Merge pull request '背景更改功能完成' (#4) from yeah into master

java/net/micode/notes/ui/AlarmAlertActivity.java

@@ -14,12 +14,8 @@
  * limitations under the License.
  */
 
-/*
- * 版权声明和许可证信息（略）
- */
 package net.micode.notes.ui;
 
-// 导入Android基础组件
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.content.Context;
@@ -27,13 +23,9 @@ import android.content.DialogInterface;
 import android.content.DialogInterface.OnClickListener;
 import android.content.DialogInterface.OnDismissListener;
 import android.content.Intent;
-
-// 导入音频相关组件
 import android.media.AudioManager;
 import android.media.MediaPlayer;
 import android.media.RingtoneManager;
-
-// 导入Android系统服务相关
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.PowerManager;
@@ -41,104 +33,104 @@ import android.provider.Settings;
 import android.view.Window;
 import android.view.WindowManager;
 
-// 导入项目资源
 import net.micode.notes.R;
 import net.micode.notes.data.Notes;
 import net.micode.notes.tool.DataUtils;
 
 import java.io.IOException;
 
-/**
- * 闹钟提醒活动 - 负责处理便签提醒触发时的界面和声音播放
- * 实现对话框按钮点击监听器和对话框关闭监听器
- */
+
 public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener {
-    private long mNoteId; // 用于存储便签ID
-    private String mSnippet; // 用于存储便签摘要
-    private static final int SNIPPET_PREW_MAX_LEN = 60; // 便签摘要的最大长度
-    MediaPlayer mPlayer; // 用于播放闹钟声音的MediaPlayer对象
+    private long mNoteId;
+    private String mSnippet;
+    private static final int SNIPPET_PREW_MAX_LEN = 60;
+    MediaPlayer mPlayer;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        requestWindowFeature(Window.FEATURE_NO_TITLE); // 隐藏标题栏
+        requestWindowFeature(Window.FEATURE_NO_TITLE);
 
         final Window win = getWindow();
-        win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); // 设置窗口在锁屏状态下显示
+        win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
 
-        if (!isScreenOn()) { // 如果屏幕未点亮，则设置相关标志以点亮屏幕
+        if (!isScreenOn()) {
             win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
                     | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
                     | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
                     | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR);
         }
 
-        Intent intent = getIntent(); // 获取启动此活动的Intent
+        Intent intent = getIntent();
 
         try {
-            mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1)); // 从Intent中获取便签ID
-            mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId); // 根据ID获取便签摘要
+            mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
+            mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
             mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0,
                     SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
-                    : mSnippet; // 截取摘要并添加额外信息
+                    : mSnippet;
         } catch (IllegalArgumentException e) {
             e.printStackTrace();
             return;
         }
 
-        mPlayer = new MediaPlayer(); // 创建MediaPlayer对象
-        if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) { // 检查便签是否可见
-            showActionDialog(); // 显示操作对话框
-            playAlarmSound(); // 播放闹钟声音
+        mPlayer = new MediaPlayer();
+        if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
+            showActionDialog();
+            playAlarmSound();
         } else {
-            finish(); // 如果便签不可见，则结束活动
+            finish();
         }
     }
 
-    private boolean isScreenOn() { // 检查屏幕是否点亮
+    private boolean isScreenOn() {
         PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
         return pm.isScreenOn();
     }
 
-    private void playAlarmSound() { // 播放闹钟声音
-        Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM); // 获取默认闹钟铃声URI
+    private void playAlarmSound() {
+        Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);
 
         int silentModeStreams = Settings.System.getInt(getContentResolver(),
-                Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0); // 获取静音模式下受影响的音频流类型
+                Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
 
-        if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) { // 如果闹钟声音被静音，则设置MediaPlayer的音频流类型
+        if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) {
             mPlayer.setAudioStreamType(silentModeStreams);
         } else {
             mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
         }
         try {
-            mPlayer.setDataSource(this, url); // 设置MediaPlayer的数据源
-            mPlayer.prepare(); // 准备播放
-            mPlayer.setLooping(true); // 设置循环播放
-            mPlayer.start(); // 开始播放
+            mPlayer.setDataSource(this, url);
+            mPlayer.prepare();
+            mPlayer.setLooping(true);
+            mPlayer.start();
         } catch (IllegalArgumentException e) {
+            // TODO Auto-generated catch block
             e.printStackTrace();
         } catch (SecurityException e) {
+            // TODO Auto-generated catch block
             e.printStackTrace();
         } catch (IllegalStateException e) {
+            // TODO Auto-generated catch block
             e.printStackTrace();
         } catch (IOException e) {
+            // TODO Auto-generated catch block
             e.printStackTrace();
         }
     }
 
-    private void showActionDialog() { // 显示操作对话框
+    private void showActionDialog() {
         AlertDialog.Builder dialog = new AlertDialog.Builder(this);
-        dialog.setTitle(R.string.app_name); // 设置对话框标题
-        dialog.setMessage(mSnippet); // 设置对话框消息
-        dialog.setPositiveButton(R.string.notealert_ok, this); // 设置确定按钮及其监听器
+        dialog.setTitle(R.string.app_name);
+        dialog.setMessage(mSnippet);
+        dialog.setPositiveButton(R.string.notealert_ok, this);
         if (isScreenOn()) {
-            dialog.setNegativeButton(R.string.notealert_enter, this); // 如果屏幕已点亮，则设置取消按钮及其监听器
+            dialog.setNegativeButton(R.string.notealert_enter, this);
         }
-        dialog.show().setOnDismissListener(this); // 显示对话框并设置关闭监听器
+        dialog.show().setOnDismissListener(this);
     }
 
-    public void onClick(DialogInterface dialog, int which) { // 对话框按钮点击事件处理
+    public void onClick(DialogInterface dialog, int which) {
         switch (which) {
             case DialogInterface.BUTTON_NEGATIVE:
                 Intent intent = new Intent(this, NoteEditActivity.class);
@@ -151,16 +143,16 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
         }
     }
 
-    public void onDismiss(DialogInterface dialog) { // 对话框关闭事件处理
-        stopAlarmSound(); // 停止闹钟声音
-        finish(); // 结束活动
+    public void onDismiss(DialogInterface dialog) {
+        stopAlarmSound();
+        finish();
     }
 
-    private void stopAlarmSound() { // 停止闹钟声音
+    private void stopAlarmSound() {
         if (mPlayer != null) {
-            mPlayer.stop(); // 停止播放
-            mPlayer.release(); // 释放资源
-            mPlayer = null; // 置空引用
+            mPlayer.stop();
+            mPlayer.release();
+            mPlayer = null;
         }
     }
-}
+}

java/net/micode/notes/ui/AlarmInitReceiver.java

@@ -16,7 +16,6 @@
 
 package net.micode.notes.ui;
 
-// 导入Android系统服务相关
 import android.app.AlarmManager;
 import android.app.PendingIntent;
 import android.content.BroadcastReceiver;
@@ -25,59 +24,42 @@ import android.content.Context;
 import android.content.Intent;
 import android.database.Cursor;
 
-// 导入项目数据模型和常量
 import net.micode.notes.data.Notes;
 import net.micode.notes.data.Notes.NoteColumns;
 
-/**
- * 闹钟初始化广播接收器 - 用于在系统启动或时间变更时重新设置所有未触发的便签提醒
- * 继承自BroadcastReceiver，监听系统广播事件
- */
+
 public class AlarmInitReceiver extends BroadcastReceiver {
 
-    // 数据库查询投影列（需要查询的字段）
     private static final String [] PROJECTION = new String [] {
-            NoteColumns.ID,          // 便签ID列
-            NoteColumns.ALERTED_DATE // 提醒时间列
+        NoteColumns.ID,
+        NoteColumns.ALERTED_DATE
     };
 
-    // 列索引常量
-    private static final int COLUMN_ID                = 0; // ID列的索引
-    private static final int COLUMN_ALERTED_DATE      = 1; // 提醒时间列的索引
+    private static final int COLUMN_ID                = 0;
+    private static final int COLUMN_ALERTED_DATE      = 1;
 
     @Override
     public void onReceive(Context context, Intent intent) {
-        long currentDate = System.currentTimeMillis(); // 获取当前系统时间
-
-        // 查询内容提供者获取需要设置提醒的便签
-        Cursor c = context.getContentResolver().query(
-                Notes.CONTENT_NOTE_URI,    // 便签内容URI
-                PROJECTION,                // 需要查询的列
-                NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE, // 筛选条件：提醒时间未过期且类型为普通便签
-                new String[] { String.valueOf(currentDate) }, // 当前时间作为筛选参数
-                null); // 排序方式（无）
+        long currentDate = System.currentTimeMillis();
+        Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
+                PROJECTION,
+                NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,
+                new String[] { String.valueOf(currentDate) },
+                null);
 
         if (c != null) {
-            if (c.moveToFirst()) { // 游标移动到第一条记录
+            if (c.moveToFirst()) {
                 do {
-                    long alertDate = c.getLong(COLUMN_ALERTED_DATE); // 获取提醒时间
-
-                    // 创建发送给AlarmReceiver的Intent
+                    long alertDate = c.getLong(COLUMN_ALERTED_DATE);
                     Intent sender = new Intent(context, AlarmReceiver.class);
-                    // 设置数据URI：Note内容URI + 当前便签ID
                     sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));
-
-                    // 创建PendingIntent（延迟触发的广播）
                     PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);
-
-                    // 获取系统闹钟服务
-                    AlarmManager alarmManager = (AlarmManager) context
+                    AlarmManager alermManager = (AlarmManager) context
                             .getSystemService(Context.ALARM_SERVICE);
-                    // 设置精确闹钟（RTC_WAKEUP会在指定时间唤醒设备）
-                    alarmManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
-                } while (c.moveToNext()); // 循环处理下一条记录
+                    alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
+                } while (c.moveToNext());
             }
-            c.close(); // 关闭游标释放资源
+            c.close();
         }
     }
-}
+}

java/net/micode/notes/ui/AlarmReceiver.java

@@ -1,39 +1,30 @@
 /*
- * 版权声明，指明代码归属于MiCode开源社区
- * 遵循Apache License 2.0协议
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package net.micode.notes.ui;
 
-// 导入必要的Android类
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 
-/**
- * 闹钟接收器类，继承自BroadcastReceiver
- * 功能：处理系统闹钟广播，当预设提醒时间到达时触发提醒
- */
-
-
-
-//111111111111111
-//    11111111111
 public class AlarmReceiver extends BroadcastReceiver {
-    /**
-     * 广播接收处理方法
-     * @param context 当前上下文环境（应用上下文）
-     * @param intent 接收到的广播意图（包含闹钟信息）
-     */
     @Override
     public void onReceive(Context context, Intent intent) {
-        // 将接收到的意图重定向到闹钟提醒Activity
         intent.setClass(context, AlarmAlertActivity.class);
-
-        // 添加新的任务栈标识（因为可能从非Activity环境启动Activity）
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-
-        // 启动闹钟提醒界面Activity
         context.startActivity(intent);
     }
-}
+}

java/net/micode/notes/ui/DateTimePicker.java

@@ -1,6 +1,17 @@
 /*
- * 版权声明和许可证信息：
- * 该代码遵循 Apache License 2.0 协议，由 MiCode 开源社区提供。
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package net.micode.notes.ui;
@@ -10,102 +21,64 @@ import java.util.Calendar;
 
 import net.micode.notes.R;
 
+
 import android.content.Context;
 import android.text.format.DateFormat;
 import android.view.View;
 import android.widget.FrameLayout;
 import android.widget.NumberPicker;
 
-/**
- * DateTimePicker 是一个自定义的日期时间选择控件，继承自 FrameLayout。
- */
 public class DateTimePicker extends FrameLayout {
 
-    // 默认启用状态
     private static final boolean DEFAULT_ENABLE_STATE = true;
 
-    // 一天中的小时数（12小时制）
     private static final int HOURS_IN_HALF_DAY = 12;
-    // 一天中的小时数（24小时制）
     private static final int HOURS_IN_ALL_DAY = 24;
-    // 一周中的天数
     private static final int DAYS_IN_ALL_WEEK = 7;
-
-    // 日期选择器的最小值
     private static final int DATE_SPINNER_MIN_VAL = 0;
-    // 日期选择器的最大值（一周的天数减一）
     private static final int DATE_SPINNER_MAX_VAL = DAYS_IN_ALL_WEEK - 1;
-
-    // 24小时制下小时选择器的最小值
     private static final int HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW = 0;
-    // 24小时制下小时选择器的最大值
     private static final int HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW = 23;
-
-    // 12小时制下小时选择器的最小值
     private static final int HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW = 1;
-    // 12小时制下小时选择器的最大值
     private static final int HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW = 12;
-
-    // 分钟选择器的最小值
     private static final int MINUT_SPINNER_MIN_VAL = 0;
-    // 分钟选择器的最大值
     private static final int MINUT_SPINNER_MAX_VAL = 59;
-
-    // 上午/下午选择器的最小值
     private static final int AMPM_SPINNER_MIN_VAL = 0;
-    // 上午/下午选择器的最大值
     private static final int AMPM_SPINNER_MAX_VAL = 1;
 
-    // 日期选择器组件
     private final NumberPicker mDateSpinner;
-    // 小时选择器组件
     private final NumberPicker mHourSpinner;
-    // 分钟选择器组件
     private final NumberPicker mMinuteSpinner;
-    // 上午/下午选择器组件
     private final NumberPicker mAmPmSpinner;
-
-    // 当前选中的日期
     private Calendar mDate;
 
-    // 用于显示日期的字符串数组
     private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];
 
-    // 是否是上午
     private boolean mIsAm;
 
-    // 是否为24小时制视图
     private boolean mIs24HourView;
 
-    // 控件是否启用
     private boolean mIsEnabled = DEFAULT_ENABLE_STATE;
 
-    // 是否正在初始化
     private boolean mInitialising;
 
-    // 日期时间变化监听器
     private OnDateTimeChangedListener mOnDateTimeChangedListener;
 
-    // 日期选择器值变化监听器
     private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() {
         @Override
         public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
-            // 更新日期
             mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal);
             updateDateControl();
             onDateTimeChanged();
         }
     };
 
-
-    // 小时选择器值变化监听器
     private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() {
         @Override
         public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
             boolean isDateChanged = false;
             Calendar cal = Calendar.getInstance();
             if (!mIs24HourView) {
-                // 处理12小时制下的日期变化
                 if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) {
                     cal.setTimeInMillis(mDate.getTimeInMillis());
                     cal.add(Calendar.DAY_OF_YEAR, 1);
@@ -115,14 +88,12 @@ public class DateTimePicker extends FrameLayout {
                     cal.add(Calendar.DAY_OF_YEAR, -1);
                     isDateChanged = true;
                 }
-                // 切换上午/下午状态
                 if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY ||
                         oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
                     mIsAm = !mIsAm;
                     updateAmPmControl();
                 }
             } else {
-                // 处理24小时制下的日期变化
                 if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) {
                     cal.setTimeInMillis(mDate.getTimeInMillis());
                     cal.add(Calendar.DAY_OF_YEAR, 1);
@@ -133,11 +104,9 @@ public class DateTimePicker extends FrameLayout {
                     isDateChanged = true;
                 }
             }
-            // 更新小时并设置到日历对象中
             int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY);
             mDate.set(Calendar.HOUR_OF_DAY, newHour);
             onDateTimeChanged();
-            // 如果日期发生变化，则更新年、月、日
             if (isDateChanged) {
                 setCurrentYear(cal.get(Calendar.YEAR));
                 setCurrentMonth(cal.get(Calendar.MONTH));
@@ -146,256 +115,142 @@ public class DateTimePicker extends FrameLayout {
         }
     };
 
-    /**
-     * 分钟选择器值变化监听器，用于处理分钟变化时的逻辑。
-     */
     private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() {
         @Override
         public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
-            // 获取分钟选择器的最小值和最大值（0 和 59）
             int minValue = mMinuteSpinner.getMinValue();
             int maxValue = mMinuteSpinner.getMaxValue();
             int offset = 0;
-
-            /*
-             * 如果分钟从最大值变为最小值（如 59 -> 0），表示时间向前推进了一小时；
-             * 如果分钟从最小值变为最大值（如 0 -> 59），表示时间回退了一小时。
-             */
             if (oldVal == maxValue && newVal == minValue) {
-                offset += 1; // 增加一小时
+                offset += 1;
             } else if (oldVal == minValue && newVal == maxValue) {
-                offset -= 1; // 减少一小时
+                offset -= 1;
             }
-
-            // 如果有小时偏移（即跨了小时）
             if (offset != 0) {
-                // 更新日历中的小时值
                 mDate.add(Calendar.HOUR_OF_DAY, offset);
-                // 同步更新小时选择器的显示值
                 mHourSpinner.setValue(getCurrentHour());
-
-                // 更新日期控件（可能跨天）
                 updateDateControl();
-
-                // 获取当前小时（24小时制）
                 int newHour = getCurrentHourOfDay();
-
-                /*
-                 * 根据当前小时判断是 AM 还是 PM，并更新 AM/PM 选择器的状态：
-                 * - 如果小时 >= 12，则为 PM；
-                 * - 否则为 AM。
-                 */
                 if (newHour >= HOURS_IN_HALF_DAY) {
                     mIsAm = false;
-                    updateAmPmControl(); // 更新 AM/PM 显示
+                    updateAmPmControl();
                 } else {
                     mIsAm = true;
-                    updateAmPmControl(); // 更新 AM/PM 显示
+                    updateAmPmControl();
                 }
             }
-
-            // 设置新的分钟值到日历对象中
             mDate.set(Calendar.MINUTE, newVal);
-
-            // 触发日期时间变化的回调
             onDateTimeChanged();
         }
     };
 
-    /**
-     * AM/PM 选择器值变化监听器，用于处理 AM/PM 切换时的时间调整逻辑。
-     */
     private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() {
         @Override
         public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
-            // 切换 AM/PM 状态（true 表示 AM，false 表示 PM）
             mIsAm = !mIsAm;
-
-            // 根据当前是 AM 还是 PM 调整小时数：
             if (mIsAm) {
-                // 如果切换为 AM，则减去 12 小时
                 mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY);
             } else {
-                // 如果切换为 PM，则加上 12 小时
                 mDate.add(Calendar.HOUR_OF_DAY, HOURS_IN_HALF_DAY);
             }
-
-            // 更新 AM/PM 控件显示状态
             updateAmPmControl();
-
-            // 通知外部监听器日期时间已发生变化
             onDateTimeChanged();
         }
     };
 
-
-    /**
-     * 日期时间变化监听器接口，用于通知外部监听者日期或时间发生了变化。
-     */
     public interface OnDateTimeChangedListener {
-        /**
-         * 当日期或时间发生变化时调用此方法。
-         *
-         * @param view       发生变化的 DateTimePicker 实例
-         * @param year       当前选择的年份
-         * @param month      当前选择的月份（0 表示一月）
-         * @param dayOfMonth 当前选择的日期（月份中的第几天）
-         * @param hourOfDay  当前选择的小时（24小时制）
-         * @param minute     当前选择的分钟
-         */
         void onDateTimeChanged(DateTimePicker view, int year, int month,
-                               int dayOfMonth, int hourOfDay, int minute);
+                int dayOfMonth, int hourOfDay, int minute);
     }
 
-    /**
-     * 构造函数：使用默认的时间（当前系统时间）创建一个 DateTimePicker 实例。
-     */
     public DateTimePicker(Context context) {
         this(context, System.currentTimeMillis());
     }
 
-    /**
-     * 构造函数：使用指定的时间创建 DateTimePicker 实例，
-     * 并根据系统设置自动判断是否使用 24 小时制。
-     *
-     * @param context 上下文环境，通常为 Activity 或 Application
-     * @param date    初始时间，以毫秒为单位的时间戳
-     */
     public DateTimePicker(Context context, long date) {
         this(context, date, DateFormat.is24HourFormat(context));
     }
 
-
-    /**
-     * 完整构造函数：创建 DateTimePicker 实例，并初始化所有 UI 组件和逻辑。
-     *
-     * @param context      上下文环境
-     * @param date         初始时间，以毫秒为单位的时间戳
-     * @param is24HourView 是否使用 24 小时制显示时间
-     */
     public DateTimePicker(Context context, long date, boolean is24HourView) {
         super(context);
-
-        // 初始化 Calendar 对象，用于保存当前选择的日期时间
         mDate = Calendar.getInstance();
-
-        // 标记为正在初始化中（避免监听器在初始化过程中触发不必要的回调）
         mInitialising = true;
-
-        // 判断当前是否为 AM（小时 >= 12 表示 PM）
         mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY;
-
-        // 加载布局文件 R.layout.datetime_picker 并添加到当前 FrameLayout 中
         inflate(context, R.layout.datetime_picker, this);
 
-        // 初始化日期选择器 NumberPicker
         mDateSpinner = (NumberPicker) findViewById(R.id.date);
-        mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL);  // 设置最小值为 0
-        mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL);  // 设置最大值为 6（一周7天）
-        mDateSpinner.setOnValueChangedListener(mOnDateChangedListener); // 设置监听器
+        mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL);
+        mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL);
+        mDateSpinner.setOnValueChangedListener(mOnDateChangedListener);
 
-        // 初始化小时选择器 NumberPicker
         mHourSpinner = (NumberPicker) findViewById(R.id.hour);
-        mHourSpinner.setOnValueChangedListener(mOnHourChangedListener); // 设置监听器
+        mHourSpinner.setOnValueChangedListener(mOnHourChangedListener);
+        mMinuteSpinner =  (NumberPicker) findViewById(R.id.minute);
+        mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL);
+        mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL);
+        mMinuteSpinner.setOnLongPressUpdateInterval(100);
+        mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener);
 
-        // 初始化分钟选择器 NumberPicker
-        mMinuteSpinner = (NumberPicker) findViewById(R.id.minute);
-        mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL);  // 设置最小值为 0
-        mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL);  // 设置最大值为 59
-        mMinuteSpinner.setOnLongPressUpdateInterval(100);   // 长按递增间隔时间为 100ms
-        mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener); // 设置监听器
-
-        // 获取 AM/PM 的本地化字符串（如 "AM", "PM"）
         String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings();
-
-        // 初始化 AM/PM 选择器 NumberPicker
         mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm);
-        mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL);  // 设置最小值为 0
-        mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL);  // 设置最大值为 1
-        mAmPmSpinner.setDisplayedValues(stringsForAmPm); // 设置显示值为 "AM"/"PM"
-        mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener); // 设置监听器
+        mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL);
+        mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL);
+        mAmPmSpinner.setDisplayedValues(stringsForAmPm);
+        mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);
 
-        // 初始化各控件的显示状态
-        updateDateControl();   // 更新日期选择器显示
-        updateHourControl();   // 更新小时选择器显示
-        updateAmPmControl();   // 更新 AM/PM 显示状态
+        // update controls to initial state
+        updateDateControl();
+        updateHourControl();
+        updateAmPmControl();
 
-        // 设置是否启用 24 小时制视图
         set24HourView(is24HourView);
 
-        // 设置初始日期时间
+        // set to current time
         setCurrentDate(date);
 
-        // 设置控件的启用状态
         setEnabled(isEnabled());
 
-        // 设置内容描述等辅助功能信息（未展示具体实现）
-
-        // 结束初始化过程
+        // set the content descriptions
         mInitialising = false;
     }
 
-
-    /**
-     * 重写 setEnabled 方法，用于控制 DateTimePicker 及其内部所有子控件的启用/禁用状态。
-     *
-     * @param enabled true 表示启用，false 表示禁用
-     */
     @Override
     public void setEnabled(boolean enabled) {
-        // 如果当前状态与目标状态相同，则无需处理
         if (mIsEnabled == enabled) {
             return;
         }
-
-        // 调用父类方法设置自身启用状态
         super.setEnabled(enabled);
-
-        // 设置各个 NumberPicker 子控件的启用状态
-        mDateSpinner.setEnabled(enabled);     // 日期选择器
-        mMinuteSpinner.setEnabled(enabled);   // 分钟选择器
-        mHourSpinner.setEnabled(enabled);     // 小时选择器
-        mAmPmSpinner.setEnabled(enabled);     // AM/PM 选择器
-
-        // 更新当前控件的启用状态标志
+        mDateSpinner.setEnabled(enabled);
+        mMinuteSpinner.setEnabled(enabled);
+        mHourSpinner.setEnabled(enabled);
+        mAmPmSpinner.setEnabled(enabled);
         mIsEnabled = enabled;
     }
 
-
-    /**
-     * 重写 isEnabled 方法，返回当前控件的启用状态。
-     *
-     * @return 如果控件可用则返回 true，否则返回 false
-     */
     @Override
     public boolean isEnabled() {
-        return mIsEnabled; // 返回内部保存的启用状态标志
+        return mIsEnabled;
     }
 
     /**
-     * 获取当前选择的日期时间（以毫秒为单位的时间戳）。
+     * Get the current date in millis
      *
-     * @return 当前日期时间对应的毫秒值
+     * @return the current date in millis
      */
     public long getCurrentDateInTimeMillis() {
-        return mDate.getTimeInMillis(); // 返回 Calendar 对象中的时间戳
+        return mDate.getTimeInMillis();
     }
 
     /**
-     * 设置当前日期时间。
+     * Set the current date
      *
-     * @param date 给定的初始时间，以毫秒为单位的时间戳
+     * @param date The current date in millis
      */
     public void setCurrentDate(long date) {
         Calendar cal = Calendar.getInstance();
-        cal.setTimeInMillis(date); // 将时间戳转换为 Calendar 对象
-
-        // 调用另一个方法设置年、月、日、小时、分钟
-        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.setTimeInMillis(date);
+        setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH),
+                cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE));
     }
 
     /**
@@ -407,338 +262,224 @@ public class DateTimePicker extends FrameLayout {
      * @param hourOfDay The current hourOfDay
      * @param minute The current minute
      */
-    /**
-     * 设置当前日期和时间。
-     *
-     * @param year      年份（例如 2025）
-     * @param month     月份（0 表示一月，11 表示十二月）
-     * @param dayOfMonth 月份中的第几天（从 1 开始）
-     * @param hourOfDay 小时（24小时制，0~23）
-     * @param minute    分钟（0~59）
-     */
-    public void setCurrentDate(int year, int month, int dayOfMonth, int hourOfDay, int minute) {
-        // 设置年份
+    public void setCurrentDate(int year, int month,
+            int dayOfMonth, int hourOfDay, int minute) {
         setCurrentYear(year);
-
-        // 设置月份
         setCurrentMonth(month);
-
-        // 设置日
         setCurrentDay(dayOfMonth);
-
-        // 设置小时
         setCurrentHour(hourOfDay);
-
-        // 设置分钟
         setCurrentMinute(minute);
     }
 
-
     /**
      * Get current year
      *
      * @return The current year
      */
-
-    /**
-     * 获取当前选择的年份。
-     *
-     * @return 返回当前 Calendar 对象中的年份值（例如 2025）
-     */
     public int getCurrentYear() {
         return mDate.get(Calendar.YEAR);
     }
 
     /**
-     * 设置当前选择的年份，并更新相关的 UI 控件和监听器。
+     * Set current year
      *
-     * @param year 要设置的年份，例如 2025
+     * @param year The current year
      */
     public void setCurrentYear(int year) {
-        // 如果不是初始化阶段，并且新值与当前年份相同，则无需处理
         if (!mInitialising && year == getCurrentYear()) {
             return;
         }
-
-        // 更新 Calendar 对象中的年份
         mDate.set(Calendar.YEAR, year);
-
-        // 更新日期控件（如 NumberPicker 显示）
         updateDateControl();
-
-        // 触发日期时间变化的回调事件
         onDateTimeChanged();
     }
 
     /**
-     * 获取当前选择的月份。
+     * Get current month in the year
      *
-     * @return 返回当前 Calendar 对象中的月份值（0 表示一月，11 表示十二月）
+     * @return The current month in the year
      */
     public int getCurrentMonth() {
         return mDate.get(Calendar.MONTH);
     }
 
     /**
-     * 设置当前选择的月份，并更新相关的 UI 控件和监听器。
+     * Set current month in the year
      *
-     * @param month 要设置的月份（0 表示一月，11 表示十二月）
+     * @param month The month in the year
      */
     public void setCurrentMonth(int month) {
-        // 如果不是初始化阶段，并且新值与当前月份相同，则无需处理
         if (!mInitialising && month == getCurrentMonth()) {
             return;
         }
-
-        // 更新 Calendar 对象中的月份
         mDate.set(Calendar.MONTH, month);
-
-        // 更新日期控件（如星期几等显示内容）
         updateDateControl();
-
-        // 触发日期时间变化的回调事件
         onDateTimeChanged();
     }
 
     /**
-     * 获取当前选择的日期（即一个月中的第几天）。
+     * Get current day of the month
      *
-     * @return 返回当前 Calendar 对象中的日值（1 ~ 31）
+     * @return The day of the month
      */
     public int getCurrentDay() {
         return mDate.get(Calendar.DAY_OF_MONTH);
     }
 
