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

# Conflicts:
#	src/main/java/net/micode/notes/ui/AlarmAlertActivity.java

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

@@ -14,8 +14,12 @@
  * 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;
@@ -23,9 +27,13 @@ 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;
@@ -33,104 +41,104 @@ 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;
-    private String mSnippet;
-    private static final int SNIPPET_PREW_MAX_LEN = 60;
-    MediaPlayer mPlayer;
+    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
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        requestWindowFeature(Window.FEATURE_NO_TITLE);
+        requestWindowFeature(Window.FEATURE_NO_TITLE); // 隐藏标题栏
 
         final Window win = getWindow();
-        win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
+        win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); // 设置窗口在锁屏状态下显示
 
-        if (!isScreenOn()) {
+        if (!isScreenOn()) { // 如果屏幕未点亮，则设置相关标志以点亮屏幕
             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();
+        Intent intent = getIntent(); // 获取启动此活动的Intent
 
         try {
-            mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
-            mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
+            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
             mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0,
                     SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
-                    : mSnippet;
+                    : mSnippet; // 截取摘要并添加额外信息
         } catch (IllegalArgumentException e) {
             e.printStackTrace();
             return;
         }
 
-        mPlayer = new MediaPlayer();
-        if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
-            showActionDialog();
-            playAlarmSound();
+        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
         } else {
-            finish();
+            finish(); // 如果便签不可见，则结束活动
         }
     }
 
-    private boolean isScreenOn() {
+    private boolean isScreenOn() { // 检查屏幕是否点亮
         PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
         return pm.isScreenOn();
     }
 
-    private void playAlarmSound() {
-        Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);
+    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
 
         int silentModeStreams = Settings.System.getInt(getContentResolver(),
-                Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
+                Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0); // 获取静音模式下受影响的音频流类型
 
-        if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 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
             mPlayer.setAudioStreamType(silentModeStreams);
         } else {
             mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
         }
         try {
-            mPlayer.setDataSource(this, url);
-            mPlayer.prepare();
-            mPlayer.setLooping(true);
-            mPlayer.start();
+            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
         } 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() {
+    private void showActionDialog() { // 显示操作对话框
         AlertDialog.Builder dialog = new AlertDialog.Builder(this);
-        dialog.setTitle(R.string.app_name);
-        dialog.setMessage(mSnippet);
-        dialog.setPositiveButton(R.string.notealert_ok, 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
         if (isScreenOn()) {
-            dialog.setNegativeButton(R.string.notealert_enter, this);
+            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.show().setOnDismissListener(this);
+        dialog.show().setOnDismissListener(this); // 显示对话框并设置关闭监听器
     }
 
-    public void onClick(DialogInterface dialog, int which) {
+    public void onClick(DialogInterface dialog, int which) { // 对话框按钮点击事件处理
         switch (which) {
             case DialogInterface.BUTTON_NEGATIVE:
                 Intent intent = new Intent(this, NoteEditActivity.class);
@@ -143,16 +151,16 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
         }
     }
 
-    public void onDismiss(DialogInterface dialog) {
-        stopAlarmSound();
-        finish();
+    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
     }
 
-    private void stopAlarmSound() {
+    private void stopAlarmSound() { // 停止闹钟声音
         if (mPlayer != null) {
-            mPlayer.stop();
-            mPlayer.release();
-            mPlayer = null;
+            mPlayer.stop(); // 停止播放
+            mPlayer.release(); // 释放资源
+            mPlayer = null; // 置空引用
         }
     }
-}
+}

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

@@ -16,6 +16,7 @@
 
 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;
@@ -24,42 +25,59 @@ 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,
-        NoteColumns.ALERTED_DATE
+            NoteColumns.ID,          // 便签ID列
+            NoteColumns.ALERTED_DATE // 提醒时间列
     };
 
-    private static final int COLUMN_ID                = 0;
-    private static final int COLUMN_ALERTED_DATE      = 1;
+    // 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
 
     @Override
     public void onReceive(Context context, Intent intent) {
-        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);
+        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）
 
         if (c != null) {
-            if (c.moveToFirst()) {
+            if (c.moveToFirst()) { // 游标移动到第一条记录
                 do {
-                    long alertDate = c.getLong(COLUMN_ALERTED_DATE);
+                    long alertDate = c.getLong(COLUMN_ALERTED_DATE); // 获取提醒时间
+
+                    // 创建发送给AlarmReceiver的Intent
                     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);
-                    AlarmManager alermManager = (AlarmManager) context
+
+                    // 获取系统闹钟服务
+                    AlarmManager alarmManager = (AlarmManager) context
                             .getSystemService(Context.ALARM_SERVICE);
-                    alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
-                } while (c.moveToNext());
+                    // 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
             }
-            c.close();
+            c.close(); // 关闭游标释放资源
         }
     }
-}
+}

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

@@ -1,30 +1,39 @@
 /*
- * 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.
+ * 版权声明，指明代码归属于MiCode开源社区
+ * 遵循Apache License 2.0协议
  */
 
 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

@@ -1,17 +1,6 @@
 /*
- * 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.
+ * 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。
  */
 
 package net.micode.notes.ui;
@@ -21,64 +10,102 @@ 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);
@@ -88,12 +115,14 @@ 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);
@@ -104,9 +133,11 @@ 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));
@@ -115,142 +146,256 @@ 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;
+                offset += 1; // 增加一小时
             } else if (oldVal == minValue && newVal == maxValue) {
-                offset -= 1;
+                offset -= 1; // 减少一小时
             }
+
+            // 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();
+                    updateAmPmControl(); // 更新 AM/PM 显示
                 } else {
                     mIsAm = true;
-                    updateAmPmControl();
+                    updateAmPmControl(); // 更新 AM/PM 显示
                 }
             }
+
+            // 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);
-        mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL);
-        mDateSpinner.setOnValueChangedListener(mOnDateChangedListener);
+        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
 
+        // 初始化小时选择器 NumberPicker
         mHourSpinner = (NumberPicker) findViewById(R.id.hour);
-        mHourSpinner.setOnValueChangedListener(mOnHourChangedListener);
-        mMinuteSpinner =  (NumberPicker) findViewById(R.id.minute);
-        mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL);
-        mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL);
-        mMinuteSpinner.setOnLongPressUpdateInterval(100);
-        mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener);
+        mHourSpinner.setOnValueChangedListener(mOnHourChangedListener); // 设置监听器
 
+        // 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);
-        mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL);
-        mAmPmSpinner.setDisplayedValues(stringsForAmPm);
-        mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);
+        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
 
-        // update controls to initial state
-        updateDateControl();
-        updateHourControl();
-        updateAmPmControl();
+        // 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
 
+        // 设置是否启用 24 小时制视图
         set24HourView(is24HourView);
 
-        // set to current time
+        // 设置初始日期时间
         setCurrentDate(date);
 
+        // 设置控件的启用状态
         setEnabled(isEnabled());
 
-        // set the content descriptions
+        // 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
         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);
-        mDateSpinner.setEnabled(enabled);
-        mMinuteSpinner.setEnabled(enabled);
-        mHourSpinner.setEnabled(enabled);
-        mAmPmSpinner.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
         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;
+        return mIsEnabled; // 返回内部保存的启用状态标志
     }
 
