更新ui包注释

src/Notes-master3/app/src/main/java/net/micode/notes/ui/AlarmAlertActivity.java

@@ -20,14 +20,14 @@ import android.app.Activity;
 import android.app.AlertDialog;
 import android.content.Context;
 import android.content.DialogInterface;
-import android.content.DialogInterface.OnClickListener;
+import android.content.DialogInterface.OnClickListener;//监听事件功能，点击就会实现相应功能
-import android.content.DialogInterface.OnDismissListener;
+import android.content.DialogInterface.OnDismissListener;//该方法将在关闭对话框时调用
 import android.content.Intent;
 import android.media.AudioManager;
 import android.media.MediaPlayer;
 import android.media.RingtoneManager;
 import android.net.Uri;
-import android.os.Bundle;
+import android.os.Bundle;//用于传递数据
 import android.os.PowerManager;
 import android.provider.Settings;
 import android.view.Window;
@@ -39,7 +39,9 @@ import net.micode.notes.tool.DataUtils;
 
 import java.io.IOException;
 
-
+/**
+ * 功能：实现闹铃提醒界面
+ */
 public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener {
     private long mNoteId;
     private String mSnippet;
@@ -54,6 +56,9 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
         final Window win = getWindow();
         win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
 
+        /*
+        判断闹钟启动时屏幕是否点亮，若未点亮，激活闹钟时开启手机屏幕
+        */
         if (!isScreenOn()) {
             win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
                     | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
@@ -76,21 +81,23 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
 
         mPlayer = new MediaPlayer();
         if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
-            showActionDialog();
+            showActionDialog();//弹出对话框
-            playAlarmSound();
+            playAlarmSound();//闹钟提示音触发
         } else {
-            finish();
+            finish();//完成闹钟动作
         }
     }
 
+    /*判断屏幕是否处于锁定状态 */
     private boolean isScreenOn() {
         PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
         return pm.isScreenOn();
     }
 
+    /*播放闹钟提示音 */
     private void playAlarmSound() {
         Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);
-
+        //调用系统铃声管理获得闹钟提示音
         int silentModeStreams = Settings.System.getInt(getContentResolver(),
                 Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
 
@@ -100,10 +107,10 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
             mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
         }
         try {
-            mPlayer.setDataSource(this, url);
+            mPlayer.setDataSource(this, url);//设置铃声数据来源
             mPlayer.prepare();
-            mPlayer.setLooping(true);
+            mPlayer.setLooping(true);//循环播放
-            mPlayer.start();
+            mPlayer.start();//开始播放
         } catch (IllegalArgumentException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
@@ -116,20 +123,23 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
         } catch (IOException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
-        }
+        }//异常处理
     }
 
+    /*设置对话框 */
     private void showActionDialog() {
         AlertDialog.Builder dialog = new AlertDialog.Builder(this);
-        dialog.setTitle(R.string.app_name);
+        dialog.setTitle(R.string.app_name);//对话框标题
-        dialog.setMessage(mSnippet);
+        dialog.setMessage(mSnippet);//对话框内容
-        dialog.setPositiveButton(R.string.notealert_ok, this);
+        dialog.setPositiveButton(R.string.notealert_ok, this);//“是”按钮
+        //“否”按钮
         if (isScreenOn()) {
             dialog.setNegativeButton(R.string.notealert_enter, this);
         }
         dialog.show().setOnDismissListener(this);
     }
 
+    /*判断点击操作 */
     public void onClick(DialogInterface dialog, int which) {
         switch (which) {
             case DialogInterface.BUTTON_NEGATIVE:
@@ -143,11 +153,13 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
         }
     }
 
+    /*忽略闹钟*/
     public void onDismiss(DialogInterface dialog) {
-        stopAlarmSound();
+        stopAlarmSound();/*停止播放 */
         finish();
     }
 
+    /*停止播放 */
     private void stopAlarmSound() {
         if (mPlayer != null) {
             mPlayer.stop();

src/Notes-master3/app/src/main/java/net/micode/notes/ui/AlarmInitReceiver.java

@@ -27,9 +27,12 @@ import android.database.Cursor;
 import net.micode.notes.data.Notes;
 import net.micode.notes.data.Notes.NoteColumns;
 
-
+/**
+ * 功能：闹铃提醒启动消息接收器
+ */
 public class AlarmInitReceiver extends BroadcastReceiver {
 
+    /*操作数据库调用ID与闹钟时间 */
     private static final String [] PROJECTION = new String [] {
         NoteColumns.ID,
         NoteColumns.ALERTED_DATE
@@ -39,6 +42,7 @@ public class AlarmInitReceiver extends BroadcastReceiver {
     private static final int COLUMN_ALERTED_DATE      = 1;
 
     @Override
+    /*获取当前时间 */
     public void onReceive(Context context, Intent intent) {
         long currentDate = System.currentTimeMillis();
         Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
@@ -60,6 +64,6 @@ public class AlarmInitReceiver extends BroadcastReceiver {
                 } while (c.moveToNext());
             }
             c.close();
-        }
+        }//根据数据库中的闹钟时间创建一个闹钟机制
     }
 }

src/Notes-master3/app/src/main/java/net/micode/notes/ui/AlarmReceiver.java

@@ -20,11 +20,14 @@ import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 
+/**
+ * 闹钟提醒接收器
+ */
 public class AlarmReceiver extends BroadcastReceiver {
     @Override
     public void onReceive(Context context, Intent intent) {
-        intent.setClass(context, AlarmAlertActivity.class);
+        intent.setClass(context, AlarmAlertActivity.class);//启动AlarmAlertActivity
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        context.startActivity(intent);
+        context.startActivity(intent);//创建一个栈并将新的activity装入其中
     }
 }

src/Notes-master3/app/src/main/java/net/micode/notes/ui/DateTimePicker.java

@@ -28,6 +28,9 @@ import android.view.View;
 import android.widget.FrameLayout;
 import android.widget.NumberPicker;
 
+/**
+ *设置提醒时间的部件
+ */
 public class DateTimePicker extends FrameLayout {
 
     private static final boolean DEFAULT_ENABLE_STATE = true;
@@ -46,11 +49,13 @@ public class DateTimePicker extends FrameLayout {
     private static final int AMPM_SPINNER_MIN_VAL = 0;
     private static final int AMPM_SPINNER_MAX_VAL = 1;
 
+    //四个设置闹钟时间所需的变量
     private final NumberPicker mDateSpinner;
     private final NumberPicker mHourSpinner;
     private final NumberPicker mMinuteSpinner;
     private final NumberPicker mAmPmSpinner;
-    private Calendar mDate;
+
+    private Calendar mDate;//用于操作时间
 
     private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];
 
@@ -64,6 +69,7 @@ public class DateTimePicker extends FrameLayout {
 
     private OnDateTimeChangedListener mOnDateTimeChangedListener;
 
+    /*对日期的监听 */
     private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() {
         @Override
         public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
@@ -73,6 +79,7 @@ public class DateTimePicker extends FrameLayout {
         }
     };
 
+    /*对小时的监听 */
     private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() {
         @Override
         public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
@@ -83,26 +90,27 @@ public class DateTimePicker extends FrameLayout {
                     cal.setTimeInMillis(mDate.getTimeInMillis());
                     cal.add(Calendar.DAY_OF_YEAR, 1);
                     isDateChanged = true;
+                    //对于12小时制时，晚上11点和12点交替时对日期的更改
                 } else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
                     cal.setTimeInMillis(mDate.getTimeInMillis());
                     cal.add(Calendar.DAY_OF_YEAR, -1);
                     isDateChanged = true;
-                }
+                }//对于12小时制时，凌晨11点和12点交替时对日期的更改
                 if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY ||
                         oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
                     mIsAm = !mIsAm;
                     updateAmPmControl();
-                }
+                }//对于12小时制时，中午11点和12点交替时对AM和PM的更改
             } else {
                 if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) {
                     cal.setTimeInMillis(mDate.getTimeInMillis());
                     cal.add(Calendar.DAY_OF_YEAR, 1);
-                    isDateChanged = true;
+                    isDateChanged = true;//对于24小时制时，晚上11点和12点交替时对日期的更改
                 } else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) {
                     cal.setTimeInMillis(mDate.getTimeInMillis());
                     cal.add(Calendar.DAY_OF_YEAR, -1);
                     isDateChanged = true;
-                }
+                }//对于12小时制时，凌晨11点和12点交替时对日期的更改
             }
             int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY);
             mDate.set(Calendar.HOUR_OF_DAY, newHour);
@@ -117,15 +125,18 @@ public class DateTimePicker extends FrameLayout {
 
     private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() {
         @Override
+        /*对分钟的监听 */
         public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
             int minValue = mMinuteSpinner.getMinValue();
             int maxValue = mMinuteSpinner.getMaxValue();
-            int offset = 0;
+            int offset = 0;//判断小时是否改变的记录器
             if (oldVal == maxValue && newVal == minValue) {
                 offset += 1;
             } else if (oldVal == minValue && newVal == maxValue) {
                 offset -= 1;
             }
+            //如果原值为59，新值为0，则offset加1
+            //如果原值为0，新值为59，则offset减1
             if (offset != 0) {
                 mDate.add(Calendar.HOUR_OF_DAY, offset);
                 mHourSpinner.setValue(getCurrentHour());
@@ -144,6 +155,7 @@ public class DateTimePicker extends FrameLayout {
         }
     };
 
+    /*对AM和PM的监听 */
     private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() {
         @Override
         public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
@@ -163,10 +175,12 @@ public class DateTimePicker extends FrameLayout {
                 int dayOfMonth, int hourOfDay, int minute);
     }
 
+    /*访问数据库获取当前时间*/
     public DateTimePicker(Context context) {
         this(context, System.currentTimeMillis());
     }
 
+    /*转化上一个函数获取的时间格式 */
     public DateTimePicker(Context context, long date) {
         this(context, date, DateFormat.is24HourFormat(context));
     }
@@ -262,6 +276,7 @@ public class DateTimePicker extends FrameLayout {
      * @param hourOfDay The current hourOfDay
      * @param minute The current minute
      */
+    /*设置当前日期 */
     public void setCurrentDate(int year, int month,
             int dayOfMonth, int hourOfDay, int minute) {
         setCurrentYear(year);
@@ -434,6 +449,7 @@ public class DateTimePicker extends FrameLayout {
         updateAmPmControl();
     }
 
+    /*关于判定星期几的算法 */
     private void updateDateControl() {
         Calendar cal = Calendar.getInstance();
         cal.setTimeInMillis(mDate.getTimeInMillis());
@@ -448,6 +464,7 @@ public class DateTimePicker extends FrameLayout {
         mDateSpinner.invalidate();
     }
 