-
     /**
-     * 设置当前选择的日期（即一个月中的第几天）。
+     * Set current day of the month
      *
-     * @param dayOfMonth 要设置的具体日期，范围为 1 ~ 31
+     * @param dayOfMonth The day of the month
      */
     public void setCurrentDay(int dayOfMonth) {
-        // 如果不是初始化阶段，并且新值与当前日期相同，则无需处理
         if (!mInitialising && dayOfMonth == getCurrentDay()) {
             return;
         }
-
-        // 更新 Calendar 对象中的日期（即月中的第几天）
         mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
-
-        // 更新日期控件（如星期几等显示内容）
         updateDateControl();
-
-        // 触发日期时间变化的回调事件
         onDateTimeChanged();
     }
 
-
     /**
-     * 获取当前小时（24小时制）。
-     *
-     * @return 返回 Calendar 对象中的小时值（0 ~ 23）
+     * Get current hour in 24 hour mode, in the range (0~23)
+     * @return The current hour in 24 hour mode
      */
     public int getCurrentHourOfDay() {
         return mDate.get(Calendar.HOUR_OF_DAY);
     }
 
-
-    /**
-     * 获取当前显示用的小时值，根据是否为 24 小时视图返回不同的格式。
-     *
-     * @return 返回适合显示的小时值（24小时制直接返回，12小时制则转换为 1 ~ 12）
-     */
     private int getCurrentHour() {
-        if (mIs24HourView) {
-            // 如果是 24 小时视图，直接返回 0~23 的小时值
+        if (mIs24HourView){
             return getCurrentHourOfDay();
         } else {
             int hour = getCurrentHourOfDay();
             if (hour > HOURS_IN_HALF_DAY) {
-                // 下午：将 13~23 转换为 1~11
                 return hour - HOURS_IN_HALF_DAY;
             } else {
-                // 上午：0 转换为 12，其他保持原样（1~11）
                 return hour == 0 ? HOURS_IN_HALF_DAY : hour;
             }
         }
     }
 
-
     /**
-     * 设置当前小时（24小时制），并根据视图模式更新 UI 显示。
+     * Set current hour in 24 hour mode, in the range (0~23)
      *
-     * @param hourOfDay 要设置的小时值（0 ~ 23）
+     * @param hourOfDay
      */
     public void setCurrentHour(int hourOfDay) {
-        // 如果不是初始化阶段，且新值与当前小时相同，则无需处理
         if (!mInitialising && hourOfDay == getCurrentHourOfDay()) {
             return;
         }
-
-        // 更新 Calendar 对象中的小时（24小时制）
         mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
-
-        // 如果是 12 小时制视图，需要处理 AM/PM 和显示值
         if (!mIs24HourView) {
             if (hourOfDay >= HOURS_IN_HALF_DAY) {
-                // 下午：12~23
                 mIsAm = false;
                 if (hourOfDay > HOURS_IN_HALF_DAY) {
-                    // 13~23 转换为 1~11
                     hourOfDay -= HOURS_IN_HALF_DAY;
                 }
-                // else: hourOfDay == 12 → 不变
             } else {
-                // 上午：0~11
                 mIsAm = true;
                 if (hourOfDay == 0) {
-                    // 0 点显示为 12 AM
-                    hourOfDay = HOURS_IN_HALF_DAY; // 12
+                    hourOfDay = HOURS_IN_HALF_DAY;
                 }
-                // else: 1~11 → 不变
             }
-
-            // 更新 AM/PM 控件显示状态
             updateAmPmControl();
         }
-
-        // 设置小时选择器的显示值（NumberPicker）
         mHourSpinner.setValue(hourOfDay);
-
-        // 触发日期时间变化回调
         onDateTimeChanged();
     }
 
     /**
-     * 获取当前选择的分钟值。
+     * Get currentMinute
      *
-     * @return 返回 Calendar 对象中的分钟值（0 ~ 59）
+     * @return The Current Minute
      */
     public int getCurrentMinute() {
         return mDate.get(Calendar.MINUTE);
     }
 
-
     /**
-     * 设置当前选择的分钟值，并更新内部时间模型和监听器。
-     *
-     * @param minute 要设置的分钟值（0 ~ 59）
+     * Set current minute
      */
     public void setCurrentMinute(int minute) {
-        // 如果不是初始化阶段，且新值与当前分钟相同，则无需处理
         if (!mInitialising && minute == getCurrentMinute()) {
             return;
         }
-
-        // 更新分钟选择器 NumberPicker 的显示值
         mMinuteSpinner.setValue(minute);
-
-        // 更新 Calendar 对象中的分钟值
         mDate.set(Calendar.MINUTE, minute);
-
-        // 触发日期时间变化的回调事件
         onDateTimeChanged();
     }
 
-
     /**
-     * 判断当前是否为 24 小时制视图。
-     *
-     * @return 如果是 24 小时制返回 true，否则返回 false
+     * @return true if this is in 24 hour view else false.
      */
     public boolean is24HourView () {
         return mIs24HourView;
     }
 
     /**
-     * 设置是否使用 24 小时制显示时间。
+     * Set whether in 24 hour or AM/PM mode.
      *
-     * @param is24HourView true 表示使用 24 小时制，false 表示使用 AM/PM 模式
+     * @param is24HourView True for 24 hour mode. False for AM/PM mode.
      */
     public void set24HourView(boolean is24HourView) {
         if (mIs24HourView == is24HourView) {
-            return; // 如果状态未变，无需处理
+            return;
         }
-
         mIs24HourView = is24HourView;
-
-        // 根据模式切换 AM/PM 控件的可见性
         mAmPmSpinner.setVisibility(is24HourView ? View.GONE : View.VISIBLE);
-
-        int hour = getCurrentHourOfDay(); // 获取当前小时
-
-        updateHourControl(); // 更新小时选择器范围（12/24）
-        setCurrentHour(hour); // 重新设置小时以适配新视图
-        updateAmPmControl(); // 更新 AM/PM 显示状态
+        int hour = getCurrentHourOfDay();
+        updateHourControl();
+        setCurrentHour(hour);
+        updateAmPmControl();
     }
 
-
-    /**
-     * 更新日期选择器的显示内容，显示一周内的日期（格式：MM.dd EEEE）。
-     */
     private void updateDateControl() {
         Calendar cal = Calendar.getInstance();
         cal.setTimeInMillis(mDate.getTimeInMillis());
-        cal.add(Calendar.DAY_OF_YEAR, -DAYS_IN_ALL_WEEK / 2 - 1); // 回退几天，构建一周范围
-
-        mDateSpinner.setDisplayedValues(null); // 清空旧数据
-
+        cal.add(Calendar.DAY_OF_YEAR, -DAYS_IN_ALL_WEEK / 2 - 1);
+        mDateSpinner.setDisplayedValues(null);
         for (int i = 0; i < DAYS_IN_ALL_WEEK; ++i) {
             cal.add(Calendar.DAY_OF_YEAR, 1);
             mDateDisplayValues[i] = (String) DateFormat.format("MM.dd EEEE", cal);
         }
-
-        mDateSpinner.setDisplayedValues(mDateDisplayValues); // 设置新数据显示
-        mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2); // 默认选中中间日期
-        mDateSpinner.invalidate(); // 刷新控件
+        mDateSpinner.setDisplayedValues(mDateDisplayValues);
+        mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2);
+        mDateSpinner.invalidate();
     }
 
-
-    /**
-     * 更新 AM/PM 选择器的状态和显示。
-     */
     private void updateAmPmControl() {
         if (mIs24HourView) {
-            mAmPmSpinner.setVisibility(View.GONE); // 24小时制隐藏 AM/PM
+            mAmPmSpinner.setVisibility(View.GONE);
         } else {
             int index = mIsAm ? Calendar.AM : Calendar.PM;
-            mAmPmSpinner.setValue(index); // 设置当前 AM/PM 状态
-            mAmPmSpinner.setVisibility(View.VISIBLE); // 显示 AM/PM 控件
+            mAmPmSpinner.setValue(index);
+            mAmPmSpinner.setVisibility(View.VISIBLE);
         }
     }
 
-
-    /**
-     * 根据当前时间格式（12/24小时制）设置小时选择器的取值范围。
-     */
     private void updateHourControl() {
         if (mIs24HourView) {
-            mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW); // 0
-            mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW); // 23
+            mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW);
+            mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW);
         } else {
-            mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW); // 1
-            mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW); // 12
+            mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW);
+            mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW);
         }
     }
 
-
     /**
-     * 设置日期时间变化监听器。
-     *
-     * @param callback 监听器对象，如果为 null 则不触发回调
+     * Set the callback that indicates the 'Set' button has been pressed.
+     * @param callback the callback, if null will do nothing
      */
     public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) {
         mOnDateTimeChangedListener = callback;
     }
 
-    /**
-     * 触发日期时间变化回调。
-     */
     private void onDateTimeChanged() {
         if (mOnDateTimeChangedListener != null) {
             mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(),
                     getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute());
         }
     }
-
 }

java/net/micode/notes/ui/DateTimePickerDialog.java

@@ -29,134 +29,62 @@ import android.content.DialogInterface.OnClickListener;
 import android.text.format.DateFormat;
 import android.text.format.DateUtils;
 
-/**
- * 一个封装了 DateTimePicker 的对话框类，用于选择日期和时间。
- *
- * 提供了一个弹出式对话框界面，用户可以在其中选择具体的日期和时间，
- * 并通过回调将结果返回给调用者。
- */
 public class DateTimePickerDialog extends AlertDialog implements OnClickListener {
 
-    // 当前选中的日期时间
     private Calendar mDate = Calendar.getInstance();
-
-    // 是否使用 24 小时制显示时间
     private boolean mIs24HourView;
-
-    // 时间设置完成后的回调接口
     private OnDateTimeSetListener mOnDateTimeSetListener;
-
-    // 自定义的时间选择控件
     private DateTimePicker mDateTimePicker;
 
-
-    /**
-     * 用户点击“确定”按钮后触发的监听器接口。
-     */
     public interface OnDateTimeSetListener {
         void OnDateTimeSet(AlertDialog dialog, long date);
     }
 
-    /**
-     * 构造函数：创建一个带有初始时间的日期时间选择对话框。
-     *
-     * @param context 上下文环境
-     * @param date 初始时间（毫秒）
-     */
     public DateTimePickerDialog(Context context, long date) {
         super(context);
-
-        // 创建一个 DateTimePicker 实例作为核心选择控件
         mDateTimePicker = new DateTimePicker(context);
-
-        // 设置该控件为对话框的内容视图
         setView(mDateTimePicker);
-
-        // 设置日期时间变化监听器，用于更新内部时间和标题
         mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() {
             public void onDateTimeChanged(DateTimePicker view, int year, int month,
                     int dayOfMonth, int hourOfDay, int minute) {
-                // 更新 Calendar 对象中的各个时间字段
                 mDate.set(Calendar.YEAR, year);
                 mDate.set(Calendar.MONTH, month);
                 mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
                 mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
                 mDate.set(Calendar.MINUTE, minute);
-
-                // 更新对话框标题以反映最新时间
                 updateTitle(mDate.getTimeInMillis());
             }
         });
-
-        // 设置初始时间
         mDate.setTimeInMillis(date);
-
-        // 秒数设为 0，避免出现不必要的误差
         mDate.set(Calendar.SECOND, 0);
-
-        // 将当前时间同步到 DateTimePicker 控件中
         mDateTimePicker.setCurrentDate(mDate.getTimeInMillis());
-
-        // 设置“确定”按钮并绑定点击事件
         setButton(context.getString(R.string.datetime_dialog_ok), this);
-
-        // 设置“取消”按钮，不绑定点击事件
         setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
-
-        // 根据系统设置决定是否启用 24 小时制
         set24HourView(DateFormat.is24HourFormat(this.getContext()));
-
-        // 初始化对话框标题
         updateTitle(mDate.getTimeInMillis());
     }
 
-    /**
-     * 设置是否使用 24 小时制显示时间。
-     *
-     * @param is24HourView true 表示使用 24 小时制
-     */
     public void set24HourView(boolean is24HourView) {
         mIs24HourView = is24HourView;
     }
 
-    /**
-     * 设置时间设置完成后的回调监听器。
-     *
-     * @param callBack 监听器对象
-     */
     public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) {
         mOnDateTimeSetListener = callBack;
     }
 
-    /**
-     * 更新对话框标题，显示当前选择的时间。
-     *
-     * @param date 要显示的时间（毫秒）
-     */
     private void updateTitle(long date) {
         int flag =
             DateUtils.FORMAT_SHOW_YEAR |
             DateUtils.FORMAT_SHOW_DATE |
             DateUtils.FORMAT_SHOW_TIME;
-
-        // 根据是否为 24 小时制设置格式标志
         flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_24HOUR;
-
-        // 设置对话框标题为格式化后的时间字符串
         setTitle(DateUtils.formatDateTime(this.getContext(), date, flag));
     }
 
-    /**
-     * 对话框按钮点击事件处理。
-     *
-     * @param arg0 点击的对话框
-     * @param arg1 被点击的按钮标识符
-     */
     public void onClick(DialogInterface arg0, int arg1) {
-        // 如果设置了监听器，则调用回调方法传递最终时间
         if (mOnDateTimeSetListener != null) {
             mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());
         }
     }
 
-}
+}

java/net/micode/notes/ui/DropdownMenu.java

@@ -27,46 +27,17 @@ import android.widget.PopupMenu.OnMenuItemClickListener;
 
 import net.micode.notes.R;
 
-/**
- * 封装 PopupMenu 的下拉菜单控件。
- *
- * 提供一个按钮触发的下拉菜单功能，用于简化菜单操作流程。
- */
 public class DropdownMenu {
-
-    // 下拉菜单绑定的按钮控件
     private Button mButton;
-
-    // Android 原生 PopupMenu 实例
     private PopupMenu mPopupMenu;
-
-    // 菜单对象，用于操作菜单项
     private Menu mMenu;
 
-
-    /**
-     * 构造函数：初始化下拉菜单。
-     *
-     * @param context 上下文环境
-     * @param button  绑定的按钮控件，点击该按钮弹出菜单
-     * @param menuId  菜单资源ID（如 R.menu.xxx）
-     */
     public DropdownMenu(Context context, Button button, int menuId) {
         mButton = button;
-
-        // 设置按钮背景为下拉图标
         mButton.setBackgroundResource(R.drawable.dropdown_icon);
-
-        // 创建 PopupMenu 实例
         mPopupMenu = new PopupMenu(context, mButton);
-
-        // 获取菜单对象
         mMenu = mPopupMenu.getMenu();
-
-        // 使用菜单资源填充 PopupMenu
         mPopupMenu.getMenuInflater().inflate(menuId, mMenu);
-
-        // 设置按钮点击事件，点击时显示菜单
         mButton.setOnClickListener(new OnClickListener() {
             public void onClick(View v) {
                 mPopupMenu.show();
@@ -74,34 +45,17 @@ public class DropdownMenu {
         });
     }
 
-    /**
-     * 设置菜单项点击监听器。
-     *
-     * @param listener 监听器对象
-     */
     public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) {
         if (mPopupMenu != null) {
             mPopupMenu.setOnMenuItemClickListener(listener);
         }
     }
 
-    /**
-     * 根据菜单项 ID 查找对应的 MenuItem 对象。
-     *
-     * @param id 菜单项资源 ID
-     * @return 返回找到的 MenuItem 对象
-     */
     public MenuItem findItem(int id) {
         return mMenu.findItem(id);
     }
 
-    /**
-     * 设置按钮显示的文本标题。
-     *
-     * @param title 要设置的标题文本
-     */
     public void setTitle(CharSequence title) {
         mButton.setText(title);
     }
-
 }

java/net/micode/notes/ui/FoldersListAdapter.java

@@ -30,13 +30,11 @@ import net.micode.notes.data.Notes.NoteColumns;
 
 
 public class FoldersListAdapter extends CursorAdapter {
-    // 定义查询的列
     public static final String [] PROJECTION = {
-            NoteColumns.ID,
-            NoteColumns.SNIPPET
+        NoteColumns.ID,
+        NoteColumns.SNIPPET
     };
 
-    // 列索引常量
     public static final int ID_COLUMN   = 0;
     public static final int NAME_COLUMN = 1;
 
@@ -47,14 +45,12 @@ public class FoldersListAdapter extends CursorAdapter {
 
     @Override
     public View newView(Context context, Cursor cursor, ViewGroup parent) {
-        // 创建新的视图
         return new FolderListItem(context);
     }
 
     @Override
     public void bindView(View view, Context context, Cursor cursor) {
         if (view instanceof FolderListItem) {
-            // 获取文件夹名称，如果是根文件夹则使用特定字符串
             String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
                     .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
             ((FolderListItem) view).bind(folderName);
@@ -63,7 +59,6 @@ public class FoldersListAdapter extends CursorAdapter {
 
     public String getFolderName(Context context, int position) {
         Cursor cursor = (Cursor) getItem(position);
-        // 获取指定位置的文件夹名称
         return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
                 .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
     }
@@ -73,13 +68,11 @@ public class FoldersListAdapter extends CursorAdapter {
 
         public FolderListItem(Context context) {
             super(context);
-            // 加载布局并初始化控件
             inflate(context, R.layout.folder_list_item, this);
             mName = (TextView) findViewById(R.id.tv_folder_name);
         }
 
         public void bind(String name) {
-            // 设置文件夹名称
             mName.setText(name);
         }
     }

java/net/micode/notes/ui/NoteEditText.java

@@ -1,6 +1,17 @@
 /*
- * 版权声明： MiCode 开源社区 版权所有
- * 本文件遵循 Apache License, Version 2.0 许可协议
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package net.micode.notes.ui;
@@ -26,17 +37,15 @@ import net.micode.notes.R;
 import java.util.HashMap;
 import java.util.Map;
 
-// 定义 NoteEditText 类，继承自 EditText，用于笔记编辑文本框
 public class NoteEditText extends EditText {
-    private static final String TAG = "NoteEditText"; // 日志标签
-    private int mIndex; // 当前编辑文本的索引
-    private int mSelectionStartBeforeDelete; // 删除前的光标起始位置
+    private static final String TAG = "NoteEditText";
+    private int mIndex;
+    private int mSelectionStartBeforeDelete;
 
-    private static final String SCHEME_TEL = "tel:"; // 电话 URI scheme
-    private static final String SCHEME_HTTP = "http:"; // HTTP URI scheme
-    private static final String SCHEME_EMAIL = "mailto:"; // 邮件 URI scheme
+    private static final String SCHEME_TEL = "tel:" ;
+    private static final String SCHEME_HTTP = "http:" ;
+    private static final String SCHEME_EMAIL = "mailto:" ;
 
-    // 定义 URI scheme 和对应操作资源 ID 的映射关系
     private static final Map<String, Integer> sSchemaActionResMap = new HashMap<String, Integer>();
     static {
         sSchemaActionResMap.put(SCHEME_TEL, R.string.note_link_tel);
@@ -45,59 +54,56 @@ public class NoteEditText extends EditText {
     }
 
     /**
-     * 由 NoteEditActivity 调用，用于删除或添加编辑文本
+     * Call by the {@link NoteEditActivity} to delete or add edit text
      */
     public interface OnTextViewChangeListener {
         /**
-         * 当按下删除键且文本为空时，删除当前编辑文本
+         * Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens
+         * and the text is null
          */
         void onEditTextDelete(int index, String text);
 
         /**
-         * 当按下回车键时，添加新的编辑文本
+         * Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER}
+         * happen
          */
         void onEditTextEnter(int index, String text);
 
         /**
-         * 当文本变化时，隐藏或显示选项菜单项
+         * Hide or show item option when text change
          */
         void onTextChange(int index, boolean hasText);
     }
 
-    private OnTextViewChangeListener mOnTextViewChangeListener; // 编辑文本变化监听器
+    private OnTextViewChangeListener mOnTextViewChangeListener;
 
-    // 构造函数
     public NoteEditText(Context context) {
         super(context, null);
-        mIndex = 0; // 默认索引为 0
+        mIndex = 0;
     }
 
-    // 设置编辑文本的索引
     public void setIndex(int index) {
         mIndex = index;
     }
 
-    // 设置编辑文本变化监听器
     public void setOnTextViewChangeListener(OnTextViewChangeListener listener) {
         mOnTextViewChangeListener = listener;
     }
 
-    // 构造函数
     public NoteEditText(Context context, AttributeSet attrs) {
         super(context, attrs, android.R.attr.editTextStyle);
     }
 
-    // 构造函数
     public NoteEditText(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs, defStyle);
+        // TODO Auto-generated constructor stub
     }
 
-    // 处理触摸事件，用于设置文本选择
     @Override
     public boolean onTouchEvent(MotionEvent event) {
         switch (event.getAction()) {
             case MotionEvent.ACTION_DOWN:
-                // 计算触摸位置相对于文本的偏移量
+
                 int x = (int) event.getX();
                 int y = (int) event.getY();
                 x -= getTotalPaddingLeft();
@@ -106,84 +112,75 @@ public class NoteEditText extends EditText {
                 y += getScrollY();
 
                 Layout layout = getLayout();
-                int line = layout.getLineForVertical(y); // 获取垂直位置对应的行号
-                int off = layout.getOffsetForHorizontal(line, x); // 获取水平位置对应的偏移量
-                Selection.setSelection(getText(), off); // 设置文本选择
+                int line = layout.getLineForVertical(y);
+                int off = layout.getOffsetForHorizontal(line, x);
+                Selection.setSelection(getText(), off);
                 break;
         }
 
-        return super.onTouchEvent(event); // 调用父类的触摸事件处理方法
+        return super.onTouchEvent(event);
     }
 
-    // 处理键盘按下事件
     @Override
     public boolean onKeyDown(int keyCode, KeyEvent event) {
         switch (keyCode) {
             case KeyEvent.KEYCODE_ENTER:
-                // 如果设置了编辑文本变化监听器，则不允许处理回车键事件
                 if (mOnTextViewChangeListener != null) {
                     return false;
                 }
                 break;
             case KeyEvent.KEYCODE_DEL:
-                mSelectionStartBeforeDelete = getSelectionStart(); // 保存删除前的光标起始位置
+                mSelectionStartBeforeDelete = getSelectionStart();
                 break;
             default:
                 break;
         }
-        return super.onKeyDown(keyCode, event); // 调用父类的键盘按下事件处理方法
+        return super.onKeyDown(keyCode, event);
     }
 
-    // 处理键盘弹起事件
     @Override
     public boolean onKeyUp(int keyCode, KeyEvent event) {
-        switch (keyCode) {
+        switch(keyCode) {
             case KeyEvent.KEYCODE_DEL:
-                // 如果设置了编辑文本变化监听器，则处理删除事件
                 if (mOnTextViewChangeListener != null) {
-                    if (0 == mSelectionStartBeforeDelete && mIndex != 0) { // 如果光标在起始位置且不是第一个编辑文本
-                        mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString()); // 删除当前编辑文本
+                    if (0 == mSelectionStartBeforeDelete && mIndex != 0) {
+                        mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString());
                         return true;
                     }
                 } else {
-                    Log.d(TAG, "未设置编辑文本变化监听器");
+                    Log.d(TAG, "OnTextViewChangeListener was not seted");
                 }
                 break;
             case KeyEvent.KEYCODE_ENTER:
-                // 如果设置了编辑文本变化监听器，则处理回车键事件
                 if (mOnTextViewChangeListener != null) {
-                    int selectionStart = getSelectionStart(); // 获取光标起始位置
-                    String text = getText().subSequence(selectionStart, length()).toString(); // 获取当前选择的文本
-                    setText(getText().subSequence(0, selectionStart)); // 设置文本为选择位置之前的内容
-                    mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text); // 添加新的编辑文本
+                    int selectionStart = getSelectionStart();
+                    String text = getText().subSequence(selectionStart, length()).toString();
+                    setText(getText().subSequence(0, selectionStart));
+                    mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text);
                 } else {
-                    Log.d(TAG, "未设置编辑文本变化监听器");
+                    Log.d(TAG, "OnTextViewChangeListener was not seted");
                 }
                 break;
             default:
                 break;
         }
-        return super.onKeyUp(keyCode, event); // 调用父类的键盘弹起事件处理方法
+        return super.onKeyUp(keyCode, event);
     }
 
-    // 处理焦点变化事件
     @Override
     protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
-        // 如果设置了编辑文本变化监听器，则通知文本变化
         if (mOnTextViewChangeListener != null) {
-            if (!focused && TextUtils.isEmpty(getText())) { // 如果失去焦点且文本为空
-                mOnTextViewChangeListener.onTextChange(mIndex, false); // 通知文本为空
+            if (!focused && TextUtils.isEmpty(getText())) {
+                mOnTextViewChangeListener.onTextChange(mIndex, false);
             } else {
-                mOnTextViewChangeListener.onTextChange(mIndex, true); // 通知文本不为空
+                mOnTextViewChangeListener.onTextChange(mIndex, true);
             }
         }
-        super.onFocusChanged(focused, direction, previouslyFocusedRect); // 调用父类的焦点变化事件处理方法
+        super.onFocusChanged(focused, direction, previouslyFocusedRect);
     }
 
-    // 创建上下文菜单
     @Override
     protected void onCreateContextMenu(ContextMenu menu) {
-        // 如果文本是 Spanned 类型，则处理 URLSpan
         if (getText() instanceof Spanned) {
             int selStart = getSelectionStart();
             int selEnd = getSelectionEnd();
@@ -191,31 +188,30 @@ public class NoteEditText extends EditText {
             int min = Math.min(selStart, selEnd);
             int max = Math.max(selStart, selEnd);
 
-            final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class); // 获取选中文本中的 URLSpan
-            if (urls.length == 1) { // 如果只有一个 URLSpan
+            final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class);
+            if (urls.length == 1) {
                 int defaultResId = 0;
-                // 遍历 URI scheme 和操作资源 ID 的映射关系，找到对应的资源 ID
-                for (String schema : sSchemaActionResMap.keySet()) {
-                    if (urls[0].getURL().indexOf(schema) >= 0) {
+                for(String schema: sSchemaActionResMap.keySet()) {
+                    if(urls[0].getURL().indexOf(schema) >= 0) {
                         defaultResId = sSchemaActionResMap.get(schema);
                         break;
                     }
                 }
 
-                if (defaultResId == 0) { // 如果未找到对应的资源 ID，则使用默认资源 ID
+                if (defaultResId == 0) {
                     defaultResId = R.string.note_link_other;
                 }
 
-                // 添加菜单项并设置点击监听器
                 menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener(
                         new OnMenuItemClickListener() {
                             public boolean onMenuItemClick(MenuItem item) {
-                                urls[0].onClick(NoteEditText.this); // 跳转到对应链接
+                                // goto a new intent
+                                urls[0].onClick(NoteEditText.this);
                                 return true;
                             }
                         });
             }
         }
-        super.onCreateContextMenu(menu); // 调用父类的上下文菜单创建方法
+        super.onCreateContextMenu(menu);
     }
-}
+}

java/net/micode/notes/ui/NoteItemData.java

@@ -1,6 +1,17 @@
 /*
- * 版权声明： MiCode 开源社区 版权所有
- * 本文件遵循 Apache License, Version 2.0 许可协议
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package net.micode.notes.ui;
@@ -16,78 +27,72 @@ import net.micode.notes.tool.DataUtils;
 
 
 public class NoteItemData {
-    // 定义查询投影，指定要查询的列
-    static final String[] PROJECTION = new String[]{
-        NoteColumns.ID, // 笔记 ID
-        NoteColumns.ALERTED_DATE, // 提醒日期
-        NoteColumns.BG_COLOR_ID, // 背景颜色 ID
-        NoteColumns.CREATED_DATE, // 创建日期
-        NoteColumns.HAS_ATTACHMENT, // 是否有附件
-        NoteColumns.MODIFIED_DATE, // 修改日期
-        NoteColumns.NOTES_COUNT, // 笔记数量
-        NoteColumns.PARENT_ID, // 父级 ID
-        NoteColumns.SNIPPET, // 摘要
-        NoteColumns.TYPE, // 类型
-        NoteColumns.WIDGET_ID, // 小部件 ID
-        NoteColumns.WIDGET_TYPE // 小部件类型
+    static final String [] PROJECTION = new String [] {
+        NoteColumns.ID,
+        NoteColumns.ALERTED_DATE,
+        NoteColumns.BG_COLOR_ID,
+        NoteColumns.CREATED_DATE,
+        NoteColumns.HAS_ATTACHMENT,
+        NoteColumns.MODIFIED_DATE,
+        NoteColumns.NOTES_COUNT,
+        NoteColumns.PARENT_ID,
+        NoteColumns.SNIPPET,
+        NoteColumns.TYPE,
+        NoteColumns.WIDGET_ID,
+        NoteColumns.WIDGET_TYPE,
     };
 
