.getString(R.string.format_folder_files_count, data.getNotesCount()));
setBackgroundResource(NoteItemBgResources.getNoteBgNormalRes(id)); mAlert.setImageResource(R.drawable.call_record);
} } else if (data.getParentId() == Notes.ID_CALL_RECORD_FOLDER) {
} else { mCallName.setVisibility(View.VISIBLE);
setBackgroundResource(NoteItemBgResources.getFolderBgRes()); 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()));
public NoteItemData getItemData() { setBackground(data);
return mItemData; }
} //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
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@ -14,375 +14,517 @@
* limitations under the License. * limitations under the License.
*/ */
package net.micode.notes.ui; package net.micode.notes.ui;
import android.accounts.Account; import android.accounts.Account;
import android.accounts.AccountManager; import android.accounts.AccountManager;
import android.app.ActionBar; import android.app.ActionBar;
import android.app.AlertDialog; import android.app.AlertDialog;
import android.content.BroadcastReceiver; import android.content.BroadcastReceiver;
import android.content.ContentValues; import android.content.ContentValues;
import android.content.Context; import android.content.Context;
import android.content.DialogInterface; import android.content.DialogInterface;
import android.content.Intent; import android.content.Intent;
import android.content.IntentFilter; import android.content.IntentFilter;
import android.content.SharedPreferences; import android.content.SharedPreferences;
import android.os.Bundle; import android.os.Bundle;
import android.preference.Preference; import android.preference.Preference;
import android.preference.Preference.OnPreferenceClickListener; import android.preference.Preference.OnPreferenceClickListener;
import android.preference.PreferenceActivity; import android.preference.PreferenceActivity;
import android.preference.PreferenceCategory; import android.preference.PreferenceCategory;
import android.text.TextUtils; import android.text.TextUtils;
import android.text.format.DateFormat; import android.text.format.DateFormat;
import android.view.LayoutInflater; import android.view.LayoutInflater;
import android.view.Menu; import android.view.Menu;
import android.view.MenuItem; import android.view.MenuItem;
import android.view.View; import android.view.View;
import android.widget.Button; import android.widget.Button;
import android.widget.TextView; import android.widget.TextView;
import android.widget.Toast; import android.widget.Toast;
import net.micode.notes.R; import net.micode.notes.R;
import net.micode.notes.data.Notes; import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.gtask.remote.GTaskSyncService; import net.micode.notes.gtask.remote.GTaskSyncService;
/*
public class NotesPreferenceActivity extends PreferenceActivity { *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。
public static final String PREFERENCE_NAME = "notes_preferences"; * 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 static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name"; public class NotesPreferenceActivity extends PreferenceActivity {
public static final String PREFERENCE_NAME = "notes_preferences";
public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time"; //优先名
public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";
public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear"; //同步账号
public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";
private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key"; //同步时间
public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";
private static final String AUTHORITIES_FILTER_KEY = "authorities";
private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";
private PreferenceCategory mAccountCategory; //同步密码
private static final String AUTHORITIES_FILTER_KEY = "authorities";
private GTaskReceiver mReceiver; //本地密码
private PreferenceCategory mAccountCategory;
private Account[] mOriAccounts; //账户分组
private GTaskReceiver mReceiver;
private boolean mHasAddedAccount; //同步任务接收器
private Account[] mOriAccounts;
@Override //账户
protected void onCreate(Bundle icicle) { private boolean mHasAddedAccount;
super.onCreate(icicle); //账户的hash标记
/* using the app icon for navigation */ @Override
getActionBar().setDisplayHomeAsUpEnabled(true); /*
*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
addPreferencesFromResource(R.xml.preferences); *参数：Bundle icicle：存放了 activity 当前的状态
mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY); *函数实现：如下注释
mReceiver = new GTaskReceiver(); */
IntentFilter filter = new IntentFilter(); protected void onCreate(Bundle icicle) {
filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME); //先执行父类的创建函数
registerReceiver(mReceiver, filter); super.onCreate(icicle);
mOriAccounts = null; /* using the app icon for navigation */
View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null); getActionBar().setDisplayHomeAsUpEnabled(true);
getListView().addHeaderView(header, null, true); //给左上角图标的左边加上一个返回的图标