+    /*对于判定AM与PM的算法 */
     private void updateAmPmControl() {
         if (mIs24HourView) {
             mAmPmSpinner.setVisibility(View.GONE);
@@ -458,6 +475,7 @@ public class DateTimePicker extends FrameLayout {
         }
     }
 
+    /*对于小时的算法 */
     private void updateHourControl() {
         if (mIs24HourView) {
             mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW);

src/Notes-master3/app/src/main/java/net/micode/notes/ui/DateTimePickerDialog.java

@@ -1,19 +1,3 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
  
 import java.util.Calendar;
@@ -29,11 +13,17 @@ import android.content.DialogInterface.OnClickListener;
 import android.text.format.DateFormat;
 import android.text.format.DateUtils;
 
+/**
+ * 实现设置提醒时间的对话框
+ */
 public class DateTimePickerDialog extends AlertDialog implements OnClickListener {
-
+    //创建一个Calendar类型的变量 mDate，方便时间的操作
     private Calendar mDate = Calendar.getInstance();
     private boolean mIs24HourView;
+    //声明一个时间日期滚动选择控件 mOnDateTimeSetListener
     private OnDateTimeSetListener mOnDateTimeSetListener;
+    //DateTimePicker控件，控件一般用于让用户可以从日期列表中选择单个值。
+    //运行时，单击控件边上的下拉箭头，会显示为两个部分：一个下拉列表，一个用于选择日期的
     private DateTimePicker mDateTimePicker;
  
     public interface OnDateTimeSetListener {
@@ -41,9 +31,12 @@ public class DateTimePickerDialog extends AlertDialog implements OnClickListener
     }
  
     public DateTimePickerDialog(Context context, long date) {
+    	//对该界面对话框的实例化
         super(context);
+        //对数据库的操作
         mDateTimePicker = new DateTimePicker(context);
         setView(mDateTimePicker);
+        //添加一个子视图
         mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() {
             public void onDateTimeChanged(DateTimePicker view, int year, int month,
                     int dayOfMonth, int hourOfDay, int minute) {
@@ -52,15 +45,16 @@ public class DateTimePickerDialog extends AlertDialog implements OnClickListener
                 mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
                 mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
                 mDate.set(Calendar.MINUTE, minute);
+                //将视图中的各选项设置为系统当前时间
                 updateTitle(mDate.getTimeInMillis());
             }
         });
-        mDate.setTimeInMillis(date);
+        mDate.setTimeInMillis(date);//得到系统时间
-        mDate.set(Calendar.SECOND, 0);
+        mDate.set(Calendar.SECOND, 0);//将秒数设置为0
         mDateTimePicker.setCurrentDate(mDate.getTimeInMillis());
         setButton(context.getString(R.string.datetime_dialog_ok), this);
-        setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
+        setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);//设置按钮
-        set24HourView(DateFormat.is24HourFormat(this.getContext()));
+        set24HourView(DateFormat.is24HourFormat(this.getContext()));//时间标准化打印
         updateTitle(mDate.getTimeInMillis());
     }
  
@@ -68,10 +62,12 @@ public class DateTimePickerDialog extends AlertDialog implements OnClickListener
         mIs24HourView = is24HourView;
     }
  
+    /*将时间日期滚动选择控件实例化*/
     public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) {
         mOnDateTimeSetListener = callBack;
     }
  
+    /*android开发中常见日期管理工具类（API）——DateUtils：按照上下午显示时间*/
     private void updateTitle(long date) {
         int flag =
             DateUtils.FORMAT_SHOW_YEAR |
@@ -81,6 +77,8 @@ public class DateTimePickerDialog extends AlertDialog implements OnClickListener
         setTitle(DateUtils.formatDateTime(this.getContext(), date, flag));
     }
  
+    /*第一个参数arg0是接收到点击事件的对话框
+      第二个参数arg1是该对话框上的按钮*/
     public void onClick(DialogInterface arg0, int arg1) {
         if (mOnDateTimeSetListener != null) {
             mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());

src/Notes-master3/app/src/main/java/net/micode/notes/ui/DropdownMenu.java

@@ -1,19 +1,3 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
  
 import android.content.Context;
@@ -29,14 +13,16 @@ import net.micode.notes.R;
  
 public class DropdownMenu {
     private Button mButton;
-    private PopupMenu mPopupMenu;
+    private PopupMenu mPopupMenu;//声明一个下拉菜单
     private Menu mMenu;
  
     public DropdownMenu(Context context, Button button, int menuId) {
         mButton = button;
-        mButton.setBackgroundResource(R.drawable.dropdown_icon);
+        mButton.setBackgroundResource(R.drawable.dropdown_icon);//设置这个view的背景
         mPopupMenu = new PopupMenu(context, mButton);
         mMenu = mPopupMenu.getMenu();
+        //MenuInflater是用来实例化Menu目录下的Menu布局文件
+        //根据ID来确认menu的内容选项
         mPopupMenu.getMenuInflater().inflate(menuId, mMenu);
         mButton.setOnClickListener(new OnClickListener() {
             public void onClick(View v) {
@@ -45,16 +31,19 @@ public class DropdownMenu {
         });
     }
  
+    /*设置菜单的监听 */
     public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) {
         if (mPopupMenu != null) {
             mPopupMenu.setOnMenuItemClickListener(listener);
         }
     }
  
+    /*对于菜单选项的初始化，根据索引搜索菜单需要的选项 */
     public MenuItem findItem(int id) {
         return mMenu.findItem(id);
     }
  
+    /*布局文件，设置标题 */
     public void setTitle(CharSequence title) {
         mButton.setText(title);
     }

src/Notes-master3/app/src/main/java/net/micode/notes/ui/FoldersListAdapter.java

@@ -1,19 +1,3 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
  
 import android.content.Context;
@@ -28,7 +12,14 @@ import net.micode.notes.R;
 import net.micode.notes.data.Notes;
 import net.micode.notes.data.Notes.NoteColumns;
  
+/**
+ *  CursorAdapter是Cursor和ListView的接口
+    FoldersListAdapter继承了CursorAdapter的类
+	主要作用是便签数据库和用户的交互
+	这里就是用folder（文件夹）的形式展现给用户
+ */
 
+ /*调用数据库中便签的ID和片段 */
 public class FoldersListAdapter extends CursorAdapter {
     public static final String [] PROJECTION = {
         NoteColumns.ID,
@@ -38,17 +29,21 @@ public class FoldersListAdapter extends CursorAdapter {
     public static final int ID_COLUMN   = 0;
     public static final int NAME_COLUMN = 1;
  
+    /*数据库操作 */
     public FoldersListAdapter(Context context, Cursor c) {
         super(context, c);
         // TODO Auto-generated constructor stub
     }
  
     @Override
+    /*创建一个文件夹，对于各文件夹中子标签的初始化 */
     public View newView(Context context, Cursor cursor, ViewGroup parent) {
+        //ViewGroup是容器
     	return new FolderListItem(context);
     }
  
     @Override
+    /*将各个布局文件绑定起来 */
     public void bindView(View view, Context context, Cursor cursor) {
         if (view instanceof FolderListItem) {
             String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
@@ -57,6 +52,7 @@ public class FoldersListAdapter extends CursorAdapter {
         }
     }
  
+    /*根据数据库中标签的ID得到标签的各项内容 */
     public String getFolderName(Context context, int position) {
         Cursor cursor = (Cursor) getItem(position);
         return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
@@ -67,8 +63,8 @@ public class FoldersListAdapter extends CursorAdapter {
         private TextView mName;
  
         public FolderListItem(Context context) {
-            super(context);
+            super(context);//操作数据库
-            inflate(context, R.layout.folder_list_item, this);
+            inflate(context, R.layout.folder_list_item, this);//根据布局文件的名字等信息将其找出来
             mName = (TextView) findViewById(R.id.tv_folder_name);
         }
  

src/Notes-master3/app/src/main/java/net/micode/notes/ui/NoteEditActivity.java

@@ -1,19 +1,3 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
  
 import android.app.Activity;
@@ -71,9 +55,13 @@ import java.util.Map;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
  
-
+/**
+ *  该类主要是针对标签的编辑
+    继承了系统内部许多和监听有关的类
+ */
 public class NoteEditActivity extends Activity implements OnClickListener,
         NoteSettingChangedListener, OnTextViewChangeListener {
+    /*使用Map实现数据存储 */
     private class HeadViewHolder {
         public TextView tvModified;
  
@@ -91,6 +79,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         sBgSelectorBtnsMap.put(R.id.iv_bg_blue, ResourceParser.BLUE);
         sBgSelectorBtnsMap.put(R.id.iv_bg_green, ResourceParser.GREEN);
         sBgSelectorBtnsMap.put(R.id.iv_bg_white, ResourceParser.WHITE);
+        //put函数是将指定值和指定键相连
     }
  
     private static final Map<Integer, Integer> sBgSelectorSelectionMap = new HashMap<Integer, Integer>();
@@ -100,6 +89,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         sBgSelectorSelectionMap.put(ResourceParser.BLUE, R.id.iv_bg_blue_select);
         sBgSelectorSelectionMap.put(ResourceParser.GREEN, R.id.iv_bg_green_select);
         sBgSelectorSelectionMap.put(ResourceParser.WHITE, R.id.iv_bg_white_select);
+        //put函数是将指定值和指定键相连
     }
  
     private static final Map<Integer, Integer> sFontSizeBtnsMap = new HashMap<Integer, Integer>();
@@ -108,6 +98,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         sFontSizeBtnsMap.put(R.id.ll_font_small, ResourceParser.TEXT_SMALL);
         sFontSizeBtnsMap.put(R.id.ll_font_normal, ResourceParser.TEXT_MEDIUM);
         sFontSizeBtnsMap.put(R.id.ll_font_super, ResourceParser.TEXT_SUPER);
+        //put函数是将指定值和指定键相连
     }
  
     private static final Map<Integer, Integer> sFontSelectorSelectionMap = new HashMap<Integer, Integer>();
@@ -116,27 +107,24 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         sFontSelectorSelectionMap.put(ResourceParser.TEXT_SMALL, R.id.iv_small_select);
         sFontSelectorSelectionMap.put(ResourceParser.TEXT_MEDIUM, R.id.iv_medium_select);
         sFontSelectorSelectionMap.put(ResourceParser.TEXT_SUPER, R.id.iv_super_select);
+        //put函数是将指定值和指定键相连
     }
  
     private static final String TAG = "NoteEditActivity";
  
     private HeadViewHolder mNoteHeaderHolder;
  