-    // 定义各列在查询结果中的索引
-    private static final int ID_COLUMN = 0;
-    private static final int ALERTED_DATE_COLUMN = 1;
-    private static final int BG_COLOR_ID_COLUMN = 2;
-    private static final int CREATED_DATE_COLUMN = 3;
-    private static final int HAS_ATTACHMENT_COLUMN = 4;
-    private static final int MODIFIED_DATE_COLUMN = 5;
-    private static final int NOTES_COUNT_COLUMN = 6;
-    private static final int PARENT_ID_COLUMN = 7;
-    private static final int SNIPPET_COLUMN = 8;
-    private static final int TYPE_COLUMN = 9;
-    private static final int WIDGET_ID_COLUMN = 10;
-    private static final int WIDGET_TYPE_COLUMN = 11;
-
-    // 定义笔记数据的成员变量
-    private long mId; // 笔记 ID
-    private long mAlertDate; // 提醒日期
-    private int mBgColorId; // 背景颜色 ID
-    private long mCreatedDate; // 创建日期
-    private boolean mHasAttachment; // 是否有附件
-    private long mModifiedDate; // 修改日期
-    private int mNotesCount; // 笔记数量
-    private long mParentId; // 父级 ID
-    private String mSnippet; // 摘要
-    private int mType; // 类型
-    private int mWidgetId; // 小部件 ID
-    private int mWidgetType; // 小部件类型
-    private String mName; // 名称
-    private String mPhoneNumber; // 电话号码
-
-    // 定义位置相关的成员变量
-    private boolean mIsLastItem; // 是否是最后一个项目
-    private boolean mIsFirstItem; // 是否是第一个项目
-    private boolean mIsOnlyOneItem; // 是否只有一个项目
-    private boolean mIsOneNoteFollowingFolder; // 是否有一个笔记跟随文件夹
-    private boolean mIsMultiNotesFollowingFolder; // 是否有多个笔记跟随文件夹
-
-    // 构造函数，用于从游标中初始化笔记数据
+    private static final int ID_COLUMN                    = 0;
+    private static final int ALERTED_DATE_COLUMN          = 1;
+    private static final int BG_COLOR_ID_COLUMN           = 2;
+    private static final int CREATED_DATE_COLUMN          = 3;
+    private static final int HAS_ATTACHMENT_COLUMN        = 4;
+    private static final int MODIFIED_DATE_COLUMN         = 5;
+    private static final int NOTES_COUNT_COLUMN           = 6;
+    private static final int PARENT_ID_COLUMN             = 7;
+    private static final int SNIPPET_COLUMN               = 8;
+    private static final int TYPE_COLUMN                  = 9;
+    private static final int WIDGET_ID_COLUMN             = 10;
+    private static final int WIDGET_TYPE_COLUMN           = 11;
+
+    private long mId;
+    private long mAlertDate;
+    private int mBgColorId;
+    private long mCreatedDate;
+    private boolean mHasAttachment;
+    private long mModifiedDate;
+    private int mNotesCount;
+    private long mParentId;
+    private String mSnippet;
+    private int mType;
+    private int mWidgetId;
+    private int mWidgetType;
+    private String mName;
+    private String mPhoneNumber;
+
+    private boolean mIsLastItem;
+    private boolean mIsFirstItem;
+    private boolean mIsOnlyOneItem;
+    private boolean mIsOneNoteFollowingFolder;
+    private boolean mIsMultiNotesFollowingFolder;
+
     public NoteItemData(Context context, Cursor cursor) {
-        mId = cursor.getLong(ID_COLUMN); // 获取笔记 ID
-        mAlertDate = cursor.getLong(ALERTED_DATE_COLUMN); // 获取提醒日期
-        mBgColorId = cursor.getInt(BG_COLOR_ID_COLUMN); // 获取背景颜色 ID
-        mCreatedDate = cursor.getLong(CREATED_DATE_COLUMN); // 获取创建日期
-        mHasAttachment = (cursor.getInt(HAS_ATTACHMENT_COLUMN) > 0) ? true : false; // 获取是否有附件
-        mModifiedDate = cursor.getLong(MODIFIED_DATE_COLUMN); // 获取修改日期
-        mNotesCount = cursor.getInt(NOTES_COUNT_COLUMN); // 获取笔记数量
-        mParentId = cursor.getLong(PARENT_ID_COLUMN); // 获取父级 ID
-        mSnippet = cursor.getString(SNIPPET_COLUMN); // 获取摘要
-        mSnippet = mSnippet.replace(NoteEditActivity.TAG_CHECKED, "").replace( // 移除摘要中的标记标签
+        mId = cursor.getLong(ID_COLUMN);
+        mAlertDate = cursor.getLong(ALERTED_DATE_COLUMN);
+        mBgColorId = cursor.getInt(BG_COLOR_ID_COLUMN);
+        mCreatedDate = cursor.getLong(CREATED_DATE_COLUMN);
+        mHasAttachment = (cursor.getInt(HAS_ATTACHMENT_COLUMN) > 0) ? true : false;
+        mModifiedDate = cursor.getLong(MODIFIED_DATE_COLUMN);
+        mNotesCount = cursor.getInt(NOTES_COUNT_COLUMN);
+        mParentId = cursor.getLong(PARENT_ID_COLUMN);
+        mSnippet = cursor.getString(SNIPPET_COLUMN);
+        mSnippet = mSnippet.replace(NoteEditActivity.TAG_CHECKED, "").replace(
                 NoteEditActivity.TAG_UNCHECKED, "");
-        mType = cursor.getInt(TYPE_COLUMN); // 获取类型
-        mWidgetId = cursor.getInt(WIDGET_ID_COLUMN); // 获取小部件 ID
-        mWidgetType = cursor.getInt(WIDGET_TYPE_COLUMN); // 获取小部件类型
+        mType = cursor.getInt(TYPE_COLUMN);
+        mWidgetId = cursor.getInt(WIDGET_ID_COLUMN);
+        mWidgetType = cursor.getInt(WIDGET_TYPE_COLUMN);
 
         mPhoneNumber = "";
-        // 如果是通话记录文件夹，则获取电话号码和联系人名称
         if (mParentId == Notes.ID_CALL_RECORD_FOLDER) {
             mPhoneNumber = DataUtils.getCallNumberByNoteId(context.getContentResolver(), mId);
             if (!TextUtils.isEmpty(mPhoneNumber)) {
@@ -101,143 +106,119 @@ public class NoteItemData {
         if (mName == null) {
             mName = "";
         }
-        checkPostion(cursor); // 检查位置信息
+        checkPostion(cursor);
     }
 
-    // 检查位置信息，确定项目在游标中的位置关系
     private void checkPostion(Cursor cursor) {
-        mIsLastItem = cursor.isLast() ? true : false; // 是否是最后一个项目
-        mIsFirstItem = cursor.isFirst() ? true : false; // 是否是第一个项目
-        mIsOnlyOneItem = (cursor.getCount() == 1); // 是否只有一个项目
-        mIsMultiNotesFollowingFolder = false; // 默认没有多个笔记跟随文件夹
-        mIsOneNoteFollowingFolder = false; // 默认没有一个笔记跟随文件夹
+        mIsLastItem = cursor.isLast() ? true : false;
+        mIsFirstItem = cursor.isFirst() ? true : false;
+        mIsOnlyOneItem = (cursor.getCount() == 1);
+        mIsMultiNotesFollowingFolder = false;
+        mIsOneNoteFollowingFolder = false;
 
-        // 如果是笔记且不是第一个项目，则检查前面的项目类型
         if (mType == Notes.TYPE_NOTE && !mIsFirstItem) {
             int position = cursor.getPosition();
-            if (cursor.moveToPrevious()) { // 移动到前一个项目
-                // 如果前一个项目是文件夹或系统类型，则判断是否有一个或多个笔记跟随文件夹
-                if (cursor.getInt(TYPE_COLUMN) == Notes.TYPE_FOLDER || cursor.getInt(TYPE_COLUMN) == Notes.TYPE_SYSTEM) {
+            if (cursor.moveToPrevious()) {
+                if (cursor.getInt(TYPE_COLUMN) == Notes.TYPE_FOLDER
+                        || cursor.getInt(TYPE_COLUMN) == Notes.TYPE_SYSTEM) {
                     if (cursor.getCount() > (position + 1)) {
-                        mIsMultiNotesFollowingFolder = true; // 有多个笔记跟随文件夹
+                        mIsMultiNotesFollowingFolder = true;
                     } else {
-                        mIsOneNoteFollowingFolder = true; // 有一个笔记跟随文件夹
+                        mIsOneNoteFollowingFolder = true;
                     }
                 }
-                if (!cursor.moveToNext()) { // 尝试移回原位置
+                if (!cursor.moveToNext()) {
                     throw new IllegalStateException("cursor move to previous but can't move back");
                 }
             }
         }
     }
 
-    // 返回是否有多个笔记跟随文件夹
-    public boolean isMultiFollowingFolder() {
-        return mIsMultiNotesFollowingFolder;
-    }
-
-    // 返回是否有提醒
-    public boolean hasAlert() {
-        return (mAlertDate > 0);
+    public boolean isOneFollowingFolder() {
+        return mIsOneNoteFollowingFolder;
     }
 
-    // 返回是否是通话记录
-    public boolean isCallRecord() {
-        return (mParentId == Notes.ID_CALL_RECORD_FOLDER && !TextUtils.isEmpty(mPhoneNumber));
+    public boolean isMultiFollowingFolder() {
+        return mIsMultiNotesFollowingFolder;
     }
 
-    // 返回是否是最后一个项目
     public boolean isLast() {
         return mIsLastItem;
     }
 
-    // 返回联系人名称
     public String getCallName() {
         return mName;
     }
 
-    // 返回是否是第一个项目
     public boolean isFirst() {
         return mIsFirstItem;
     }
 
-    // 返回是否只有一个项目
     public boolean isSingle() {
         return mIsOnlyOneItem;
     }
 
-    // 返回是否有一个笔记跟随文件夹
-    public boolean isOneFollowingFolder() {
-        return mIsOneNoteFollowingFolder;
-    }
-
-    // 返回笔记 ID
     public long getId() {
         return mId;
     }
 
-    // 返回提醒日期
     public long getAlertDate() {
         return mAlertDate;
     }
 
-    // 返回创建日期
     public long getCreatedDate() {
         return mCreatedDate;
     }
 
-    // 返回是否有附件
     public boolean hasAttachment() {
         return mHasAttachment;
     }
 
-    // 返回修改日期
     public long getModifiedDate() {
         return mModifiedDate;
     }
 
-    // 返回背景颜色 ID
     public int getBgColorId() {
         return mBgColorId;
     }
 
-    // 返回父级 ID
     public long getParentId() {
         return mParentId;
     }
 
-    // 返回笔记数量
     public int getNotesCount() {
         return mNotesCount;
     }
 
-    // 返回文件夹 ID
-    public long getFolderId() {
+    public long getFolderId () {
         return mParentId;
     }
 
-    // 返回类型
     public int getType() {
         return mType;
     }
 
-    // 返回小部件类型
     public int getWidgetType() {
         return mWidgetType;
     }
 
-    // 返回小部件 ID
     public int getWidgetId() {
         return mWidgetId;
     }
 
-    // 返回摘要
     public String getSnippet() {
         return mSnippet;
     }
 
-    // 从游标中获取笔记类型
+    public boolean hasAlert() {
+        return (mAlertDate > 0);
+    }
+
+    public boolean isCallRecord() {
+        return (mParentId == Notes.ID_CALL_RECORD_FOLDER && !TextUtils.isEmpty(mPhoneNumber));
+    }
+
     public static int getNoteType(Cursor cursor) {
         return cursor.getInt(TYPE_COLUMN);
     }
-}
+}

java/net/micode/notes/ui/NotesListActivity.java

@@ -5,7 +5,7 @@
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- *        <url id="d0s4geb67ti966oe1310" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url>
+ *        http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -79,114 +79,125 @@ import java.io.InputStreamReader;
 import java.util.HashSet;
 
 public class NotesListActivity extends Activity implements OnClickListener, OnItemLongClickListener {
-    // 定义查询标记
     private static final int FOLDER_NOTE_LIST_QUERY_TOKEN = 0;
+
     private static final int FOLDER_LIST_QUERY_TOKEN      = 1;
-    // 定义菜单项 ID
+
     private static final int MENU_FOLDER_DELETE = 0;
+
     private static final int MENU_FOLDER_VIEW = 1;
+
     private static final int MENU_FOLDER_CHANGE_NAME = 2;
-    // 定义偏好设置键
+
     private static final String PREFERENCE_ADD_INTRODUCTION = "net.micode.notes.introduction";
-    // 定义列表编辑状态枚举
+
     private enum ListEditState {
         NOTE_LIST, SUB_FOLDER, CALL_RECORD_FOLDER
     };
-    // 定义当前列表编辑状态
+
     private ListEditState mState;
-    // 定义异步查询处理器
+
     private BackgroundQueryHandler mBackgroundQueryHandler;
-    // 定义笔记列表适配器
+
     private NotesListAdapter mNotesListAdapter;
-    // 定义笔记列表视图
+
     private ListView mNotesListView;
-    // 定义新建笔记按钮
+
     private Button mAddNewNote;
-    // 定义是否正在分发触摸事件的标志
+
     private boolean mDispatch;
-    // 定义触摸事件的原始 Y 坐标和分发 Y 坐标
+
     private int mOriginY;
+
     private int mDispatchY;
-    // 定义标题栏视图
+
     private TextView mTitleBar;
-    // 定义当前文件夹 ID
+
     private long mCurrentFolderId;
-    // 定义内容解析器
+
     private ContentResolver mContentResolver;
-    // 定义多选模式回调
+
     private ModeCallback mModeCallBack;
-    // 定义日志标签
+
     private static final String TAG = "NotesListActivity";
-    // 定义列表视图滚动速率
+
     public static final int NOTES_LISTVIEW_SCROLL_RATE = 30;
-    // 定义焦点笔记数据项
+
     private NoteItemData mFocusNoteDataItem;
-    // 定义查询选择条件
+
     private static final String NORMAL_SELECTION = NoteColumns.PARENT_ID + "=?";
-    private static final String ROOT_FOLDER_SELECTION = "(" + NoteColumns.TYPE + "<>" + Notes.TYPE_SYSTEM + " AND " + NoteColumns.PARENT_ID + "=?)" + " OR (" + NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER + " AND " + NoteColumns.NOTES_COUNT + ">0)";
-    // 定义请求码
+
+    private static final String ROOT_FOLDER_SELECTION = "(" + NoteColumns.TYPE + "<>"
+            + Notes.TYPE_SYSTEM + " AND " + NoteColumns.PARENT_ID + "=?)" + " OR ("
+            + NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER + " AND "
+            + NoteColumns.NOTES_COUNT + ">0)";
+
     private final static int REQUEST_CODE_OPEN_NODE = 102;
     private final static int REQUEST_CODE_NEW_NODE  = 103;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.note_list); // 设置布局文件为 note_list
-        initResources(); // 初始化资源
+        setContentView(R.layout.note_list);
+        initResources();
 
         /**
-         * 当用户首次使用此应用时插入介绍
+         * Insert an introduction when user firstly use this application
          */
-        setAppInfoFromRawRes(); // 从原始资源文件中读取介绍信息并创建笔记
+        setAppInfoFromRawRes();
     }
 
     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
-        if (resultCode == RESULT_OK && (requestCode == REQUEST_CODE_OPEN_NODE || requestCode == REQUEST_CODE_NEW_NODE)) {
-            mNotesListAdapter.changeCursor(null); // 更改游标以刷新列表
+        if (resultCode == RESULT_OK
+                && (requestCode == REQUEST_CODE_OPEN_NODE || requestCode == REQUEST_CODE_NEW_NODE)) {
+            mNotesListAdapter.changeCursor(null);
         } else {
-            super.onActivityResult(requestCode, resultCode, data); // 调用父类的方法
+            super.onActivityResult(requestCode, resultCode, data);
         }
     }
 
     private void setAppInfoFromRawRes() {
-        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this); // 获取默认偏好设置
-        if (!sp.getBoolean(PREFERENCE_ADD_INTRODUCTION, false)) { // 如果未添加介绍
-            StringBuilder sb = new StringBuilder(); // 创建字符串构建器
+        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
+        if (!sp.getBoolean(PREFERENCE_ADD_INTRODUCTION, false)) {
+            StringBuilder sb = new StringBuilder();
             InputStream in = null;
             try {
-                in = getResources().openRawResource(R.raw.introduction); // 打开原始资源文件
+                 in = getResources().openRawResource(R.raw.introduction);
                 if (in != null) {
                     InputStreamReader isr = new InputStreamReader(in);
                     BufferedReader br = new BufferedReader(isr);
-                    char[] buf = new char[1024];
+                    char [] buf = new char[1024];
                     int len = 0;
                     while ((len = br.read(buf)) > 0) {
-                        sb.append(buf, 0, len); // 将读取的内容追加到字符串构建器
+                        sb.append(buf, 0, len);
                     }
                 } else {
-                    Log.e(TAG, "读取介绍文件错误");
+                    Log.e(TAG, "Read introduction file error");
                     return;
                 }
             } catch (IOException e) {
                 e.printStackTrace();
                 return;
             } finally {
-                if (in != null) {
+                if(in != null) {
                     try {
-                        in.close(); // 关闭输入流
+                        in.close();
                     } catch (IOException e) {
+                        // TODO Auto-generated catch block
                         e.printStackTrace();
                     }
                 }
             }
 
-            WorkingNote note = WorkingNote.createEmptyNote(this, Notes.ID_ROOT_FOLDER, AppWidgetManager.INVALID_APPWIDGET_ID, Notes.TYPE_WIDGET_INVALIDE, ResourceParser.RED); // 创建空笔记
-            note.setWorkingText(sb.toString()); // 设置笔记内容
-            if (note.saveNote()) { // 保存笔记
-                sp.edit().putBoolean(PREFERENCE_ADD_INTRODUCTION, true).commit(); // 更新偏好设置
+            WorkingNote note = WorkingNote.createEmptyNote(this, Notes.ID_ROOT_FOLDER,
+                    AppWidgetManager.INVALID_APPWIDGET_ID, Notes.TYPE_WIDGET_INVALIDE,
+                    ResourceParser.RED);
+            note.setWorkingText(sb.toString());
+            if (note.saveNote()) {
+                sp.edit().putBoolean(PREFERENCE_ADD_INTRODUCTION, true).commit();
             } else {
-                Log.e(TAG, "保存介绍笔记错误");
+                Log.e(TAG, "Save introduction note error");
                 return;
             }
         }
@@ -195,28 +206,29 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     @Override
     protected void onStart() {
         super.onStart();
-        startAsyncNotesListQuery(); // 开始异步查询笔记列表
+        startAsyncNotesListQuery();
     }
 
     private void initResources() {
-        mContentResolver = this.getContentResolver(); // 获取内容解析器
-        mBackgroundQueryHandler = new BackgroundQueryHandler(this.getContentResolver()); // 创建异步查询处理器
-        mCurrentFolderId = Notes.ID_ROOT_FOLDER; // 设置当前文件夹 ID 为根文件夹
-        mNotesListView = (ListView) findViewById(R.id.notes_list); // 获取笔记列表视图
-        mNotesListView.addFooterView(LayoutInflater.from(this).inflate(R.layout.note_list_footer, null), null, false); // 添加页脚视图
-        mNotesListView.setOnItemClickListener(new OnListItemClickListener()); // 设置项点击监听器
-        mNotesListView.setOnItemLongClickListener(this); // 设置项长按监听器
-        mNotesListAdapter = new NotesListAdapter(this); // 创建笔记列表适配器
-        mNotesListView.setAdapter(mNotesListAdapter); // 设置适配器
-        mAddNewNote = (Button) findViewById(R.id.btn_new_note); // 获取新建笔记按钮
-        mAddNewNote.setOnClickListener(this); // 设置点击监听器
-        mAddNewNote.setOnTouchListener(new NewNoteOnTouchListener()); // 设置触摸监听器
+        mContentResolver = this.getContentResolver();
+        mBackgroundQueryHandler = new BackgroundQueryHandler(this.getContentResolver());
+        mCurrentFolderId = Notes.ID_ROOT_FOLDER;
+        mNotesListView = (ListView) findViewById(R.id.notes_list);
+        mNotesListView.addFooterView(LayoutInflater.from(this).inflate(R.layout.note_list_footer, null),
+                null, false);
+        mNotesListView.setOnItemClickListener(new OnListItemClickListener());
+        mNotesListView.setOnItemLongClickListener(this);
+        mNotesListAdapter = new NotesListAdapter(this);
+        mNotesListView.setAdapter(mNotesListAdapter);
+        mAddNewNote = (Button) findViewById(R.id.btn_new_note);
+        mAddNewNote.setOnClickListener(this);
+        mAddNewNote.setOnTouchListener(new NewNoteOnTouchListener());
         mDispatch = false;
         mDispatchY = 0;
         mOriginY = 0;
-        mTitleBar = (TextView) findViewById(R.id.tv_title_bar); // 获取标题栏视图
-        mState = ListEditState.NOTE_LIST; // 设置列表编辑状态为笔记列表
-        mModeCallBack = new ModeCallback(); // 创建多选模式回调
+        mTitleBar = (TextView) findViewById(R.id.tv_title_bar);
+        mState = ListEditState.NOTE_LIST;
+        mModeCallBack = new ModeCallback();
     }
 
     private class ModeCallback implements ListView.MultiChoiceModeListener, OnMenuItemClickListener {
@@ -225,76 +237,85 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         private MenuItem mMoveMenu;
 
         public boolean onCreateActionMode(ActionMode mode, Menu menu) {
-            getMenuInflater().inflate(R.menu.note_list_options, menu); // 加载菜单资源
-            menu.findItem(R.id.delete).setOnMenuItemClickListener(this); // 设置菜单项点击监听器
+            getMenuInflater().inflate(R.menu.note_list_options, menu);
+            menu.findItem(R.id.delete).setOnMenuItemClickListener(this);
             mMoveMenu = menu.findItem(R.id.move);
-            if (mFocusNoteDataItem.getParentId() == Notes.ID_CALL_RECORD_FOLDER || DataUtils.getUserFolderCount(mContentResolver) == 0) {
-                mMoveMenu.setVisible(false); // 如果是通话记录文件夹或没有用户文件夹，则隐藏移动菜单项
+            if (mFocusNoteDataItem.getParentId() == Notes.ID_CALL_RECORD_FOLDER
+                    || DataUtils.getUserFolderCount(mContentResolver) == 0) {
+                mMoveMenu.setVisible(false);
             } else {
                 mMoveMenu.setVisible(true);
-                mMoveMenu.setOnMenuItemClickListener(this); // 设置菜单项点击监听器
+                mMoveMenu.setOnMenuItemClickListener(this);
             }
             mActionMode = mode;
-            mNotesListAdapter.setChoiceMode(true); // 设置适配器为选择模式
-            mNotesListView.setLongClickable(false); // 禁用长按事件
-            mAddNewNote.setVisibility(View.GONE); // 隐藏新建笔记按钮
-
-            View customView = LayoutInflater.from(NotesListActivity.this).inflate(R.layout.note_list_dropdown_menu, null); // 加载自定义视图
-            mode.setCustomView(customView); // 设置自定义视图
-            mDropDownMenu = new DropdownMenu(NotesListActivity.this, (Button) customView.findViewById(R.id.selection_menu), R.menu.note_list_dropdown); // 创建下拉菜单
-            mDropDownMenu.setOnDropdownMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
+            mNotesListAdapter.setChoiceMode(true);
+            mNotesListView.setLongClickable(false);
+            mAddNewNote.setVisibility(View.GONE);
+
+            View customView = LayoutInflater.from(NotesListActivity.this).inflate(
+                    R.layout.note_list_dropdown_menu, null);
+            mode.setCustomView(customView);
+            mDropDownMenu = new DropdownMenu(NotesListActivity.this,
+                    (Button) customView.findViewById(R.id.selection_menu),
+                    R.menu.note_list_dropdown);
+            mDropDownMenu.setOnDropdownMenuItemClickListener(new PopupMenu.OnMenuItemClickListener(){
                 public boolean onMenuItemClick(MenuItem item) {
-                    mNotesListAdapter.selectAll(!mNotesListAdapter.isAllSelected()); // 选择或取消选择所有项
-                    updateMenu(); // 更新菜单
+                    mNotesListAdapter.selectAll(!mNotesListAdapter.isAllSelected());
+                    updateMenu();
                     return true;
                 }
+
             });
             return true;
         }
 
         private void updateMenu() {
-            int selectedCount = mNotesListAdapter.getSelectedCount(); // 获取已选择的项数
-            // 更新下拉菜单
+            int selectedCount = mNotesListAdapter.getSelectedCount();
+            // Update dropdown menu
             String format = getResources().getString(R.string.menu_select_title, selectedCount);
             mDropDownMenu.setTitle(format);
             MenuItem item = mDropDownMenu.findItem(R.id.action_select_all);
             if (item != null) {
                 if (mNotesListAdapter.isAllSelected()) {
                     item.setChecked(true);
-                    item.setTitle(R.string.menu_deselect_all); // 设置为取消选择全部
+                    item.setTitle(R.string.menu_deselect_all);
                 } else {
                     item.setChecked(false);
-                    item.setTitle(R.string.menu_select_all); // 设置为选择全部
+                    item.setTitle(R.string.menu_select_all);
                 }
             }
         }
 
         public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
+            // TODO Auto-generated method stub
             return false;
         }
 
         public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
+            // TODO Auto-generated method stub
             return false;
         }
 
         public void onDestroyActionMode(ActionMode mode) {
-            mNotesListAdapter.setChoiceMode(false); // 退出选择模式
-            mNotesListView.setLongClickable(true); // 恢复长按事件
-            mAddNewNote.setVisibility(View.VISIBLE); // 显示新建笔记按钮
+            mNotesListAdapter.setChoiceMode(false);
+            mNotesListView.setLongClickable(true);
+            mAddNewNote.setVisibility(View.VISIBLE);
         }
 
         public void finishActionMode() {
-            mActionMode.finish(); // 结束多选模式
+            mActionMode.finish();
         }
 
-        public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {
-            mNotesListAdapter.setCheckedItem(position, checked); // 设置选中状态
-            updateMenu(); // 更新菜单
+        public void onItemCheckedStateChanged(ActionMode mode, int position, long id,
+                boolean checked) {
+            mNotesListAdapter.setCheckedItem(position, checked);
+            updateMenu();
         }
 
         public boolean onMenuItemClick(MenuItem item) {
             if (mNotesListAdapter.getSelectedCount() == 0) {
-                Toast.makeText(NotesListActivity.this, getString(R.string.menu_select_none), Toast.LENGTH_SHORT).show(); // 显示未选择任何项的提示
+                Toast.makeText(NotesListActivity.this, getString(R.string.menu_select_none),
+                        Toast.LENGTH_SHORT).show();
                 return true;
             }
 