}
addPreferencesFromResource(R.xml.preferences);
@Override //添加xml来源并显示 xml
protected void onResume() { mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);
super.onResume(); //根据同步账户关键码来初始化分组
mReceiver = new GTaskReceiver();
// need to set sync account automatically if user has added a new IntentFilter filter = new IntentFilter();
// account filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME);
if (mHasAddedAccount) { registerReceiver(mReceiver, filter);
Account[] accounts = getGoogleAccounts(); //初始化同步组件
if (mOriAccounts != null && accounts.length > mOriAccounts.length) {
for (Account accountNew : accounts) { mOriAccounts = null;
boolean found = false; View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);
for (Account accountOld : mOriAccounts) { //获取listvivew，ListView的作用:用于列出所有选择
if (TextUtils.equals(accountOld.name, accountNew.name)) { getListView().addHeaderView(header, null, true);
found = true; //在listview组件上方添加其他组件
break; }
}
} @Override
if (!found) { /*
setSyncAccount(accountNew.name); * 函数功能：activity交互功能的实现，用于接受用户的输入
break; * 函数实现：如下注释
} */
} protected void onResume() {
} //先执行父类 的交互实现
} super.onResume();
refreshUI(); // need to set sync account automatically if user has added a new
} // account
if (mHasAddedAccount) {
@Override //若用户新加了账户则自动设置同步账户
protected void onDestroy() { Account[] accounts = getGoogleAccounts();
if (mReceiver != null) { //获取google同步账户
unregisterReceiver(mReceiver); if (mOriAccounts != null && accounts.length > mOriAccounts.length) {
} //若原账户不为空且当前账户有增加
super.onDestroy(); for (Account accountNew : accounts) {
} boolean found = false;
for (Account accountOld : mOriAccounts) {
private void loadAccountPreference() { if (TextUtils.equals(accountOld.name, accountNew.name)) {
mAccountCategory.removeAll(); //更新账户
found = true;
Preference accountPref = new Preference(this); break;
final String defaultAccount = getSyncAccountName(this); }
accountPref.setTitle(getString(R.string.preferences_account_title)); }
accountPref.setSummary(getString(R.string.preferences_account_summary)); if (!found) {
accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() { setSyncAccount(accountNew.name);
public boolean onPreferenceClick(Preference preference) { //若是没有找到旧的账户，那么同步账号中就只添加新账户
if (!GTaskSyncService.isSyncing()) { break;
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 refreshUI();
showChangeAccountConfirmAlertDialog(); //刷新标签界面
} }
} else {
Toast.makeText(NotesPreferenceActivity.this, @Override
R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT) /*
.show(); * 函数功能：销毁一个activity
} * 函数实现：如下注释
return true; */
} protected void onDestroy() {
}); if (mReceiver != null) {
unregisterReceiver(mReceiver);
mAccountCategory.addPreference(accountPref); //注销接收器
} }
super.onDestroy();
private void loadSyncButton() { //执行父类的销毁动作
Button syncButton = (Button) findViewById(R.id.preference_sync_button); }
TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
/*
// set button state * 函数功能：重新设置账户信息
if (GTaskSyncService.isSyncing()) { * 函数实现：如下注释
syncButton.setText(getString(R.string.preferences_button_sync_cancel)); */
syncButton.setOnClickListener(new View.OnClickListener() { private void loadAccountPreference() {
public void onClick(View v) { mAccountCategory.removeAll();
GTaskSyncService.cancelSync(NotesPreferenceActivity.this); //销毁所有的分组
} Preference accountPref = new Preference(this);
}); //建立首选项
} else { final String defaultAccount = getSyncAccountName(this);
syncButton.setText(getString(R.string.preferences_button_sync_immediately)); accountPref.setTitle(getString(R.string.preferences_account_title));
syncButton.setOnClickListener(new View.OnClickListener() { accountPref.setSummary(getString(R.string.preferences_account_summary));
public void onClick(View v) { //设置首选项的大标题和小标题
GTaskSyncService.startSync(NotesPreferenceActivity.this); accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
} public boolean onPreferenceClick(Preference preference) {
}); //建立监听器
} if (!GTaskSyncService.isSyncing()) {
syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this))); if (TextUtils.isEmpty(defaultAccount)) {
// the first time to set account
// set last sync time //若是第一次建立账户显示选择账户提示对话框
if (GTaskSyncService.isSyncing()) { showSelectAccountAlertDialog();
lastSyncTimeView.setText(GTaskSyncService.getProgressString()); } else {
lastSyncTimeView.setVisibility(View.VISIBLE); // if the account has already been set, we need to promp
} else { // user about the risk
long lastSyncTime = getLastSyncTime(this); //若是已经建立则显示修改对话框并进行修改操作
if (lastSyncTime != 0) { showChangeAccountConfirmAlertDialog();
lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time, }
DateFormat.format(getString(R.string.preferences_last_sync_time_format), } else {
lastSyncTime))); //若在没有同步的情况下，则在toast中显示不能修改
lastSyncTimeView.setVisibility(View.VISIBLE); Toast.makeText(NotesPreferenceActivity.this,
} else { R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT)
lastSyncTimeView.setVisibility(View.GONE); .show();
} }
} return true;
} }
});