-    private View mHeadViewPanel;
+    private View mHeadViewPanel;//私有化一个界面操作mHeadViewPanel，对表头的操作
-
+    private View mNoteBgColorSelector;//私有化一个界面操作mNoteBgColorSelector，对背景颜色的操作
-    private View mNoteBgColorSelector;
+    private View mFontSizeSelector;//私有化一个界面操作mFontSizeSelector，对标签字体的操作
-
+    private EditText mNoteEditor;//声明编辑控件，对文本操作
-    private View mFontSizeSelector;
+    private View mNoteEditorPanel;//私有化一个界面操作mNoteEditorPanel，文本编辑的控制板
-
+    //private WorkingNote mWorkingNote;
-    private EditText mNoteEditor;
+    public WorkingNote mWorkingNote;//对模板WorkingNote的初始化
-
+    //私有化SharedPreferences的数据存储方式
-    private View mNoteEditorPanel;
+    //它的本质是基于XML文件存储key-value键值对数据
-
-    private WorkingNote mWorkingNote;
-
     private SharedPreferences mSharedPrefs;
-    private int mFontSizeId;
+    private int mFontSizeId;//用于操作字体的大小
-
     private static final String PREFERENCE_FONT_SIZE = "pref_font_size";
  
     private static final int SHORTCUT_ICON_TITLE_MAX_LEN = 10;
@@ -144,16 +132,14 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     public static final String TAG_CHECKED = String.valueOf('\u221A');
     public static final String TAG_UNCHECKED = String.valueOf('\u25A1');
  
-    private LinearLayout mEditTextList;
+    private LinearLayout mEditTextList;//线性布局
-
     private String mUserQuery;
     private Pattern mPattern;
  
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        this.setContentView(R.layout.note_edit);
+        this.setContentView(R.layout.note_edit);//对数据库的访问操作
-
         if (savedInstanceState == null && !initActivityState(getIntent())) {
             finish();
             return;
@@ -176,7 +162,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
                 return;
             }
             Log.d(TAG, "Restoring from killed activity");
-        }
+        }//为防止内存不足时程序的终止，在这里有一个保存现场的函数
     }
  
     private boolean initActivityState(Intent intent) {
@@ -188,34 +174,42 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         if (TextUtils.equals(Intent.ACTION_VIEW, intent.getAction())) {
             long noteId = intent.getLongExtra(Intent.EXTRA_UID, 0);
             mUserQuery = "";
-
+            //如果用户实例化标签时，系统并未给出标签ID
             /**
              * Starting from the searched result
              */
+            //根据键值查找ID
             if (intent.hasExtra(SearchManager.EXTRA_DATA_KEY)) {
                 noteId = Long.parseLong(intent.getStringExtra(SearchManager.EXTRA_DATA_KEY));
                 mUserQuery = intent.getStringExtra(SearchManager.USER_QUERY);
             }
-
+            //如果ID在数据库中未找到
             if (!DataUtils.visibleInNoteDatabase(getContentResolver(), noteId, Notes.TYPE_NOTE)) {
                 Intent jump = new Intent(this, NotesListActivity.class);
                 startActivity(jump);
+                //程序将跳转到上面声明的intent——jump
                 showToast(R.string.error_note_not_exist);
                 finish();
                 return false;
-            } else {
+            } 
+            //ID在数据库中找到
+            else {
                 mWorkingNote = WorkingNote.load(this, noteId);
                 if (mWorkingNote == null) {
                     Log.e(TAG, "load note failed with note id" + noteId);
+                    //打印出红色的错误信息
                     finish();
                     return false;
                 }
             }
+            //setSoftInputMode——软键盘输入模式
             getWindow().setSoftInputMode(
                     WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN
                             | WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
         } else if(TextUtils.equals(Intent.ACTION_INSERT_OR_EDIT, intent.getAction())) {
-            // New note
+            // intent.getAction()
+        	// 大多用于broadcast发送广播时给机制（intent）设置一个action，就是一个字符串 
+        	// 用户可以通过receive（接受）intent，通过 getAction得到的字符串，来决定做什么
             long folderId = intent.getLongExtra(Notes.INTENT_EXTRA_FOLDER_ID, 0);
             int widgetId = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_ID,
                     AppWidgetManager.INVALID_APPWIDGET_ID);
@@ -223,7 +217,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
                     Notes.TYPE_WIDGET_INVALIDE);
             int bgResId = intent.getIntExtra(Notes.INTENT_EXTRA_BACKGROUND_ID,
                     ResourceParser.getDefaultBgId(this));
-
+            // intent.getInt（Long、String）Extra是对各变量的语法分析
             // Parse call-record note
             String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
             long callDate = intent.getLongExtra(Notes.INTENT_EXTRA_CALL_DATE, 0);
@@ -240,15 +234,17 @@ public class NoteEditActivity extends Activity implements OnClickListener,
                         finish();
                         return false;
                     }
+                    //将电话号码与手机的号码簿相关
                 } else {
                     mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId,
                             widgetType, bgResId);
                     mWorkingNote.convertToCallNote(phoneNumber, callDate);
+                    //
                 }
             } else {
                 mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId, widgetType,
                         bgResId);
-            }
+            }//创建一个新的WorkingNote
  
             getWindow().setSoftInputMode(
                     WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE
@@ -269,8 +265,10 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     }
  
     private void initNoteScreen() {
+    	//对界面的初始化操作
         mNoteEditor.setTextAppearance(this, TextAppearanceResources
                 .getTexAppearanceResource(mFontSizeId));
+        //设置外观
         if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
             switchToListMode(mWorkingNote.getContent());
         } else {
@@ -294,18 +292,21 @@ public class NoteEditActivity extends Activity implements OnClickListener,
          */
         showAlertHeader();
     }
-
+    //设置闹钟的显示
     private void showAlertHeader() {
         if (mWorkingNote.hasClockAlert()) {
             long time = System.currentTimeMillis();
             if (time > mWorkingNote.getAlertDate()) {
                 mNoteHeaderHolder.tvAlertDate.setText(R.string.note_alert_expired);
-            } else {
+            } 
+            //如果系统时间大于了闹钟设置的时间，那么闹钟失效
+            else {
                 mNoteHeaderHolder.tvAlertDate.setText(DateUtils.getRelativeTimeSpanString(
                         mWorkingNote.getAlertDate(), time, DateUtils.MINUTE_IN_MILLIS));
             }
             mNoteHeaderHolder.tvAlertDate.setVisibility(View.VISIBLE);
             mNoteHeaderHolder.ivAlertIcon.setVisibility(View.VISIBLE);
+            //显示闹钟开启的图标
         } else {
             mNoteHeaderHolder.tvAlertDate.setVisibility(View.GONE);
             mNoteHeaderHolder.ivAlertIcon.setVisibility(View.GONE);
@@ -329,26 +330,29 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         if (!mWorkingNote.existInDatabase()) {
             saveNote();
         }
+        //在创建一个新的标签时，先在数据库中匹配
+        //如果不存在，那么先在数据库中存储
         outState.putLong(Intent.EXTRA_UID, mWorkingNote.getNoteId());
         Log.d(TAG, "Save working note id: " + mWorkingNote.getNoteId() + " onSaveInstanceState");
     }
  
     @Override
+    //MotionEvent是对屏幕触控的传递机制
     public boolean dispatchTouchEvent(MotionEvent ev) {
         if (mNoteBgColorSelector.getVisibility() == View.VISIBLE
                 && !inRangeOfView(mNoteBgColorSelector, ev)) {
             mNoteBgColorSelector.setVisibility(View.GONE);
             return true;
-        }
+        }//颜色选择器在屏幕上可见
  
         if (mFontSizeSelector.getVisibility() == View.VISIBLE
                 && !inRangeOfView(mFontSizeSelector, ev)) {
             mFontSizeSelector.setVisibility(View.GONE);
             return true;
-        }
+        }//字体大小选择器在屏幕上可见
         return super.dispatchTouchEvent(ev);
     }
-
+    //对屏幕触控的坐标进行操作
     private boolean inRangeOfView(View view, MotionEvent ev) {
         int []location = new int[2];
         view.getLocationOnScreen(location);
@@ -357,7 +361,9 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         if (ev.getX() < x
                 || ev.getX() > (x + view.getWidth())
                 || ev.getY() < y
-                || ev.getY() > (y + view.getHeight())) {
+                || ev.getY() > (y + view.getHeight()))
+        //如果触控的位置超出了给定的范围，返回false
+        {
                     return false;
                 }
         return true;
@@ -377,13 +383,13 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         for (int id : sBgSelectorBtnsMap.keySet()) {
             ImageView iv = (ImageView) findViewById(id);
             iv.setOnClickListener(this);
-        }
+        }//对标签各项属性内容的初始化
  
         mFontSizeSelector = findViewById(R.id.font_size_selector);
         for (int id : sFontSizeBtnsMap.keySet()) {
             View view = findViewById(id);
             view.setOnClickListener(this);
-        };
+        };//对字体大小的选择
         mSharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
         mFontSizeId = mSharedPrefs.getInt(PREFERENCE_FONT_SIZE, ResourceParser.BG_DEFAULT_FONT_SIZE);
         /**
@@ -405,7 +411,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         }
         clearSettingState();
     }
-
+    //和桌面小工具的同步
     private void updateWidget() {
         Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
         if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_2X) {
@@ -450,7 +456,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
             }
             mFontSizeSelector.setVisibility(View.GONE);
         }
-    }
+    }//************************存在问题
  
     @Override
     public void onBackPressed() {
@@ -481,6 +487,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     }
  
     @Override
+    //对选择菜单的准备
     public boolean onPrepareOptionsMenu(Menu menu) {
         if (isFinishing()) {
             return true;
@@ -489,6 +496,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         menu.clear();
         if (mWorkingNote.getFolderId() == Notes.ID_CALL_RECORD_FOLDER) {
             getMenuInflater().inflate(R.menu.call_note_edit, menu);
+            // MenuInflater是用来实例化Menu目录下的Menu布局文件的
         } else {
             getMenuInflater().inflate(R.menu.note_edit, menu);
         }
@@ -506,148 +514,243 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     }
  