     /**
-     * Get the current date in millis
+     * 获取当前选择的日期时间（以毫秒为单位的时间戳）。
      *
-     * @return the current date in millis
+     * @return 当前日期时间对应的毫秒值
      */
     public long getCurrentDateInTimeMillis() {
-        return mDate.getTimeInMillis();
+        return mDate.getTimeInMillis(); // 返回 Calendar 对象中的时间戳
     }
 
     /**
-     * Set the current date
+     * 设置当前日期时间。
      *
-     * @param date The current date in millis
+     * @param date 给定的初始时间，以毫秒为单位的时间戳
      */
     public void setCurrentDate(long date) {
         Calendar cal = Calendar.getInstance();
-        cal.setTimeInMillis(date);
-        setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH),
-                cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE));
+        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));
     }
 
     /**
@@ -262,224 +407,338 @@ public class DateTimePicker extends FrameLayout {
      * @param hourOfDay The current hourOfDay
      * @param minute The current minute
      */
-    public void setCurrentDate(int year, int month,
-            int dayOfMonth, int hourOfDay, int 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
         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);
     }
 
     /**
-     * Set current year
+     * 设置当前选择的年份，并更新相关的 UI 控件和监听器。
      *
-     * @param year The current year
+     * @param year 要设置的年份，例如 2025
      */
     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();
     }
 
     /**
-     * Get current month in the year
+     * 获取当前选择的月份。
      *
-     * @return The 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）
      */
     public int getCurrentMonth() {
         return mDate.get(Calendar.MONTH);
     }
 
     /**
-     * Set current month in the year
+     * 设置当前选择的月份，并更新相关的 UI 控件和监听器。
      *
-     * @param month The month in the year
+     * @param month 要设置的月份（0 表示一月，11 表示十二月）
      */
     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();
     }
 
     /**
-     * Get current day of the month
+     * 获取当前选择的日期（即一个月中的第几天）。
      *
-     * @return The day of the month
+     * @return 返回当前 Calendar 对象中的日值（1 ~ 31）
      */
     public int getCurrentDay() {
         return mDate.get(Calendar.DAY_OF_MONTH);
     }
 
+
     /**
-     * Set current day of the month
+     * 设置当前选择的日期（即一个月中的第几天）。
      *
-     * @param dayOfMonth The day of the month
+     * @param dayOfMonth 要设置的具体日期，范围为 1 ~ 31
      */
     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();
     }
 
+
     /**
-     * Get current hour in 24 hour mode, in the range (0~23)
-     * @return The current hour in 24 hour mode
+     * 获取当前小时（24小时制）。
+     *
+     * @return 返回 Calendar 对象中的小时值（0 ~ 23）
      */
     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){
+        if (mIs24HourView) {
+            // 如果是 24 小时视图，直接返回 0~23 的小时值
             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;
             }
         }
     }
 
+
     /**
-     * Set current hour in 24 hour mode, in the range (0~23)
+     * 设置当前小时（24小时制），并根据视图模式更新 UI 显示。
      *
-     * @param hourOfDay
+     * @param hourOfDay 要设置的小时值（0 ~ 23）
      */
     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) {
-                    hourOfDay = HOURS_IN_HALF_DAY;
+                    // 0 点显示为 12 AM
+                    hourOfDay = HOURS_IN_HALF_DAY; // 12
                 }
+                // 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();
     }
 
     /**
-     * Get currentMinute
+     * 获取当前选择的分钟值。
      *
-     * @return The Current Minute
+     * @return 返回 Calendar 对象中的分钟值（0 ~ 59）
      */
     public int getCurrentMinute() {
         return mDate.get(Calendar.MINUTE);
     }
 
+
     /**
-     * Set current 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）
      */
     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();
     }
 
+
     /**
-     * @return true if this is in 24 hour view else false.
+     * 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
      */
     public boolean is24HourView () {
         return mIs24HourView;
     }
 
     /**
-     * Set whether in 24 hour or AM/PM mode.
+     * 设置是否使用 24 小时制显示时间。
      *
-     * @param is24HourView True for 24 hour mode. False for AM/PM mode.
+     * @param is24HourView true 表示使用 24 小时制，false 表示使用 AM/PM 模式
      */
     public void set24HourView(boolean is24HourView) {
         if (mIs24HourView == is24HourView) {
-            return;
+            return; // 如果状态未变，无需处理
         }
+
         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();
-        updateHourControl();
-        setCurrentHour(hour);
-        updateAmPmControl();
+
+        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
     }
 
+
+    /**
+     * 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);
-        mDateSpinner.setDisplayedValues(null);
+        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
+
         for (int i = 0; i < DAYS_IN_ALL_WEEK; ++i) {
             cal.add(Calendar.DAY_OF_YEAR, 1);
             mDateDisplayValues[i] = (String) DateFormat.format("MM.dd EEEE", cal);
         }
-        mDateSpinner.setDisplayedValues(mDateDisplayValues);
-        mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2);
-        mDateSpinner.invalidate();
+
+        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
     }
 
+
+    /**
+     * 更新 AM/PM 选择器的状态和显示。
+     */
     private void updateAmPmControl() {
         if (mIs24HourView) {
-            mAmPmSpinner.setVisibility(View.GONE);
+            mAmPmSpinner.setVisibility(View.GONE); // 24小时制隐藏 AM/PM
         } else {
             int index = mIsAm ? Calendar.AM : Calendar.PM;
-            mAmPmSpinner.setValue(index);
-            mAmPmSpinner.setVisibility(View.VISIBLE);
+            mAmPmSpinner.setValue(index); // 设置当前 AM/PM 状态
+            mAmPmSpinner.setVisibility(View.VISIBLE); // 显示 AM/PM 控件
         }
     }
 
+
+    /**
+     * 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);
-            mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW);
+            mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW); // 0
+            mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW); // 23
         } else {
-            mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW);
-            mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW);
+            mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW); // 1
+            mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW); // 12
         }
     }
 
+
     /**
-     * Set the callback that indicates the 'Set' button has been pressed.
-     * @param callback the callback, if null will do nothing
+     * 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
      */
     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

@@ -29,62 +29,134 @@ 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

@@ -27,17 +27,46 @@ 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();
@@ -45,17 +74,34 @@ 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

@@ -30,11 +30,13 @@ 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;
 
@@ -45,12 +47,14 @@ 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);
@@ -59,6 +63,7 @@ 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);
     }
@@ -68,11 +73,13 @@ 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

@@ -1,17 +1,6 @@
 /*
- * 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.
+ * 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
  */
 
 package net.micode.notes.ui;
@@ -37,15 +26,17 @@ 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";
-    private int mIndex;
-    private int mSelectionStartBeforeDelete;
+    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 SCHEME_TEL = "tel:" ;
-    private static final String SCHEME_HTTP = "http:" ;
-    private static final String SCHEME_EMAIL = "mailto:" ;
+    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
 
+    // 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);
@@ -54,56 +45,59 @@ public class NoteEditText extends EditText {
     }
 
     /**
-     * Call by the {@link NoteEditActivity} to delete or add edit text
+     * 由 NoteEditActivity 调用，用于删除或添加编辑文本
      */
     public interface OnTextViewChangeListener {
         /**
-         * Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens
-         * and the text is null
+         * 当按下删除键且文本为空时，删除当前编辑文本
          */
         void onEditTextDelete(int index, String text);
 