private void refreshUI() {
loadAccountPreference(); //根据新建首选项编辑新的账户分组
loadSyncButton(); mAccountCategory.addPreference(accountPref);
} }
private void showSelectAccountAlertDialog() { /*
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this); *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
View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null); */
TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title); private void loadSyncButton() {
titleTextView.setText(getString(R.string.preferences_dialog_select_account_title)); Button syncButton = (Button) findViewById(R.id.preference_sync_button);
TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle); TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips)); //获取同步按钮控件和最终同步时间的的窗口
// set button state
dialogBuilder.setCustomTitle(titleView); //设置按钮的状态
dialogBuilder.setPositiveButton(null, null); if (GTaskSyncService.isSyncing()) {
//若是在同步状态下
Account[] accounts = getGoogleAccounts(); syncButton.setText(getString(R.string.preferences_button_sync_cancel));
String defAccount = getSyncAccountName(this); syncButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
mOriAccounts = accounts; GTaskSyncService.cancelSync(NotesPreferenceActivity.this);
mHasAddedAccount = false; }
});
if (accounts.length > 0) { //设置按钮显示的文本为“取消同步”以及监听器
CharSequence[] items = new CharSequence[accounts.length]; } else {
final CharSequence[] itemMapping = items; syncButton.setText(getString(R.string.preferences_button_sync_immediately));
int checkedItem = -1; syncButton.setOnClickListener(new View.OnClickListener() {
int index = 0; public void onClick(View v) {
for (Account account : accounts) { GTaskSyncService.startSync(NotesPreferenceActivity.this);
if (TextUtils.equals(account.name, defAccount)) { }
checkedItem = index; });
} //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
items[index++] = account.name; }
} syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));
dialogBuilder.setSingleChoiceItems(items, checkedItem, //设置按键可用还是不可用
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) { // set last sync time
setSyncAccount(itemMapping[which].toString()); // 设置最终同步时间
dialog.dismiss(); if (GTaskSyncService.isSyncing()) {
refreshUI(); //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 {
View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null); //若是非同步情况
dialogBuilder.setView(addAccountView); long lastSyncTime = getLastSyncTime(this);
if (lastSyncTime != 0) {
final AlertDialog dialog = dialogBuilder.show(); lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time,
addAccountView.setOnClickListener(new View.OnClickListener() { DateFormat.format(getString(R.string.preferences_last_sync_time_format),
public void onClick(View v) { lastSyncTime)));
mHasAddedAccount = true; lastSyncTimeView.setVisibility(View.VISIBLE);
Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS"); //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
intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] { } else {
"gmail-ls" //若时间为空直接设置为不可见状态
}); lastSyncTimeView.setVisibility(View.GONE);
startActivityForResult(intent, -1); }
dialog.dismiss(); }
} }
}); /*
} *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 showChangeAccountConfirmAlertDialog() { */
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this); private void refreshUI() {
loadAccountPreference();
View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null); loadSyncButton();
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); * 函数功能：显示账户选择的对话框并进行账户的设置
subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg)); * 函数实现：如下注释
dialogBuilder.setCustomTitle(titleView); */
private void showSelectAccountAlertDialog() {
CharSequence[] menuItemArray = new CharSequence[] { AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
getString(R.string.preferences_menu_change_account), //创建一个新的对话框
getString(R.string.preferences_menu_remove_account),
getString(R.string.preferences_menu_cancel) View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
}; TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() { titleTextView.setText(getString(R.string.preferences_dialog_select_account_title));
public void onClick(DialogInterface dialog, int which) { TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
if (which == 0) { subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips));
showSelectAccountAlertDialog(); //设置标题以及子标题的内容
} else if (which == 1) { dialogBuilder.setCustomTitle(titleView);
removeSyncAccount(); dialogBuilder.setPositiveButton(null, null);
refreshUI(); //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
dialogBuilder.show(); mOriAccounts = accounts;
} mHasAddedAccount = false;
private Account[] getGoogleAccounts() { if (accounts.length > 0) {
AccountManager accountManager = AccountManager.get(this); //若账户不为空
return accountManager.getAccountsByType("com.google"); CharSequence[] items = new CharSequence[accounts.length];
} final CharSequence[] itemMapping = items;
int checkedItem = -1;
private void setSyncAccount(String account) { int index = 0;