@@ -303,17 +324,20 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
                     AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
                     builder.setTitle(getString(R.string.alert_title_delete));
                     builder.setIcon(android.R.drawable.ic_dialog_alert);
-                    builder.setMessage(getString(R.string.alert_message_delete_notes, mNotesListAdapter.getSelectedCount())); // 设置删除确认对话框
-                    builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
-                        public void onClick(DialogInterface dialog, int which) {
-                            batchDelete(); // 批量删除
-                        }
-                    });
+                    builder.setMessage(getString(R.string.alert_message_delete_notes,
+                                             mNotesListAdapter.getSelectedCount()));
+                    builder.setPositiveButton(android.R.string.ok,
+                                             new DialogInterface.OnClickListener() {
+                                                 public void onClick(DialogInterface dialog,
+                                                         int which) {
+                                                     batchDelete();
+                                                 }
+                                             });
                     builder.setNegativeButton(android.R.string.cancel, null);
                     builder.show();
                     break;
                 case R.id.move:
-                    startQueryDestinationFolders(); // 开始查询目标文件夹
+                    startQueryDestinationFolders();
                     break;
                 default:
                     return false;
@@ -323,21 +347,36 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     }
 
     private class NewNoteOnTouchListener implements OnTouchListener {
+
         public boolean onTouch(View v, MotionEvent event) {
             switch (event.getAction()) {
-                case MotionEvent.ACTION_DOWN:
+                case MotionEvent.ACTION_DOWN: {
                     Display display = getWindowManager().getDefaultDisplay();
                     int screenHeight = display.getHeight();
                     int newNoteViewHeight = mAddNewNote.getHeight();
                     int start = screenHeight - newNoteViewHeight;
                     int eventY = start + (int) event.getY();
+                    /**
+                     * Minus TitleBar's height
+                     */
                     if (mState == ListEditState.SUB_FOLDER) {
                         eventY -= mTitleBar.getHeight();
                         start -= mTitleBar.getHeight();
                     }
+                    /**
+                     * HACKME:When click the transparent part of "New Note" button, dispatch
+                     * the event to the list view behind this button. The transparent part of
+                     * "New Note" button could be expressed by formula y=-0.12x+94（Unit:pixel）
+                     * and the line top of the button. The coordinate based on left of the "New
+                     * Note" button. The 94 represents maximum height of the transparent part.
+                     * Notice that, if the background of the button changes, the formula should
+                     * also change. This is very bad, just for the UI designer's strong requirement.
+                     */
                     if (event.getY() < (event.getX() * (-0.12) + 94)) {
-                        View view = mNotesListView.getChildAt(mNotesListView.getChildCount() - 1 - mNotesListView.getFooterViewsCount());
-                        if (view != null && view.getBottom() > start && (view.getTop() < (start + 94))) {
+                        View view = mNotesListView.getChildAt(mNotesListView.getChildCount() - 1
+                                - mNotesListView.getFooterViewsCount());
+                        if (view != null && view.getBottom() > start
+                                && (view.getTop() < (start + 94))) {
                             mOriginY = (int) event.getY();
                             mDispatchY = eventY;
                             event.setLocation(event.getX(), mDispatchY);
@@ -346,28 +385,36 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
                         }
                     }
                     break;
-                case MotionEvent.ACTION_MOVE:
+                }
+                case MotionEvent.ACTION_MOVE: {
                     if (mDispatch) {
                         mDispatchY += (int) event.getY() - mOriginY;
                         event.setLocation(event.getX(), mDispatchY);
                         return mNotesListView.dispatchTouchEvent(event);
                     }
                     break;
-                default:
+                }
+                default: {
                     if (mDispatch) {
                         event.setLocation(event.getX(), mDispatchY);
                         mDispatch = false;
                         return mNotesListView.dispatchTouchEvent(event);
                     }
                     break;
+                }
             }
             return false;
         }
-    }
+
+    };
 
     private void startAsyncNotesListQuery() {
-        String selection = (mCurrentFolderId == Notes.ID_ROOT_FOLDER) ? ROOT_FOLDER_SELECTION : NORMAL_SELECTION;
-        mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null, Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, new String[] { String.valueOf(mCurrentFolderId) }, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
+        String selection = (mCurrentFolderId == Notes.ID_ROOT_FOLDER) ? ROOT_FOLDER_SELECTION
+                : NORMAL_SELECTION;
+        mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null,
+                Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, new String[] {
+                    String.valueOf(mCurrentFolderId)
+                }, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
     }
 
     private final class BackgroundQueryHandler extends AsyncQueryHandler {
@@ -379,13 +426,13 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
             switch (token) {
                 case FOLDER_NOTE_LIST_QUERY_TOKEN:
-                    mNotesListAdapter.changeCursor(cursor); // 更改游标以更新列表
+                    mNotesListAdapter.changeCursor(cursor);
                     break;
                 case FOLDER_LIST_QUERY_TOKEN:
                     if (cursor != null && cursor.getCount() > 0) {
-                        showFolderListMenu(cursor); // 显示文件夹列表菜单
+                        showFolderListMenu(cursor);
                     } else {
-                        Log.e(TAG, "查询文件夹失败");
+                        Log.e(TAG, "Query folder failed");
                     }
                     break;
                 default:
@@ -399,10 +446,17 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         builder.setTitle(R.string.menu_title_select_folder);
         final FoldersListAdapter adapter = new FoldersListAdapter(this, cursor);
         builder.setAdapter(adapter, new DialogInterface.OnClickListener() {
+
             public void onClick(DialogInterface dialog, int which) {
-                DataUtils.batchMoveToFolder(mContentResolver, mNotesListAdapter.getSelectedItemIds(), adapter.getItemId(which)); // 批量移动到文件夹
-                Toast.makeText(NotesListActivity.this, getString(R.string.format_move_notes_to_folder, mNotesListAdapter.getSelectedCount(), adapter.getFolderName(NotesListActivity.this, which)), Toast.LENGTH_SHORT).show(); // 显示移动成功的提示
-                mModeCallBack.finishActionMode(); // 结束多选模式
+                DataUtils.batchMoveToFolder(mContentResolver,
+                        mNotesListAdapter.getSelectedItemIds(), adapter.getItemId(which));
+                Toast.makeText(
+                        NotesListActivity.this,
+                        getString(R.string.format_move_notes_to_folder,
+                                mNotesListAdapter.getSelectedCount(),
+                                adapter.getFolderName(NotesListActivity.this, which)),
+                        Toast.LENGTH_SHORT).show();
+                mModeCallBack.finishActionMode();
             }
         });
         builder.show();
@@ -412,21 +466,26 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         Intent intent = new Intent(this, NoteEditActivity.class);
         intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
         intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mCurrentFolderId);
-        this.startActivityForResult(intent, REQUEST_CODE_NEW_NODE); // 启动新建笔记活动
+        this.startActivityForResult(intent, REQUEST_CODE_NEW_NODE);
     }
 
     private void batchDelete() {
         new AsyncTask<Void, Void, HashSet<AppWidgetAttribute>>() {
             protected HashSet<AppWidgetAttribute> doInBackground(Void... unused) {
-                HashSet<AppWidgetAttribute> widgets = mNotesListAdapter.getSelectedWidget(); // 获取选中的小部件属性
+                HashSet<AppWidgetAttribute> widgets = mNotesListAdapter.getSelectedWidget();
                 if (!isSyncMode()) {
-                    if (DataUtils.batchDeleteNotes(mContentResolver, mNotesListAdapter.getSelectedItemIds())) { // 批量删除笔记
+                    // if not synced, delete notes directly
+                    if (DataUtils.batchDeleteNotes(mContentResolver, mNotesListAdapter
+                            .getSelectedItemIds())) {
                     } else {
-                        Log.e(TAG, "删除笔记错误，不应该发生");
+                        Log.e(TAG, "Delete notes error, should not happens");
                     }
                 } else {
-                    if (!DataUtils.batchMoveToFolder(mContentResolver, mNotesListAdapter.getSelectedItemIds(), Notes.ID_TRASH_FOLER)) { // 批量移动到回收站文件夹
-                        Log.e(TAG, "移动笔记到回收站文件夹错误，不应该发生");
+                    // in sync mode, we'll move the deleted note into the trash
+                    // folder
+                    if (!DataUtils.batchMoveToFolder(mContentResolver, mNotesListAdapter
+                            .getSelectedItemIds(), Notes.ID_TRASH_FOLER)) {
+                        Log.e(TAG, "Move notes to trash folder error, should not happens");
                     }
                 }
                 return widgets;
@@ -436,34 +495,39 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
             protected void onPostExecute(HashSet<AppWidgetAttribute> widgets) {
                 if (widgets != null) {
                     for (AppWidgetAttribute widget : widgets) {
-                        if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID && widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) {
-                            updateWidget(widget.widgetId, widget.widgetType); // 更新小部件
+                        if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID
+                                && widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) {
+                            updateWidget(widget.widgetId, widget.widgetType);
                         }
                     }
                 }
-                mModeCallBack.finishActionMode(); // 结束多选模式
+                mModeCallBack.finishActionMode();
             }
         }.execute();
     }
 
     private void deleteFolder(long folderId) {
         if (folderId == Notes.ID_ROOT_FOLDER) {
-            Log.e(TAG, "错误的文件夹 ID，不应该发生 " + folderId);
+            Log.e(TAG, "Wrong folder id, should not happen " + folderId);
             return;
         }
 
         HashSet<Long> ids = new HashSet<Long>();
         ids.add(folderId);
-        HashSet<AppWidgetAttribute> widgets = DataUtils.getFolderNoteWidget(mContentResolver, folderId);
+        HashSet<AppWidgetAttribute> widgets = DataUtils.getFolderNoteWidget(mContentResolver,
+                folderId);
         if (!isSyncMode()) {
-            DataUtils.batchDeleteNotes(mContentResolver, ids); // 批量删除笔记
+            // if not synced, delete folder directly
+            DataUtils.batchDeleteNotes(mContentResolver, ids);
         } else {
-            DataUtils.batchMoveToFolder(mContentResolver, ids, Notes.ID_TRASH_FOLER); // 批量移动到回收站文件夹
+            // in sync mode, we'll move the deleted folder into the trash folder
+            DataUtils.batchMoveToFolder(mContentResolver, ids, Notes.ID_TRASH_FOLER);
         }
         if (widgets != null) {
             for (AppWidgetAttribute widget : widgets) {
-                if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID && widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) {
-                    updateWidget(widget.widgetId, widget.widgetType); // 更新小部件
+                if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID
+                        && widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) {
+                    updateWidget(widget.widgetId, widget.widgetType);
                 }
             }
         }
@@ -473,30 +537,30 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         Intent intent = new Intent(this, NoteEditActivity.class);
         intent.setAction(Intent.ACTION_VIEW);
         intent.putExtra(Intent.EXTRA_UID, data.getId());
-        this.startActivityForResult(intent, REQUEST_CODE_OPEN_NODE); // 启动查看笔记活动
+        this.startActivityForResult(intent, REQUEST_CODE_OPEN_NODE);
     }
 
     private void openFolder(NoteItemData data) {
         mCurrentFolderId = data.getId();
-        startAsyncNotesListQuery(); // 开始异步查询笔记列表
+        startAsyncNotesListQuery();
         if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
             mState = ListEditState.CALL_RECORD_FOLDER;
-            mAddNewNote.setVisibility(View.GONE); // 隐藏新建笔记按钮
+            mAddNewNote.setVisibility(View.GONE);
         } else {
             mState = ListEditState.SUB_FOLDER;
         }
         if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
-            mTitleBar.setText(R.string.call_record_folder_name); // 设置标题栏文本为通话记录文件夹名称
+            mTitleBar.setText(R.string.call_record_folder_name);
         } else {
-            mTitleBar.setText(data.getSnippet()); // 设置标题栏文本为文件夹名称
+            mTitleBar.setText(data.getSnippet());
         }
-        mTitleBar.setVisibility(View.VISIBLE); // 显示标题栏
+        mTitleBar.setVisibility(View.VISIBLE);
     }
 
     public void onClick(View v) {
         switch (v.getId()) {
             case R.id.btn_new_note:
-                createNewNote(); // 创建新笔记
+                createNewNote();
                 break;
             default:
                 break;
@@ -506,13 +570,13 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     private void showSoftInput() {
         InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
         if (inputMethodManager != null) {
-            inputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0); // 显示软键盘
+            inputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
         }
     }
 
     private void hideSoftInput(View view) {
         InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
-        inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0); // 隐藏软键盘
+        inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
     }
 
     private void showCreateOrModifyFolderDialog(final boolean create) {
@@ -522,15 +586,15 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         showSoftInput();
         if (!create) {
             if (mFocusNoteDataItem != null) {
-                etName.setText(mFocusNoteDataItem.getSnippet()); // 设置文件夹名称
-                builder.setTitle(getString(R.string.menu_folder_change_name)); // 设置对话框标题为更改文件夹名称
+                etName.setText(mFocusNoteDataItem.getSnippet());
+                builder.setTitle(getString(R.string.menu_folder_change_name));
             } else {
-                Log.e(TAG, "长按的数据项为空");
+                Log.e(TAG, "The long click data item is null");
                 return;
             }
         } else {
             etName.setText("");
-            builder.setTitle(this.getString(R.string.menu_create_folder)); // 设置对话框标题为创建文件夹
+            builder.setTitle(this.getString(R.string.menu_create_folder));
         }
 
         builder.setPositiveButton(android.R.string.ok, null);
@@ -541,13 +605,14 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         });
 
         final Dialog dialog = builder.setView(view).show();
-        final Button positive = (Button) dialog.findViewById(android.R.id.button1);
+        final Button positive = (Button)dialog.findViewById(android.R.id.button1);
         positive.setOnClickListener(new OnClickListener() {
             public void onClick(View v) {
                 hideSoftInput(etName);
                 String name = etName.getText().toString();
                 if (DataUtils.checkVisibleFolderName(mContentResolver, name)) {
-                    Toast.makeText(NotesListActivity.this, getString(R.string.folder_exist, name), Toast.LENGTH_LONG).show(); // 显示文件夹已存在的提示
+                    Toast.makeText(NotesListActivity.this, getString(R.string.folder_exist, name),
+                            Toast.LENGTH_LONG).show();
                     etName.setSelection(0, etName.length());
                     return;
                 }
@@ -557,13 +622,16 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
                         values.put(NoteColumns.SNIPPET, name);
                         values.put(NoteColumns.TYPE, Notes.TYPE_FOLDER);
                         values.put(NoteColumns.LOCAL_MODIFIED, 1);
-                        mContentResolver.update(Notes.CONTENT_NOTE_URI, values, NoteColumns.ID + "=?", new String[] { String.valueOf(mFocusNoteDataItem.getId()) }); // 更新文件夹名称
+                        mContentResolver.update(Notes.CONTENT_NOTE_URI, values, NoteColumns.ID
+                                + "=?", new String[] {
+                            String.valueOf(mFocusNoteDataItem.getId())
+                        });
                     }
                 } else if (!TextUtils.isEmpty(name)) {
                     ContentValues values = new ContentValues();
                     values.put(NoteColumns.SNIPPET, name);
                     values.put(NoteColumns.TYPE, Notes.TYPE_FOLDER);
-                    mContentResolver.insert(Notes.CONTENT_NOTE_URI, values); // 插入新文件夹
+                    mContentResolver.insert(Notes.CONTENT_NOTE_URI, values);
                 }
                 dialog.dismiss();
             }
@@ -572,8 +640,13 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         if (TextUtils.isEmpty(etName.getText())) {
             positive.setEnabled(false);
         }
+        /**
+         * When the name edit text is null, disable the positive button
+         */
         etName.addTextChangedListener(new TextWatcher() {
             public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+                // TODO Auto-generated method stub
+
             }
 
             public void onTextChanged(CharSequence s, int start, int before, int count) {
@@ -585,6 +658,8 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
             }
 
             public void afterTextChanged(Editable s) {
+                // TODO Auto-generated method stub
+
             }
         });
     }
@@ -595,18 +670,18 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
             case SUB_FOLDER:
                 mCurrentFolderId = Notes.ID_ROOT_FOLDER;
                 mState = ListEditState.NOTE_LIST;
-                startAsyncNotesListQuery(); // 返回根文件夹
-                mTitleBar.setVisibility(View.GONE); // 隐藏标题栏
+                startAsyncNotesListQuery();
+                mTitleBar.setVisibility(View.GONE);
                 break;
             case CALL_RECORD_FOLDER:
                 mCurrentFolderId = Notes.ID_ROOT_FOLDER;
                 mState = ListEditState.NOTE_LIST;
-                mAddNewNote.setVisibility(View.VISIBLE); // 显示新建笔记按钮
-                mTitleBar.setVisibility(View.GONE); // 隐藏标题栏
-                startAsyncNotesListQuery(); // 返回根文件夹
+                mAddNewNote.setVisibility(View.VISIBLE);
+                mTitleBar.setVisibility(View.GONE);
+                startAsyncNotesListQuery();
                 break;
             case NOTE_LIST:
-                super.onBackPressed(); // 调用父类的返回键处理方法
+                super.onBackPressed();
                 break;
             default:
                 break;
@@ -620,11 +695,13 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         } else if (appWidgetType == Notes.TYPE_WIDGET_4X) {
             intent.setClass(this, NoteWidgetProvider_4x.class);
         } else {
-            Log.e(TAG, "不支持的小部件类型");
+            Log.e(TAG, "Unspported widget type");
             return;
         }
 
-        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] { appWidgetId });
+        intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] {
+            appWidgetId
+        });
 
         sendBroadcast(intent);
         setResult(RESULT_OK, intent);
@@ -633,10 +710,10 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     private final OnCreateContextMenuListener mFolderOnCreateContextMenuListener = new OnCreateContextMenuListener() {
         public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
             if (mFocusNoteDataItem != null) {
-                menu.setHeaderTitle(mFocusNoteDataItem.getSnippet()); // 设置上下文菜单标题为文件夹名称
-                menu.add(0, MENU_FOLDER_VIEW, 0, R.string.menu_folder_view); // 添加查看文件夹菜单项
-                menu.add(0, MENU_FOLDER_DELETE, 0, R.string.menu_folder_delete); // 添加删除文件夹菜单项
-                menu.add(0, MENU_FOLDER_CHANGE_NAME, 0, R.string.menu_folder_change_name); // 添加更改文件夹名称菜单项
+                menu.setHeaderTitle(mFocusNoteDataItem.getSnippet());
+                menu.add(0, MENU_FOLDER_VIEW, 0, R.string.menu_folder_view);
+                menu.add(0, MENU_FOLDER_DELETE, 0, R.string.menu_folder_delete);
+                menu.add(0, MENU_FOLDER_CHANGE_NAME, 0, R.string.menu_folder_change_name);
             }
         }
     };
@@ -644,7 +721,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     @Override
     public void onContextMenuClosed(Menu menu) {
         if (mNotesListView != null) {
-            mNotesListView.setOnCreateContextMenuListener(null); // 移除上下文菜单创建监听器
+            mNotesListView.setOnCreateContextMenuListener(null);
         }
         super.onContextMenuClosed(menu);
     }
@@ -652,28 +729,29 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     @Override
     public boolean onContextItemSelected(MenuItem item) {
         if (mFocusNoteDataItem == null) {
-            Log.e(TAG, "长按的数据项为空");
+            Log.e(TAG, "The long click data item is null");
             return false;
         }
         switch (item.getItemId()) {
             case MENU_FOLDER_VIEW:
-                openFolder(mFocusNoteDataItem); // 打开文件夹
+                openFolder(mFocusNoteDataItem);
                 break;
             case MENU_FOLDER_DELETE:
                 AlertDialog.Builder builder = new AlertDialog.Builder(this);
                 builder.setTitle(getString(R.string.alert_title_delete));
                 builder.setIcon(android.R.drawable.ic_dialog_alert);
-                builder.setMessage(getString(R.string.alert_message_delete_folder)); // 设置删除文件夹确认对话框
-                builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
-                    public void onClick(DialogInterface dialog, int which) {
-                        deleteFolder(mFocusNoteDataItem.getId()); // 删除文件夹
-                    }
-                });
+                builder.setMessage(getString(R.string.alert_message_delete_folder));
+                builder.setPositiveButton(android.R.string.ok,
+                        new DialogInterface.OnClickListener() {
+                            public void onClick(DialogInterface dialog, int which) {
+                                deleteFolder(mFocusNoteDataItem.getId());
+                            }
+                        });
                 builder.setNegativeButton(android.R.string.cancel, null);
                 builder.show();
                 break;
             case MENU_FOLDER_CHANGE_NAME:
-                showCreateOrModifyFolderDialog(false); // 显示创建或修改文件夹对话框
+                showCreateOrModifyFolderDialog(false);
                 break;
             default:
                 break;
@@ -687,13 +765,15 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         menu.clear();
         if (mState == ListEditState.NOTE_LIST) {
             getMenuInflater().inflate(R.menu.note_list, menu);
-            menu.findItem(R.id.menu_sync).setTitle(GTaskSyncService.isSyncing() ? R.string.menu_sync_cancel : R.string.menu_sync); // 设置同步菜单项标题
+            // set sync or sync_cancel
+            menu.findItem(R.id.menu_sync).setTitle(
+                    GTaskSyncService.isSyncing() ? R.string.menu_sync_cancel : R.string.menu_sync);
         } else if (mState == ListEditState.SUB_FOLDER) {
             getMenuInflater().inflate(R.menu.sub_folder, menu);
         } else if (mState == ListEditState.CALL_RECORD_FOLDER) {
             getMenuInflater().inflate(R.menu.call_record_folder, menu);
         } else {
-            Log.e(TAG, "错误的状态：" + mState);
+            Log.e(TAG, "Wrong state:" + mState);
         }
         return true;
     }
@@ -701,29 +781,34 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
-            case R.id.menu_new_folder:
-                showCreateOrModifyFolderDialog(true); // 显示创建文件夹对话框
+            case R.id.menu_new_folder: {
+                showCreateOrModifyFolderDialog(true);
                 break;
-            case R.id.menu_export_text:
-                exportNoteToText(); // 导出笔记为文本文件
+            }
+            case R.id.menu_export_text: {
+                exportNoteToText();
                 break;
-            case R.id.menu_sync:
+            }
+            case R.id.menu_sync: {
                 if (isSyncMode()) {
                     if (TextUtils.equals(item.getTitle(), getString(R.string.menu_sync))) {
-                        GTaskSyncService.startSync(this); // 开始同步
+                        GTaskSyncService.startSync(this);
                     } else {
-                        GTaskSyncService.cancelSync(this); // 取消同步
+                        GTaskSyncService.cancelSync(this);
                     }
                 } else {
-                    startPreferenceActivity(); // 启动偏好设置活动
+                    startPreferenceActivity();
                 }
                 break;
-            case R.id.menu_setting:
-                startPreferenceActivity(); // 启动偏好设置活动
+            }
+            case R.id.menu_setting: {
+                startPreferenceActivity();
                 break;
-            case R.id.menu_new_note:
-                createNewNote(); // 创建新笔记
+            }
+            case R.id.menu_new_note: {
+                createNewNote();
                 break;
+            }
             case R.id.menu_search:
                 onSearchRequested();
                 break;
@@ -735,7 +820,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
 
     @Override
     public boolean onSearchRequested() {
-        startSearch(null, false, null, false);
+        startSearch(null, false, null /* appData */, false);
         return true;
     }
 
@@ -745,27 +830,34 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
 
             @Override
             protected Integer doInBackground(Void... unused) {
-                return backup.exportToText(); // 导出笔记为文本文件
+                return backup.exportToText();
             }
 
             @Override
             protected void onPostExecute(Integer result) {
                 if (result == BackupUtils.STATE_SD_CARD_UNMOUONTED) {
                     AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
-                    builder.setTitle(NotesListActivity.this.getString(R.string.failed_sdcard_export));
-                    builder.setMessage(NotesListActivity.this.getString(R.string.error_sdcard_unmounted));
+                    builder.setTitle(NotesListActivity.this
+                            .getString(R.string.failed_sdcard_export));
+                    builder.setMessage(NotesListActivity.this
+                            .getString(R.string.error_sdcard_unmounted));
                     builder.setPositiveButton(android.R.string.ok, null);
                     builder.show();
                 } else if (result == BackupUtils.STATE_SUCCESS) {
                     AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
-                    builder.setTitle(NotesListActivity.this.getString(R.string.success_sdcard_export));
-                    builder.setMessage(NotesListActivity.this.getString(R.string.format_exported_file_location, backup.getExportedTextFileName(), backup.getExportedTextFileDir()));
+                    builder.setTitle(NotesListActivity.this
+                            .getString(R.string.success_sdcard_export));
+                    builder.setMessage(NotesListActivity.this.getString(
+                            R.string.format_exported_file_location, backup
+                                    .getExportedTextFileName(), backup.getExportedTextFileDir()));
                     builder.setPositiveButton(android.R.string.ok, null);
                     builder.show();
                 } else if (result == BackupUtils.STATE_SYSTEM_ERROR) {
                     AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
-                    builder.setTitle(NotesListActivity.this.getString(R.string.failed_sdcard_export));
-                    builder.setMessage(NotesListActivity.this.getString(R.string.error_sdcard_export));
+                    builder.setTitle(NotesListActivity.this
+                            .getString(R.string.failed_sdcard_export));
+                    builder.setMessage(NotesListActivity.this
+                            .getString(R.string.error_sdcard_export));
                     builder.setPositiveButton(android.R.string.ok, null);
                     builder.show();
                 }
@@ -775,13 +867,13 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     }
 
     private boolean isSyncMode() {
-        return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0; // 判断是否为同步模式
+        return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0;
     }
 
     private void startPreferenceActivity() {
         Activity from = getParent() != null ? getParent() : this;
         Intent intent = new Intent(from, NotesPreferenceActivity.class);
-        from.startActivityIfNeeded(intent, -1); // 启动偏好设置活动
+        from.startActivityIfNeeded(intent, -1);
     }
 
     private class OnListItemClickListener implements OnItemClickListener {
@@ -792,27 +884,29 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
                 if (mNotesListAdapter.isInChoiceMode()) {
                     if (item.getType() == Notes.TYPE_NOTE) {
                         position = position - mNotesListView.getHeaderViewsCount();
-                        mModeCallBack.onItemCheckedStateChanged(null, position, id, !mNotesListAdapter.isSelectedItem(position)); // 切换选中状态
+                        mModeCallBack.onItemCheckedStateChanged(null, position, id,
+                                !mNotesListAdapter.isSelectedItem(position));
                     }
                     return;
                 }
 
                 switch (mState) {
                     case NOTE_LIST:
-                        if (item.getType() == Notes.TYPE_FOLDER || item.getType() == Notes.TYPE_SYSTEM) {
-                            openFolder(item); // 打开文件夹
+                        if (item.getType() == Notes.TYPE_FOLDER
+                                || item.getType() == Notes.TYPE_SYSTEM) {
+                            openFolder(item);
                         } else if (item.getType() == Notes.TYPE_NOTE) {
-                            openNode(item); // 打开笔记
+                            openNode(item);
                         } else {
-                            Log.e(TAG, "笔记列表中的错误笔记类型");
+                            Log.e(TAG, "Wrong note type in NOTE_LIST");
                         }
                         break;
                     case SUB_FOLDER:
                     case CALL_RECORD_FOLDER:
                         if (item.getType() == Notes.TYPE_NOTE) {
-                            openNode(item); // 打开笔记
+                            openNode(item);
                         } else {
-                            Log.e(TAG, "子文件夹中的错误笔记类型");
+                            Log.e(TAG, "Wrong note type in SUB_FOLDER");
                         }
                         break;
                     default:
@@ -825,8 +919,20 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
 
     private void startQueryDestinationFolders() {
         String selection = NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>? AND " + NoteColumns.ID + "<>?";
-        selection = (mState == ListEditState.NOTE_LIST) ? selection : "(" + selection + ") OR (" + NoteColumns.ID + "=" + Notes.ID_ROOT_FOLDER + ")";
-        mBackgroundQueryHandler.startQuery(FOLDER_LIST_QUERY_TOKEN, null, Notes.CONTENT_NOTE_URI, FoldersListAdapter.PROJECTION, selection, new String[] { String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER), String.valueOf(mCurrentFolderId) }, NoteColumns.MODIFIED_DATE + " DESC");
+        selection = (mState == ListEditState.NOTE_LIST) ? selection:
+            "(" + selection + ") OR (" + NoteColumns.ID + "=" + Notes.ID_ROOT_FOLDER + ")";
+
+        mBackgroundQueryHandler.startQuery(FOLDER_LIST_QUERY_TOKEN,
+                null,
+                Notes.CONTENT_NOTE_URI,
+                FoldersListAdapter.PROJECTION,
+                selection,
+                new String[] {
+                        String.valueOf(Notes.TYPE_FOLDER),
+                        String.valueOf(Notes.ID_TRASH_FOLER),
+                        String.valueOf(mCurrentFolderId)
+                },
+                NoteColumns.MODIFIED_DATE + " DESC");
     }
 
     public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
@@ -834,15 +940,15 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
             mFocusNoteDataItem = ((NotesListItem) view).getItemData();
             if (mFocusNoteDataItem.getType() == Notes.TYPE_NOTE && !mNotesListAdapter.isInChoiceMode()) {
                 if (mNotesListView.startActionMode(mModeCallBack) != null) {
-                    mModeCallBack.onItemCheckedStateChanged(null, position, id, true); // 进入多选模式并选中当前项
-                    mNotesListView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); // 执行触觉反馈
+                    mModeCallBack.onItemCheckedStateChanged(null, position, id, true);
+                    mNotesListView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
                 } else {
-                    Log.e(TAG, "进入多选模式失败");
+                    Log.e(TAG, "startActionMode fails");
                 }
             } else if (mFocusNoteDataItem.getType() == Notes.TYPE_FOLDER) {
-                mNotesListView.setOnCreateContextMenuListener(mFolderOnCreateContextMenuListener); // 设置上下文菜单创建监听器
+                mNotesListView.setOnCreateContextMenuListener(mFolderOnCreateContextMenuListener);
             }
         }
         return false;
     }
-}
+}

java/net/micode/notes/ui/NotesListAdapter.java

@@ -5,7 +5,7 @@
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- *        <url id="d0s4mbuf5ku6itl3bdkg" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url> 
+ *        http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -38,13 +38,11 @@ public class NotesListAdapter extends CursorAdapter {
     private int mNotesCount;
     private boolean mChoiceMode;
 
-    // 定义应用小部件属性类
     public static class AppWidgetAttribute {
         public int widgetId;
         public int widgetType;
     };
 
-    // 构造函数
     public NotesListAdapter(Context context) {
         super(context, null);
         mSelectedIndex = new HashMap<Integer, Boolean>();
@@ -54,47 +52,43 @@ public class NotesListAdapter extends CursorAdapter {
 
     @Override
     public View newView(Context context, Cursor cursor, ViewGroup parent) {
-        return new NotesListItem(context); // 创建新的笔记列表项视图
+        return new NotesListItem(context);
     }
 