         /**
-         * Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER}
-         * happen
+         * 当按下回车键时，添加新的编辑文本
          */
         void onEditTextEnter(int index, String text);
 
         /**
-         * Hide or show item option when text change
+         * 当文本变化时，隐藏或显示选项菜单项
          */
         void onTextChange(int index, boolean hasText);
     }
 
-    private OnTextViewChangeListener mOnTextViewChangeListener;
+    private OnTextViewChangeListener mOnTextViewChangeListener; // 编辑文本变化监听器
 
+    // 构造函数
     public NoteEditText(Context context) {
         super(context, null);
-        mIndex = 0;
+        mIndex = 0; // 默认索引为 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();
@@ -112,75 +106,84 @@ public class NoteEditText extends EditText {
                 y += getScrollY();
 
                 Layout layout = getLayout();
-                int line = layout.getLineForVertical(y);
-                int off = layout.getOffsetForHorizontal(line, x);
-                Selection.setSelection(getText(), off);
+                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
                 break;
         }
 
-        return super.onTouchEvent(event);
+        return super.onTouchEvent(event); // 调用父类的触摸事件处理方法
     }
 
+    // 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();
+                mSelectionStartBeforeDelete = getSelectionStart(); // 保存删除前的光标起始位置
                 break;
             default:
                 break;
         }
-        return super.onKeyDown(keyCode, event);
+        return super.onKeyDown(keyCode, event); // 调用父类的键盘按下事件处理方法
     }
 
+    // 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) {
-                        mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString());
+                    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
                         return true;
                     }
                 } else {
-                    Log.d(TAG, "OnTextViewChangeListener was not seted");
+                    Log.d(TAG, "未设置编辑文本变化监听器");
                 }
                 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();
-                    String text = getText().subSequence(selectionStart, length()).toString();
-                    setText(getText().subSequence(0, selectionStart));
-                    mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text);
+                    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
                 } else {
-                    Log.d(TAG, "OnTextViewChangeListener was not seted");
+                    Log.d(TAG, "未设置编辑文本变化监听器");
                 }
                 break;
             default:
                 break;
         }
-        return super.onKeyUp(keyCode, event);
+        return super.onKeyUp(keyCode, event); // 调用父类的键盘弹起事件处理方法
     }
 
+    // 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())) {
-                mOnTextViewChangeListener.onTextChange(mIndex, false);
+            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
             } else {
-                mOnTextViewChangeListener.onTextChange(mIndex, true);
+                mOnTextViewChangeListener.onTextChange(mIndex, true); // 通知文本不为空
             }
         }
-        super.onFocusChanged(focused, direction, previouslyFocusedRect);
+        super.onFocusChanged(focused, direction, previouslyFocusedRect); // 调用父类的焦点变化事件处理方法
     }
 
+    // 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();
@@ -188,30 +191,31 @@ 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);
-            if (urls.length == 1) {
+            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
                 int defaultResId = 0;
-                for(String schema: sSchemaActionResMap.keySet()) {
-                    if(urls[0].getURL().indexOf(schema) >= 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) {
                         defaultResId = sSchemaActionResMap.get(schema);
                         break;
                     }
                 }
 
-                if (defaultResId == 0) {
+                if (defaultResId == 0) { // 如果未找到对应的资源 ID，则使用默认资源 ID
                     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) {
-                                // goto a new intent
-                                urls[0].onClick(NoteEditText.this);
+                                urls[0].onClick(NoteEditText.this); // 跳转到对应链接
                                 return true;
                             }
                         });
             }
         }
-        super.onCreateContextMenu(menu);
+        super.onCreateContextMenu(menu); // 调用父类的上下文菜单创建方法
     }
-}
+}

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

@@ -1,17 +1,6 @@
 /*
- * 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.
+ * 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
  */
 
 package net.micode.notes.ui;
@@ -27,72 +16,78 @@ import net.micode.notes.tool.DataUtils;
 
 
 public class NoteItemData {
-    static final String [] PROJECTION = new String [] {
-        NoteColumns.ID,
-        NoteColumns.ALERTED_DATE,
-        NoteColumns.BG_COLOR_ID,
-        NoteColumns.CREATED_DATE,
-        NoteColumns.HAS_ATTACHMENT,
-        NoteColumns.MODIFIED_DATE,
-        NoteColumns.NOTES_COUNT,
-        NoteColumns.PARENT_ID,
-        NoteColumns.SNIPPET,
-        NoteColumns.TYPE,
-        NoteColumns.WIDGET_ID,
-        NoteColumns.WIDGET_TYPE,
+    // 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
     };
 
-    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;
-
+    // 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
     public NoteItemData(Context context, Cursor cursor) {
-        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(
+        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
                 NoteEditActivity.TAG_UNCHECKED, "");
-        mType = cursor.getInt(TYPE_COLUMN);
-        mWidgetId = cursor.getInt(WIDGET_ID_COLUMN);
-        mWidgetType = cursor.getInt(WIDGET_TYPE_COLUMN);
+        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
 
         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)) {
@@ -106,119 +101,143 @@ public class NoteItemData {
         if (mName == null) {
             mName = "";
         }
-        checkPostion(cursor);
+        checkPostion(cursor); // 检查位置信息
     }
 
+    // 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;
-        mIsFirstItem = cursor.isFirst() ? true : false;
-        mIsOnlyOneItem = (cursor.getCount() == 1);
-        mIsMultiNotesFollowingFolder = false;
-        mIsOneNoteFollowingFolder = false;
+        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
 
+        // 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()) {
-                if (cursor.getInt(TYPE_COLUMN) == Notes.TYPE_FOLDER
-                        || cursor.getInt(TYPE_COLUMN) == Notes.TYPE_SYSTEM) {
+            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.getCount() > (position + 1)) {
-                        mIsMultiNotesFollowingFolder = true;
+                        mIsMultiNotesFollowingFolder = true; // 有多个笔记跟随文件夹
                     } else {
-                        mIsOneNoteFollowingFolder = true;
+                        mIsOneNoteFollowingFolder = true; // 有一个笔记跟随文件夹
                     }
                 }
-                if (!cursor.moveToNext()) {
+                if (!cursor.moveToNext()) { // 尝试移回原位置
                     throw new IllegalStateException("cursor move to previous but can't move back");
                 }
             }
         }
     }
 
-    public boolean isOneFollowingFolder() {
-        return mIsOneNoteFollowingFolder;
-    }
-
+    // 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);
+    }
+
+    // 返回是否是通话记录
+    public boolean isCallRecord() {
+        return (mParentId == Notes.ID_CALL_RECORD_FOLDER && !TextUtils.isEmpty(mPhoneNumber));
+    }
+
+    // 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;
     }
 
-    public long getFolderId () {
+    // 返回文件夹 ID
+    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;
     }
 