if (!getSyncAccountName(this).equals(account)) { for (Account account : accounts) {
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); if (TextUtils.equals(account.name, defAccount)) {
SharedPreferences.Editor editor = settings.edit(); checkedItem = index;
if (account != null) { //在账户列表中查询到所需账户
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account); }
} else { items[index++] = account.name;
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, ""); }
} dialogBuilder.setSingleChoiceItems(items, checkedItem,
editor.commit(); //在对话框建立一个单选的复选框
new DialogInterface.OnClickListener() {
// clean up last sync time public void onClick(DialogInterface dialog, int which) {
setLastSyncTime(this, 0); setSyncAccount(itemMapping[which].toString());
dialog.dismiss();
// clean up local gtask related info //取消对话框
new Thread(new Runnable() { refreshUI();
public void run() { }
ContentValues values = new ContentValues(); //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
values.put(NoteColumns.GTASK_ID, ""); });
values.put(NoteColumns.SYNC_ID, 0); //建立对话框网络版的监听器
getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null); }
}
}).start(); View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);
dialogBuilder.setView(addAccountView);
Toast.makeText(NotesPreferenceActivity.this, //给新加账户对话框设置自定义样式
getString(R.string.preferences_toast_success_set_accout, account),
Toast.LENGTH_SHORT).show(); final AlertDialog dialog = dialogBuilder.show();
} //显示对话框
} addAccountView.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
private void removeSyncAccount() { mHasAddedAccount = true;
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE); //将新加账户的hash置true
SharedPreferences.Editor editor = settings.edit(); Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");
if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) { //建立网络建立组件
editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME); intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] {
} "gmail-ls"
if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) { });
editor.remove(PREFERENCE_LAST_SYNC_TIME); startActivityForResult(intent, -1);
} //跳回上一个选项
editor.commit(); dialog.dismiss();
}
// clean up local gtask related info });
new Thread(new Runnable() { //建立新加账户对话框的监听器
public void run() { }
ContentValues values = new ContentValues();
values.put(NoteColumns.GTASK_ID, ""); /*
values.put(NoteColumns.SYNC_ID, 0); * 函数功能：显示账户选择对话框和相关账户操作
getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null); * 函数实现：如下注释
} */
}).start(); private void showChangeAccountConfirmAlertDialog() {
} AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
//创建一个新的对话框
public static String getSyncAccountName(Context context) { View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
Context.MODE_PRIVATE); titleTextView.setText(getString(R.string.preferences_dialog_change_account_title,
return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, ""); getSyncAccountName(this)));
} TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg));
public static void setLastSyncTime(Context context, long time) { //根据同步修改的账户信息设置标题以及子标题的内容
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, dialogBuilder.setCustomTitle(titleView);
Context.MODE_PRIVATE); //设置对话框的自定义标题
SharedPreferences.Editor editor = settings.edit(); CharSequence[] menuItemArray = new CharSequence[] {
editor.putLong(PREFERENCE_LAST_SYNC_TIME, time); getString(R.string.preferences_menu_change_account),
editor.commit(); getString(R.string.preferences_menu_remove_account),
} getString(R.string.preferences_menu_cancel)
};
public static long getLastSyncTime(Context context) { //定义一些标记字符串
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() {
Context.MODE_PRIVATE); //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
return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0); public void onClick(DialogInterface dialog, int which) {
} //按键功能，由which来决定
if (which == 0) {
private class GTaskReceiver extends BroadcastReceiver { //进入账户选择对话框
showSelectAccountAlertDialog();
@Override } else if (which == 1) {
public void onReceive(Context context, Intent intent) { //删除账户并且跟新便签界面
refreshUI(); removeSyncAccount();
if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) { refreshUI();
TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview); }
syncStatus.setText(intent }
.getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG)); });
} dialogBuilder.show();
//显示对话框
} }
}
/*
public boolean onOptionsItemSelected(MenuItem item) { *函数功能：获取谷歌账户
switch (item.getItemId()) { *函数实现：通过账户管理器直接获取
case android.R.id.home: */
Intent intent = new Intent(this, NotesListActivity.class); private Account[] getGoogleAccounts() {
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); AccountManager accountManager = AccountManager.get(this);
startActivity(intent); return accountManager.getAccountsByType("com.google");
return true; }
default:
return false; /*
} * 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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