     @Override
+    /*
+     * 函数功能：动态改变菜单选项内容
+     * 函数实现：如下注释
+     */
     public boolean onOptionsItemSelected(MenuItem item) {
-        int itemId = item.getItemId();
+        switch (item.getItemId()) {
-        if (itemId == R.id.menu_new_note) {
+        //根据菜单的id来编剧相关项目
+            case R.id.menu_new_note:
+            	//创建一个新的便签
                 createNewNote();
-        } else if (itemId == R.id.menu_delete) {
+                break;
+            case R.id.menu_delete:
+            	//删除便签
                 AlertDialog.Builder builder = new AlertDialog.Builder(this);
+                //创建关于删除操作的对话框
                 builder.setTitle(getString(R.string.alert_title_delete));
+                // 设置标签的标题为alert_title_delete
                 builder.setIcon(android.R.drawable.ic_dialog_alert);
+                //设置对话框图标
                 builder.setMessage(getString(R.string.alert_message_delete_note));
+                //设置对话框内容
                 builder.setPositiveButton(android.R.string.ok,
                         new DialogInterface.OnClickListener() {
+                	//建立按键监听器
                             public void onClick(DialogInterface dialog, int which) {
+                            	//点击所触发事件
                                 deleteCurrentNote();
+                                //  删除单签便签
                                 finish();
                             }
                         });
+                //添加“YES”按钮
                 builder.setNegativeButton(android.R.string.cancel, null);
+                //添加“NO”的按钮
                 builder.show();
-        } else if (itemId == R.id.menu_font_size) {
+                //显示对话框
+                break;
+            case R.id.menu_font_size:
+            //字体大小的编辑
                 mFontSizeSelector.setVisibility(View.VISIBLE);
+            // 将字体选择器置为可见
                 findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE);
-        } else if (itemId == R.id.menu_list_mode) {
+            // 通过id找到相应的大小
+                break;
+            case R.id.menu_list_mode:
+            	//选择列表模式
                 mWorkingNote.setCheckListMode(mWorkingNote.getCheckListMode() == 0 ?
                         TextNote.MODE_CHECK_LIST : 0);
-        } else if (itemId == R.id.menu_share) {
+                break;
+            case R.id.menu_share:
+            	//菜单共享
                 getWorkingText();
                 sendTo(this, mWorkingNote.getContent());
-        } else if (itemId == R.id.menu_send_to_desktop) {
+                // 用sendto函数将运行文本发送到遍历的本文内
+                break;
+            case R.id.menu_send_to_desktop:
+            	//发送到桌面
                 sendToDesktop();
-        } else if (itemId == R.id.menu_alert) {
+                break;
+            case R.id.menu_alert:
+            	//创建提醒器
                 setReminder();
-        } else if (itemId == R.id.menu_delete_remind) {
+                break;
+            case R.id.menu_delete_remind:
+            	//删除日期提醒
                 mWorkingNote.setAlertDate(0, false);
+                break;
+            default:
+                break;
         }
         return true;
     }
  
+    /*
+     * 函数功能：建立事件提醒器
+     * 函数实现：如下注释
+     */
     private void setReminder() {
         DateTimePickerDialog d = new DateTimePickerDialog(this, System.currentTimeMillis());
+        // 建立修改时间日期的对话框
         d.setOnDateTimeSetListener(new OnDateTimeSetListener() {
             public void OnDateTimeSet(AlertDialog dialog, long date) {
                 mWorkingNote.setAlertDate(date	, true);
+                //选择提醒的日期
             }
         }); 
+        //建立时间日期的监听器
         d.show();
+        //显示对话框
     }
  
     /**
      * Share note to apps that support {@link Intent#ACTION_SEND} action
      * and {@text/plain} type
      */
+    /*
+     * 函数功能：共享便签
+     * 函数实现：如下注释
+     */
     private void sendTo(Context context, String info) {
         Intent intent = new Intent(Intent.ACTION_SEND);
+        //建立intent链接选项
         intent.putExtra(Intent.EXTRA_TEXT, info);
+        //将需要传递的便签信息放入text文件中
         intent.setType("text/plain");
+        //编辑连接器的类型
         context.startActivity(intent);
+        //在acti中进行链接
     }
  
+    /*
+     * 函数功能：创建一个新的便签
+     * 函数实现：如下注释
+     */
     private void createNewNote() {
         // Firstly, save current editing notes
+    	//保存当前便签
         saveNote();
  
         // For safety, start a new NoteEditActivity
         finish();
         Intent intent = new Intent(this, NoteEditActivity.class);
+        //设置链接器
         intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
+        //该活动定义为创建或编辑
         intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mWorkingNote.getFolderId());
+        //将运行便签的id添加到INTENT_EXTRA_FOLDER_ID标记中
         startActivity(intent);
+        //开始activity并链接
     }
  
+    /*
+     * 函数功能：删除当前便签
+     * 函数实现：如下注释
+     */
     private void deleteCurrentNote() {
         if (mWorkingNote.existInDatabase()) {
+        	//假如当前运行的便签内存有数据
             HashSet<Long> ids = new HashSet<Long>();
             long id = mWorkingNote.getNoteId();
             if (id != Notes.ID_ROOT_FOLDER) {
                 ids.add(id);
+            //如果不是头文件夹建立一个hash表把便签id存起来
             } else {
                 Log.d(TAG, "Wrong note id, should not happen");
+                //否则报错
             }
             if (!isSyncMode()) {
+            	//在非同步模式情况下
+            	//删除操作
                 if (!DataUtils.batchDeleteNotes(getContentResolver(), ids)) {
                     Log.e(TAG, "Delete Note error");
                 }
             } else {
+            	 //同步模式
+            	//移动至垃圾文件夹的操作
                 if (!DataUtils.batchMoveToFolder(getContentResolver(), ids, Notes.ID_TRASH_FOLER)) {
                     Log.e(TAG, "Move notes to trash folder error, should not happens");
                 }
             }
         }
         mWorkingNote.markDeleted(true);
+        //将这些标签的删除标记置为true
     }
  
+    /*
+     * 函数功能：判断是否为同步模式
+     * 函数实现：直接看NotesPreferenceActivity中同步名称是否为空
+     */
     private boolean isSyncMode() {
         return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0;
     }
  
+    /*
+     * 函数功能：设置提醒时间
+     * 函数实现：如下注释
+     */
     public void onClockAlertChanged(long date, boolean set) {
         /**
          * User could set clock to an unsaved note, so before setting the
          * alert clock, we should save the note first
          */
         if (!mWorkingNote.existInDatabase()) {
+        	//首先保存已有的便签
             saveNote();
         }
         if (mWorkingNote.getNoteId() > 0) {
             Intent intent = new Intent(this, AlarmReceiver.class);
             intent.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mWorkingNote.getNoteId()));
+            //若有有运行的便签就是建立一个链接器将标签id都存在uri中
             PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
             AlarmManager alarmManager = ((AlarmManager) getSystemService(ALARM_SERVICE));
+            //设置提醒管理器
             showAlertHeader();
             if(!set) {
                 alarmManager.cancel(pendingIntent);
             } else {
                 alarmManager.set(AlarmManager.RTC_WAKEUP, date, pendingIntent);
             }
+            //如果用户设置了时间，就通过提醒管理器设置一个监听事项
         } else {
             /**
              * There is the condition that user has input nothing (the note is
              * not worthy saving), we have no note id, remind the user that he
              * should input something
              */ 
+        	//没有运行的便签就报错
             Log.e(TAG, "Clock alert setting error");
             showToast(R.string.error_note_empty_for_clock);
         }
     }
  
+    /*
+     * 函数功能：Widget发生改变的所触发的事件
+     */
     public void onWidgetChanged() {
-        updateWidget();
+        updateWidget();//更新Widget
     }
  
+    /*
+     * 函数功能： 删除编辑文本框所触发的事件
+     * 函数实现：如下注释
+     */
     public void onEditTextDelete(int index, String text) {
         int childCount = mEditTextList.getChildCount();
         if (childCount == 1) {
             return;
         }
-
+        //没有编辑框的话直接返回
         for (int i = index + 1; i < childCount; i++) {
             ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text))
                     .setIndex(i - 1);
+            //通过id把编辑框存在便签编辑框中
         }
  
         mEditTextList.removeViewAt(index);
+        //删除特定位置的视图
         NoteEditText edit = null;
         if(index == 0) {
             edit = (NoteEditText) mEditTextList.getChildAt(0).findViewById(
@@ -656,69 +759,101 @@ public class NoteEditActivity extends Activity implements OnClickListener,
             edit = (NoteEditText) mEditTextList.getChildAt(index - 1).findViewById(
                     R.id.et_edit_text);
         }
+        //通过id把编辑框存在空的NoteEditText中
         int length = edit.length();
         edit.append(text);
-        edit.requestFocus();
+        edit.requestFocus();//请求优先完成该此 编辑
-        edit.setSelection(length);
+        edit.setSelection(length);//定位到length位置处的条目
     }
  
+    /*
+     * 函数功能：进入编辑文本框所触发的事件
+     * 函数实现：如下注释
+     */
     public void onEditTextEnter(int index, String text) {
         /**
          * Should not happen, check for debug
          */
         if(index > mEditTextList.getChildCount()) {
             Log.e(TAG, "Index out of mEditTextList boundrary, should not happen");
+            //越界把偶偶
         }
  
         View view = getListItem(text, index);
         mEditTextList.addView(view, index);
+        //建立一个新的视图并添加到编辑文本框内
         NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
-        edit.requestFocus();
+        edit.requestFocus();//请求优先操作
-        edit.setSelection(0);
+        edit.setSelection(0);//定位到起始位置
         for (int i = index + 1; i < mEditTextList.getChildCount(); i++) {
             ((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text))
                     .setIndex(i);
+            //遍历子文本框并设置对应对下标
         }
     }
  
+    /*
+     * 函数功能：切换至列表模式
+     * 函数实现：如下注释
+     */
     private void switchToListMode(String text) {
         mEditTextList.removeAllViews();
         String[] items = text.split("\n");
         int index = 0;
+        //清空所有视图，初始化下标
         for (String item : items) {
             if(!TextUtils.isEmpty(item)) {
                 mEditTextList.addView(getListItem(item, index));
                 index++;
+                //遍历所有文本单元并添加到文本框中
             }
         }
         mEditTextList.addView(getListItem("", index));
         mEditTextList.getChildAt(index).findViewById(R.id.et_edit_text).requestFocus();
+        //优先请求此操作
  
         mNoteEditor.setVisibility(View.GONE);
+        //便签编辑器不可见
         mEditTextList.setVisibility(View.VISIBLE);
+        //将文本编辑框置为可见
     }
  
+    /*
+     * 函数功能：获取高亮效果的反馈情况
+     * 函数实现：如下注释
+     */
     private Spannable getHighlightQueryResult(String fullText, String userQuery) {
         SpannableString spannable = new SpannableString(fullText == null ? "" : fullText);
+        //新建一个效果选项
         if (!TextUtils.isEmpty(userQuery)) {
             mPattern = Pattern.compile(userQuery);
+            //将用户的询问进行解析
             Matcher m = mPattern.matcher(fullText);
+            //建立一个状态机检查Pattern并进行匹配
             int start = 0;
             while (m.find(start)) {
                 spannable.setSpan(
                         new BackgroundColorSpan(this.getResources().getColor(
                                 R.color.user_query_highlight)), m.start(), m.end(),
                         Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
+                //设置背景颜色
                 start = m.end();
+                //跟新起始位置
             }
         }
         return spannable;
     }
  