-    public boolean hasAlert() {
-        return (mAlertDate > 0);
-    }
-
-    public boolean isCallRecord() {
-        return (mParentId == Notes.ID_CALL_RECORD_FOLDER && !TextUtils.isEmpty(mPhoneNumber));
-    }
-
+    // 从游标中获取笔记类型
     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
  *
- *        http://www.apache.org/licenses/LICENSE-2.0
+ *        <url id="d0s4geb67ti966oe1310" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url>
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -79,125 +79,114 @@ 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)";
-
+    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 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);
-        initResources();
+        setContentView(R.layout.note_list); // 设置布局文件为 note_list
+        initResources(); // 初始化资源
 
         /**
-         * Insert an introduction when user firstly use this application
+         * 当用户首次使用此应用时插入介绍
          */
-        setAppInfoFromRawRes();
+        setAppInfoFromRawRes(); // 从原始资源文件中读取介绍信息并创建笔记
     }
 
     @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);
+        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
         } else {
-            super.onActivityResult(requestCode, resultCode, data);
+            super.onActivityResult(requestCode, resultCode, data); // 调用父类的方法
         }
     }
 
     private void setAppInfoFromRawRes() {
-        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
-        if (!sp.getBoolean(PREFERENCE_ADD_INTRODUCTION, false)) {
-            StringBuilder sb = new StringBuilder();
+        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
             InputStream in = null;
             try {
-                 in = getResources().openRawResource(R.raw.introduction);
+                in = getResources().openRawResource(R.raw.introduction); // 打开原始资源文件
                 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);
+                        sb.append(buf, 0, len); // 将读取的内容追加到字符串构建器
                     }
                 } else {
-                    Log.e(TAG, "Read introduction file error");
+                    Log.e(TAG, "读取介绍文件错误");
                     return;
                 }
             } catch (IOException e) {
                 e.printStackTrace();
                 return;
             } finally {
-                if(in != null) {
+                if (in != null) {
                     try {
-                        in.close();
+                        in.close(); // 关闭输入流
                     } 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);
-            note.setWorkingText(sb.toString());
-            if (note.saveNote()) {
-                sp.edit().putBoolean(PREFERENCE_ADD_INTRODUCTION, true).commit();
+            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
             } else {
-                Log.e(TAG, "Save introduction note error");
+                Log.e(TAG, "保存介绍笔记错误");
                 return;
             }
         }
@@ -206,29 +195,28 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     @Override
     protected void onStart() {
         super.onStart();
-        startAsyncNotesListQuery();
+        startAsyncNotesListQuery(); // 开始异步查询笔记列表
     }
 
     private void initResources() {
-        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());
+        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
         mDispatch = false;
         mDispatchY = 0;
         mOriginY = 0;
-        mTitleBar = (TextView) findViewById(R.id.tv_title_bar);
-        mState = ListEditState.NOTE_LIST;
-        mModeCallBack = new ModeCallback();
+        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
     }
 
     private class ModeCallback implements ListView.MultiChoiceModeListener, OnMenuItemClickListener {
@@ -237,85 +225,76 @@ 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);
-            menu.findItem(R.id.delete).setOnMenuItemClickListener(this);
+            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
             mMoveMenu = menu.findItem(R.id.move);
-            if (mFocusNoteDataItem.getParentId() == Notes.ID_CALL_RECORD_FOLDER
-                    || DataUtils.getUserFolderCount(mContentResolver) == 0) {
-                mMoveMenu.setVisible(false);
+            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
             } else {
                 mMoveMenu.setVisible(true);
-                mMoveMenu.setOnMenuItemClickListener(this);
+                mMoveMenu.setOnMenuItemClickListener(this); // 设置菜单项点击监听器
             }
             mActionMode = mode;
-            mNotesListAdapter.setChoiceMode(true);
-            mNotesListView.setLongClickable(false);
-            mAddNewNote.setVisibility(View.GONE);
-
-            View customView = LayoutInflater.from(NotesListActivity.this).inflate(
-                    R.layout.note_list_dropdown_menu, null);
-            mode.setCustomView(customView);
-            mDropDownMenu = new DropdownMenu(NotesListActivity.this,
-                    (Button) customView.findViewById(R.id.selection_menu),
-                    R.menu.note_list_dropdown);
-            mDropDownMenu.setOnDropdownMenuItemClickListener(new PopupMenu.OnMenuItemClickListener(){
+            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() {
                 public boolean onMenuItemClick(MenuItem item) {
-                    mNotesListAdapter.selectAll(!mNotesListAdapter.isAllSelected());
-                    updateMenu();
+                    mNotesListAdapter.selectAll(!mNotesListAdapter.isAllSelected()); // 选择或取消选择所有项
+                    updateMenu(); // 更新菜单
                     return true;
                 }
-
             });
             return true;
         }
 
         private void updateMenu() {
-            int selectedCount = mNotesListAdapter.getSelectedCount();
-            // Update dropdown menu
+            int selectedCount = mNotesListAdapter.getSelectedCount(); // 获取已选择的项数
+            // 更新下拉菜单
             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);
+                    item.setTitle(R.string.menu_deselect_all); // 设置为取消选择全部
                 } else {
                     item.setChecked(false);
-                    item.setTitle(R.string.menu_select_all);
+                    item.setTitle(R.string.menu_select_all); // 设置为选择全部
                 }
             }
         }
 
         public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
-            // TODO Auto-generated method stub
             return false;
         }
 
         public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
-            // TODO Auto-generated method stub
             return false;
         }
 
         public void onDestroyActionMode(ActionMode mode) {
-            mNotesListAdapter.setChoiceMode(false);
-            mNotesListView.setLongClickable(true);
-            mAddNewNote.setVisibility(View.VISIBLE);
+            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
         }
 
         public void finishActionMode() {
-            mActionMode.finish();
+            mActionMode.finish(); // 结束多选模式
         }
 
-        public void onItemCheckedStateChanged(ActionMode mode, int position, long id,
-                boolean checked) {
-            mNotesListAdapter.setCheckedItem(position, checked);
-            updateMenu();
+        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 boolean onMenuItemClick(MenuItem item) {
             if (mNotesListAdapter.getSelectedCount() == 0) {
-                Toast.makeText(NotesListActivity.this, getString(R.string.menu_select_none),
-                        Toast.LENGTH_SHORT).show();
+                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
                 return true;
             }
 
@@ -324,20 +303,17 @@ 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()));
-                    builder.setPositiveButton(android.R.string.ok,
-                                             new DialogInterface.OnClickListener() {
-                                                 public void onClick(DialogInterface dialog,
-                                                         int which) {
-                                                     batchDelete();
-                                                 }
-                                             });
+                    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.setNegativeButton(android.R.string.cancel, null);
                     builder.show();
                     break;
                 case R.id.move:
-                    startQueryDestinationFolders();
+                    startQueryDestinationFolders(); // 开始查询目标文件夹
                     break;
                 default:
                     return false;
@@ -347,36 +323,21 @@ 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);
@@ -385,36 +346,28 @@ 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 {
@@ -426,13 +379,13 @@ 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);
+                    mNotesListAdapter.changeCursor(cursor); // 更改游标以更新列表
                     break;
                 case FOLDER_LIST_QUERY_TOKEN:
                     if (cursor != null && cursor.getCount() > 0) {
-                        showFolderListMenu(cursor);
+                        showFolderListMenu(cursor); // 显示文件夹列表菜单
                     } else {
-                        Log.e(TAG, "Query folder failed");
+                        Log.e(TAG, "查询文件夹失败");
                     }
                     break;
                 default:
@@ -446,17 +399,10 @@ 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));
-                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();
+                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
             }
         });
         builder.show();
@@ -466,26 +412,21 @@ 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);
+        this.startActivityForResult(intent, REQUEST_CODE_NEW_NODE); // 启动新建笔记活动
     }
 