     @Override
     public void bindView(View view, Context context, Cursor cursor) {
         if (view instanceof NotesListItem) {
-            NoteItemData itemData = new NoteItemData(context, cursor); // 创建笔记项数据
-            ((NotesListItem) view).bind(context, itemData, mChoiceMode, isSelectedItem(cursor.getPosition())); // 绑定数据到视图
+            NoteItemData itemData = new NoteItemData(context, cursor);
+            ((NotesListItem) view).bind(context, itemData, mChoiceMode,
+                    isSelectedItem(cursor.getPosition()));
         }
     }
 
-    // 设置选中项
     public void setCheckedItem(final int position, final boolean checked) {
-        mSelectedIndex.put(position, checked); // 更新选中状态
-        notifyDataSetChanged(); // 通知数据已更改
+        mSelectedIndex.put(position, checked);
+        notifyDataSetChanged();
     }
 
-    // 判断是否处于选择模式
     public boolean isInChoiceMode() {
         return mChoiceMode;
     }
 
-    // 设置选择模式
     public void setChoiceMode(boolean mode) {
-        mSelectedIndex.clear(); // 清除选中状态
+        mSelectedIndex.clear();
         mChoiceMode = mode;
     }
 
-    // 选择所有项
     public void selectAll(boolean checked) {
         Cursor cursor = getCursor();
         for (int i = 0; i < getCount(); i++) {
             if (cursor.moveToPosition(i)) {
-                if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) { // 如果是笔记类型
-                    setCheckedItem(i, checked); // 设置选中状态
+                if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) {
+                    setCheckedItem(i, checked);
                 }
             }
         }
     }
 
-    // 获取选中的项 ID 集合
     public HashSet<Long> getSelectedItemIds() {
         HashSet<Long> itemSet = new HashSet<Long>();
         for (Integer position : mSelectedIndex.keySet()) {
@@ -103,7 +97,7 @@ public class NotesListAdapter extends CursorAdapter {
                 if (id == Notes.ID_ROOT_FOLDER) {
                     Log.d(TAG, "Wrong item id, should not happen");
                 } else {
-                    itemSet.add(id); // 添加选中的项 ID
+                    itemSet.add(id);
                 }
             }
         }
@@ -111,7 +105,6 @@ public class NotesListAdapter extends CursorAdapter {
         return itemSet;
     }
 
-    // 获取选中的小部件属性集合
     public HashSet<AppWidgetAttribute> getSelectedWidget() {
         HashSet<AppWidgetAttribute> itemSet = new HashSet<AppWidgetAttribute>();
         for (Integer position : mSelectedIndex.keySet()) {
@@ -120,9 +113,12 @@ public class NotesListAdapter extends CursorAdapter {
                 if (c != null) {
                     AppWidgetAttribute widget = new AppWidgetAttribute();
                     NoteItemData item = new NoteItemData(mContext, c);
-                    widget.widgetId = item.getWidgetId(); // 获取小部件 ID
-                    widget.widgetType = item.getWidgetType(); // 获取小部件类型
-                    itemSet.add(widget); // 添加小部件属性
+                    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;
@@ -132,7 +128,6 @@ public class NotesListAdapter extends CursorAdapter {
         return itemSet;
     }
 
-    // 获取选中的项数
     public int getSelectedCount() {
         Collection<Boolean> values = mSelectedIndex.values();
         if (null == values) {
@@ -148,13 +143,11 @@ public class NotesListAdapter extends CursorAdapter {
         return count;
     }
 
-    // 判断是否全部选中
     public boolean isAllSelected() {
         int checkedCount = getSelectedCount();
-        return (checkedCount != 0 && checkedCount == mNotesCount); // 如果选中数等于笔记数，则全部选中
+        return (checkedCount != 0 && checkedCount == mNotesCount);
     }
 
-    // 判断项是否被选中
     public boolean isSelectedItem(final int position) {
         if (null == mSelectedIndex.get(position)) {
             return false;
@@ -165,22 +158,21 @@ public class NotesListAdapter extends CursorAdapter {
     @Override
     protected void onContentChanged() {
         super.onContentChanged();
-        calcNotesCount(); // 计算笔记数量
+        calcNotesCount();
     }
 
     @Override
     public void changeCursor(Cursor cursor) {
         super.changeCursor(cursor);
-        calcNotesCount(); // 更改游标并计算笔记数量
+        calcNotesCount();
     }
 
-    // 计算笔记数量
     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) { // 如果是笔记类型
+                if (NoteItemData.getNoteType(c) == Notes.TYPE_NOTE) {
                     mNotesCount++;
                 }
             } else {
@@ -189,4 +181,4 @@ public class NotesListAdapter extends CursorAdapter {
             }
         }
     }
-}
+}

java/net/micode/notes/ui/NotesListItem.java

@@ -5,7 +5,7 @@
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- *        <url id="d0s4nev37oq8u4isp1r0" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url>
+ *        http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -31,86 +31,77 @@ import net.micode.notes.tool.ResourceParser.NoteItemBgResources;
 
 
 public class NotesListItem extends LinearLayout {
-    private ImageView mAlert; // 提醒图标
-    private TextView mTitle; // 标题文本视图
-    private TextView mTime; // 时间文本视图
-    private TextView mCallName; // 通话名称文本视图
-    private NoteItemData mItemData; // 笔记项数据
-    private CheckBox mCheckBox; // 复选框
+    private ImageView mAlert;
+    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); // 加载布局文件
-        mAlert = (ImageView) findViewById(R.id.iv_alert_icon); // 获取提醒图标
-        mTitle = (TextView) findViewById(R.id.tv_title); // 获取标题文本视图
-        mTime = (TextView) findViewById(R.id.tv_time); // 获取时间文本视图
-        mCallName = (TextView) findViewById(R.id.tv_name); // 获取通话名称文本视图
-        mCheckBox = (CheckBox) findViewById(android.R.id.checkbox); // 获取复选框
+        inflate(context, R.layout.note_item, this);
+        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);
     }
 
     public void bind(Context context, NoteItemData data, boolean choiceMode, boolean checked) {
-        // 如果启用了选择模式且是笔记类型，则显示复选框并设置选中状态
         if (choiceMode && data.getType() == Notes.TYPE_NOTE) {
             mCheckBox.setVisibility(View.VISIBLE);
             mCheckBox.setChecked(checked);
         } else {
-            mCheckBox.setVisibility(View.GONE); // 隐藏复选框
+            mCheckBox.setVisibility(View.GONE);
         }
 
-        mItemData = data; // 保存笔记项数据
-        // 处理通话记录文件夹
+        mItemData = data;
         if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
-            mCallName.setVisibility(View.GONE); // 隐藏通话名称
-            mAlert.setVisibility(View.VISIBLE); // 显示提醒图标
-            mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem); // 设置标题文本外观
-            mTitle.setText(context.getString(R.string.call_record_folder_name) + context.getString(R.string.format_folder_files_count, data.getNotesCount())); // 设置标题文本
-            mAlert.setImageResource(R.drawable.call_record); // 设置提醒图标资源
-        }
-        // 处理通话记录中的笔记
-        else if (data.getParentId() == Notes.ID_CALL_RECORD_FOLDER) {
-            mCallName.setVisibility(View.VISIBLE); // 显示通话名称
-            mCallName.setText(data.getCallName()); // 设置通话名称
-            mTitle.setTextAppearance(context, R.style.TextAppearanceSecondaryItem); // 设置标题文本外观
-            mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet())); // 设置标题文本
-            // 如果有提醒，则显示提醒图标
+            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); // 隐藏提醒图标
+                mAlert.setVisibility(View.GONE);
             }
-        }
-        // 处理其他类型的笔记或文件夹
-        else {
-            mCallName.setVisibility(View.GONE); // 隐藏通话名称
-            mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem); // 设置标题文本外观
-            // 如果是文件夹类型
+        } 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())); // 设置标题文本
-                mAlert.setVisibility(View.GONE); // 隐藏提醒图标
-            }
-            // 如果是笔记类型
-            else {
-                mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet())); // 设置标题文本
-                // 如果有提醒，则显示提醒图标
+                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); // 隐藏提醒图标
+                    mAlert.setVisibility(View.GONE);
                 }
             }
         }
-        mTime.setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate())); // 设置时间文本
+        mTime.setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate()));
 
-        setBackground(data); // 设置背景
+        setBackground(data);
     }
 
     private void setBackground(NoteItemData data) {
-        int id = data.getBgColorId(); // 获取背景颜色 ID
-        // 如果是笔记类型
+        int id = data.getBgColorId();
         if (data.getType() == Notes.TYPE_NOTE) {
-            // 根据笔记的状态设置不同的背景资源
             if (data.isSingle() || data.isOneFollowingFolder()) {
                 setBackgroundResource(NoteItemBgResources.getNoteBgSingleRes(id));
             } else if (data.isLast()) {
@@ -120,14 +111,12 @@ public class NotesListItem extends LinearLayout {
             } else {
                 setBackgroundResource(NoteItemBgResources.getNoteBgNormalRes(id));
             }
-        }
-        // 如果是文件夹类型
-        else {
+        } else {
             setBackgroundResource(NoteItemBgResources.getFolderBgRes());
         }
     }
 
     public NoteItemData getItemData() {
-        return mItemData; // 返回笔记项数据
+        return mItemData;
     }
-}
+}

java/net/micode/notes/ui/NotesPreferenceActivity.java

@@ -5,7 +5,7 @@
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- *        <url id="d0s4q1f37oq8u4itada0" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url>
+ *        http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -49,48 +49,41 @@ import net.micode.notes.gtask.remote.GTaskSyncService;
 
 
 public class NotesPreferenceActivity extends PreferenceActivity {
-    // 定义偏好设置名称
     public static final String PREFERENCE_NAME = "notes_preferences";
-    // 定义同步账户名称偏好设置键
+
     public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";
-    // 定义最后同步时间偏好设置键
+
     public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";
-    // 定义随机背景颜色偏好设置键
+
     public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";
-    // 定义同步账户偏好设置键
+
     private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";
-    // 定义授权过滤键
+
     private static final String AUTHORITIES_FILTER_KEY = "authorities";
 
-    // 定义账户类别偏好设置
     private PreferenceCategory mAccountCategory;
-    // 定义同步服务广播接收器
+
     private GTaskReceiver mReceiver;
-    // 定义原始账户数组
+
     private Account[] mOriAccounts;
-    // 定义是否已添加账户的标志
+
     private boolean mHasAddedAccount;
 
     @Override
     protected void onCreate(Bundle icicle) {
         super.onCreate(icicle);
 
-        // 设置操作栏回家按钮可用
+        /* using the app icon for navigation */
         getActionBar().setDisplayHomeAsUpEnabled(true);
 
-        // 添加偏好设置资源
         addPreferencesFromResource(R.xml.preferences);
-        // 获取账户类别偏好设置
         mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);
-        // 创建广播接收器
         mReceiver = new GTaskReceiver();
-        // 创建意图过滤器并添加同步服务广播名称
         IntentFilter filter = new IntentFilter();
         filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME);
-        // 注册广播接收器
         registerReceiver(mReceiver, filter);
 
-        // 加载设置头部布局并添加到列表视图
+        mOriAccounts = null;
         View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);
         getListView().addHeaderView(header, null, true);
     }
@@ -99,23 +92,20 @@ public class NotesPreferenceActivity extends PreferenceActivity {
     protected void onResume() {
         super.onResume();
 
-        // 如果用户添加了新账户，则自动设置同步账户
+        // need to set sync account automatically if user has added a new
+        // account
         if (mHasAddedAccount) {
-            // 获取谷歌账户
             Account[] accounts = getGoogleAccounts();
             if (mOriAccounts != null && accounts.length > mOriAccounts.length) {
                 for (Account accountNew : accounts) {
                     boolean found = false;
                     for (Account accountOld : mOriAccounts) {
-                        // 如果找到匹配的账户名称
                         if (TextUtils.equals(accountOld.name, accountNew.name)) {
                             found = true;
                             break;
                         }
                     }
-                    // 如果未找到匹配的账户名称
                     if (!found) {
-                        // 设置同步账户
                         setSyncAccount(accountNew.name);
                         break;
                     }
@@ -123,67 +113,53 @@ public class NotesPreferenceActivity extends PreferenceActivity {
             }
         }
 
-        // 刷新 UI
         refreshUI();
     }
 
     @Override
     protected void onDestroy() {
-        // 注销广播接收器
         if (mReceiver != null) {
             unregisterReceiver(mReceiver);
         }
         super.onDestroy();
     }
 
-    // 加载账户偏好设置
     private void loadAccountPreference() {
-        // 移除所有账户偏好设置
         mAccountCategory.removeAll();
 
-        // 创建新的账户偏好设置
         Preference accountPref = new Preference(this);
-        // 获取默认同步账户名称
         final String defaultAccount = getSyncAccountName(this);
-        // 设置账户偏好设置的标题和摘要
         accountPref.setTitle(getString(R.string.preferences_account_title));
         accountPref.setSummary(getString(R.string.preferences_account_summary));
-        // 设置账户偏好设置的点击监听器
         accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
             public boolean onPreferenceClick(Preference preference) {
-                // 如果同步服务未运行
                 if (!GTaskSyncService.isSyncing()) {
-                    // 如果默认账户名称为空
                     if (TextUtils.isEmpty(defaultAccount)) {
-                        // 显示选择账户对话框
+                        // the first time to set account
                         showSelectAccountAlertDialog();
                     } else {
-                        // 显示更改账户确认对话框
+                        // if the account has already been set, we need to promp
+                        // user about the risk
                         showChangeAccountConfirmAlertDialog();
                     }
                 } else {
-                    // 显示无法更改账户的提示
                     Toast.makeText(NotesPreferenceActivity.this,
-                                    R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT)
+                            R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT)
                             .show();
                 }
                 return true;
             }
         });
 
-        // 添加账户偏好设置到账户类别
         mAccountCategory.addPreference(accountPref);
     }
 
-    // 加载同步按钮
     private void loadSyncButton() {
-        // 获取同步按钮和最后同步时间文本视图
         Button syncButton = (Button) findViewById(R.id.preference_sync_button);
         TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
 
-        // 设置同步按钮状态
+        // set button state
         if (GTaskSyncService.isSyncing()) {
-            // 如果同步服务正在运行，设置按钮文本为取消同步
             syncButton.setText(getString(R.string.preferences_button_sync_cancel));
             syncButton.setOnClickListener(new View.OnClickListener() {
                 public void onClick(View v) {
@@ -191,7 +167,6 @@ public class NotesPreferenceActivity extends PreferenceActivity {
                 }
             });
         } else {
-            // 如果同步服务未运行，设置按钮文本为立即同步
             syncButton.setText(getString(R.string.preferences_button_sync_immediately));
             syncButton.setOnClickListener(new View.OnClickListener() {
                 public void onClick(View v) {
@@ -199,16 +174,13 @@ public class NotesPreferenceActivity extends PreferenceActivity {
                 }
             });
         }
-        // 设置同步按钮可用状态
         syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));
 
-        // 设置最后同步时间文本视图
+        // set last sync time
         if (GTaskSyncService.isSyncing()) {
-            // 如果同步服务正在运行，显示同步进度
             lastSyncTimeView.setText(GTaskSyncService.getProgressString());
             lastSyncTimeView.setVisibility(View.VISIBLE);
         } else {
-            // 如果同步服务未运行，显示最后同步时间
             long lastSyncTime = getLastSyncTime(this);
             if (lastSyncTime != 0) {
                 lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time,
@@ -221,35 +193,29 @@ public class NotesPreferenceActivity extends PreferenceActivity {
         }
     }
 
-    // 刷新 UI
     private void refreshUI() {
-        // 加载账户偏好设置和同步按钮
         loadAccountPreference();
         loadSyncButton();
     }
 
-    // 显示选择账户对话框
     private void showSelectAccountAlertDialog() {
-        // 创建对话框构建器
         AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
 
-        // 加载对话框标题布局
         View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
         TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
         titleTextView.setText(getString(R.string.preferences_dialog_select_account_title));
         TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
         subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips));
+
         dialogBuilder.setCustomTitle(titleView);
+        dialogBuilder.setPositiveButton(null, null);
 
-        // 获取谷歌账户
         Account[] accounts = getGoogleAccounts();
         String defAccount = getSyncAccountName(this);
 
-        // 保存原始账户数组并重置添加账户标志
         mOriAccounts = accounts;
         mHasAddedAccount = false;
 
-        // 如果有谷歌账户，设置单选按钮
         if (accounts.length > 0) {
             CharSequence[] items = new CharSequence[accounts.length];
             final CharSequence[] itemMapping = items;
@@ -264,7 +230,6 @@ public class NotesPreferenceActivity extends PreferenceActivity {
             dialogBuilder.setSingleChoiceItems(items, checkedItem,
                     new DialogInterface.OnClickListener() {
                         public void onClick(DialogInterface dialog, int which) {
-                            // 设置同步账户并关闭对话框
                             setSyncAccount(itemMapping[which].toString());
                             dialog.dismiss();
                             refreshUI();
@@ -272,7 +237,6 @@ public class NotesPreferenceActivity extends PreferenceActivity {
                     });
         }
 
-        // 加载添加账户布局并设置点击监听器
         View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);
         dialogBuilder.setView(addAccountView);
 
@@ -281,19 +245,18 @@ public class NotesPreferenceActivity extends PreferenceActivity {
             public void onClick(View v) {
                 mHasAddedAccount = true;
                 Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");
-                intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] { "gmail-ls" });
+                intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] {
+                    "gmail-ls"
+                });
                 startActivityForResult(intent, -1);
                 dialog.dismiss();
             }
         });
     }
 
-    // 显示更改账户确认对话框
     private void showChangeAccountConfirmAlertDialog() {
-        // 创建对话框构建器
         AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
 
-        // 加载对话框标题布局
         View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
         TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
         titleTextView.setText(getString(R.string.preferences_dialog_change_account_title,
@@ -302,7 +265,6 @@ public class NotesPreferenceActivity extends PreferenceActivity {
         subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg));
         dialogBuilder.setCustomTitle(titleView);
 
-        // 设置菜单项
         CharSequence[] menuItemArray = new CharSequence[] {
                 getString(R.string.preferences_menu_change_account),
                 getString(R.string.preferences_menu_remove_account),
@@ -321,16 +283,13 @@ public class NotesPreferenceActivity extends PreferenceActivity {
         dialogBuilder.show();
     }
 
-    // 获取谷歌账户
     private Account[] getGoogleAccounts() {
         AccountManager accountManager = AccountManager.get(this);
         return accountManager.getAccountsByType("com.google");
     }
 
-    // 设置同步账户
     private void setSyncAccount(String account) {
         if (!getSyncAccountName(this).equals(account)) {
-            // 保存同步账户名称到偏好设置
             SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
             SharedPreferences.Editor editor = settings.edit();
             if (account != null) {
@@ -340,10 +299,10 @@ public class NotesPreferenceActivity extends PreferenceActivity {
             }
             editor.commit();
 
-            // 清除最后同步时间
+            // clean up last sync time
             setLastSyncTime(this, 0);
 
-            // 清除本地与同步相关的数据
+            // clean up local gtask related info
             new Thread(new Runnable() {
                 public void run() {
                     ContentValues values = new ContentValues();
@@ -353,16 +312,13 @@ public class NotesPreferenceActivity extends PreferenceActivity {
                 }
             }).start();
 
-            // 显示设置账户成功的提示
             Toast.makeText(NotesPreferenceActivity.this,
                     getString(R.string.preferences_toast_success_set_accout, account),
                     Toast.LENGTH_SHORT).show();
         }
     }
 
-    // 移除同步账户
     private void removeSyncAccount() {
-        // 移除同步账户名称和最后同步时间
         SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
         SharedPreferences.Editor editor = settings.edit();
         if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) {
@@ -373,7 +329,7 @@ public class NotesPreferenceActivity extends PreferenceActivity {
         }
         editor.commit();
 
-        // 清除本地与同步相关的数据
+        // clean up local gtask related info
         new Thread(new Runnable() {
             public void run() {
                 ContentValues values = new ContentValues();
@@ -384,44 +340,43 @@ public class NotesPreferenceActivity extends PreferenceActivity {
         }).start();
     }
 
-    // 获取同步账户名称
     public static String getSyncAccountName(Context context) {
-        SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
+        SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
+                Context.MODE_PRIVATE);
         return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
     }
 
-    // 设置最后同步时间
     public static void setLastSyncTime(Context context, long time) {
-        SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
+        SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
+                Context.MODE_PRIVATE);
         SharedPreferences.Editor editor = settings.edit();
         editor.putLong(PREFERENCE_LAST_SYNC_TIME, time);
         editor.commit();
     }
 
-    // 获取最后同步时间
     public static long getLastSyncTime(Context context) {
-        SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
+        SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
+                Context.MODE_PRIVATE);
         return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0);
     }
 
-    // 定义同步服务广播接收器
     private class GTaskReceiver extends BroadcastReceiver {
+
         @Override
         public void onReceive(Context context, Intent intent) {
-            // 刷新 UI 并更新同步状态文本
             refreshUI();
             if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {
                 TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
-                syncStatus.setText(intent.getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
+                syncStatus.setText(intent
+                        .getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
             }
+
         }
     }
 
-    // 处理菜单项点击事件
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
             case android.R.id.home:
-                // 返回笔记列表活动
                 Intent intent = new Intent(this, NotesListActivity.class);
                 intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                 startActivity(intent);
@@ -430,4 +385,4 @@ public class NotesPreferenceActivity extends PreferenceActivity {
                 return false;
         }
     }
-}
+}

java/net/micode/notes/widget/NoteWidgetProvider.java

@@ -5,7 +5,7 @@
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- *        <url id="d0s4va13om1vt58e9vr0" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url> 
+ *        http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -15,7 +15,6 @@
  */
 
 package net.micode.notes.widget;
-
 import android.app.PendingIntent;
 import android.appwidget.AppWidgetManager;
 import android.appwidget.AppWidgetProvider;
@@ -34,34 +33,30 @@ import net.micode.notes.ui.NoteEditActivity;
 import net.micode.notes.ui.NotesListActivity;
 
 public abstract class NoteWidgetProvider extends AppWidgetProvider {
-    // 定义查询投影，指定要查询的列
-    public static final String[] PROJECTION = new String[] {
-        NoteColumns.ID, // 笔记 ID
-        NoteColumns.BG_COLOR_ID, // 背景颜色 ID
-        NoteColumns.SNIPPET // 摘要
+    public static final String [] PROJECTION = new String [] {
+        NoteColumns.ID,
+        NoteColumns.BG_COLOR_ID,
+        NoteColumns.SNIPPET
     };
 
-    // 定义各列在查询结果中的索引
-    public static final int COLUMN_ID = 0;
-    public static final int COLUMN_BG_COLOR_ID = 1;
-    public static final int COLUMN_SNIPPET = 2;
+    public static final int COLUMN_ID           = 0;
+    public static final int COLUMN_BG_COLOR_ID  = 1;
+    public static final int COLUMN_SNIPPET      = 2;
 
-    private static final String TAG = "NoteWidgetProvider"; // 日志标签
+    private static final String TAG = "NoteWidgetProvider";
 
     @Override
     public void onDeleted(Context context, int[] appWidgetIds) {
-        // 当小部件被删除时，更新数据库中的相关记录
         ContentValues values = new ContentValues();
         values.put(NoteColumns.WIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
         for (int i = 0; i < appWidgetIds.length; i++) {
             context.getContentResolver().update(Notes.CONTENT_NOTE_URI,
                     values,
                     NoteColumns.WIDGET_ID + "=?",
-                    new String[] { String.valueOf(appWidgetIds[i]) });
+                    new String[] { String.valueOf(appWidgetIds[i])});
         }
     }
 
-    // 获取与小部件相关的笔记信息
     private Cursor getNoteWidgetInfo(Context context, int widgetId) {
         return context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
                 PROJECTION,
@@ -70,19 +65,17 @@ public abstract class NoteWidgetProvider extends AppWidgetProvider {
                 null);
     }
 
-    // 更新小部件
     protected void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
         update(context, appWidgetManager, appWidgetIds, false);
     }
 
-    // 更新小部件，支持隐私模式
     private void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds,
             boolean privacyMode) {
         for (int i = 0; i < appWidgetIds.length; i++) {
             if (appWidgetIds[i] != AppWidgetManager.INVALID_APPWIDGET_ID) {
-                int bgId = ResourceParser.getDefaultBgId(context); // 获取默认背景颜色 ID
-                String snippet = ""; // 笔记摘要
-                Intent intent = new Intent(context, NoteEditActivity.class); // 创建编辑笔记的意图
+                int bgId = ResourceParser.getDefaultBgId(context);
+                String snippet = "";
+                Intent intent = new Intent(context, NoteEditActivity.class);
                 intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
                 intent.putExtra(Notes.INTENT_EXTRA_WIDGET_ID, appWidgetIds[i]);
                 intent.putExtra(Notes.INTENT_EXTRA_WIDGET_TYPE, getWidgetType());
@@ -94,8 +87,8 @@ public abstract class NoteWidgetProvider extends AppWidgetProvider {
                         c.close();
                         return;
                     }
-                    snippet = c.getString(COLUMN_SNIPPET); // 获取笔记摘要
-                    bgId = c.getInt(COLUMN_BG_COLOR_ID); // 获取背景颜色 ID
+                    snippet = c.getString(COLUMN_SNIPPET);
+                    bgId = c.getInt(COLUMN_BG_COLOR_ID);
                     intent.putExtra(Intent.EXTRA_UID, c.getLong(COLUMN_ID));
                     intent.setAction(Intent.ACTION_VIEW);
                 } else {
@@ -107,31 +100,33 @@ public abstract class NoteWidgetProvider extends AppWidgetProvider {
                     c.close();
                 }
 
-                RemoteViews rv = new RemoteViews(context.getPackageName(), getLayoutId()); // 创建远程视图
-                rv.setImageViewResource(R.id.widget_bg_image, getBgResourceId(bgId)); // 设置背景颜色资源
-
-                // 创建点击事件的待处理意图
+                RemoteViews rv = new RemoteViews(context.getPackageName(), getLayoutId());
+                rv.setImageViewResource(R.id.widget_bg_image, getBgResourceId(bgId));
+                intent.putExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, bgId);
+                /**
+                 * Generate the pending intent to start host for the widget
+                 */
                 PendingIntent pendingIntent = null;
                 if (privacyMode) {
-                    rv.setTextViewText(R.id.widget_text, context.getString(R.string.widget_under_visit_mode)); // 设置隐私模式下的文本
-                    pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], new Intent(context, NotesListActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
+                    rv.setTextViewText(R.id.widget_text,
+                            context.getString(R.string.widget_under_visit_mode));
+                    pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], new Intent(
+                            context, NotesListActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
                 } else {
-                    rv.setTextViewText(R.id.widget_text, snippet); // 设置笔记摘要文本
-                    pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], intent, PendingIntent.FLAG_UPDATE_CURRENT);
+                    rv.setTextViewText(R.id.widget_text, snippet);
+                    pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], intent,
+                            PendingIntent.FLAG_UPDATE_CURRENT);
                 }
 
-                rv.setOnClickPendingIntent(R.id.widget_text, pendingIntent); // 设置点击事件的待处理意图
-                appWidgetManager.updateAppWidget(appWidgetIds[i], rv); // 更新小部件
+                rv.setOnClickPendingIntent(R.id.widget_text, pendingIntent);
+                appWidgetManager.updateAppWidget(appWidgetIds[i], rv);
             }
         }
     }
 
-    // 获取背景颜色资源 ID，由子类实现
     protected abstract int getBgResourceId(int bgId);
 
-    // 获取布局 ID，由子类实现
     protected abstract int getLayoutId();
 
-    // 获取小部件类型，由子类实现
     protected abstract int getWidgetType();
-}
+}

java/net/micode/notes/widget/NoteWidgetProvider_2x.java

@@ -5,7 +5,7 @@
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- *        <url id="d0s510qj4egu9ar0mmmg" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url> 
+ *        http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -25,27 +25,23 @@ import net.micode.notes.tool.ResourceParser;
 
 
 public class NoteWidgetProvider_2x extends NoteWidgetProvider {
-    // 当小部件更新时调用
     @Override
     public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
-        super.update(context, appWidgetManager, appWidgetIds); // 调用基类的更新方法
+        super.update(context, appWidgetManager, appWidgetIds);
     }
 
-    // 获取小部件的布局资源 ID
     @Override
     protected int getLayoutId() {
-        return R.layout.widget_2x; // 返回 2x2 小部件的布局资源 ID
+        return R.layout.widget_2x;
     }
 
-    // 获取背景颜色资源 ID
     @Override
     protected int getBgResourceId(int bgId) {
-        return ResourceParser.WidgetBgResources.getWidget2xBgResource(bgId); // 获取 2x2 小部件的背景颜色资源 ID
+        return ResourceParser.WidgetBgResources.getWidget2xBgResource(bgId);
     }
 