+    /*
+     * 函数功能：获取列表项
+     * 函数实现：如下注释
+     */
     private View getListItem(String item, int index) {
         View view = LayoutInflater.from(this).inflate(R.layout.note_edit_list_item, null);
+        //创建一个视图
         final NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
         edit.setTextAppearance(this, TextAppearanceResources.getTexAppearanceResource(mFontSizeId));
+        //创建一个文本编辑框并设置可见性
         CheckBox cb = ((CheckBox) view.findViewById(R.id.cb_edit_item));
         cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
@@ -729,12 +864,15 @@ public class NoteEditActivity extends Activity implements OnClickListener,
                 }
             }
         });
+        //建立一个打钩框并设置监听器
  
         if (item.startsWith(TAG_CHECKED)) {
+        	//选择勾选
             cb.setChecked(true);
             edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
             item = item.substring(TAG_CHECKED.length(), item.length()).trim();
         } else if (item.startsWith(TAG_UNCHECKED)) {
+        	//选择不勾选
             cb.setChecked(false);
             edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);
             item = item.substring(TAG_UNCHECKED.length(), item.length()).trim();
@@ -743,61 +881,94 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         edit.setOnTextViewChangeListener(this);
         edit.setIndex(index);
         edit.setText(getHighlightQueryResult(item, mUserQuery));
+        //运行编辑框的监听器对该行为作出反应，并设置下标及文本内容
         return view;
     }
  
+    /*
+     * 函数功能：便签内容发生改变所 触发的事件
+     * 函数实现：如下注释
+     */
     public void onTextChange(int index, boolean hasText) {
         if (index >= mEditTextList.getChildCount()) {
             Log.e(TAG, "Wrong index, should not happen");
             return;
+            //越界报错
         }
         if(hasText) {
             mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.VISIBLE);
         } else {
             mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.GONE);
         }
+        //如果内容不为空则将其子编辑框可见性置为可见，否则不可见
     }
  
+    /*
+     * 函数功能：检查模式和列表模式的切换
+     * 函数实现：如下注释
+     */
     public void onCheckListModeChanged(int oldMode, int newMode) {
         if (newMode == TextNote.MODE_CHECK_LIST) {
             switchToListMode(mNoteEditor.getText().toString());
+            //检查模式切换到列表模式
         } else {
             if (!getWorkingText()) {
                 mWorkingNote.setWorkingText(mWorkingNote.getContent().replace(TAG_UNCHECKED + " ",
                         ""));
             }
+            //若是获取到文本就改变其检查标记
             mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery));
             mEditTextList.setVisibility(View.GONE);
             mNoteEditor.setVisibility(View.VISIBLE);
+            //修改文本编辑器的内容和可见性
         }
     }
  
+    /*
+     * 函数功能：设置勾选选项表并返回是否勾选的标记
+     * 函数实现：如下注释
+     */
     private boolean getWorkingText() {
         boolean hasChecked = false;
+        //初始化check标记
         if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
+        	// 若模式为CHECK_LIST
             StringBuilder sb = new StringBuilder();
+            //创建可变字符串
             for (int i = 0; i < mEditTextList.getChildCount(); i++) {
                 View view = mEditTextList.getChildAt(i);
+                //遍历所有子编辑框的视图 
                 NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
                 if (!TextUtils.isEmpty(edit.getText())) {
+                	//若文本不为空
                     if (((CheckBox) view.findViewById(R.id.cb_edit_item)).isChecked()) {
+                    	//该选项框已打钩
                         sb.append(TAG_CHECKED).append(" ").append(edit.getText()).append("\n");
                         hasChecked = true;
+                        //扩展字符串为已打钩并把标记置true
                     } else {
                         sb.append(TAG_UNCHECKED).append(" ").append(edit.getText()).append("\n");
+                        //扩展字符串添加未打钩
                     }
                 }
             }
             mWorkingNote.setWorkingText(sb.toString());
+            //利用编辑好的字符串设置运行便签的内容
         } else {
             mWorkingNote.setWorkingText(mNoteEditor.getText().toString());
+            // 若不是该模式直接用编辑器中的内容设置运行中标签的内容
         }
         return hasChecked;
     }
  
+    /*
+     * 函数功能：保存便签
+     * 函数实现：如下注释 
+     */
     private boolean saveNote() {
         getWorkingText();
         boolean saved = mWorkingNote.saveNote();
+        //运行 getWorkingText()之后保存
         if (saved) {
             /**
              * There are two modes from List view to edit view, open one note,
@@ -806,11 +977,16 @@ public class NoteEditActivity extends Activity implements OnClickListener,
              * new node requires to the top of the list. This code
              * {@link #RESULT_OK} is used to identify the create/edit state
              */
+        	//如英文注释所说链接RESULT_OK是为了识别保存的2种情况，一是创建后保存，二是修改后保存
             setResult(RESULT_OK);
         }
         return saved;
     }
  
+    /*
+     * 函数功能：将便签发送至桌面
+     * 函数实现：如下注释 
+     */
     private void sendToDesktop() {
         /**
          * Before send message to home, we should make sure that current
@@ -819,12 +995,16 @@ public class NoteEditActivity extends Activity implements OnClickListener,
          */
         if (!mWorkingNote.existInDatabase()) {
             saveNote();
+            //若不存在数据也就是新的标签就保存起来先
         }
  
         if (mWorkingNote.getNoteId() > 0) {
+        	//若是有内容
             Intent sender = new Intent();
             Intent shortcutIntent = new Intent(this, NoteEditActivity.class);
+            //建立发送到桌面的连接器
             shortcutIntent.setAction(Intent.ACTION_VIEW);
+            //链接为一个视图
             shortcutIntent.putExtra(Intent.EXTRA_UID, mWorkingNote.getNoteId());
             sender.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
             sender.putExtra(Intent.EXTRA_SHORTCUT_NAME,
@@ -832,9 +1012,12 @@ public class NoteEditActivity extends Activity implements OnClickListener,
             sender.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE,
                     Intent.ShortcutIconResource.fromContext(this, R.drawable.icon_app));
             sender.putExtra("duplicate", true);
+            //将便签的相关信息都添加到要发送的文件里
             sender.setAction("com.android.launcher.action.INSTALL_SHORTCUT");
+            //设置sneder的行为是发送
             showToast(R.string.info_note_enter_desktop);
             sendBroadcast(sender);
+            //显示到桌面
         } else {
             /**
              * There is the condition that user has input nothing (the note is
@@ -843,20 +1026,34 @@ public class NoteEditActivity extends Activity implements OnClickListener,
              */
             Log.e(TAG, "Send to desktop error");
             showToast(R.string.error_note_empty_for_send_to_desktop);
+            //空便签直接报错
         }
     }
  
+    /*
+     * 函数功能：编辑小图标的标题
+     * 函数实现：如下注释 
+     */
     private String makeShortcutIconTitle(String content) {
         content = content.replace(TAG_CHECKED, "");
         content = content.replace(TAG_UNCHECKED, "");
         return content.length() > SHORTCUT_ICON_TITLE_MAX_LEN ? content.substring(0,
                 SHORTCUT_ICON_TITLE_MAX_LEN) : content;
+        //直接设置为content中的内容并返回，有勾选和未勾选2种
     } 
  
+    /*
+     * 函数功能：显示提示的视图
+     * 函数实现：根据下标显示对应的提示
+     */
     private void showToast(int resId) {
         showToast(resId, Toast.LENGTH_SHORT);
     }
  
+    /*
+     * 函数功能：持续显示提示的视图
+     * 函数实现：根据下标和持续的时间（duration）编辑提示视图并显示
+     */
     private void showToast(int resId, int duration) {
         Toast.makeText(this, resId, duration).show();
     }

src/Notes-master3/app/src/main/java/net/micode/notes/ui/NoteEditText.java

@@ -37,6 +37,9 @@ import net.micode.notes.R;
 import java.util.HashMap;
 import java.util.Map;
 
+/**
+ * 实现便签编辑活动
+ */
 public class NoteEditText extends EditText {
     private static final String TAG = "NoteEditText";
     private int mIndex;

src/Notes-master3/app/src/main/java/net/micode/notes/ui/NoteItemData.java

@@ -1,19 +1,3 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
  
 import android.content.Context;
@@ -25,7 +9,9 @@ import net.micode.notes.data.Notes;
 import net.micode.notes.data.Notes.NoteColumns;
 import net.micode.notes.tool.DataUtils;
  
-
+/**
+ * 便签项数据
+ */
 public class NoteItemData {
     static final String [] PROJECTION = new String [] {
         NoteColumns.ID,
@@ -75,8 +61,9 @@ public class NoteItemData {
     private boolean mIsOnlyOneItem;
     private boolean mIsOneNoteFollowingFolder;
     private boolean mIsMultiNotesFollowingFolder;
-
+    //初始化NoteItemData，主要利用光标cursor获取的东西
     public NoteItemData(Context context, Cursor  cursor) {
+    	//getxxx为转换格式
         mId = cursor.getLong(ID_COLUMN);
         mAlertDate = cursor.getLong(ALERTED_DATE_COLUMN);
         mBgColorId = cursor.getInt(BG_COLOR_ID_COLUMN);
@@ -92,10 +79,11 @@ public class NoteItemData {
         mWidgetId = cursor.getInt(WIDGET_ID_COLUMN);
         mWidgetType = cursor.getInt(WIDGET_TYPE_COLUMN);
  
+        //初始化电话号码的信息
         mPhoneNumber = "";
         if (mParentId == Notes.ID_CALL_RECORD_FOLDER) {
             mPhoneNumber = DataUtils.getCallNumberByNoteId(context.getContentResolver(), mId);
-            if (!TextUtils.isEmpty(mPhoneNumber)) {
+            if (!TextUtils.isEmpty(mPhoneNumber)) {//mphonenumber里有符合字符串，则用contart功能连接
                 mName = Contact.getContact(context, mPhoneNumber);
                 if (mName == null) {
                     mName = mPhoneNumber;
@@ -108,32 +96,35 @@ public class NoteItemData {
         }
         checkPostion(cursor);
     }
-
+    ///根据鼠标的位置设置标记，和位置
     private void checkPostion(Cursor cursor) {
+    	//初始化几个标记，cursor具体功能笔记中已提到，不一一叙述
         mIsLastItem = cursor.isLast() ? true : false;
         mIsFirstItem = cursor.isFirst() ? true : false;
         mIsOnlyOneItem = (cursor.getCount() == 1);
+        //初始化“多重子文件”“单一子文件”2个标记
         mIsMultiNotesFollowingFolder = false;
         mIsOneNoteFollowingFolder = false;
  