     private void batchDelete() {
         new AsyncTask<Void, Void, HashSet<AppWidgetAttribute>>() {
             protected HashSet<AppWidgetAttribute> doInBackground(Void... unused) {
-                HashSet<AppWidgetAttribute> widgets = mNotesListAdapter.getSelectedWidget();
+                HashSet<AppWidgetAttribute> widgets = mNotesListAdapter.getSelectedWidget(); // 获取选中的小部件属性
                 if (!isSyncMode()) {
-                    // if not synced, delete notes directly
-                    if (DataUtils.batchDeleteNotes(mContentResolver, mNotesListAdapter
-                            .getSelectedItemIds())) {
+                    if (DataUtils.batchDeleteNotes(mContentResolver, mNotesListAdapter.getSelectedItemIds())) { // 批量删除笔记
                     } else {
-                        Log.e(TAG, "Delete notes error, should not happens");
+                        Log.e(TAG, "删除笔记错误，不应该发生");
                     }
                 } else {
-                    // in sync mode, we'll move the deleted note into the trash
-                    // folder
-                    if (!DataUtils.batchMoveToFolder(mContentResolver, mNotesListAdapter
-                            .getSelectedItemIds(), Notes.ID_TRASH_FOLER)) {
-                        Log.e(TAG, "Move notes to trash folder error, should not happens");
+                    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");
                     }
                 }
                 return widgets;
@@ -495,39 +436,34 @@ 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);
+                        if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID && widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) {
+                            updateWidget(widget.widgetId, widget.widgetType); // 更新小部件
                         }
                     }
                 }
-                mModeCallBack.finishActionMode();
+                mModeCallBack.finishActionMode(); // 结束多选模式
             }
         }.execute();
     }
 
     private void deleteFolder(long folderId) {
         if (folderId == Notes.ID_ROOT_FOLDER) {
-            Log.e(TAG, "Wrong folder id, should not happen " + folderId);
+            Log.e(TAG, "错误的文件夹 ID，不应该发生 " + 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()) {
-            // if not synced, delete folder directly
-            DataUtils.batchDeleteNotes(mContentResolver, ids);
+            DataUtils.batchDeleteNotes(mContentResolver, ids); // 批量删除笔记
         } else {
-            // in sync mode, we'll move the deleted folder into the trash folder
-            DataUtils.batchMoveToFolder(mContentResolver, ids, Notes.ID_TRASH_FOLER);
+            DataUtils.batchMoveToFolder(mContentResolver, ids, Notes.ID_TRASH_FOLER); // 批量移动到回收站文件夹
         }
         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);
+                if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID && widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) {
+                    updateWidget(widget.widgetId, widget.widgetType); // 更新小部件
                 }
             }
         }
@@ -537,30 +473,30 @@ 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);
+        this.startActivityForResult(intent, REQUEST_CODE_OPEN_NODE); // 启动查看笔记活动
     }
 
     private void openFolder(NoteItemData data) {
         mCurrentFolderId = data.getId();
-        startAsyncNotesListQuery();
+        startAsyncNotesListQuery(); // 开始异步查询笔记列表
         if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
             mState = ListEditState.CALL_RECORD_FOLDER;
-            mAddNewNote.setVisibility(View.GONE);
+            mAddNewNote.setVisibility(View.GONE); // 隐藏新建笔记按钮
         } else {
             mState = ListEditState.SUB_FOLDER;
         }
         if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
-            mTitleBar.setText(R.string.call_record_folder_name);
+            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
         } else {
-            mTitleBar.setText(data.getSnippet());
+            mTitleBar.setText(data.getSnippet()); // 设置标题栏文本为文件夹名称
         }
-        mTitleBar.setVisibility(View.VISIBLE);
+        mTitleBar.setVisibility(View.VISIBLE); // 显示标题栏
     }
 
     public void onClick(View v) {
         switch (v.getId()) {
             case R.id.btn_new_note:
-                createNewNote();
+                createNewNote(); // 创建新笔记
                 break;
             default:
                 break;
@@ -570,13 +506,13 @@ 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);
+            inputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0); // 显示软键盘
         }
     }
 
     private void hideSoftInput(View view) {
         InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
-        inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
+        inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0); // 隐藏软键盘
     }
 
     private void showCreateOrModifyFolderDialog(final boolean create) {
@@ -586,15 +522,15 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         showSoftInput();
         if (!create) {
             if (mFocusNoteDataItem != null) {
-                etName.setText(mFocusNoteDataItem.getSnippet());
-                builder.setTitle(getString(R.string.menu_folder_change_name));
+                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
             } else {
-                Log.e(TAG, "The long click data item is null");
+                Log.e(TAG, "长按的数据项为空");
                 return;
             }
         } else {
             etName.setText("");
-            builder.setTitle(this.getString(R.string.menu_create_folder));
+            builder.setTitle(this.getString(R.string.menu_create_folder)); // 设置对话框标题为创建文件夹
         }
 
         builder.setPositiveButton(android.R.string.ok, null);
@@ -605,14 +541,13 @@ 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();
+                    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
                     etName.setSelection(0, etName.length());
                     return;
                 }
@@ -622,16 +557,13 @@ 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())
-                        });
+                        mContentResolver.update(Notes.CONTENT_NOTE_URI, values, NoteColumns.ID + "=?", new String[] { String.valueOf(mFocusNoteDataItem.getId()) }); // 更新文件夹名称
                     }
                 } 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);
+                    mContentResolver.insert(Notes.CONTENT_NOTE_URI, values); // 插入新文件夹
                 }
                 dialog.dismiss();
             }
@@ -640,13 +572,8 @@ 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) {
@@ -658,8 +585,6 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
             }
 