-    // 获取小部件类型
     @Override
     protected int getWidgetType() {
-        return Notes.TYPE_WIDGET_2X; // 返回 2x2 小部件的类型
+        return Notes.TYPE_WIDGET_2X;
     }
-}
+}

java/net/micode/notes/widget/NoteWidgetProvider_4x.java

@@ -5,7 +5,7 @@
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- *        <url id="d0s5240u8ld6ib5i11c0" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url> 
+ *        http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -25,27 +25,22 @@ import net.micode.notes.tool.ResourceParser;
 
 
 public class NoteWidgetProvider_4x extends NoteWidgetProvider {
-    // 当小部件更新时调用
     @Override
     public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
-        super.update(context, appWidgetManager, appWidgetIds); // 调用基类的更新方法
+        super.update(context, appWidgetManager, appWidgetIds);
     }
 
-    // 获取小部件的布局资源 ID
-    @Override
     protected int getLayoutId() {
-        return R.layout.widget_4x; // 返回 4x4 小部件的布局资源 ID
+        return R.layout.widget_4x;
     }
 
-    // 获取背景颜色资源 ID
     @Override
     protected int getBgResourceId(int bgId) {
-        return ResourceParser.WidgetBgResources.getWidget4xBgResource(bgId); // 获取 4x4 小部件的背景颜色资源 ID
+        return ResourceParser.WidgetBgResources.getWidget4xBgResource(bgId);
     }
 
-    // 获取小部件类型
     @Override
     protected int getWidgetType() {
-        return Notes.TYPE_WIDGET_4X; // 返回 4x4 小部件的类型
+        return Notes.TYPE_WIDGET_4X;
     }
-}
+}

src/main/java/net/micode/notes/gtask/data/MetaData.java

@@ -24,37 +24,64 @@ import net.micode.notes.tool.GTaskStringUtils;
 import org.json.JSONException;
 import org.json.JSONObject;
 
-
+/**
+ * 元数据管理类，用于处理与Google Task同步相关的元数据信息
+ * 继承自Task类，主要管理关联任务ID和元数据的存储与解析
+ */
 public class MetaData extends Task {
+    // 日志标签
     private final static String TAG = MetaData.class.getSimpleName();
 
+    // 关联的Google Task服务器ID
     private String mRelatedGid = null;
 
+    /**
+     * 设置元数据信息
+     * @param gid 关联的Google Task服务器ID
+     * @param metaInfo 需要存储的元数据JSON对象
+     * 将gid存入metaInfo后，序列化为字符串存储到notes字段
+     * 并设置固定名称标识为元数据笔记
+     */
     public void setMeta(String gid, JSONObject metaInfo) {
         try {
+            // 将关联的GTask ID注入元数据头部
             metaInfo.put(GTaskStringUtils.META_HEAD_GTASK_ID, gid);
         } catch (JSONException e) {
             Log.e(TAG, "failed to put related gid");
         }
+        // 序列化元数据到笔记内容字段
         setNotes(metaInfo.toString());
+        // 设置固定名称标识为元数据笔记
         setName(GTaskStringUtils.META_NOTE_NAME);
     }
 
+    /**
+     * 获取关联的GTask ID
+     */
     public String getRelatedGid() {
         return mRelatedGid;
     }
 
+    /**
+     * 判断是否需要保存（当notes字段有内容时需保存）
+     */
     @Override
     public boolean isWorthSaving() {
         return getNotes() != null;
     }
 
+    /**
+     * 通过远程JSON数据设置内容
+     * 解析notes字段中的元数据并提取关联的GTask ID
+     */
     @Override
     public void setContentByRemoteJSON(JSONObject js) {
         super.setContentByRemoteJSON(js);
         if (getNotes() != null) {
             try {
+                // 反序列化notes字段内容
                 JSONObject metaInfo = new JSONObject(getNotes().trim());
+                // 提取关联的GTask ID
                 mRelatedGid = metaInfo.getString(GTaskStringUtils.META_HEAD_GTASK_ID);
             } catch (JSONException e) {
                 Log.w(TAG, "failed to get related gid");
@@ -63,20 +90,32 @@ public class MetaData extends Task {
         }
     }
 
+    // 以下方法在元数据管理中不应被调用，直接抛出异常
+
+    /**
+     * 元数据不应通过本地JSON设置内容
+     * @throws IllegalAccessError 始终抛出，标识非法调用
+     */
     @Override
     public void setContentByLocalJSON(JSONObject js) {
-        // this function should not be called
         throw new IllegalAccessError("MetaData:setContentByLocalJSON should not be called");
     }
 
+    /**
+     * 元数据不需要生成本地JSON内容
+     * @throws IllegalAccessError 始终抛出，标识非法调用
+     */
     @Override
     public JSONObject getLocalJSONFromContent() {
         throw new IllegalAccessError("MetaData:getLocalJSONFromContent should not be called");
     }
 
+    /**
+     * 元数据不处理本地数据库同步操作
+     * @throws IllegalAccessError 始终抛出，标识非法调用
+     */
     @Override
     public int getSyncAction(Cursor c) {
         throw new IllegalAccessError("MetaData:getSyncAction should not be called");
     }
-
-}
+}

src/main/java/net/micode/notes/gtask/data/Node.java

@@ -17,36 +17,48 @@
 package net.micode.notes.gtask.data;
 
 import android.database.Cursor;
-
 import org.json.JSONObject;
 
+/**
+ * 抽象节点基类，定义同步任务数据节点的通用属性和行为
+ * 作为所有同步实体（如笔记、任务、子任务等）的父类
+ * 包含同步动作类型定义和基础数据字段管理
+ */
 public abstract class Node {
+    // 同步动作类型常量
+    /** 无需同步操作 */
     public static final int SYNC_ACTION_NONE = 0;
-
+    /** 需要在远程服务器创建新条目 */
     public static final int SYNC_ACTION_ADD_REMOTE = 1;
-
+    /** 需要在本地数据库创建新条目 */
     public static final int SYNC_ACTION_ADD_LOCAL = 2;
-
+    /** 需要删除远程服务器条目 */
     public static final int SYNC_ACTION_DEL_REMOTE = 3;
-
+    /** 需要删除本地数据库条目 */
     public static final int SYNC_ACTION_DEL_LOCAL = 4;
-
+    /** 需要更新远程服务器条目 */
     public static final int SYNC_ACTION_UPDATE_REMOTE = 5;
-
+    /** 需要更新本地数据库条目 */
     public static final int SYNC_ACTION_UPDATE_LOCAL = 6;
-
+    /** 检测到数据冲突需要处理 */
     public static final int SYNC_ACTION_UPDATE_CONFLICT = 7;
-
+    /** 同步过程发生错误 */
     public static final int SYNC_ACTION_ERROR = 8;
 
+    // 节点基础属性
+    /** Google Task服务器分配的唯一标识符 */
     private String mGid;
-
+    /** 节点显示名称 */
     private String mName;
-
+    /** 最后修改时间戳（毫秒级） */
     private long mLastModified;
-
+    /** 删除标记（逻辑删除） */
     private boolean mDeleted;
 
+    /**
+     * 节点构造函数
+     * 初始化默认值：gid=null, 名称为空字符串，最后修改时间为0，未删除状态
+     */
     public Node() {
         mGid = null;
         mName = "";
@@ -54,48 +66,86 @@ public abstract class Node {
         mDeleted = false;
     }
 
+    // 抽象方法定义（需子类实现）
+
+    /**
+     * 生成创建动作的JSON数据包
+     * @param actionId 动作标识符（用于保证操作序列）
+     * @return 包含创建指令的JSON对象
+     */
     public abstract JSONObject getCreateAction(int actionId);
 
+    /**
+     * 生成更新动作的JSON数据包
+     * @param actionId 动作标识符
+     * @return 包含更新指令的JSON对象
+     */
     public abstract JSONObject getUpdateAction(int actionId);
 
+    /**
+     * 通过远程JSON数据设置节点内容
+     * @param js 来自服务器的JSON数据包
+     */
     public abstract void setContentByRemoteJSON(JSONObject js);
 
+    /**
+     * 通过本地JSON数据设置节点内容
+     * @param js 来自本地数据库的JSON数据
+     */
     public abstract void setContentByLocalJSON(JSONObject js);
 
+    /**
+     * 从节点内容生成本地JSON数据
+     * @return 可用于本地存储的JSON对象
+     */
     public abstract JSONObject getLocalJSONFromContent();
 
+    /**
+     * 根据数据库游标确定同步动作类型
+     * @param c 数据库查询结果游标
+     * @return 需要执行的同步动作类型（参考SYNC_ACTION常量）
+     */
     public abstract int getSyncAction(Cursor c);
 
+    // 属性访问方法
+
+    /** 设置Google Task服务器ID */
     public void setGid(String gid) {
         this.mGid = gid;
     }
 
+    /** 设置节点名称 */
     public void setName(String name) {
         this.mName = name;
     }
 
+    /** 设置最后修改时间戳 */
     public void setLastModified(long lastModified) {
         this.mLastModified = lastModified;
     }
 
+    /** 设置删除标记 */
     public void setDeleted(boolean deleted) {
         this.mDeleted = deleted;
     }
 
+    /** 获取Google Task服务器ID */
     public String getGid() {
         return this.mGid;
     }
 
+    /** 获取节点名称 */
     public String getName() {
         return this.mName;
     }
 
+    /** 获取最后修改时间戳 */
     public long getLastModified() {
         return this.mLastModified;
     }
 
+    /** 获取删除状态 */
     public boolean getDeleted() {
         return this.mDeleted;
     }
-
-}
+}

src/main/java/net/micode/notes/gtask/data/SqlData.java

@@ -34,54 +34,65 @@ import net.micode.notes.gtask.exception.ActionFailureException;
 import org.json.JSONException;
 import org.json.JSONObject;
 
-
+/**
+ * 数据库数据操作封装类
+ * 负责处理与便笺数据表（Data表）的CRUD操作
+ * 封装数据字段的差异更新逻辑，支持事务性提交
+ */
 public class SqlData {
+    // 日志标签
     private static final String TAG = SqlData.class.getSimpleName();
 
+    // 无效ID标识（用于新建条目）
     private static final int INVALID_ID = -99999;
 
+    // 数据表查询字段投影（对应DATA表的列）
     public static final String[] PROJECTION_DATA = new String[] {
-            DataColumns.ID, DataColumns.MIME_TYPE, DataColumns.CONTENT, DataColumns.DATA1,
-            DataColumns.DATA3
+            DataColumns.ID,           // 0:数据ID
+            DataColumns.MIME_TYPE,    // 1:MIME类型
+            DataColumns.CONTENT,      // 2:内容主体（JSON格式）
+            DataColumns.DATA1,        // 3:扩展数据1（长整型）
+            DataColumns.DATA3        // 4:扩展数据3（字符串）
     };
 
+    // 投影字段索引常量
     public static final int DATA_ID_COLUMN = 0;
-
     public static final int DATA_MIME_TYPE_COLUMN = 1;
-
     public static final int DATA_CONTENT_COLUMN = 2;
-
     public static final int DATA_CONTENT_DATA_1_COLUMN = 3;
-
     public static final int DATA_CONTENT_DATA_3_COLUMN = 4;
 
-    private ContentResolver mContentResolver;
-
-    private boolean mIsCreate;
-
-    private long mDataId;
-
-    private String mDataMimeType;
-
-    private String mDataContent;
-
-    private long mDataContentData1;
-
-    private String mDataContentData3;
-
-    private ContentValues mDiffDataValues;
-
+    // 成员变量
+    private ContentResolver mContentResolver; // 内容解析器（用于数据库操作）
+    private boolean mIsCreate;                // 新建数据条目标识
+    private long mDataId;                     // 当前数据ID
+    private String mDataMimeType;             // MIME类型（默认NOTE类型）
+    private String mDataContent;              // 内容主体
+    private long mDataContentData1;           // 扩展数据1（长整型字段）
+    private String mDataContentData3;         // 扩展数据3（字符串字段）
+    private ContentValues mDiffDataValues;    // 差异字段集合（用于批量更新）
+
+    /**
+     * 新建数据构造函数
+     * @param context 上下文对象（用于获取ContentResolver）
+     */
     public SqlData(Context context) {
         mContentResolver = context.getContentResolver();
         mIsCreate = true;
+        // 初始化默认值
         mDataId = INVALID_ID;
-        mDataMimeType = DataConstants.NOTE;
+        mDataMimeType = DataConstants.NOTE; // 默认MIME类型为便笺
         mDataContent = "";
         mDataContentData1 = 0;
         mDataContentData3 = "";
         mDiffDataValues = new ContentValues();
     }
 
+    /**
+     * 从数据库游标构造（用于加载已有数据）
+     * @param context 上下文对象
+     * @param c 数据库查询结果游标
+     */
     public SqlData(Context context, Cursor c) {
         mContentResolver = context.getContentResolver();
         mIsCreate = false;
@@ -89,6 +100,10 @@ public class SqlData {
         mDiffDataValues = new ContentValues();
     }
 
+    /**
+     * 从游标加载数据到成员变量
+     * @param c 已定位到正确位置的数据库游标
+     */
     private void loadFromCursor(Cursor c) {
         mDataId = c.getLong(DATA_ID_COLUMN);
         mDataMimeType = c.getString(DATA_MIME_TYPE_COLUMN);
@@ -97,13 +112,21 @@ public class SqlData {
         mDataContentData3 = c.getString(DATA_CONTENT_DATA_3_COLUMN);
     }
 
+    /**
+     * 通过JSON对象设置数据内容
+     * @param js 包含数据字段的JSON对象
+     * @throws JSONException JSON解析异常
+     * 说明：自动记录变化的字段，用于后续差异更新
+     */
     public void setContent(JSONObject js) throws JSONException {
+        // 处理数据ID字段
         long dataId = js.has(DataColumns.ID) ? js.getLong(DataColumns.ID) : INVALID_ID;
         if (mIsCreate || mDataId != dataId) {
             mDiffDataValues.put(DataColumns.ID, dataId);
         }
         mDataId = dataId;
 
+        // 处理MIME类型字段
         String dataMimeType = js.has(DataColumns.MIME_TYPE) ? js.getString(DataColumns.MIME_TYPE)
                 : DataConstants.NOTE;
         if (mIsCreate || !mDataMimeType.equals(dataMimeType)) {
@@ -111,18 +134,21 @@ public class SqlData {
         }
         mDataMimeType = dataMimeType;
 
+        // 处理内容主体字段
         String dataContent = js.has(DataColumns.CONTENT) ? js.getString(DataColumns.CONTENT) : "";
         if (mIsCreate || !mDataContent.equals(dataContent)) {
             mDiffDataValues.put(DataColumns.CONTENT, dataContent);
         }
         mDataContent = dataContent;
 
+        // 处理扩展数据1（长整型）
         long dataContentData1 = js.has(DataColumns.DATA1) ? js.getLong(DataColumns.DATA1) : 0;
         if (mIsCreate || mDataContentData1 != dataContentData1) {
             mDiffDataValues.put(DataColumns.DATA1, dataContentData1);
         }
         mDataContentData1 = dataContentData1;
 
+        // 处理扩展数据3（字符串）
         String dataContentData3 = js.has(DataColumns.DATA3) ? js.getString(DataColumns.DATA3) : "";
         if (mIsCreate || !mDataContentData3.equals(dataContentData3)) {
             mDiffDataValues.put(DataColumns.DATA3, dataContentData3);
@@ -130,6 +156,12 @@ public class SqlData {
         mDataContentData3 = dataContentData3;
     }
 
+    /**
+     * 获取当前数据的JSON表示
+     * @return 包含所有数据字段的JSON对象
+     * @throws JSONException JSON构造异常
+     * 注意：新建对象（未提交）调用此方法将返回null
+     */
     public JSONObject getContent() throws JSONException {
         if (mIsCreate) {
             Log.e(TAG, "it seems that we haven't created this in database yet");
@@ -144,34 +176,59 @@ public class SqlData {
         return js;
     }
 
+    /**
+     * 提交数据变更到数据库
+     * @param noteId 关联的便笺ID
+     * @param validateVersion 是否进行版本验证
+     * @param version 当前数据版本（用于乐观锁）
+     * @throws ActionFailureException 数据库操作失败时抛出
+     *
+     * 执行逻辑：
+     * 1. 新建模式：插入新记录并获取分配的ID
+     * 2. 更新模式：根据差异字段进行更新
+     *    - 带版本验证的更新可防止同步冲突
+     */
     public void commit(long noteId, boolean validateVersion, long version) {
-
         if (mIsCreate) {
+            // 新建数据处理
             if (mDataId == INVALID_ID && mDiffDataValues.containsKey(DataColumns.ID)) {
-                mDiffDataValues.remove(DataColumns.ID);
+                mDiffDataValues.remove(DataColumns.ID); // 移除无效ID
             }
 
+            // 添加关联便笺ID
             mDiffDataValues.put(DataColumns.NOTE_ID, noteId);
+
+            // 执行插入操作
             Uri uri = mContentResolver.insert(Notes.CONTENT_DATA_URI, mDiffDataValues);
             try {
+                // 从返回URI中解析新分配的ID
                 mDataId = Long.valueOf(uri.getPathSegments().get(1));
             } catch (NumberFormatException e) {
                 Log.e(TAG, "Get note id error :" + e.toString());
                 throw new ActionFailureException("create note failed");
             }
         } else {
+            // 更新数据处理
             if (mDiffDataValues.size() > 0) {
                 int result = 0;
                 if (!validateVersion) {
-                    result = mContentResolver.update(ContentUris.withAppendedId(
-                            Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues, null, null);
+                    // 普通更新
+                    result = mContentResolver.update(
+                            ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, mDataId),
+                            mDiffDataValues,
+                            null,
+                            null
+                    );
                 } else {
-                    result = mContentResolver.update(ContentUris.withAppendedId(
-                            Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues,
+                    // 带版本验证的更新（防止同步冲突）
+                    result = mContentResolver.update(
+                            ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, mDataId),
+                            mDiffDataValues,
+                            // 使用子查询确保版本匹配
                             " ? in (SELECT " + NoteColumns.ID + " FROM " + TABLE.NOTE
-                                    + " WHERE " + NoteColumns.VERSION + "=?)", new String[] {
-                                    String.valueOf(noteId), String.valueOf(version)
-                            });
+                                    + " WHERE " + NoteColumns.VERSION + "=?)",
+                            new String[] { String.valueOf(noteId), String.valueOf(version) }
+                    );
                 }
                 if (result == 0) {
                     Log.w(TAG, "there is no update. maybe user updates note when syncing");
@@ -179,10 +236,15 @@ public class SqlData {
             }
         }
 
+        // 重置状态
         mDiffDataValues.clear();
         mIsCreate = false;
     }
 
+    /**
+     * 获取当前数据ID
+     * @return 有效数据ID，新建对象提交前返回INVALID_ID
+     */
     public long getId() {
         return mDataId;
     }

src/main/java/net/micode/notes/gtask/data/SqlNote.java

@@ -37,12 +37,15 @@ import org.json.JSONObject;
 
 import java.util.ArrayList;
 
-
+// SqlNote类用于处理便签数据的存储和操作，包括数据的加载、设置、获取和提交等操作。
 public class SqlNote {
+    // 日志标签，用于调试和日志记录
     private static final String TAG = SqlNote.class.getSimpleName();
 
+    // 无效ID的常量值
     private static final int INVALID_ID = -99999;
 
+    // 定义查询便签时需要的列
     public static final String[] PROJECTION_NOTE = new String[] {
             NoteColumns.ID, NoteColumns.ALERTED_DATE, NoteColumns.BG_COLOR_ID,
             NoteColumns.CREATED_DATE, NoteColumns.HAS_ATTACHMENT, NoteColumns.MODIFIED_DATE,
@@ -52,76 +55,80 @@ public class SqlNote {
             NoteColumns.VERSION
     };
 
+    // 定义PROJECTION_NOTE中各列的索引
     public static final int ID_COLUMN = 0;
-
     public static final int ALERTED_DATE_COLUMN = 1;
-
     public static final int BG_COLOR_ID_COLUMN = 2;
-
     public static final int CREATED_DATE_COLUMN = 3;
-
     public static final int HAS_ATTACHMENT_COLUMN = 4;
-
     public static final int MODIFIED_DATE_COLUMN = 5;
-
     public static final int NOTES_COUNT_COLUMN = 6;
-
     public static final int PARENT_ID_COLUMN = 7;
-
     public static final int SNIPPET_COLUMN = 8;
-
     public static final int TYPE_COLUMN = 9;
-
     public static final int WIDGET_ID_COLUMN = 10;
-
     public static final int WIDGET_TYPE_COLUMN = 11;
-
     public static final int SYNC_ID_COLUMN = 12;
-
     public static final int LOCAL_MODIFIED_COLUMN = 13;
-
     public static final int ORIGIN_PARENT_ID_COLUMN = 14;
-
     public static final int GTASK_ID_COLUMN = 15;
-
     public static final int VERSION_COLUMN = 16;
 
+    // 上下文环境，用于访问应用程序资源和数据库
     private Context mContext;
 
+    // 内容解析器，用于与内容提供器进行交互
     private ContentResolver mContentResolver;
 
+    // 标志位，表示该便签是否是新创建的
     private boolean mIsCreate;
 
+    // 便签的唯一标识符
     private long mId;
 
+    // 便签的提醒日期
     private long mAlertDate;
 
+    // 便签的背景颜色标识符
     private int mBgColorId;
 
+    // 便签的创建日期
     private long mCreatedDate;
 
+    // 标志位，表示便签是否包含附件
     private int mHasAttachment;
 
+    // 便签的最后修改日期
     private long mModifiedDate;
 
+    // 便签的父便签标识符
     private long mParentId;
 
+    // 便签的简短摘要或标题
     private String mSnippet;
 
+    // 便签的类型（如普通便签、文件夹、系统文件夹等）
     private int mType;
 
+    // 与便签关联的小部件标识符
     private int mWidgetId;
 
+    // 便签的小部件类型
     private int mWidgetType;
 
+    // 便签的原始父便签标识符
     private long mOriginParent;
 
+    // 便签的版本号，用于数据同步和冲突检测
     private long mVersion;
 
+    // 用于存储便签属性的更改，以便后续提交到数据库
     private ContentValues mDiffNoteValues;
 
+    // 存储与便签相关的数据内容列表
     private ArrayList<SqlData> mDataList;
 
+    // 构造方法，创建一个新的SqlNote对象，初始化成员变量，并设置默认值
     public SqlNote(Context context) {
         mContext = context;
         mContentResolver = context.getContentResolver();
@@ -143,6 +150,7 @@ public class SqlNote {
         mDataList = new ArrayList<SqlData>();
     }
 
+    // 构造方法，从数据库游标中加载便签数据，初始化SqlNote对象
     public SqlNote(Context context, Cursor c) {
         mContext = context;
         mContentResolver = context.getContentResolver();
@@ -154,6 +162,7 @@ public class SqlNote {
         mDiffNoteValues = new ContentValues();
     }
 
+    // 构造方法，根据便签ID从数据库中加载便签数据，初始化SqlNote对象
     public SqlNote(Context context, long id) {
         mContext = context;
         mContentResolver = context.getContentResolver();
@@ -163,15 +172,15 @@ public class SqlNote {
         if (mType == Notes.TYPE_NOTE)
             loadDataContent();
         mDiffNoteValues = new ContentValues();
-
     }
 
+    // 根据便签ID从数据库中查询便签数据，并加载到当前对象中
     private void loadFromCursor(long id) {
         Cursor c = null;
         try {
             c = mContentResolver.query(Notes.CONTENT_NOTE_URI, PROJECTION_NOTE, "(_id=?)",
                     new String[] {
-                        String.valueOf(id)
+                            String.valueOf(id)
                     }, null);
             if (c != null) {
                 c.moveToNext();
@@ -185,6 +194,7 @@ public class SqlNote {
         }
     }
 
+    // 从数据库游标中加载便签数据到当前对象中
     private void loadFromCursor(Cursor c) {
         mId = c.getLong(ID_COLUMN);
         mAlertDate = c.getLong(ALERTED_DATE_COLUMN);
@@ -200,13 +210,14 @@ public class SqlNote {
         mVersion = c.getLong(VERSION_COLUMN);
     }
 
+    // 加载与当前便签相关的数据内容
     private void loadDataContent() {
         Cursor c = null;
         mDataList.clear();
         try {
             c = mContentResolver.query(Notes.CONTENT_DATA_URI, SqlData.PROJECTION_DATA,
                     "(note_id=?)", new String[] {
-                        String.valueOf(mId)
+                            String.valueOf(mId)
                     }, null);
             if (c != null) {
                 if (c.getCount() == 0) {
@@ -226,13 +237,14 @@ public class SqlNote {
         }
     }
 
+    // 从JSON对象中设置便签的内容和属性
     public boolean setContent(JSONObject js) {
         try {
             JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
             if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_SYSTEM) {
                 Log.w(TAG, "cannot set system folder");
             } else if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_FOLDER) {
-                // for folder we can only update the snnipet and type
+                // 对于文件夹，我们只能更新摘要和类型
                 String snippet = note.has(NoteColumns.SNIPPET) ? note
                         .getString(NoteColumns.SNIPPET) : "";
                 if (mIsCreate || !mSnippet.equals(snippet)) {
@@ -248,7 +260,8 @@ public class SqlNote {
                 mType = type;
             } else if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_NOTE) {
                 JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
-                long id = note.has(NoteColumns.ID) ? note.getLong(NoteColumns.ID) : INVALID_ID;
+                long id = note.has(NoteColumns.ID) ? note
+                        .getLong(NoteColumns.ID) : INVALID_ID;
                 if (mIsCreate || mId != id) {
                     mDiffNoteValues.put(NoteColumns.ID, id);
                 }
@@ -359,6 +372,7 @@ public class SqlNote {
         return true;
     }
 
+    // 将便签的内容和属性转换为JSON对象
     public JSONObject getContent() {
         try {
             JSONObject js = new JSONObject();
@@ -407,39 +421,48 @@ public class SqlNote {
         return null;
     }
 
+    // 设置便签的父便签标识符
     public void setParentId(long id) {
         mParentId = id;
         mDiffNoteValues.put(NoteColumns.PARENT_ID, id);
     }
 
+    // 设置便签的Gtask ID
     public void setGtaskId(String gid) {
         mDiffNoteValues.put(NoteColumns.GTASK_ID, gid);
     }
 
+    // 设置便签的同步ID
     public void setSyncId(long syncId) {
         mDiffNoteValues.put(NoteColumns.SYNC_ID, syncId);
     }
 
+    // 重置便签的本地修改标志
     public void resetLocalModified() {
         mDiffNoteValues.put(NoteColumns.LOCAL_MODIFIED, 0);
     }
 
+    // 获取便签的唯一标识符
     public long getId() {
         return mId;
     }
 
+    // 获取便签的父便签标识符
     public long getParentId() {
         return mParentId;
     }
 
+    // 获取便签的简短摘要或标题
     public String getSnippet() {
         return mSnippet;
     }
 
+    // 判断便签是否为普通便签类型
     public boolean isNoteType() {
         return mType == Notes.TYPE_NOTE;
     }
 
+    // 将便签的更改提交到数据库，包括插入新便签或更新现有便签，并处理数据同步和冲突检测
     public void commit(boolean validateVersion) {
         if (mIsCreate) {
             if (mId == INVALID_ID && mDiffNoteValues.containsKey(NoteColumns.ID)) {
@@ -468,16 +491,16 @@ public class SqlNote {
                 throw new IllegalStateException("Try to update note with invalid id");
             }
             if (mDiffNoteValues.size() > 0) {
-                mVersion ++;
+                mVersion++;
                 int result = 0;
                 if (!validateVersion) {
                     result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
                             + NoteColumns.ID + "=?)", new String[] {
-                        String.valueOf(mId)
+                            String.valueOf(mId)
                     });
                 } else {
                     result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
-                            + NoteColumns.ID + "=?) AND (" + NoteColumns.VERSION + "<=?)",
+                                    + NoteColumns.ID + "=?) AND (" + NoteColumns.VERSION + "<=?)",
                             new String[] {
                                     String.valueOf(mId), String.valueOf(mVersion)
                             });
@@ -494,7 +517,7 @@ public class SqlNote {
             }
         }
 
-        // refresh local info
+        // 刷新本地信息
         loadFromCursor(mId);
         if (mType == Notes.TYPE_NOTE)
             loadDataContent();
@@ -502,4 +525,4 @@ public class SqlNote {
         mDiffNoteValues.clear();
         mIsCreate = false;
     }
-}
+}

src/main/java/net/micode/notes/gtask/data/Task.java

@@ -31,20 +31,27 @@ import org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;
 
-
+// Task类继承自Node类，用于处理任务相关的操作，包括创建、更新、同步等
 public class Task extends Node {
+    // 日志标签，用于调试和日志记录
     private static final String TAG = Task.class.getSimpleName();
 
+    // 标志位，表示任务是否已完成
     private boolean mCompleted;
 
+    // 任务的备注信息
     private String mNotes;
 
+    // 任务的元数据信息
     private JSONObject mMetaInfo;
 
+    // 任务的前一个兄弟任务
     private Task mPriorSibling;
 