-        if (mType == Notes.TYPE_NOTE && !mIsFirstItem) {
+        //主要是设置上诉2标记
+        if (mType == Notes.TYPE_NOTE && !mIsFirstItem) {//若是note格式并且不是第一个元素
             int position = cursor.getPosition();
-            if (cursor.moveToPrevious()) {
+            if (cursor.moveToPrevious()) {//获取光标位置后看上一行
                 if (cursor.getInt(TYPE_COLUMN) == Notes.TYPE_FOLDER
-                        || cursor.getInt(TYPE_COLUMN) == Notes.TYPE_SYSTEM) {
+                        || cursor.getInt(TYPE_COLUMN) == Notes.TYPE_SYSTEM) {//若光标满足系统或note格式
                     if (cursor.getCount() > (position + 1)) {
-                        mIsMultiNotesFollowingFolder = true;
+                        mIsMultiNotesFollowingFolder = true;//若是数据行数大于但前位置+1则设置成正确
                     } else {
-                        mIsOneNoteFollowingFolder = true;
+                        mIsOneNoteFollowingFolder = true;//否则单一文件夹标记为true
                     }
                 }
-                if (!cursor.moveToNext()) {
+                if (!cursor.moveToNext()) {//若不能再往下走则报错
                     throw new IllegalStateException("cursor move to previous but can't move back");
                 }
             }
         }
     }
-
+///以下都是获取标记
     public boolean isOneFollowingFolder() {
         return mIsOneNoteFollowingFolder;
     }
@@ -214,6 +205,7 @@ public class NoteItemData {
         return (mAlertDate > 0);
     }
  
+    //若数据父id为保存至文件夹模式的id且满足电话号码单元不为空，则isCallRecord为true
     public boolean isCallRecord() {
         return (mParentId == Notes.ID_CALL_RECORD_FOLDER && !TextUtils.isEmpty(mPhoneNumber));
     }

src/Notes-master3/app/src/main/java/net/micode/notes/ui/NotesListActivity.java

@@ -78,6 +78,9 @@ import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.util.HashSet;
 
+/**
+ * 主界面，实现处理文件夹列表的功能
+ */
 public class NotesListActivity extends Activity implements OnClickListener, OnItemLongClickListener {
     private static final int FOLDER_NOTE_LIST_QUERY_TOKEN = 0;
 
@@ -319,8 +322,8 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
                 return true;
             }
 
-            int itemId = item.getItemId();
+            switch (item.getItemId()) {
-            if (itemId == R.id.delete) {
+                case R.id.delete:
                     AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
                     builder.setTitle(getString(R.string.alert_title_delete));
                     builder.setIcon(android.R.drawable.ic_dialog_alert);
@@ -335,9 +338,11 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
                                              });
                     builder.setNegativeButton(android.R.string.cancel, null);
                     builder.show();
-            } else if (itemId == R.id.move) {
+                    break;
+                case R.id.move:
                     startQueryDestinationFolders();
-            } else {
+                    break;
+                default:
                     return false;
             }
             return true;
@@ -556,8 +561,12 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
     }
 
     public void onClick(View v) {
-        if (v.getId() == R.id.btn_new_note) {
+        switch (v.getId()) {
+            case R.id.btn_new_note:
                 createNewNote();
+                break;
+            default:
+                break;
         }
     }
 
@@ -774,12 +783,16 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
-        int itemId = item.getItemId();
+        switch (item.getItemId()) {
-        if (itemId == R.id.menu_new_folder) {
+            case R.id.menu_new_folder: {
                 showCreateOrModifyFolderDialog(true);
-        } else if (itemId == R.id.menu_export_text) {
+                break;
+            }
+            case R.id.menu_export_text: {
                 exportNoteToText();
-        } else if (itemId == R.id.menu_sync) {
+                break;
+            }
+            case R.id.menu_sync: {
                 if (isSyncMode()) {
                     if (TextUtils.equals(item.getTitle(), getString(R.string.menu_sync))) {
                         GTaskSyncService.startSync(this);
@@ -789,12 +802,21 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
                 } else {
                     startPreferenceActivity();
                 }
-        } else if (itemId == R.id.menu_setting) {
+                break;
+            }
+            case R.id.menu_setting: {
                 startPreferenceActivity();
-        } else if (itemId == R.id.menu_new_note) {
+                break;
+            }
+            case R.id.menu_new_note: {
                 createNewNote();
-        } else if (itemId == R.id.menu_search) {
+                break;
+            }
+            case R.id.menu_search:
                 onSearchRequested();
+                break;
+            default:
+                break;
         }
         return true;
     }

src/Notes-master3/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java

@@ -1,19 +1,3 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
  
 import android.content.Context;
@@ -23,6 +7,7 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.CursorAdapter;
  
+ 
 import net.micode.notes.data.Notes;
  
 import java.util.Collection;
@@ -31,55 +16,94 @@ import java.util.HashSet;
 import java.util.Iterator;
  
  
+/*
+ * 功能：直译为便签表连接器，继承了CursorAdapter，它为cursor和ListView提供了连接的桥梁。
+ *     所以NotesListAdapter实现的是鼠标和编辑便签链接的桥梁
+ */
 public class NotesListAdapter extends CursorAdapter {
     private static final String TAG = "NotesListAdapter";
     private Context mContext;
     private HashMap<Integer, Boolean> mSelectedIndex;
-    private int mNotesCount;
+    private int mNotesCount;    //便签数
-    private boolean mChoiceMode;
+    private boolean mChoiceMode;   //选择模式标记
  
+    /*
+     * 桌面widget的属性，包括编号和类型
+     */
     public static class AppWidgetAttribute {
         public int widgetId;
         public int widgetType;
     };
  
+    /*
+     * 函数功能：初始化便签链接器
+     * 函数实现：根据传进来的内容设置相关变量
+     */
     public NotesListAdapter(Context context) {
-        super(context, null);
+        super(context, null);  //父类对象置空
-        mSelectedIndex = new HashMap<Integer, Boolean>();
+        mSelectedIndex = new HashMap<Integer, Boolean>();  //新建选项下标的hash表
         mContext = context;
         mNotesCount = 0;
     }
  
     @Override
+    /*
+     * 函数功能：新建一个视图来存储光标所指向的数据
+     * 函数实现：使用兄弟类NotesListItem新建一个项目选项
+     */
     public View newView(Context context, Cursor cursor, ViewGroup parent) {
         return new NotesListItem(context);
     }
  
+    /*
+     * 函数功能：将已经存在的视图和鼠标指向的数据进行捆绑
+     * 函数实现：如下注释
+     */
     @Override
     public void bindView(View view, Context context, Cursor cursor) {
         if (view instanceof NotesListItem) {
+        	//若view是NotesListItem的一个实例
             NoteItemData itemData = new NoteItemData(context, cursor);
             ((NotesListItem) view).bind(context, itemData, mChoiceMode,
                     isSelectedItem(cursor.getPosition()));
+           //则新建一个项目选项并且用bind跟将view和鼠标，内容，便签数据捆绑在一起
         }
     }
  
+    /*
+     * 函数功能：设置勾选框
+     * 函数实现：如下注释
+     */
     public void setCheckedItem(final int position, final boolean checked) {
         mSelectedIndex.put(position, checked);
+        //根据定位和是否勾选设置下标
         notifyDataSetChanged();
+        //在修改后刷新activity
     }
  
+    /*
+     * 函数功能：判断单选按钮是否勾选
+     */
     public boolean isInChoiceMode() {
         return mChoiceMode;
     }
  
+    /*
+     * 函数功能：设置单项选项框
+     * 函数实现：重置下标并且根据参数mode设置选项
+     */
     public void setChoiceMode(boolean mode) {
         mSelectedIndex.clear();
         mChoiceMode = mode;
     }
  
+    /*
+     * 函数功能：选择全部选项
+     * 函数实现：如下注释
+     */
     public void selectAll(boolean checked) {
         Cursor cursor = getCursor();
+        //获取光标位置
         for (int i = 0; i < getCount(); i++) {
             if (cursor.moveToPosition(i)) {
                 if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) {
@@ -87,30 +111,47 @@ public class NotesListAdapter extends CursorAdapter {
                 }
             }
         }
+        //遍历所有光标可用的位置在判断为便签类型之后勾选单项框
     }
  
+    /*
+     * 函数功能：建立选择项的下标列表
+     * 函数实现：如下注释
+     */
     public HashSet<Long> getSelectedItemIds() {
         HashSet<Long> itemSet = new HashSet<Long>();
+        //建立hash表
         for (Integer position : mSelectedIndex.keySet()) {
+        	//遍历所有的关键
             if (mSelectedIndex.get(position) == true) {
+            	//若光标位置可用
                 Long id = getItemId(position);
                 if (id == Notes.ID_ROOT_FOLDER) {
+                	//原文件不需要添加
                     Log.d(TAG, "Wrong item id, should not happen");
                 } else {
                     itemSet.add(id);
                 }
+                //则将id该下标假如选项集合中
+                
             }
         }
  
         return itemSet;
     }
  
+    /*
+     * 函数功能：建立桌面Widget的选项表
+     * 函数实现：如下注释
+     */
     public HashSet<AppWidgetAttribute> getSelectedWidget() {
         HashSet<AppWidgetAttribute> itemSet = new HashSet<AppWidgetAttribute>();
         for (Integer position : mSelectedIndex.keySet()) {
             if (mSelectedIndex.get(position) == true) {
                 Cursor c = (Cursor) getItem(position);
+                //以上4句和getSelectedItemIds一样，不再重复
                 if (c != null) {
+                	//光标位置可用的话就建立新的Widget属性并编辑下标和类型，最后添加到选项集中
                     AppWidgetAttribute widget = new AppWidgetAttribute();
                     NoteItemData item = new NoteItemData(mContext, c);
                     widget.widgetId = item.getWidgetId();
@@ -128,26 +169,42 @@ public class NotesListAdapter extends CursorAdapter {
         return itemSet;
     }
  
+    /*
+     * 函数功能：获取选项个数
+     * 函数实现：如下注释
+     */
     public int getSelectedCount() {
         Collection<Boolean> values = mSelectedIndex.values();
+        //首先获取选项下标的值
         if (null == values) {
             return 0;
         }
         Iterator<Boolean> iter = values.iterator();
+        //初始化叠加器
         int count = 0;
         while (iter.hasNext()) {
             if (true == iter.next()) {
+            	//若value值为真计数+1
                 count++;
             }
         }
         return count;
     }
  
+    /*
+     * 函数功能：判断是否全部选中
+     * 函数实现：如下注释
+     */
     public boolean isAllSelected() {
         int checkedCount = getSelectedCount();
         return (checkedCount != 0 && checkedCount == mNotesCount);
+        //获取选项数看是否等于便签的个数
     }
  
+    /*
+     * 函数功能：判断是否为选项表
+     * 函数实现：通过传递的下标来确定
+     */
     public boolean isSelectedItem(final int position) {
         if (null == mSelectedIndex.get(position)) {
             return false;
@@ -156,29 +213,45 @@ public class NotesListAdapter extends CursorAdapter {
     }
  
     @Override
+    /*
+     * 函数功能：在activity内容发生局部变动的时候回调该函数计算便签的数量
+     * 函数实现：如下注释
+     */
     protected void onContentChanged() {
         super.onContentChanged();
+        //执行基类函数
         calcNotesCount();
     }
  