             public void afterTextChanged(Editable s) {
-                // TODO Auto-generated method stub
-
             }
         });
     }
@@ -670,18 +595,18 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
             case SUB_FOLDER:
                 mCurrentFolderId = Notes.ID_ROOT_FOLDER;
                 mState = ListEditState.NOTE_LIST;
-                startAsyncNotesListQuery();
-                mTitleBar.setVisibility(View.GONE);
+                startAsyncNotesListQuery(); // 返回根文件夹
+                mTitleBar.setVisibility(View.GONE); // 隐藏标题栏
                 break;
             case CALL_RECORD_FOLDER:
                 mCurrentFolderId = Notes.ID_ROOT_FOLDER;
                 mState = ListEditState.NOTE_LIST;
-                mAddNewNote.setVisibility(View.VISIBLE);
-                mTitleBar.setVisibility(View.GONE);
-                startAsyncNotesListQuery();
+                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
                 break;
             case NOTE_LIST:
-                super.onBackPressed();
+                super.onBackPressed(); // 调用父类的返回键处理方法
                 break;
             default:
                 break;
@@ -695,13 +620,11 @@ 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, "Unspported widget type");
+            Log.e(TAG, "不支持的小部件类型");
             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);
@@ -710,10 +633,10 @@ 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());
-                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);
+                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
             }
         }
     };
@@ -721,7 +644,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     @Override
     public void onContextMenuClosed(Menu menu) {
         if (mNotesListView != null) {
-            mNotesListView.setOnCreateContextMenuListener(null);
+            mNotesListView.setOnCreateContextMenuListener(null); // 移除上下文菜单创建监听器
         }
         super.onContextMenuClosed(menu);
     }
@@ -729,29 +652,28 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     @Override
     public boolean onContextItemSelected(MenuItem item) {
         if (mFocusNoteDataItem == null) {
-            Log.e(TAG, "The long click data item is null");
+            Log.e(TAG, "长按的数据项为空");
             return false;
         }
         switch (item.getItemId()) {
             case MENU_FOLDER_VIEW:
-                openFolder(mFocusNoteDataItem);
+                openFolder(mFocusNoteDataItem); // 打开文件夹
                 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));
-                builder.setPositiveButton(android.R.string.ok,
-                        new DialogInterface.OnClickListener() {
-                            public void onClick(DialogInterface dialog, int which) {
-                                deleteFolder(mFocusNoteDataItem.getId());
-                            }
-                        });
+                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.setNegativeButton(android.R.string.cancel, null);
                 builder.show();
                 break;
             case MENU_FOLDER_CHANGE_NAME:
-                showCreateOrModifyFolderDialog(false);
+                showCreateOrModifyFolderDialog(false); // 显示创建或修改文件夹对话框
                 break;
             default:
                 break;
@@ -765,15 +687,13 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         menu.clear();
         if (mState == ListEditState.NOTE_LIST) {
             getMenuInflater().inflate(R.menu.note_list, menu);
-            // set sync or sync_cancel
-            menu.findItem(R.id.menu_sync).setTitle(
-                    GTaskSyncService.isSyncing() ? R.string.menu_sync_cancel : R.string.menu_sync);
+            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
         } else if (mState == ListEditState.SUB_FOLDER) {
             getMenuInflater().inflate(R.menu.sub_folder, menu);
         } else if (mState == ListEditState.CALL_RECORD_FOLDER) {
             getMenuInflater().inflate(R.menu.call_record_folder, menu);
         } else {
-            Log.e(TAG, "Wrong state:" + mState);
+            Log.e(TAG, "错误的状态：" + mState);
         }
         return true;
     }
@@ -781,34 +701,29 @@ 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);
+            case R.id.menu_new_folder:
+                showCreateOrModifyFolderDialog(true); // 显示创建文件夹对话框
                 break;
-            }
-            case R.id.menu_export_text: {
-                exportNoteToText();
+            case R.id.menu_export_text:
+                exportNoteToText(); // 导出笔记为文本文件
                 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);
+                        GTaskSyncService.startSync(this); // 开始同步
                     } else {
-                        GTaskSyncService.cancelSync(this);
+                        GTaskSyncService.cancelSync(this); // 取消同步
                     }
                 } else {
-                    startPreferenceActivity();
+                    startPreferenceActivity(); // 启动偏好设置活动
                 }
                 break;
-            }
-            case R.id.menu_setting: {
-                startPreferenceActivity();
+            case R.id.menu_setting:
+                startPreferenceActivity(); // 启动偏好设置活动
                 break;
-            }
-            case R.id.menu_new_note: {
-                createNewNote();
+            case R.id.menu_new_note:
+                createNewNote(); // 创建新笔记
                 break;
-            }
             case R.id.menu_search:
                 onSearchRequested();
                 break;
@@ -820,7 +735,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
 
     @Override
     public boolean onSearchRequested() {
-        startSearch(null, false, null /* appData */, false);
+        startSearch(null, false, null, false);
         return true;
     }
 
@@ -830,34 +745,27 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
 
             @Override
             protected Integer doInBackground(Void... unused) {
-                return backup.exportToText();
+                return backup.exportToText(); // 导出笔记为文本文件
             }
 
             @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();
                 }
@@ -867,13 +775,13 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     }
 
     private boolean isSyncMode() {
-        return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0;
+        return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0; // 判断是否为同步模式
     }
 
     private void startPreferenceActivity() {
         Activity from = getParent() != null ? getParent() : this;
         Intent intent = new Intent(from, NotesPreferenceActivity.class);
-        from.startActivityIfNeeded(intent, -1);
+        from.startActivityIfNeeded(intent, -1); // 启动偏好设置活动
     }
 
     private class OnListItemClickListener implements OnItemClickListener {
@@ -884,29 +792,27 @@ 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));
+                        mModeCallBack.onItemCheckedStateChanged(null, position, id, !mNotesListAdapter.isSelectedItem(position)); // 切换选中状态
                     }
                     return;
                 }
 
                 switch (mState) {
                     case NOTE_LIST:
-                        if (item.getType() == Notes.TYPE_FOLDER
-                                || item.getType() == Notes.TYPE_SYSTEM) {
-                            openFolder(item);
+                        if (item.getType() == Notes.TYPE_FOLDER || item.getType() == Notes.TYPE_SYSTEM) {
+                            openFolder(item); // 打开文件夹
                         } else if (item.getType() == Notes.TYPE_NOTE) {
-                            openNode(item);
+                            openNode(item); // 打开笔记
                         } else {
-                            Log.e(TAG, "Wrong note type in NOTE_LIST");
+                            Log.e(TAG, "笔记列表中的错误笔记类型");
                         }
                         break;
                     case SUB_FOLDER:
                     case CALL_RECORD_FOLDER:
                         if (item.getType() == Notes.TYPE_NOTE) {
-                            openNode(item);
+                            openNode(item); // 打开笔记
                         } else {
-                            Log.e(TAG, "Wrong note type in SUB_FOLDER");
+                            Log.e(TAG, "子文件夹中的错误笔记类型");
                         }
                         break;
                     default:
@@ -919,20 +825,8 @@ 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) {
@@ -940,15 +834,15 @@ 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);
-                    mNotesListView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
+                    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
                 } else {
-                    Log.e(TAG, "startActionMode fails");
+                    Log.e(TAG, "进入多选模式失败");
                 }
             } else if (mFocusNoteDataItem.getType() == Notes.TYPE_FOLDER) {
-                mNotesListView.setOnCreateContextMenuListener(mFolderOnCreateContextMenuListener);
+                mNotesListView.setOnCreateContextMenuListener(mFolderOnCreateContextMenuListener); // 设置上下文菜单创建监听器
             }
         }
         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
  *
- *        http://www.apache.org/licenses/LICENSE-2.0
+ *        <url id="d0s4mbuf5ku6itl3bdkg" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url> 
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -38,11 +38,13 @@ 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>();
@@ -52,43 +54,47 @@ public class NotesListAdapter extends CursorAdapter {
 
     @Override
     public View newView(Context context, Cursor cursor, ViewGroup parent) {
-        return new NotesListItem(context);
+        return new NotesListItem(context); // 创建新的笔记列表项视图
     }
 
     @Override
     public void bindView(View view, Context context, Cursor cursor) {
         if (view instanceof NotesListItem) {
-            NoteItemData itemData = new NoteItemData(context, cursor);
-            ((NotesListItem) view).bind(context, itemData, mChoiceMode,
-                    isSelectedItem(cursor.getPosition()));
+            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
         }
     }
 