+    // 任务所属的任务列表
     private TaskList mParent;
 
+    // 构造方法，初始化任务对象
     public Task() {
         super();
         mCompleted = false;
@@ -54,21 +61,22 @@ public class Task extends Node {
         mMetaInfo = null;
     }
 
+    // 生成创建任务的JSON对象，用于与服务器交互
     public JSONObject getCreateAction(int actionId) {
         JSONObject js = new JSONObject();
 
         try {
-            // action_type
+            // 设置操作类型为创建
             js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
                     GTaskStringUtils.GTASK_JSON_ACTION_TYPE_CREATE);
 
-            // action_id
+            // 设置操作ID
             js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
 
-            // index
+            // 设置任务在父任务列表中的索引
             js.put(GTaskStringUtils.GTASK_JSON_INDEX, mParent.getChildTaskIndex(this));
 
-            // entity_delta
+            // 设置任务的基本信息
             JSONObject entity = new JSONObject();
             entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
             entity.put(GTaskStringUtils.GTASK_JSON_CREATOR_ID, "null");
@@ -79,17 +87,17 @@ public class Task extends Node {
             }
             js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
 
-            // parent_id
+            // 设置父任务列表的ID
             js.put(GTaskStringUtils.GTASK_JSON_PARENT_ID, mParent.getGid());
 
-            // dest_parent_type
+            // 设置目标父类型
             js.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT_TYPE,
                     GTaskStringUtils.GTASK_JSON_TYPE_GROUP);
 
-            // list_id
+            // 设置列表ID
             js.put(GTaskStringUtils.GTASK_JSON_LIST_ID, mParent.getGid());
 
-            // prior_sibling_id
+            // 设置前一个兄弟任务的ID（如果存在）
             if (mPriorSibling != null) {
                 js.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, mPriorSibling.getGid());
             }
@@ -103,21 +111,22 @@ public class Task extends Node {
         return js;
     }
 
+    // 生成更新任务的JSON对象，用于与服务器交互
     public JSONObject getUpdateAction(int actionId) {
         JSONObject js = new JSONObject();
 
         try {
-            // action_type
+            // 设置操作类型为更新
             js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
                     GTaskStringUtils.GTASK_JSON_ACTION_TYPE_UPDATE);
 
-            // action_id
+            // 设置操作ID
             js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
 
-            // id
+            // 设置任务ID
             js.put(GTaskStringUtils.GTASK_JSON_ID, getGid());
 
-            // entity_delta
+            // 设置任务的更新信息
             JSONObject entity = new JSONObject();
             entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
             if (getNotes() != null) {
@@ -135,35 +144,36 @@ public class Task extends Node {
         return js;
     }
 
+    // 从远程JSON对象中设置任务内容
     public void setContentByRemoteJSON(JSONObject js) {
         if (js != null) {
             try {
-                // id
+                // 设置任务ID
                 if (js.has(GTaskStringUtils.GTASK_JSON_ID)) {
                     setGid(js.getString(GTaskStringUtils.GTASK_JSON_ID));
                 }
 
-                // last_modified
+                // 设置最后修改时间
                 if (js.has(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED)) {
                     setLastModified(js.getLong(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED));
                 }
 
-                // name
+                // 设置任务名称
                 if (js.has(GTaskStringUtils.GTASK_JSON_NAME)) {
                     setName(js.getString(GTaskStringUtils.GTASK_JSON_NAME));
                 }
 
-                // notes
+                // 设置任务备注
                 if (js.has(GTaskStringUtils.GTASK_JSON_NOTES)) {
                     setNotes(js.getString(GTaskStringUtils.GTASK_JSON_NOTES));
                 }
 
-                // deleted
+                // 设置任务是否已删除
                 if (js.has(GTaskStringUtils.GTASK_JSON_DELETED)) {
                     setDeleted(js.getBoolean(GTaskStringUtils.GTASK_JSON_DELETED));
                 }
 
-                // completed
+                // 设置任务是否已完成
                 if (js.has(GTaskStringUtils.GTASK_JSON_COMPLETED)) {
                     setCompleted(js.getBoolean(GTaskStringUtils.GTASK_JSON_COMPLETED));
                 }
@@ -175,21 +185,25 @@ public class Task extends Node {
         }
     }
 
+    // 从本地JSON对象中设置任务内容
     public void setContentByLocalJSON(JSONObject js) {
         if (js == null || !js.has(GTaskStringUtils.META_HEAD_NOTE)
                 || !js.has(GTaskStringUtils.META_HEAD_DATA)) {
-            Log.w(TAG, "setContentByLocalJSON: nothing is avaiable");
+            Log.w(TAG, "setContentByLocalJSON: nothing is available");
         }
 
         try {
+            // 获取任务的元数据
             JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
             JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
 
+            // 检查任务类型是否为普通任务
             if (note.getInt(NoteColumns.TYPE) != Notes.TYPE_NOTE) {
                 Log.e(TAG, "invalid type");
                 return;
             }
 
+            // 设置任务内容
             for (int i = 0; i < dataArray.length(); i++) {
                 JSONObject data = dataArray.getJSONObject(i);
                 if (TextUtils.equals(data.getString(DataColumns.MIME_TYPE), DataConstants.NOTE)) {
@@ -204,16 +218,18 @@ public class Task extends Node {
         }
     }
 
+    // 从任务内容生成本地JSON对象
     public JSONObject getLocalJSONFromContent() {
         String name = getName();
         try {
             if (mMetaInfo == null) {
-                // new task created from web
+                // 新创建的任务
                 if (name == null) {
                     Log.w(TAG, "the note seems to be an empty one");
                     return null;
                 }
 
+                // 创建JSON对象
                 JSONObject js = new JSONObject();
                 JSONObject note = new JSONObject();
                 JSONArray dataArray = new JSONArray();
@@ -225,10 +241,11 @@ public class Task extends Node {
                 js.put(GTaskStringUtils.META_HEAD_NOTE, note);
                 return js;
             } else {
-                // synced task
+                // 已同步的任务
                 JSONObject note = mMetaInfo.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
                 JSONArray dataArray = mMetaInfo.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
 
+                // 更新任务内容
                 for (int i = 0; i < dataArray.length(); i++) {
                     JSONObject data = dataArray.getJSONObject(i);
                     if (TextUtils.equals(data.getString(DataColumns.MIME_TYPE), DataConstants.NOTE)) {
@@ -247,6 +264,7 @@ public class Task extends Node {
         }
     }
 
+    // 设置任务的元数据信息
     public void setMetaInfo(MetaData metaData) {
         if (metaData != null && metaData.getNotes() != null) {
             try {
@@ -258,6 +276,7 @@ public class Task extends Node {
         }
     }
 
+    // 根据游标数据确定同步操作类型
     public int getSyncAction(Cursor c) {
         try {
             JSONObject noteInfo = null;
@@ -275,31 +294,32 @@ public class Task extends Node {
                 return SYNC_ACTION_UPDATE_LOCAL;
             }
 
-            // validate the note id now
+            // 验证任务ID是否匹配
             if (c.getLong(SqlNote.ID_COLUMN) != noteInfo.getLong(NoteColumns.ID)) {
                 Log.w(TAG, "note id doesn't match");
                 return SYNC_ACTION_UPDATE_LOCAL;
             }
 
             if (c.getInt(SqlNote.LOCAL_MODIFIED_COLUMN) == 0) {
-                // there is no local update
+                // 本地没有修改
                 if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
-                    // no update both side
+                    // 两边都没有更新
                     return SYNC_ACTION_NONE;
                 } else {
-                    // apply remote to local
+                    // 应用远程到本地
                     return SYNC_ACTION_UPDATE_LOCAL;
                 }
             } else {
-                // validate gtask id
+                // 验证Gtask ID是否匹配
                 if (!c.getString(SqlNote.GTASK_ID_COLUMN).equals(getGid())) {
                     Log.e(TAG, "gtask id doesn't match");
                     return SYNC_ACTION_ERROR;
                 }
                 if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
-                    // local modification only
+                    // 只有本地修改
                     return SYNC_ACTION_UPDATE_REMOTE;
                 } else {
+                    // 同步冲突
                     return SYNC_ACTION_UPDATE_CONFLICT;
                 }
             }
@@ -311,41 +331,49 @@ public class Task extends Node {
         return SYNC_ACTION_ERROR;
     }
 
+    // 判断任务是否值得保存
     public boolean isWorthSaving() {
         return mMetaInfo != null || (getName() != null && getName().trim().length() > 0)
                 || (getNotes() != null && getNotes().trim().length() > 0);
     }
 
+    // 设置任务是否已完成
     public void setCompleted(boolean completed) {
         this.mCompleted = completed;
     }
 
+    // 设置任务备注
     public void setNotes(String notes) {
         this.mNotes = notes;
     }
 
+    // 设置任务的前一个兄弟任务
     public void setPriorSibling(Task priorSibling) {
         this.mPriorSibling = priorSibling;
     }
 
+    // 设置任务所属的任务列表
     public void setParent(TaskList parent) {
         this.mParent = parent;
     }
 
+    // 获取任务是否已完成
     public boolean getCompleted() {
         return this.mCompleted;
     }
 
+    // 获取任务备注
     public String getNotes() {
         return this.mNotes;
     }
 
+    // 获取任务的前一个兄弟任务
     public Task getPriorSibling() {
         return this.mPriorSibling;
     }
 
+    // 获取任务所属的任务列表
     public TaskList getParent() {
         return this.mParent;
     }
-
-}
+}

src/main/java/net/micode/notes/gtask/data/TaskList.java

@@ -29,35 +29,40 @@ import org.json.JSONObject;
 
 import java.util.ArrayList;
 
-
+// TaskList类继承自Node类，用于管理任务列表及其子任务
 public class TaskList extends Node {
+    // 日志标签，用于调试和日志记录
     private static final String TAG = TaskList.class.getSimpleName();
 
+    // 任务列表的索引
     private int mIndex;
 
+    // 子任务列表
     private ArrayList<Task> mChildren;
 
+    // 构造方法，初始化任务列表
     public TaskList() {
         super();
         mChildren = new ArrayList<Task>();
         mIndex = 1;
     }
 
+    // 生成创建任务列表的JSON对象，用于与服务器交互
     public JSONObject getCreateAction(int actionId) {
         JSONObject js = new JSONObject();
 
         try {
-            // action_type
+            // 设置操作类型为创建
             js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
                     GTaskStringUtils.GTASK_JSON_ACTION_TYPE_CREATE);
 
-            // action_id
+            // 设置操作ID
             js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
 
-            // index
+            // 设置任务列表的索引
             js.put(GTaskStringUtils.GTASK_JSON_INDEX, mIndex);
 
-            // entity_delta
+            // 设置任务列表的基本信息
             JSONObject entity = new JSONObject();
             entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
             entity.put(GTaskStringUtils.GTASK_JSON_CREATOR_ID, "null");
@@ -74,21 +79,22 @@ public class TaskList extends Node {
         return js;
     }
 
+    // 生成更新任务列表的JSON对象，用于与服务器交互
     public JSONObject getUpdateAction(int actionId) {
         JSONObject js = new JSONObject();
 
         try {
-            // action_type
+            // 设置操作类型为更新
             js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
                     GTaskStringUtils.GTASK_JSON_ACTION_TYPE_UPDATE);
 
-            // action_id
+            // 设置操作ID
             js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
 
-            // id
+            // 设置任务列表ID
             js.put(GTaskStringUtils.GTASK_JSON_ID, getGid());
 
-            // entity_delta
+            // 设置任务列表的更新信息
             JSONObject entity = new JSONObject();
             entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
             entity.put(GTaskStringUtils.GTASK_JSON_DELETED, getDeleted());
@@ -103,20 +109,21 @@ public class TaskList extends Node {
         return js;
     }
 
+    // 从远程JSON对象中设置任务列表内容
     public void setContentByRemoteJSON(JSONObject js) {
         if (js != null) {
             try {
-                // id
+                // 设置任务列表ID
                 if (js.has(GTaskStringUtils.GTASK_JSON_ID)) {
                     setGid(js.getString(GTaskStringUtils.GTASK_JSON_ID));
                 }
 
-                // last_modified
+                // 设置最后修改时间
                 if (js.has(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED)) {
                     setLastModified(js.getLong(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED));
                 }
 
-                // name
+                // 设置任务列表名称
                 if (js.has(GTaskStringUtils.GTASK_JSON_NAME)) {
                     setName(js.getString(GTaskStringUtils.GTASK_JSON_NAME));
                 }
@@ -129,14 +136,17 @@ public class TaskList extends Node {
         }
     }
 
+    // 从本地JSON对象中设置任务列表内容
     public void setContentByLocalJSON(JSONObject js) {
         if (js == null || !js.has(GTaskStringUtils.META_HEAD_NOTE)) {
-            Log.w(TAG, "setContentByLocalJSON: nothing is avaiable");
+            Log.w(TAG, "setContentByLocalJSON: nothing is available");
         }
 
         try {
+            // 获取任务列表的元数据
             JSONObject folder = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
 
+            // 根据任务列表类型设置名称
             if (folder.getInt(NoteColumns.TYPE) == Notes.TYPE_FOLDER) {
                 String name = folder.getString(NoteColumns.SNIPPET);
                 setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX + name);
@@ -157,11 +167,13 @@ public class TaskList extends Node {
         }
     }
 
+    // 从任务列表内容生成本地JSON对象
     public JSONObject getLocalJSONFromContent() {
         try {
             JSONObject js = new JSONObject();
             JSONObject folder = new JSONObject();
 
+            // 获取任务列表名称
             String folderName = getName();
             if (getName().startsWith(GTaskStringUtils.MIUI_FOLDER_PREFFIX))
                 folderName = folderName.substring(GTaskStringUtils.MIUI_FOLDER_PREFFIX.length(),
@@ -183,28 +195,29 @@ public class TaskList extends Node {
         }
     }
 
+    // 根据游标数据确定同步操作类型
     public int getSyncAction(Cursor c) {
         try {
             if (c.getInt(SqlNote.LOCAL_MODIFIED_COLUMN) == 0) {
-                // there is no local update
+                // 本地没有修改
                 if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
-                    // no update both side
+                    // 两边都没有更新
                     return SYNC_ACTION_NONE;
                 } else {
-                    // apply remote to local
+                    // 应用远程到本地
                     return SYNC_ACTION_UPDATE_LOCAL;
                 }
             } else {
-                // validate gtask id
+                // 验证Gtask ID是否匹配
                 if (!c.getString(SqlNote.GTASK_ID_COLUMN).equals(getGid())) {
                     Log.e(TAG, "gtask id doesn't match");
                     return SYNC_ACTION_ERROR;
                 }
                 if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
-                    // local modification only
+                    // 只有本地修改
                     return SYNC_ACTION_UPDATE_REMOTE;
                 } else {
-                    // for folder conflicts, just apply local modification
+                    // 对于文件夹冲突，仅应用本地修改
                     return SYNC_ACTION_UPDATE_REMOTE;
                 }
             }
@@ -216,16 +229,18 @@ public class TaskList extends Node {
         return SYNC_ACTION_ERROR;
     }
 
+    // 获取子任务数量
     public int getChildTaskCount() {
         return mChildren.size();
     }
 
+    // 添加子任务到任务列表
     public boolean addChildTask(Task task) {
         boolean ret = false;
         if (task != null && !mChildren.contains(task)) {
             ret = mChildren.add(task);
             if (ret) {
-                // need to set prior sibling and parent
+                // 设置子任务的前一个兄弟任务和父任务列表
                 task.setPriorSibling(mChildren.isEmpty() ? null : mChildren
                         .get(mChildren.size() - 1));
                 task.setParent(this);
@@ -234,6 +249,7 @@ public class TaskList extends Node {
         return ret;
     }
 
+    // 在指定位置添加子任务
     public boolean addChildTask(Task task, int index) {
         if (index < 0 || index > mChildren.size()) {
             Log.e(TAG, "add child task: invalid index");
@@ -244,7 +260,7 @@ public class TaskList extends Node {
         if (task != null && pos == -1) {
             mChildren.add(index, task);
 
-            // update the task list
+            // 更新子任务列表
             Task preTask = null;
             Task afterTask = null;
             if (index != 0)
@@ -260,6 +276,7 @@ public class TaskList extends Node {
         return true;
     }
 
+    // 从任务列表中移除子任务
     public boolean removeChildTask(Task task) {
         boolean ret = false;
         int index = mChildren.indexOf(task);
@@ -267,11 +284,11 @@ public class TaskList extends Node {
             ret = mChildren.remove(task);
 
             if (ret) {
-                // reset prior sibling and parent
+                // 重置子任务的前一个兄弟任务和父任务列表
                 task.setPriorSibling(null);
                 task.setParent(null);
 
-                // update the task list
+                // 更新子任务列表
                 if (index != mChildren.size()) {
                     mChildren.get(index).setPriorSibling(
                             index == 0 ? null : mChildren.get(index - 1));
@@ -281,6 +298,7 @@ public class TaskList extends Node {
         return ret;
     }
 
+    // 移动子任务到指定位置
     public boolean moveChildTask(Task task, int index) {
 
         if (index < 0 || index >= mChildren.size()) {
@@ -299,6 +317,7 @@ public class TaskList extends Node {
         return (removeChildTask(task) && addChildTask(task, index));
     }
 
+    // 根据GID查找子任务
     public Task findChildTaskByGid(String gid) {
         for (int i = 0; i < mChildren.size(); i++) {
             Task t = mChildren.get(i);
@@ -309,10 +328,12 @@ public class TaskList extends Node {
         return null;
     }
 
+    // 获取子任务在列表中的索引
     public int getChildTaskIndex(Task task) {
         return mChildren.indexOf(task);
     }
 
+    // 根据索引获取子任务
     public Task getChildTaskByIndex(int index) {
         if (index < 0 || index >= mChildren.size()) {
             Log.e(TAG, "getTaskByIndex: invalid index");
@@ -321,6 +342,7 @@ public class TaskList extends Node {
         return mChildren.get(index);
     }
 
+    // 根据GID获取子任务
     public Task getChilTaskByGid(String gid) {
         for (Task task : mChildren) {
             if (task.getGid().equals(gid))
@@ -329,15 +351,18 @@ public class TaskList extends Node {
         return null;
     }
 
+    // 获取子任务列表
     public ArrayList<Task> getChildTaskList() {
         return this.mChildren;
     }
 
+    // 设置任务列表的索引
     public void setIndex(int index) {
         this.mIndex = index;
     }
 
+    // 获取任务列表的索引
     public int getIndex() {
         return this.mIndex;
     }
-}
+}

src/main/java/net/micode/notes/gtask/exception/ActionFailureException.java

@@ -16,18 +16,23 @@
 
 package net.micode.notes.gtask.exception;
 
+// ActionFailureException类用于表示任务操作失败的异常情况
 public class ActionFailureException extends RuntimeException {
+    // 序列化ID，用于标识类的版本
     private static final long serialVersionUID = 4425249765923293627L;
 
+    // 构造方法，无参数
     public ActionFailureException() {
         super();
     }
 
+    // 构造方法，带错误消息参数
     public ActionFailureException(String paramString) {
         super(paramString);
     }
 
+    // 构造方法，带错误消息和异常原因参数
     public ActionFailureException(String paramString, Throwable paramThrowable) {
         super(paramString, paramThrowable);
     }
-}
+}

src/main/java/net/micode/notes/gtask/exception/NetworkFailureException.java

@@ -16,18 +16,23 @@
 
 package net.micode.notes.gtask.exception;
 
+// NetworkFailureException类用于表示网络操作失败的异常情况
 public class NetworkFailureException extends Exception {
+    // 序列化ID，用于标识类的版本
     private static final long serialVersionUID = 2107610287180234136L;
 
+    // 构造方法，无参数
     public NetworkFailureException() {
         super();
     }
 
+    // 构造方法，带错误消息参数
     public NetworkFailureException(String paramString) {
         super(paramString);
     }
 
+    // 构造方法，带错误消息和异常原因参数
     public NetworkFailureException(String paramString, Throwable paramThrowable) {
         super(paramString, paramThrowable);
     }
-}
+}

src/main/java/net/micode/notes/gtask/remote/GTaskASyncTask.java

@@ -1,4 +1,3 @@
-
 /*
  * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
  *
@@ -28,23 +27,29 @@ import net.micode.notes.R;
 import net.micode.notes.ui.NotesListActivity;
 import net.micode.notes.ui.NotesPreferenceActivity;
 
-
 public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
 
+    // 通知ID，用于同步任务的通知
     private static int GTASK_SYNC_NOTIFICATION_ID = 5234235;
 
+    // 定义任务完成后的回调接口
     public interface OnCompleteListener {
         void onComplete();
     }
 
+    // 上下文环境，用于访问应用程序资源
     private Context mContext;
 
+    // 通知管理器，用于显示同步通知
     private NotificationManager mNotifiManager;
 
+    // GTask管理器，用于处理任务同步
     private GTaskManager mTaskManager;
 
+    // 任务完成后的回调监听器
     private OnCompleteListener mOnCompleteListener;
 
+    // 构造方法，初始化任务所需的资源
     public GTaskASyncTask(Context context, OnCompleteListener listener) {
         mContext = context;
         mOnCompleteListener = listener;
@@ -53,35 +58,19 @@ public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
         mTaskManager = GTaskManager.getInstance();
     }
 
+    // 取消同步操作
     public void cancelSync() {
         mTaskManager.cancelSync();
     }
 
+    // 发布进度信息
     public void publishProgess(String message) {
         publishProgress(new String[] {
-            message
+                message
         });
     }
 
-//    private void showNotification(int tickerId, String content) {
-//        Notification notification = new Notification(R.drawable.notification, mContext
-//                .getString(tickerId), System.currentTimeMillis());
-//        notification.defaults = Notification.DEFAULT_LIGHTS;
-//        notification.flags = Notification.FLAG_AUTO_CANCEL;
-//        PendingIntent pendingIntent;
-//        if (tickerId != R.string.ticker_success) {
-//            pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
-//                    NotesPreferenceActivity.class), 0);
-//
-//        } else {
-//            pendingIntent = PendingIntent.getActivity(mContext, 0, new Intent(mContext,
-//                    NotesListActivity.class), 0);
-//        }
-//        notification.setLatestEventInfo(mContext, mContext.getString(R.string.app_name), content,
-//                pendingIntent);
-//        mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification);
-//    }
-
+    // 显示通知
     private void showNotification(int tickerId, String content) {
         PendingIntent pendingIntent;
         if (tickerId != R.string.ticker_success) {
@@ -98,10 +87,11 @@ public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
                 .setContentIntent(pendingIntent)
                 .setWhen(System.currentTimeMillis())
                 .setOngoing(true);
-        Notification notification=builder.getNotification();
+        Notification notification = builder.getNotification();
         mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification);
     }
 
+    // 后台执行任务
     @Override
     protected Integer doInBackground(Void... unused) {
         publishProgess(mContext.getString(R.string.sync_progress_login, NotesPreferenceActivity
@@ -109,6 +99,7 @@ public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
         return mTaskManager.sync(mContext, this);
     }
 
+    // 更新进度
     @Override
     protected void onProgressUpdate(String... progress) {
         showNotification(R.string.ticker_syncing, progress[0]);
@@ -117,6 +108,7 @@ public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
         }
     }
 
+    // 任务完成后执行的操作
     @Override
     protected void onPostExecute(Integer result) {
         if (result == GTaskManager.STATE_SUCCESS) {
@@ -140,4 +132,4 @@ public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
             }).start();
         }
     }
-}
+}

src/main/java/net/micode/notes/gtask/remote/GTaskClient.java

@@ -44,7 +44,6 @@ import org.apache.http.impl.client.DefaultHttpClient;
 import org.apache.http.message.BasicNameValuePair;
 import org.apache.http.params.BasicHttpParams;
 import org.apache.http.params.HttpConnectionParams;
-import org.apache.http.params.HttpParams;
 import org.apache.http.params.HttpProtocolParams;
 import org.json.JSONArray;
 import org.json.JSONException;
@@ -60,36 +59,50 @@ import java.util.zip.GZIPInputStream;
 import java.util.zip.Inflater;
 import java.util.zip.InflaterInputStream;
 
-
 public class GTaskClient {
+    // 日志标签，用于调试和日志记录
     private static final String TAG = GTaskClient.class.getSimpleName();
 
+    // Google Tasks 的基础URL
     private static final String GTASK_URL = "https://mail.google.com/tasks/";
 
+    // Google Tasks 获取数据的URL
     private static final String GTASK_GET_URL = "https://mail.google.com/tasks/ig";
 
+    // Google Tasks 提交数据的URL
     private static final String GTASK_POST_URL = "https://mail.google.com/tasks/r/ig";
 
+    // 单例实例
     private static GTaskClient mInstance = null;
 
+    // HTTP客户端，用于网络请求
     private DefaultHttpClient mHttpClient;
 
+    // 获取数据的URL
     private String mGetUrl;
 
+    // 提交数据的URL
     private String mPostUrl;
 
+    // 客户端版本号
     private long mClientVersion;
 
+    // 登录状态
     private boolean mLoggedin;
 
+    // 最后登录时间
     private long mLastLoginTime;
 
+    // 操作ID
     private int mActionId;
 
+    // 当前账户
     private Account mAccount;
 
+    // 更新数组
     private JSONArray mUpdateArray;
 
+    // 私有构造方法，用于单例模式
     private GTaskClient() {
         mHttpClient = null;
         mGetUrl = GTASK_GET_URL;
@@ -102,6 +115,7 @@ public class GTaskClient {
         mUpdateArray = null;
     }
 
+    // 获取单例实例
     public static synchronized GTaskClient getInstance() {
         if (mInstance == null) {
             mInstance = new GTaskClient();
@@ -109,18 +123,18 @@ public class GTaskClient {
         return mInstance;
     }
 
+    // 登录Google账户
     public boolean login(Activity activity) {
-        // we suppose that the cookie would expire after 5 minutes
-        // then we need to re-login
+        // 检查是否需要重新登录
         final long interval = 1000 * 60 * 5;
         if (mLastLoginTime + interval < System.currentTimeMillis()) {
             mLoggedin = false;
         }
 
-        // need to re-login after account switch
+        // 检查账户是否切换
         if (mLoggedin
                 && !TextUtils.equals(getSyncAccount().name, NotesPreferenceActivity
-                        .getSyncAccountName(activity))) {
+                .getSyncAccountName(activity))) {
             mLoggedin = false;
         }
 
@@ -136,7 +150,7 @@ public class GTaskClient {
             return false;
         }
 
-        // login with custom domain if necessary
+        // 登录自定义域名
         if (!(mAccount.name.toLowerCase().endsWith("gmail.com") || mAccount.name.toLowerCase()
                 .endsWith("googlemail.com"))) {
             StringBuilder url = new StringBuilder(GTASK_URL).append("a/");
@@ -151,7 +165,7 @@ public class GTaskClient {
             }
         }
 
-        // try to login with google official url
+        // 登录官方URL
         if (!mLoggedin) {
             mGetUrl = GTASK_GET_URL;
             mPostUrl = GTASK_POST_URL;
@@ -164,6 +178,7 @@ public class GTaskClient {
         return true;
     }
 
+    // 登录Google账户并获取认证令牌
     private String loginGoogleAccount(Activity activity, boolean invalidateToken) {
         String authToken;
         AccountManager accountManager = AccountManager.get(activity);
@@ -189,7 +204,6 @@ public class GTaskClient {
             return null;
         }
 
-        // get the token now
         AccountManagerFuture<Bundle> accountManagerFuture = accountManager.getAuthToken(account,
                 "goanna_mobile", null, activity, null, null);
         try {
@@ -207,10 +221,10 @@ public class GTaskClient {
         return authToken;
     }
 
+    // 尝试登录Google Tasks
     private boolean tryToLoginGtask(Activity activity, String authToken) {
         if (!loginGtask(authToken)) {
-            // maybe the auth token is out of date, now let's invalidate the
-            // token and try again
+            // 如果认证令牌过期，重新获取并再次尝试登录
             authToken = loginGoogleAccount(activity, true);
             if (authToken == null) {
                 Log.e(TAG, "login google account failed");
@@ -225,6 +239,7 @@ public class GTaskClient {
         return true;
     }
 
+    // 登录Google Tasks
     private boolean loginGtask(String authToken) {
         int timeoutConnection = 10000;
         int timeoutSocket = 15000;
@@ -236,14 +251,13 @@ public class GTaskClient {
         mHttpClient.setCookieStore(localBasicCookieStore);
         HttpProtocolParams.setUseExpectContinue(mHttpClient.getParams(), false);
 
-        // login gtask
         try {
             String loginUrl = mGetUrl + "?auth=" + authToken;
             HttpGet httpGet = new HttpGet(loginUrl);
             HttpResponse response = null;
             response = mHttpClient.execute(httpGet);
 