     @Override
+    /*
+     * 函数功能：在activity光标发生局部变动的时候回调该函数计算便签的数量
+     */
     public void changeCursor(Cursor cursor) {
         super.changeCursor(cursor);
+      //执行基类函数
         calcNotesCount();
     }
  
+    /*
+     * 函数功能：计算便签数量
+     * 
+     */
     private void calcNotesCount() {
         mNotesCount = 0;
         for (int i = 0; i < getCount(); i++) {
+        	//获取总数同时遍历
             Cursor c = (Cursor) getItem(i);
             if (c != null) {
                 if (NoteItemData.getNoteType(c) == Notes.TYPE_NOTE) {
                     mNotesCount++;
+                   //若该位置不为空并且文本类型为便签就+1
                 }
             } else {
                 Log.e(TAG, "Invalid cursor");
                 return;
             }
+            //否则报错
         }
     } 
 }

src/Notes-master3/app/src/main/java/net/micode/notes/ui/NotesListItem.java

@@ -1,19 +1,3 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
  
 import android.content.Context;
@@ -30,37 +14,47 @@ import net.micode.notes.tool.DataUtils;
 import net.micode.notes.tool.ResourceParser.NoteItemBgResources;
  
  
+/**
+ * 创建便签列表项目选项
+ */
 public class NotesListItem extends LinearLayout {
-    private ImageView mAlert;
+    private ImageView mAlert;//闹钟图片
-    private TextView mTitle;
+    private TextView mTitle;  //标题
-    private TextView mTime;
+    private TextView mTime;   //时间
-    private TextView mCallName;
+    private TextView mCallName;    //
-    private NoteItemData mItemData;
+    private NoteItemData mItemData; //标签数据
-    private CheckBox mCheckBox;
+    private CheckBox mCheckBox;    //打钩框
  
+    /**
+    *初始化基本信息
+    */
     public NotesListItem(Context context) {
-        super(context);
+        super(context);   //super()它的主要作用是调整调用父类构造函数的顺序
-        inflate(context, R.layout.note_item, this);
+        inflate(context, R.layout.note_item, this);//Inflate可用于将一个xml中定义的布局控件找出来,这里的xml是r。layout
+        //findViewById用于从contentView中查找指定ID的View，转换出来的形式根据需要而定;
         mAlert = (ImageView) findViewById(R.id.iv_alert_icon);
         mTitle = (TextView) findViewById(R.id.tv_title);
         mTime = (TextView) findViewById(R.id.tv_time);
         mCallName = (TextView) findViewById(R.id.tv_name);
         mCheckBox = (CheckBox) findViewById(android.R.id.checkbox);
     }
-
+  ///根据data的属性对各个控件的属性的控制，主要是可见性Visibility，内容setText，格式setTextAppearance
     public void bind(Context context, NoteItemData data, boolean choiceMode, boolean checked) {
         if (choiceMode && data.getType() == Notes.TYPE_NOTE) {
-            mCheckBox.setVisibility(View.VISIBLE);
+            mCheckBox.setVisibility(View.VISIBLE);  ///设置可见行为可见
-            mCheckBox.setChecked(checked);
+            mCheckBox.setChecked(checked);         ///格子打钩
         } else {
             mCheckBox.setVisibility(View.GONE);
         }
  
         mItemData = data;
+        ///设置控件属性，一共三种情况，由data的id和父id是否与保存到文件夹的id一致来决定
         if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
             mCallName.setVisibility(View.GONE);
             mAlert.setVisibility(View.VISIBLE);
+            //设置该textview的style
             mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
+            //settext为设置内容
             mTitle.setText(context.getString(R.string.call_record_folder_name)
                     + context.getString(R.string.format_folder_files_count, data.getNotesCount()));
             mAlert.setImageResource(R.drawable.call_record);
@@ -69,8 +63,9 @@ public class NotesListItem extends LinearLayout {
             mCallName.setText(data.getCallName());
             mTitle.setTextAppearance(context,R.style.TextAppearanceSecondaryItem);
             mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
+            ///关于闹钟的设置
             if (data.hasAlert()) {
-                mAlert.setImageResource(R.drawable.clock);
+                mAlert.setImageResource(R.drawable.clock);//图片来源的设置
                 mAlert.setVisibility(View.VISIBLE);
             } else {
                 mAlert.setVisibility(View.GONE);
@@ -78,7 +73,7 @@ public class NotesListItem extends LinearLayout {
         } else {
             mCallName.setVisibility(View.GONE);
             mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
-
+            ///设置title格式
             if (data.getType() == Notes.TYPE_FOLDER) {
                 mTitle.setText(data.getSnippet()
                         + context.getString(R.string.format_folder_files_count,
@@ -87,35 +82,38 @@ public class NotesListItem extends LinearLayout {
             } else {
                 mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
                 if (data.hasAlert()) {
-                    mAlert.setImageResource(R.drawable.clock);
+                    mAlert.setImageResource(R.drawable.clock);///设置图片来源
                     mAlert.setVisibility(View.VISIBLE);
                 } else {
                     mAlert.setVisibility(View.GONE);
                 }
             }
         }
-        mTime.setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate()));
+        ///设置内容，获取相关时间，从data里编辑的日期中获取
+        mTime. setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate()));
        
         setBackground(data);
     }
-
+    //根据data的文件属性来设置背景
     private void setBackground(NoteItemData data) {
         int id = data.getBgColorId();
+        //，若是note型文件，则4种情况，对于4种不同情况的背景来源
         if (data.getType() == Notes.TYPE_NOTE) {
+        	//单个数据并且只有一个子文件夹
             if (data.isSingle() || data.isOneFollowingFolder()) {
                 setBackgroundResource(NoteItemBgResources.getNoteBgSingleRes(id));
-            } else if (data.isLast()) {
+            } else if (data.isLast()) {//是最后一个数据
                 setBackgroundResource(NoteItemBgResources.getNoteBgLastRes(id));
-            } else if (data.isFirst() || data.isMultiFollowingFolder()) {
+            } else if (data.isFirst() || data.isMultiFollowingFolder()) {//是一个数据并有多个子文件夹
                 setBackgroundResource(NoteItemBgResources.getNoteBgFirstRes(id));
             } else {
                 setBackgroundResource(NoteItemBgResources.getNoteBgNormalRes(id));
             }
         } else {
+        	//若不是note直接调用文件夹的背景来源
             setBackgroundResource(NoteItemBgResources.getFolderBgRes());
         }
     }
-
     public NoteItemData getItemData() {
         return mItemData;
     }

src/Notes-master3/app/src/main/java/net/micode/notes/ui/NotesPreferenceActivity.java

@@ -1,19 +1,3 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.ui;
  
 import android.accounts.Account;
@@ -47,66 +31,78 @@ import net.micode.notes.data.Notes;
 import net.micode.notes.data.Notes.NoteColumns;
 import net.micode.notes.gtask.remote.GTaskSyncService;
  
-
+/*
+ *该类功能：NotesPreferenceActivity，在小米便签中主要实现的是对背景颜色和字体大小的数据储存。
+ *       继承了PreferenceActivity主要功能为对系统信息和配置进行自动保存的Activity
+ */
 public class NotesPreferenceActivity extends PreferenceActivity {
-    public static final String PREFERENCE_NAME = "notes_preferences";
+    public static final String PREFERENCE_NAME = "notes_preferences";//优先名 
-
+    public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";//同步账号
-    public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";
+    public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";//同步时间
-
-    public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";
-
     public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";
-
+    private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";//同步密码
-    private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";
+    private static final String AUTHORITIES_FILTER_KEY = "authorities";//本地密码
-
+    private PreferenceCategory mAccountCategory;//账户分组
-    private static final String AUTHORITIES_FILTER_KEY = "authorities";
+    private GTaskReceiver mReceiver;//同步任务接收器
-
+    private Account[] mOriAccounts;//账户
-    private PreferenceCategory mAccountCategory;
+    private boolean mHasAddedAccount;//账户的hash标记
-
-    private GTaskReceiver mReceiver;
-
-    private Account[] mOriAccounts;
-
-    private boolean mHasAddedAccount;
  
     @Override
+    /*创建一个activity*/
     protected void onCreate(Bundle icicle) {
+    	//先执行父类的创建函数
         super.onCreate(icicle);
         
         /* using the app icon for navigation */
         getActionBar().setDisplayHomeAsUpEnabled(true);
+        //给左上角图标的左边加上一个返回的图标 
  
         addPreferencesFromResource(R.xml.preferences);
+        //添加xml来源并显示 xml
         mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);
+        //根据同步账户关键码来初始化分组
         mReceiver = new GTaskReceiver();
         IntentFilter filter = new IntentFilter();
         filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME);
         registerReceiver(mReceiver, filter);
+        //初始化同步组件
  
         mOriAccounts = null;
         View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);
+        //获取listvivew，ListView的作用:用于列出所有选择 
         getListView().addHeaderView(header, null, true);
+        //在listview组件上方添加其他组件
     }
  
     @Override
+    /*
+     * 函数功能：activity交互功能的实现，用于接受用户的输入
+     * 函数实现：如下注释
+     */
     protected void onResume() {
+    	//先执行父类 的交互实现
         super.onResume();
  
         // need to set sync account automatically if user has added a new
         // account
         if (mHasAddedAccount) {
+        	//若用户新加了账户则自动设置同步账户
             Account[] accounts = getGoogleAccounts();
+            //获取google同步账户
             if (mOriAccounts != null && accounts.length > mOriAccounts.length) {
+                //若原账户不为空且当前账户有增加
             	for (Account accountNew : accounts) {
                     boolean found = false;
                     for (Account accountOld : mOriAccounts) {
                         if (TextUtils.equals(accountOld.name, accountNew.name)) {
+                        	//更新账户
                             found = true;
                             break;
                         }
                     }
                     if (!found) {
                         setSyncAccount(accountNew.name);
+                        //若是没有找到旧的账户，那么同步账号中就只添加新账户
                         break;
                     }
                 }
@@ -114,35 +110,52 @@ public class NotesPreferenceActivity extends PreferenceActivity {
         }
  
         refreshUI();
+        //刷新标签界面
     }
  
     @Override
+    /*
+     * 函数功能：销毁一个activity
+     * 函数实现：如下注释
+     */
     protected void onDestroy() {
         if (mReceiver != null) {
             unregisterReceiver(mReceiver);
+            //注销接收器
         }
         super.onDestroy();
+        //执行父类的销毁动作
     }
  