+    // 设置选中项
     public void setCheckedItem(final int position, final boolean checked) {
-        mSelectedIndex.put(position, checked);
-        notifyDataSetChanged();
+        mSelectedIndex.put(position, checked); // 更新选中状态
+        notifyDataSetChanged(); // 通知数据已更改
     }
 
+    // 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();
+        mSelectedIndex.clear(); // 清除选中状态
         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) {
-                    setCheckedItem(i, checked);
+                if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) { // 如果是笔记类型
+                    setCheckedItem(i, checked); // 设置选中状态
                 }
             }
         }
     }
 
+    // 获取选中的项 ID 集合
     public HashSet<Long> getSelectedItemIds() {
         HashSet<Long> itemSet = new HashSet<Long>();
         for (Integer position : mSelectedIndex.keySet()) {
@@ -97,7 +103,7 @@ public class NotesListAdapter extends CursorAdapter {
                 if (id == Notes.ID_ROOT_FOLDER) {
                     Log.d(TAG, "Wrong item id, should not happen");
                 } else {
-                    itemSet.add(id);
+                    itemSet.add(id); // 添加选中的项 ID
                 }
             }
         }
@@ -105,6 +111,7 @@ 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()) {
@@ -113,12 +120,9 @@ public class NotesListAdapter extends CursorAdapter {
                 if (c != null) {
                     AppWidgetAttribute widget = new AppWidgetAttribute();
                     NoteItemData item = new NoteItemData(mContext, c);
-                    widget.widgetId = item.getWidgetId();
-                    widget.widgetType = item.getWidgetType();
-                    itemSet.add(widget);
-                    /**
-                     * Don't close cursor here, only the adapter could close it
-                     */
+                    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
                 } else {
                     Log.e(TAG, "Invalid cursor");
                     return null;
@@ -128,6 +132,7 @@ 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) {
@@ -143,11 +148,13 @@ 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);
+        return (checkedCount != 0 && checkedCount == mNotesCount); // 如果选中数等于笔记数，则全部选中
     }
 
+    // 判断项是否被选中
     public boolean isSelectedItem(final int position) {
         if (null == mSelectedIndex.get(position)) {
             return false;
@@ -158,21 +165,22 @@ public class NotesListAdapter extends CursorAdapter {
     @Override
     protected void onContentChanged() {
         super.onContentChanged();
-        calcNotesCount();
+        calcNotesCount(); // 计算笔记数量
     }
 
     @Override
     public void changeCursor(Cursor cursor) {
         super.changeCursor(cursor);
-        calcNotesCount();
+        calcNotesCount(); // 更改游标并计算笔记数量
     }
 
+    // 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) {
+                if (NoteItemData.getNoteType(c) == Notes.TYPE_NOTE) { // 如果是笔记类型
                     mNotesCount++;
                 }
             } else {
@@ -181,4 +189,4 @@ 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
  *
- *        http://www.apache.org/licenses/LICENSE-2.0
+ *        <url id="d0s4nev37oq8u4isp1r0" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url>
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -31,77 +31,86 @@ import net.micode.notes.tool.ResourceParser.NoteItemBgResources;
 
 
 public class NotesListItem extends LinearLayout {
-    private ImageView mAlert;
-    private TextView mTitle;
-    private TextView mTime;
-    private TextView mCallName;
-    private NoteItemData mItemData;
-    private CheckBox mCheckBox;
+    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
 
     public NotesListItem(Context context) {
         super(context);
-        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);
+        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
     }
 
     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);
+            mCheckBox.setVisibility(View.GONE); // 隐藏复选框
         }
 
-        mItemData = data;
+        mItemData = data; // 保存笔记项数据
+        // 处理通话记录文件夹
         if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
-            mCallName.setVisibility(View.GONE);
-            mAlert.setVisibility(View.VISIBLE);
-            mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
-            mTitle.setText(context.getString(R.string.call_record_folder_name)
-                    + context.getString(R.string.format_folder_files_count, data.getNotesCount()));
-            mAlert.setImageResource(R.drawable.call_record);
-        } else if (data.getParentId() == Notes.ID_CALL_RECORD_FOLDER) {
-            mCallName.setVisibility(View.VISIBLE);
-            mCallName.setText(data.getCallName());
-            mTitle.setTextAppearance(context,R.style.TextAppearanceSecondaryItem);
-            mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
+            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
             if (data.hasAlert()) {
                 mAlert.setImageResource(R.drawable.clock);
                 mAlert.setVisibility(View.VISIBLE);
             } else {
-                mAlert.setVisibility(View.GONE);
+                mAlert.setVisibility(View.GONE); // 隐藏提醒图标
             }
-        } else {
-            mCallName.setVisibility(View.GONE);
-            mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
-
+        }
+        // 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
             if (data.getType() == Notes.TYPE_FOLDER) {
-                mTitle.setText(data.getSnippet()
-                        + context.getString(R.string.format_folder_files_count,
-                                data.getNotesCount()));
-                mAlert.setVisibility(View.GONE);
-            } else {
-                mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
+                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
                 if (data.hasAlert()) {
                     mAlert.setImageResource(R.drawable.clock);
                     mAlert.setVisibility(View.VISIBLE);
                 } else {
-                    mAlert.setVisibility(View.GONE);
+                    mAlert.setVisibility(View.GONE); // 隐藏提醒图标
                 }
             }
         }
-        mTime.setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate()));
+        mTime.setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate())); // 设置时间文本
 
-        setBackground(data);
+        setBackground(data); // 设置背景
     }
 
     private void setBackground(NoteItemData data) {
-        int id = data.getBgColorId();
+        int id = data.getBgColorId(); // 获取背景颜色 ID
+        // 如果是笔记类型
         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()) {
@@ -111,12 +120,14 @@ public class NotesListItem extends LinearLayout {
             } else {
                 setBackgroundResource(NoteItemBgResources.getNoteBgNormalRes(id));
             }
-        } else {
+        }
+        // 如果是文件夹类型
+        else {
             setBackgroundResource(NoteItemBgResources.getFolderBgRes());
         }
     }
 
     public NoteItemData getItemData() {
-        return mItemData;
+        return mItemData; // 返回笔记项数据
     }
-}
+}

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
  *
- *        http://www.apache.org/licenses/LICENSE-2.0
+ *        <url id="d0s4q1f37oq8u4itada0" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url>
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -49,41 +49,48 @@ 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);
 
-        /* using the app icon for navigation */
+        // 设置操作栏回家按钮可用
         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);
 
-        mOriAccounts = null;
+        // 加载设置头部布局并添加到列表视图
         View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);
         getListView().addHeaderView(header, null, true);
     }
@@ -92,20 +99,23 @@ public class NotesPreferenceActivity extends PreferenceActivity {
     protected void onResume() {
         super.onResume();
 
-        // need to set sync account automatically if user has added a new
-        // account
+        // 如果用户添加了新账户，则自动设置同步账户
         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;
                     }
@@ -113,53 +123,67 @@ 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)) {
-                        // the first time to set account
+                        // 显示选择账户对话框
                         showSelectAccountAlertDialog();
                     } else {
-                        // if the account has already been set, we need to promp
-                        // user about the risk
+                        // 显示更改账户确认对话框
                         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);
 