-            // get the cookie now
+            // 获取登录后的Cookie
             List<Cookie> cookies = mHttpClient.getCookieStore().getCookies();
             boolean hasAuthCookie = false;
             for (Cookie cookie : cookies) {
@@ -255,7 +269,7 @@ public class GTaskClient {
                 Log.w(TAG, "it seems that there is no auth cookie");
             }
 
-            // get the client version
+            // 获取客户端版本号
             String resString = getResponseContent(response.getEntity());
             String jsBegin = "_setup(";
             String jsEnd = ")}</script>";
@@ -272,7 +286,6 @@ public class GTaskClient {
             e.printStackTrace();
             return false;
         } catch (Exception e) {
-            // simply catch all exceptions
             Log.e(TAG, "httpget gtask_url failed");
             return false;
         }
@@ -280,10 +293,12 @@ public class GTaskClient {
         return true;
     }
 
+    // 获取操作ID
     private int getActionId() {
         return mActionId++;
     }
 
+    // 创建HTTP POST请求
     private HttpPost createHttpPost() {
         HttpPost httpPost = new HttpPost(mPostUrl);
         httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
@@ -291,6 +306,7 @@ public class GTaskClient {
         return httpPost;
     }
 
+    // 获取HTTP响应内容
     private String getResponseContent(HttpEntity entity) throws IOException {
         String contentEncoding = null;
         if (entity.getContentEncoding() != null) {
@@ -323,6 +339,7 @@ public class GTaskClient {
         }
     }
 
+    // 发送POST请求
     private JSONObject postRequest(JSONObject js) throws NetworkFailureException {
         if (!mLoggedin) {
             Log.e(TAG, "please login first");
@@ -336,7 +353,6 @@ public class GTaskClient {
             UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, "UTF-8");
             httpPost.setEntity(entity);
 
-            // execute the post
             HttpResponse response = mHttpClient.execute(httpPost);
             String jsString = getResponseContent(response.getEntity());
             return new JSONObject(jsString);
@@ -360,20 +376,18 @@ public class GTaskClient {
         }
     }
 
+    // 创建任务
     public void createTask(Task task) throws NetworkFailureException {
         commitUpdate();
         try {
             JSONObject jsPost = new JSONObject();
             JSONArray actionList = new JSONArray();
 
-            // action_list
             actionList.put(task.getCreateAction(getActionId()));
             jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
 
-            // client_version
             jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
 
-            // post
             JSONObject jsResponse = postRequest(jsPost);
             JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
                     GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
@@ -386,20 +400,18 @@ public class GTaskClient {
         }
     }
 
+    // 创建任务列表
     public void createTaskList(TaskList tasklist) throws NetworkFailureException {
         commitUpdate();
         try {
             JSONObject jsPost = new JSONObject();
             JSONArray actionList = new JSONArray();
 
-            // action_list
             actionList.put(tasklist.getCreateAction(getActionId()));
             jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
 
-            // client version
             jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
 
-            // post
             JSONObject jsResponse = postRequest(jsPost);
             JSONObject jsResult = (JSONObject) jsResponse.getJSONArray(
                     GTaskStringUtils.GTASK_JSON_RESULTS).get(0);
@@ -412,15 +424,14 @@ public class GTaskClient {
         }
     }
 
+    // 提交更新
     public void commitUpdate() throws NetworkFailureException {
         if (mUpdateArray != null) {
             try {
                 JSONObject jsPost = new JSONObject();
 
-                // action_list
                 jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, mUpdateArray);
 
-                // client_version
                 jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
 
                 postRequest(jsPost);
@@ -433,10 +444,9 @@ public class GTaskClient {
         }
     }
 
+    // 添加更新节点
     public void addUpdateNode(Node node) throws NetworkFailureException {
         if (node != null) {
-            // too many update items may result in an error
-            // set max to 10 items
             if (mUpdateArray != null && mUpdateArray.length() > 10) {
                 commitUpdate();
             }
@@ -447,6 +457,7 @@ public class GTaskClient {
         }
     }
 
+    // 移动任务
     public void moveTask(Task task, TaskList preParent, TaskList curParent)
             throws NetworkFailureException {
         commitUpdate();
@@ -455,26 +466,21 @@ public class GTaskClient {
             JSONArray actionList = new JSONArray();
             JSONObject action = new JSONObject();
 
-            // action_list
             action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
                     GTaskStringUtils.GTASK_JSON_ACTION_TYPE_MOVE);
             action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
             action.put(GTaskStringUtils.GTASK_JSON_ID, task.getGid());
             if (preParent == curParent && task.getPriorSibling() != null) {
-                // put prioring_sibing_id only if moving within the tasklist and
-                // it is not the first one
                 action.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, task.getPriorSibling());
             }
             action.put(GTaskStringUtils.GTASK_JSON_SOURCE_LIST, preParent.getGid());
             action.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT, curParent.getGid());
             if (preParent != curParent) {
-                // put the dest_list only if moving between tasklists
                 action.put(GTaskStringUtils.GTASK_JSON_DEST_LIST, curParent.getGid());
             }
             actionList.put(action);
             jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
 
-            // client_version
             jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
 
             postRequest(jsPost);
@@ -486,18 +492,17 @@ public class GTaskClient {
         }
     }
 
+    // 删除节点
     public void deleteNode(Node node) throws NetworkFailureException {
         commitUpdate();
         try {
             JSONObject jsPost = new JSONObject();
             JSONArray actionList = new JSONArray();
 
-            // action_list
             node.setDeleted(true);
             actionList.put(node.getUpdateAction(getActionId()));
             jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
 
-            // client_version
             jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
 
             postRequest(jsPost);
@@ -509,6 +514,7 @@ public class GTaskClient {
         }
     }
 
+    // 获取任务列表
     public JSONArray getTaskLists() throws NetworkFailureException {
         if (!mLoggedin) {
             Log.e(TAG, "please login first");
@@ -520,7 +526,6 @@ public class GTaskClient {
             HttpResponse response = null;
             response = mHttpClient.execute(httpGet);
 
-            // get the task list
             String resString = getResponseContent(response.getEntity());
             String jsBegin = "_setup(";
             String jsEnd = ")}</script>";
@@ -547,6 +552,7 @@ public class GTaskClient {
         }
     }
 
+    // 获取任务列表中的任务
     public JSONArray getTaskList(String listGid) throws NetworkFailureException {
         commitUpdate();
         try {
@@ -554,7 +560,6 @@ public class GTaskClient {
             JSONArray actionList = new JSONArray();
             JSONObject action = new JSONObject();
 
-            // action_list
             action.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
                     GTaskStringUtils.GTASK_JSON_ACTION_TYPE_GETALL);
             action.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, getActionId());
@@ -563,7 +568,6 @@ public class GTaskClient {
             actionList.put(action);
             jsPost.put(GTaskStringUtils.GTASK_JSON_ACTION_LIST, actionList);
 
-            // client_version
             jsPost.put(GTaskStringUtils.GTASK_JSON_CLIENT_VERSION, mClientVersion);
 
             JSONObject jsResponse = postRequest(jsPost);
@@ -575,11 +579,13 @@ public class GTaskClient {
         }
     }
 
+    // 获取同步账户
     public Account getSyncAccount() {
         return mAccount;
     }
 
+    // 重置更新数组
     public void resetUpdateArray() {
         mUpdateArray = null;
     }
-}
+}

src/main/java/net/micode/notes/gtask/remote/GTaskManager.java

@@ -47,46 +47,57 @@ import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Map;
 
-
 public class GTaskManager {
+    // 日志标签，用于调试和日志记录
     private static final String TAG = GTaskManager.class.getSimpleName();
 
+    // 同步状态常量
     public static final int STATE_SUCCESS = 0;
-
     public static final int STATE_NETWORK_ERROR = 1;
-
     public static final int STATE_INTERNAL_ERROR = 2;
-
     public static final int STATE_SYNC_IN_PROGRESS = 3;
-
     public static final int STATE_SYNC_CANCELLED = 4;
 
+    // 单例实例
     private static GTaskManager mInstance = null;
 
+    // 当前活动的Activity
     private Activity mActivity;
 
+    // 上下文环境
     private Context mContext;
 
+    // 内容解析器
     private ContentResolver mContentResolver;
 
+    // 同步状态
     private boolean mSyncing;
 
+    // 是否取消同步
     private boolean mCancelled;
 
+    // GTask列表映射
     private HashMap<String, TaskList> mGTaskListHashMap;
 
+    // GTask映射
     private HashMap<String, Node> mGTaskHashMap;
 
+    // 元数据映射
     private HashMap<String, MetaData> mMetaHashMap;
 
+    // 元数据列表
     private TaskList mMetaList;
 
+    // 本地删除ID集合
     private HashSet<Long> mLocalDeleteIdMap;
 
+    // GID到NID的映射
     private HashMap<String, Long> mGidToNid;
 
+    // NID到GID的映射
     private HashMap<Long, String> mNidToGid;
 
+    // 私有构造方法，用于单例模式
     private GTaskManager() {
         mSyncing = false;
         mCancelled = false;
@@ -99,6 +110,7 @@ public class GTaskManager {
         mNidToGid = new HashMap<Long, String>();
     }
 
+    // 获取单例实例
     public static synchronized GTaskManager getInstance() {
         if (mInstance == null) {
             mInstance = new GTaskManager();
@@ -106,11 +118,12 @@ public class GTaskManager {
         return mInstance;
     }
 
+    // 设置活动的Activity
     public synchronized void setActivityContext(Activity activity) {
-        // used for getting authtoken
         mActivity = activity;
     }
 
+    // 执行同步操作
     public int sync(Context context, GTaskASyncTask asyncTask) {
         if (mSyncing) {
             Log.d(TAG, "Sync is in progress");
@@ -131,18 +144,18 @@ public class GTaskManager {
             GTaskClient client = GTaskClient.getInstance();
             client.resetUpdateArray();
 
-            // login google task
+            // 登录Google Tasks
             if (!mCancelled) {
                 if (!client.login(mActivity)) {
                     throw new NetworkFailureException("login google task failed");
                 }
             }
 
-            // get the task list from google
+            // 初始化GTask列表
             asyncTask.publishProgess(mContext.getString(R.string.sync_progress_init_list));
             initGTaskList();
 
-            // do content sync work
+            // 执行内容同步
             asyncTask.publishProgess(mContext.getString(R.string.sync_progress_syncing));
             syncContent();
         } catch (NetworkFailureException e) {
@@ -168,6 +181,7 @@ public class GTaskManager {
         return mCancelled ? STATE_SYNC_CANCELLED : STATE_SUCCESS;
     }
 
+    // 初始化GTask列表
     private void initGTaskList() throws NetworkFailureException {
         if (mCancelled)
             return;
@@ -175,7 +189,7 @@ public class GTaskManager {
         try {
             JSONArray jsTaskLists = client.getTaskLists();
 
-            // init meta list first
+            // 初始化元数据列表
             mMetaList = null;
             for (int i = 0; i < jsTaskLists.length(); i++) {
                 JSONObject object = jsTaskLists.getJSONObject(i);
@@ -187,7 +201,7 @@ public class GTaskManager {
                     mMetaList = new TaskList();
                     mMetaList.setContentByRemoteJSON(object);
 
-                    // load meta data
+                    // 加载元数据
                     JSONArray jsMetas = client.getTaskList(gid);
                     for (int j = 0; j < jsMetas.length(); j++) {
                         object = (JSONObject) jsMetas.getJSONObject(j);
@@ -203,7 +217,7 @@ public class GTaskManager {
                 }
             }
 
-            // create meta list if not existed
+            // 创建元数据列表（如果不存在）
             if (mMetaList == null) {
                 mMetaList = new TaskList();
                 mMetaList.setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX
@@ -211,7 +225,7 @@ public class GTaskManager {
                 GTaskClient.getInstance().createTaskList(mMetaList);
             }
 
-            // init task list
+            // 初始化任务列表
             for (int i = 0; i < jsTaskLists.length(); i++) {
                 JSONObject object = jsTaskLists.getJSONObject(i);
                 String gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);
@@ -219,13 +233,13 @@ public class GTaskManager {
 
                 if (name.startsWith(GTaskStringUtils.MIUI_FOLDER_PREFFIX)
                         && !name.equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX
-                                + GTaskStringUtils.FOLDER_META)) {
+                        + GTaskStringUtils.FOLDERMETA)) {
                     TaskList tasklist = new TaskList();
                     tasklist.setContentByRemoteJSON(object);
                     mGTaskListHashMap.put(gid, tasklist);
                     mGTaskHashMap.put(gid, tasklist);
 
-                    // load tasks
+                    // 加载任务
                     JSONArray jsTasks = client.getTaskList(gid);
                     for (int j = 0; j < jsTasks.length(); j++) {
                         object = (JSONObject) jsTasks.getJSONObject(j);
@@ -247,6 +261,7 @@ public class GTaskManager {
         }
     }
 
+    // 执行内容同步
     private void syncContent() throws NetworkFailureException {
         int syncType;
         Cursor c = null;
@@ -259,7 +274,7 @@ public class GTaskManager {
             return;
         }
 
-        // for local deleted note
+        // 同步本地删除的便签
         try {
             c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
                     "(type<>? AND parent_id=?)", new String[] {
@@ -286,10 +301,10 @@ public class GTaskManager {
             }
         }
 
-        // sync folder first
+        // 同步文件夹
         syncFolder();
 
-        // for note existing in database
+        // 同步便签
         try {
             c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
                     "(type=? AND parent_id<>?)", new String[] {
@@ -306,10 +321,8 @@ public class GTaskManager {
                         syncType = node.getSyncAction(c);
                     } else {
                         if (c.getString(SqlNote.GTASK_ID_COLUMN).trim().length() == 0) {
-                            // local add
                             syncType = Node.SYNC_ACTION_ADD_REMOTE;
                         } else {
-                            // remote delete
                             syncType = Node.SYNC_ACTION_DEL_LOCAL;
                         }
                     }
@@ -326,7 +339,7 @@ public class GTaskManager {
             }
         }
 
-        // go through remaining items
+        // 同步剩余项目
         Iterator<Map.Entry<String, Node>> iter = mGTaskHashMap.entrySet().iterator();
         while (iter.hasNext()) {
             Map.Entry<String, Node> entry = iter.next();
@@ -334,23 +347,21 @@ public class GTaskManager {
             doContentSync(Node.SYNC_ACTION_ADD_LOCAL, node, null);
         }
 
-        // mCancelled can be set by another thread, so we neet to check one by
-        // one
-        // clear local delete table
+        // 清除本地删除表
         if (!mCancelled) {
             if (!DataUtils.batchDeleteNotes(mContentResolver, mLocalDeleteIdMap)) {
                 throw new ActionFailureException("failed to batch-delete local deleted notes");
             }
         }
 
-        // refresh local sync id
+        // 刷新本地同步ID
         if (!mCancelled) {
             GTaskClient.getInstance().commitUpdate();
             refreshLocalSyncId();
         }
-
     }
 
+    // 同步文件夹
     private void syncFolder() throws NetworkFailureException {
         Cursor c = null;
         String gid;
@@ -361,7 +372,7 @@ public class GTaskManager {
             return;
         }
 
-        // for root folder
+        // 同步根文件夹
         try {
             c = mContentResolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI,
                     Notes.ID_ROOT_FOLDER), SqlNote.PROJECTION_NOTE, null, null, null);
@@ -373,7 +384,6 @@ public class GTaskManager {
                     mGTaskHashMap.remove(gid);
                     mGidToNid.put(gid, (long) Notes.ID_ROOT_FOLDER);
                     mNidToGid.put((long) Notes.ID_ROOT_FOLDER, gid);
-                    // for system folder, only update remote name if necessary
                     if (!node.getName().equals(
                             GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT))
                         doContentSync(Node.SYNC_ACTION_UPDATE_REMOTE, node, c);
@@ -390,11 +400,11 @@ public class GTaskManager {
             }
         }
 
-        // for call-note folder
+        // 同步通话记录文件夹
         try {
             c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE, "(_id=?)",
                     new String[] {
-                        String.valueOf(Notes.ID_CALL_RECORD_FOLDER)
+                            String.valueOf(Notes.ID_CALL_RECORD_FOLDER)
                     }, null);
             if (c != null) {
                 if (c.moveToNext()) {
@@ -404,8 +414,6 @@ public class GTaskManager {
                         mGTaskHashMap.remove(gid);
                         mGidToNid.put(gid, (long) Notes.ID_CALL_RECORD_FOLDER);
                         mNidToGid.put((long) Notes.ID_CALL_RECORD_FOLDER, gid);
-                        // for system folder, only update remote name if
-                        // necessary
                         if (!node.getName().equals(
                                 GTaskStringUtils.MIUI_FOLDER_PREFFIX
                                         + GTaskStringUtils.FOLDER_CALL_NOTE))
@@ -424,7 +432,7 @@ public class GTaskManager {
             }
         }
 
-        // for local existing folders
+        // 同步本地现有文件夹
         try {
             c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
                     "(type=? AND parent_id<>?)", new String[] {
@@ -441,10 +449,8 @@ public class GTaskManager {
                         syncType = node.getSyncAction(c);
                     } else {
                         if (c.getString(SqlNote.GTASK_ID_COLUMN).trim().length() == 0) {
-                            // local add
                             syncType = Node.SYNC_ACTION_ADD_REMOTE;
                         } else {
-                            // remote delete
                             syncType = Node.SYNC_ACTION_DEL_LOCAL;
                         }
                     }
@@ -460,7 +466,7 @@ public class GTaskManager {
             }
         }
 
-        // for remote add folders
+        // 同步远程添加的文件夹
         Iterator<Map.Entry<String, TaskList>> iter = mGTaskListHashMap.entrySet().iterator();
         while (iter.hasNext()) {
             Map.Entry<String, TaskList> entry = iter.next();
@@ -476,6 +482,7 @@ public class GTaskManager {
             GTaskClient.getInstance().commitUpdate();
     }
 
+    // 执行内容同步操作
     private void doContentSync(int syncType, Node node, Cursor c) throws NetworkFailureException {
         if (mCancelled) {
             return;
@@ -510,18 +517,17 @@ public class GTaskManager {
                 updateRemoteNode(node, c);
                 break;
             case Node.SYNC_ACTION_UPDATE_CONFLICT:
-                // merging both modifications maybe a good idea
-                // right now just use local update simply
                 updateRemoteNode(node, c);
                 break;
             case Node.SYNC_ACTION_NONE:
                 break;
             case Node.SYNC_ACTION_ERROR:
             default:
-                throw new ActionFailureException("unkown sync action type");
+                throw new ActionFailureException("unknown sync action type");
         }
     }
 
+    // 添加本地节点
     private void addLocalNode(Node node) throws NetworkFailureException {
         if (mCancelled) {
             return;
@@ -549,7 +555,6 @@ public class GTaskManager {
                     if (note.has(NoteColumns.ID)) {
                         long id = note.getLong(NoteColumns.ID);
                         if (DataUtils.existInNoteDatabase(mContentResolver, id)) {
-                            // the id is not available, have to create a new one
                             note.remove(NoteColumns.ID);
                         }
                     }
@@ -562,8 +567,6 @@ public class GTaskManager {
                         if (data.has(DataColumns.ID)) {
                             long dataId = data.getLong(DataColumns.ID);
                             if (DataUtils.existInDataDatabase(mContentResolver, dataId)) {
-                                // the data id is not available, have to create
-                                // a new one
                                 data.remove(DataColumns.ID);
                             }
                         }
@@ -584,26 +587,22 @@ public class GTaskManager {
             sqlNote.setParentId(parentId.longValue());
         }
 
-        // create the local node
         sqlNote.setGtaskId(node.getGid());
         sqlNote.commit(false);
 
-        // update gid-nid mapping
         mGidToNid.put(node.getGid(), sqlNote.getId());
         mNidToGid.put(sqlNote.getId(), node.getGid());
 
-        // update meta
         updateRemoteMeta(node.getGid(), sqlNote);
     }
 
+    // 更新本地节点
     private void updateLocalNode(Node node, Cursor c) throws NetworkFailureException {
         if (mCancelled) {
             return;
         }
 
-        SqlNote sqlNote;
-        // update the note locally
-        sqlNote = new SqlNote(mContext, c);
+        SqlNote sqlNote = new SqlNote(mContext, c);
         sqlNote.setContent(node.getLocalJSONFromContent());
 
         Long parentId = (node instanceof Task) ? mGidToNid.get(((Task) node).getParent().getGid())
@@ -615,10 +614,10 @@ public class GTaskManager {
         sqlNote.setParentId(parentId.longValue());
         sqlNote.commit(true);
 
-        // update meta info
         updateRemoteMeta(node.getGid(), sqlNote);
     }
 
+    // 添加远程节点
     private void addRemoteNode(Node node, Cursor c) throws NetworkFailureException {
         if (mCancelled) {
             return;
@@ -627,7 +626,6 @@ public class GTaskManager {
         SqlNote sqlNote = new SqlNote(mContext, c);
         Node n;
 
-        // update remotely
         if (sqlNote.isNoteType()) {
             Task task = new Task();
             task.setContentByLocalJSON(sqlNote.getContent());
@@ -642,12 +640,10 @@ public class GTaskManager {
             GTaskClient.getInstance().createTask(task);
             n = (Node) task;
 
-            // add meta
             updateRemoteMeta(task.getGid(), sqlNote);
         } else {
             TaskList tasklist = null;
 
-            // we need to skip folder if it has already existed
             String folderName = GTaskStringUtils.MIUI_FOLDER_PREFFIX;
             if (sqlNote.getId() == Notes.ID_ROOT_FOLDER)
                 folderName += GTaskStringUtils.FOLDER_DEFAULT;
@@ -671,7 +667,6 @@ public class GTaskManager {
                 }
             }
 
-            // no match we can add now
             if (tasklist == null) {
                 tasklist = new TaskList();
                 tasklist.setContentByLocalJSON(sqlNote.getContent());
@@ -681,17 +676,16 @@ public class GTaskManager {
             n = (Node) tasklist;
         }
 
-        // update local note
         sqlNote.setGtaskId(n.getGid());
         sqlNote.commit(false);
         sqlNote.resetLocalModified();
         sqlNote.commit(true);
 
-        // gid-id mapping
         mGidToNid.put(n.getGid(), sqlNote.getId());
         mNidToGid.put(sqlNote.getId(), n.getGid());
     }
 
+    // 更新远程节点
     private void updateRemoteNode(Node node, Cursor c) throws NetworkFailureException {
         if (mCancelled) {
             return;
@@ -699,14 +693,11 @@ public class GTaskManager {
 
         SqlNote sqlNote = new SqlNote(mContext, c);
 
-        // update remotely
         node.setContentByLocalJSON(sqlNote.getContent());
         GTaskClient.getInstance().addUpdateNode(node);
 
-        // update meta
         updateRemoteMeta(node.getGid(), sqlNote);
 
-        // move task if necessary
         if (sqlNote.isNoteType()) {
             Task task = (Task) node;
             TaskList preParentList = task.getParent();
@@ -725,11 +716,11 @@ public class GTaskManager {
             }
         }
 
-        // clear local modified flag
         sqlNote.resetLocalModified();
         sqlNote.commit(true);
     }
 
+    // 更新远程元数据
     private void updateRemoteMeta(String gid, SqlNote sqlNote) throws NetworkFailureException {
         if (sqlNote != null && sqlNote.isNoteType()) {
             MetaData metaData = mMetaHashMap.get(gid);
@@ -746,12 +737,12 @@ public class GTaskManager {
         }
     }
 
+    // 刷新本地同步ID
     private void refreshLocalSyncId() throws NetworkFailureException {
         if (mCancelled) {
             return;
         }
 
-        // get the latest gtask list
         mGTaskHashMap.clear();
         mGTaskListHashMap.clear();
         mMetaHashMap.clear();
@@ -790,11 +781,13 @@ public class GTaskManager {
         }
     }
 
+    // 获取同步账户名称
     public String getSyncAccount() {
         return GTaskClient.getInstance().getSyncAccount().name;
     }
 
+    // 取消同步
     public void cancelSync() {
         mCancelled = true;
     }
-}
+}

src/main/java/net/micode/notes/gtask/remote/GTaskSyncService.java

@@ -24,24 +24,28 @@ import android.os.Bundle;
 import android.os.IBinder;
 
 public class GTaskSyncService extends Service {
+    // 广播操作类型
     public final static String ACTION_STRING_NAME = "sync_action_type";
 
+    // 同步操作类型常量
     public final static int ACTION_START_SYNC = 0;
-
     public final static int ACTION_CANCEL_SYNC = 1;
-
     public final static int ACTION_INVALID = 2;
 
+    // 广播名称
     public final static String GTASK_SERVICE_BROADCAST_NAME = "net.micode.notes.gtask.remote.gtask_sync_service";
 
+    // 广播数据键
     public final static String GTASK_SERVICE_BROADCAST_IS_SYNCING = "isSyncing";
-
     public final static String GTASK_SERVICE_BROADCAST_PROGRESS_MSG = "progressMsg";
 
+    // 同步任务实例
     private static GTaskASyncTask mSyncTask = null;
 
+    // 同步进度信息
     private static String mSyncProgress = "";
 
+    // 开始同步
     private void startSync() {
         if (mSyncTask == null) {
             mSyncTask = new GTaskASyncTask(this, new GTaskASyncTask.OnCompleteListener() {
@@ -56,17 +60,20 @@ public class GTaskSyncService extends Service {
         }
     }
 
+    // 取消同步
     private void cancelSync() {
         if (mSyncTask != null) {
             mSyncTask.cancelSync();
         }
     }
 
+    // 服务创建时调用
     @Override
     public void onCreate() {
         mSyncTask = null;
     }
 
+    // 处理启动命令
     @Override
     public int onStartCommand(Intent intent, int flags, int startId) {
         Bundle bundle = intent.getExtras();
@@ -86,6 +93,7 @@ public class GTaskSyncService extends Service {
         return super.onStartCommand(intent, flags, startId);
     }
 
+    // 低内存时调用
     @Override
     public void onLowMemory() {
         if (mSyncTask != null) {
@@ -93,10 +101,12 @@ public class GTaskSyncService extends Service {
         }
     }
 
+    // 返回绑定的IBinder对象
     public IBinder onBind(Intent intent) {
         return null;
     }
 
+    // 发送广播
     public void sendBroadcast(String msg) {
         mSyncProgress = msg;
         Intent intent = new Intent(GTASK_SERVICE_BROADCAST_NAME);
@@ -105,6 +115,7 @@ public class GTaskSyncService extends Service {
         sendBroadcast(intent);
     }
 
+    // 静态方法，用于启动同步
     public static void startSync(Activity activity) {
         GTaskManager.getInstance().setActivityContext(activity);
         Intent intent = new Intent(activity, GTaskSyncService.class);
@@ -112,17 +123,20 @@ public class GTaskSyncService extends Service {
         activity.startService(intent);
     }
 
+    // 静态方法，用于取消同步
     public static void cancelSync(Context context) {
         Intent intent = new Intent(context, GTaskSyncService.class);
         intent.putExtra(GTaskSyncService.ACTION_STRING_NAME, GTaskSyncService.ACTION_CANCEL_SYNC);
         context.startService(intent);
     }
 
+    // 静态方法，用于检查是否正在同步
     public static boolean isSyncing() {
         return mSyncTask != null;
     }
 
+    // 静态方法，用于获取同步进度信息
     public static String getProgressString() {
         return mSyncProgress;
     }
-}
+}

src/main/java/net/micode/notes/ui/AlarmAlertActivity.java

@@ -13,14 +13,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-<<<<<<< HEAD
-//test
-package net.micode.notes.ui;
-=======
 
 package net.micode.notes.ui;
 
->>>>>>> ea0ba46500536be46ebbdf4516f38b38518ccdaa
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.content.Context;

src/main/res/layout/note_list.xml

@@ -18,8 +18,8 @@
 <FrameLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="fill_parent"
-    android:layout_height="fill_parent"
-    android:background="@drawable/list_background">
+    android:layout_height="fill_parent">
+<!--    android:background="@drawable/list_background">-->
 
     <LinearLayout
         android:layout_width="fill_parent"

src/main/res/menu/note_list.xml

@@ -36,4 +36,16 @@
     <item
         android:id="@+id/menu_search"
         android:title="@string/menu_search"/>
+
+    <item
+            android:id="@+id/menu_graygoo"
+            android:title="@string/menu_graygoo"/>
+
+    <item
+            android:id="@+id/menu_miku"
+            android:title="@string/menu_miku"/>
+
+    <item
+            android:id="@+id/menu_hutao"
+            android:title="@string/menu_hutao"/>
 </menu>

src/main/res/values/strings.xml

@@ -39,6 +39,10 @@
     <string name="file_path">/MIUI/notes/</string>
     <string name="file_name_txt_format">notes_%s.txt</string>
     <!-- notes list string -->
+    <string name="menu_graygoo">Background: graygoo</string>
+    <string name="menu_miku">Background: miku</string>
+    <string name="menu_hutao">Background: hutao</string>
+
     <string name="format_folder_files_count">(%d)</string>
     <string name="menu_create_folder">New Folder</string>
     <string name="menu_export_text">Export text</string>