+    /*
+     * 函数功能：重新设置账户信息
+     * 函数实现：如下注释
+     */
     private void loadAccountPreference() {
         mAccountCategory.removeAll();
-
+        //销毁所有的分组
         Preference accountPref = new Preference(this);
+        //建立首选项
         final String defaultAccount = getSyncAccountName(this);
         accountPref.setTitle(getString(R.string.preferences_account_title));
         accountPref.setSummary(getString(R.string.preferences_account_summary));
+        //设置首选项的大标题和小标题
         accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
             public boolean onPreferenceClick(Preference preference) {
+            	//建立监听器
                 if (!GTaskSyncService.isSyncing()) {
                     if (TextUtils.isEmpty(defaultAccount)) {
                         // the first time to set account
+                    	//若是第一次建立账户显示选择账户提示对话框
                         showSelectAccountAlertDialog();
                     } else {
                         // if the account has already been set, we need to promp
                         // user about the risk
+                    	//若是已经建立则显示修改对话框并进行修改操作
                         showChangeAccountConfirmAlertDialog();
                     }
                 } else {
+                	//若在没有同步的情况下，则在toast中显示不能修改
                     Toast.makeText(NotesPreferenceActivity.this,
                             R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT)
                             .show();
@@ -151,21 +164,29 @@ public class NotesPreferenceActivity extends PreferenceActivity {
             }
         });
  
+        //根据新建首选项编辑新的账户分组
         mAccountCategory.addPreference(accountPref);
     }
  
+    /*
+     *函数功能：设置按键的状态和最后同步的时间
+     *函数实现：如下注释 
+     */
     private void loadSyncButton() {
         Button syncButton = (Button) findViewById(R.id.preference_sync_button);
         TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
-
+        //获取同步按钮控件和最终同步时间的的窗口
         // set button state
+        //设置按钮的状态
         if (GTaskSyncService.isSyncing()) {
+        	//若是在同步状态下
             syncButton.setText(getString(R.string.preferences_button_sync_cancel));
             syncButton.setOnClickListener(new View.OnClickListener() {
                 public void onClick(View v) {
                     GTaskSyncService.cancelSync(NotesPreferenceActivity.this);
                 }
             });
+            //设置按钮显示的文本为“取消同步”以及监听器
         } else {
             syncButton.setText(getString(R.string.preferences_button_sync_immediately));
             syncButton.setOnClickListener(new View.OnClickListener() {
@@ -173,50 +194,61 @@ public class NotesPreferenceActivity extends PreferenceActivity {
                     GTaskSyncService.startSync(NotesPreferenceActivity.this);
                 }
             });
+          //若是不同步则设置按钮显示的文本为“立即同步”以及对应监听器
         }
         syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));
+        //设置按键可用还是不可用
  
         // set last sync time
+        // 设置最终同步时间
         if (GTaskSyncService.isSyncing()) {
+        	//若是在同步的情况下
             lastSyncTimeView.setText(GTaskSyncService.getProgressString());
             lastSyncTimeView.setVisibility(View.VISIBLE);
+            // 根据当前同步服务器设置时间显示框的文本以及可见性
         } else {
+        	//若是非同步情况
             long lastSyncTime = getLastSyncTime(this);
             if (lastSyncTime != 0) {
                 lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time,
                         DateFormat.format(getString(R.string.preferences_last_sync_time_format),
                                 lastSyncTime)));
                 lastSyncTimeView.setVisibility(View.VISIBLE);
+                //则根据最后同步时间的信息来编辑时间显示框的文本内容和可见性
             } else {
+            	 //若时间为空直接设置为不可见状态
                 lastSyncTimeView.setVisibility(View.GONE);
             }
         }
     }
-
+     /*函数功能：刷新标签界面*/
     private void refreshUI() {
         loadAccountPreference();
         loadSyncButton();
     }
  
+    /*函数功能：显示账户选择的对话框并进行账户的设置*/
     private void showSelectAccountAlertDialog() {
         AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
+        //创建一个新的对话框
  
         View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
         TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
         titleTextView.setText(getString(R.string.preferences_dialog_select_account_title));
         TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
         subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips));
-
+        //设置标题以及子标题的内容
         dialogBuilder.setCustomTitle(titleView);
         dialogBuilder.setPositiveButton(null, null);
-
+        //设置对话框的自定义标题，建立一个YES的按钮
         Account[] accounts = getGoogleAccounts();
         String defAccount = getSyncAccountName(this);
-
+        //获取同步账户信息
         mOriAccounts = accounts;
         mHasAddedAccount = false;
  
         if (accounts.length > 0) {
+        	//若账户不为空
             CharSequence[] items = new CharSequence[accounts.length];
             final CharSequence[] itemMapping = items;
             int checkedItem = -1;
@@ -224,83 +256,110 @@ public class NotesPreferenceActivity extends PreferenceActivity {
             for (Account account : accounts) {
                 if (TextUtils.equals(account.name, defAccount)) {
                     checkedItem = index;
+                    //在账户列表中查询到所需账户
                 }
                 items[index++] = account.name;
             }
             dialogBuilder.setSingleChoiceItems(items, checkedItem,
+            		//在对话框建立一个单选的复选框
                     new DialogInterface.OnClickListener() {
                         public void onClick(DialogInterface dialog, int which) {
                             setSyncAccount(itemMapping[which].toString());
                             dialog.dismiss();
+                            //取消对话框
                             refreshUI();
                         }
+                        //设置点击后执行的事件，包括检录新同步账户和刷新标签界面
                     });
+            //建立对话框网络版的监听器
         }
  
         View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);
         dialogBuilder.setView(addAccountView);
+        //给新加账户对话框设置自定义样式
  
         final AlertDialog dialog = dialogBuilder.show();
+        //显示对话框
         addAccountView.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {
                 mHasAddedAccount = true;
+                //将新加账户的hash置true
                 Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");
+                //建立网络建立组件
                 intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] {
                     "gmail-ls"
                 });
                 startActivityForResult(intent, -1);
+                //跳回上一个选项
                 dialog.dismiss();
             }
         });
+        //建立新加账户对话框的监听器
     }
  
+    /*函数功能：显示账户选择对话框和相关账户操作*/
     private void showChangeAccountConfirmAlertDialog() {
         AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
-
+        //创建一个新的对话框
         View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
         TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
         titleTextView.setText(getString(R.string.preferences_dialog_change_account_title,
                 getSyncAccountName(this)));
         TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
         subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg));
+        //根据同步修改的账户信息设置标题以及子标题的内容
         dialogBuilder.setCustomTitle(titleView);
-
+      //设置对话框的自定义标题
         CharSequence[] menuItemArray = new CharSequence[] {
                 getString(R.string.preferences_menu_change_account),
                 getString(R.string.preferences_menu_remove_account),
                 getString(R.string.preferences_menu_cancel)
         };
+        //定义一些标记字符串
         dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() {
+        	//设置对话框要显示的一个list，用于显示几个命令时,即change，remove，cancel
             public void onClick(DialogInterface dialog, int which) {
+            	//按键功能，由which来决定
                 if (which == 0) {
+                	//进入账户选择对话框
                     showSelectAccountAlertDialog();
                 } else if (which == 1) {
+                	//删除账户并且跟新便签界面
                     removeSyncAccount();
                     refreshUI();
                 }
             }
         });
         dialogBuilder.show();
+        //显示对话框
     }
  
+    /*函数功能：获取谷歌账户*/
     private Account[] getGoogleAccounts() {
         AccountManager accountManager = AccountManager.get(this);
         return accountManager.getAccountsByType("com.google");
     }
  
+    /*函数功能：设置同步账户*/
     private void setSyncAccount(String account) {
         if (!getSyncAccountName(this).equals(account)) {
+        	//假如该账号不在同步账号列表中
             SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
             SharedPreferences.Editor editor = settings.edit();
+            //编辑共享的首选项
             if (account != null) {
                 editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account);
             } else {
                 editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
             }
+            //将该账号加入到首选项中
+            
             editor.commit();
+            //提交修改的数据
+ 
             
-            // clean up last sync time
             setLastSyncTime(this, 0);
+          //将最后同步时间清零
  
             // clean up local gtask related info
             new Thread(new Runnable() {
@@ -311,23 +370,30 @@ public class NotesPreferenceActivity extends PreferenceActivity {
                     getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
                 }
             }).start();
+            //重置当地同步任务的信息
  
             Toast.makeText(NotesPreferenceActivity.this,
                     getString(R.string.preferences_toast_success_set_accout, account),
                     Toast.LENGTH_SHORT).show();
+            //将toast的文本信息置为“设置账户成功”并显示出来
         }
     }
-
+    /*函数功能：删除同步账户*/
     private void removeSyncAccount() {
         SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
         SharedPreferences.Editor editor = settings.edit();
+        //设置共享首选项
+        
         if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) {
             editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME);
+            //假如当前首选项中有账户就删除
         }
         if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) {
             editor.remove(PREFERENCE_LAST_SYNC_TIME);
+            //删除当前首选项中有账户时间
         }
         editor.commit();
+        //提交更新后的数据
         
         // clean up local gtask related info
         new Thread(new Runnable() {
@@ -338,51 +404,70 @@ public class NotesPreferenceActivity extends PreferenceActivity {
                 getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
             }
         }).start();
+      //重置当地同步任务的信息
     }
     
+    /*函数功能：获取同步账户名称*/
     public static String getSyncAccountName(Context context) {
         SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
                 Context.MODE_PRIVATE);
         return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
     }
  
+    /*函数功能：设置最终同步的时间*/
     public static void setLastSyncTime(Context context, long time) {
         SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
                 Context.MODE_PRIVATE);
         SharedPreferences.Editor editor = settings.edit();
+        // 从共享首选项中找到相关账户并获取其编辑器
         editor.putLong(PREFERENCE_LAST_SYNC_TIME, time);
         editor.commit();
+        //编辑最终同步时间并提交更新
     }
-
+    /* 函数功能：获取最终同步时间*/
     public static long getLastSyncTime(Context context) {
         SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
                 Context.MODE_PRIVATE);
         return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0);
     }
  
+    /*
+     * 函数功能：接受同步信息
+     * 函数实现：继承BroadcastReceiver
+     */
     private class GTaskReceiver extends BroadcastReceiver {
  
         @Override
         public void onReceive(Context context, Intent intent) {
             refreshUI();
             if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {
+                //获取随广播而来的Intent中的同步服务的数据
             	TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
                 syncStatus.setText(intent
                         .getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
+                //通过获取的数据在设置系统的状态
             }
  
         }
     }
  
+    /*
+     * 函数功能：处理菜单的选项
+     * 函数实现：如下注释
+     * 参数:MenuItem菜单选项
+     */
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
+        //根据选项的id选择，这里只有一个主页
             case android.R.id.home:
                 Intent intent = new Intent(this, NotesListActivity.class);
                 intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                 startActivity(intent);
                 return true;
+                //在主页情况下在创建连接组件intent，发出清空的信号并开始一个相应的activity
             default:
                 return false;
         }
     }
 }
+