-        // set button state
+        // 设置同步按钮状态
         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) {
@@ -167,6 +191,7 @@ 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) {
@@ -174,13 +199,16 @@ public class NotesPreferenceActivity extends PreferenceActivity {
                 }
             });
         }
+        // 设置同步按钮可用状态
         syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));
 
-        // set last sync time
+        // 设置最后同步时间文本视图
         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,
@@ -193,29 +221,35 @@ 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;
@@ -230,6 +264,7 @@ 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();
@@ -237,6 +272,7 @@ 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);
 
@@ -245,18 +281,19 @@ 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,
@@ -265,6 +302,7 @@ 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),
@@ -283,13 +321,16 @@ 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) {
@@ -299,10 +340,10 @@ public class NotesPreferenceActivity extends PreferenceActivity {
             }
             editor.commit();
 
-            // clean up last sync time
+            // 清除最后同步时间
             setLastSyncTime(this, 0);
 
-            // clean up local gtask related info
+            // 清除本地与同步相关的数据
             new Thread(new Runnable() {
                 public void run() {
                     ContentValues values = new ContentValues();
@@ -312,13 +353,16 @@ 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)) {
@@ -329,7 +373,7 @@ public class NotesPreferenceActivity extends PreferenceActivity {
         }
         editor.commit();
 
-        // clean up local gtask related info
+        // 清除本地与同步相关的数据
         new Thread(new Runnable() {
             public void run() {
                 ContentValues values = new ContentValues();
@@ -340,43 +384,44 @@ 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);
@@ -385,4 +430,4 @@ 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
  *
- *        http://www.apache.org/licenses/LICENSE-2.0
+ *        <url id="d0s4va13om1vt58e9vr0" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url> 
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -15,6 +15,7 @@
  */
 
 package net.micode.notes.widget;
+
 import android.app.PendingIntent;
 import android.appwidget.AppWidgetManager;
 import android.appwidget.AppWidgetProvider;
@@ -33,30 +34,34 @@ import net.micode.notes.ui.NoteEditActivity;
 import net.micode.notes.ui.NotesListActivity;
 
 public abstract class NoteWidgetProvider extends AppWidgetProvider {
-    public static final String [] PROJECTION = new String [] {
-        NoteColumns.ID,
-        NoteColumns.BG_COLOR_ID,
-        NoteColumns.SNIPPET
+    // 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 int COLUMN_ID           = 0;
-    public static final int COLUMN_BG_COLOR_ID  = 1;
-    public static final int COLUMN_SNIPPET      = 2;
+    // 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;
 
-    private static final String TAG = "NoteWidgetProvider";
+    private static final String TAG = "NoteWidgetProvider"; // 日志标签
 
     @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,
@@ -65,17 +70,19 @@ 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);
-                String snippet = "";
-                Intent intent = new Intent(context, NoteEditActivity.class);
+                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
                 intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
                 intent.putExtra(Notes.INTENT_EXTRA_WIDGET_ID, appWidgetIds[i]);
                 intent.putExtra(Notes.INTENT_EXTRA_WIDGET_TYPE, getWidgetType());
@@ -87,8 +94,8 @@ public abstract class NoteWidgetProvider extends AppWidgetProvider {
                         c.close();
                         return;
                     }
-                    snippet = c.getString(COLUMN_SNIPPET);
-                    bgId = c.getInt(COLUMN_BG_COLOR_ID);
+                    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
                     intent.putExtra(Intent.EXTRA_UID, c.getLong(COLUMN_ID));
                     intent.setAction(Intent.ACTION_VIEW);
                 } else {
@@ -100,33 +107,31 @@ public abstract class NoteWidgetProvider extends AppWidgetProvider {
                     c.close();
                 }
 
-                RemoteViews rv = new RemoteViews(context.getPackageName(), getLayoutId());
-                rv.setImageViewResource(R.id.widget_bg_image, getBgResourceId(bgId));
-                intent.putExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, bgId);
-                /**
-                 * Generate the pending intent to start host for the widget
-                 */
+                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
                 PendingIntent pendingIntent = null;
                 if (privacyMode) {
-                    rv.setTextViewText(R.id.widget_text,
-                            context.getString(R.string.widget_under_visit_mode));
-                    pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], new Intent(
-                            context, NotesListActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
+                    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);
                 } else {
-                    rv.setTextViewText(R.id.widget_text, snippet);
-                    pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], intent,
-                            PendingIntent.FLAG_UPDATE_CURRENT);
+                    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.setOnClickPendingIntent(R.id.widget_text, pendingIntent);
-                appWidgetManager.updateAppWidget(appWidgetIds[i], rv);
+                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
             }
         }
     }
 
+    // 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
  *
- *        http://www.apache.org/licenses/LICENSE-2.0
+ *        <url id="d0s510qj4egu9ar0mmmg" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url> 
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -25,23 +25,27 @@ 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);
+        super.update(context, appWidgetManager, appWidgetIds); // 调用基类的更新方法
     }
 
+    // 获取小部件的布局资源 ID
     @Override
     protected int getLayoutId() {
-        return R.layout.widget_2x;
+        return R.layout.widget_2x; // 返回 2x2 小部件的布局资源 ID
     }
 
+    // 获取背景颜色资源 ID
     @Override
     protected int getBgResourceId(int bgId) {
-        return ResourceParser.WidgetBgResources.getWidget2xBgResource(bgId);
+        return ResourceParser.WidgetBgResources.getWidget2xBgResource(bgId); // 获取 2x2 小部件的背景颜色资源 ID
     }
 
+    // 获取小部件类型
     @Override
     protected int getWidgetType() {
-        return Notes.TYPE_WIDGET_2X;
+        return Notes.TYPE_WIDGET_2X; // 返回 2x2 小部件的类型
     }
-}
+}

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
  *
- *        http://www.apache.org/licenses/LICENSE-2.0
+ *        <url id="d0s5240u8ld6ib5i11c0" type="url" status="parsed" title="Apache License, Version 2.0" wc="10467">http://www.apache.org/licenses/LICENSE-2.0</url> 
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -25,22 +25,27 @@ 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);
+        super.update(context, appWidgetManager, appWidgetIds); // 调用基类的更新方法
     }
 
+    // 获取小部件的布局资源 ID
+    @Override
     protected int getLayoutId() {
-        return R.layout.widget_4x;
+        return R.layout.widget_4x; // 返回 4x4 小部件的布局资源 ID
     }
 
+    // 获取背景颜色资源 ID
     @Override
     protected int getBgResourceId(int bgId) {
-        return ResourceParser.WidgetBgResources.getWidget4xBgResource(bgId);
+        return ResourceParser.WidgetBgResources.getWidget4xBgResource(bgId); // 获取 4x4 小部件的背景颜色资源 ID
     }
 
+    // 获取小部件类型
     @Override
     protected int getWidgetType() {
-        return Notes.TYPE_WIDGET_4X;
+        return Notes.TYPE_WIDGET_4X; // 返回 4x4 小部件的类型
     }
-}
+}

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

@@ -13,9 +13,14 @@
  * 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;