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

@@ -83,25 +83,20 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
             e.printStackTrace();
             return;
         }
-         /*
-        try
+        /*try
         {
-        	// 代码区
+        	//代码区
         }
-        catch(Exception e)
-        {
-        	// 异常处理
+        catch(Exception e){
+        	//异常处理
         }
-                     代码区如果有错误，就会返回所写异常的处理。*/
+        代码区如果有错误，就会返回所写异常的处理。*/
         mPlayer = new MediaPlayer();
         if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
-            showActionDialog();
-            //弹出对话框
-            playAlarmSound();
-            //闹钟提示音激发
+            showActionDialog();//弹出对话框
+            playAlarmSound();//闹钟提示音激发
         } else {
-            finish();
-            //完成闹钟动作
+            finish();//完成闹钟动作
         }
     }
 
@@ -136,6 +131,8 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
         } catch (IllegalArgumentException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
+            //e.printStackTrace()函数功能是抛出异常， 还将显示出更深的调用信息；
+            //System.out.println(e)，这个方法打印出异常，并且输出在哪里出现的异常；
         } catch (SecurityException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
@@ -150,37 +147,48 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
 
     private void showActionDialog() {
         AlertDialog.Builder dialog = new AlertDialog.Builder(this);
-        dialog.setTitle(R.string.app_name);
-        dialog.setMessage(mSnippet);
-        dialog.setPositiveButton(R.string.notealert_ok, this);
+        //AlertDialog的构造方法全部是Protected的；
+        //所以不能直接通过new一个AlertDialog来创建出一个AlertDialog；
+        //要创建一个AlertDialog，就要用到AlertDialog.Builder中的create()方法；
+        //如这里的dialog就是新建了一个AlertDialog；
+        dialog.setTitle(R.string.app_name);//为对话框设置标题
+        dialog.setMessage(mSnippet);//为对话框设置内容
+        dialog.setPositiveButton(R.string.notealert_ok, this);//给对话框添加"Yes"按钮
         if (isScreenOn()) {
             dialog.setNegativeButton(R.string.notealert_enter, this);
-        }
+        }//对话框添加"No"按钮；
         dialog.show().setOnDismissListener(this);
     }
 
     public void onClick(DialogInterface dialog, int which) {
-        switch (which) {
+        switch (which) {//用which来选择click后下一步的操作
             case DialogInterface.BUTTON_NEGATIVE:
+                //这是取消操作；
                 Intent intent = new Intent(this, NoteEditActivity.class);
+                //实现两个类间的数据传输；
                 intent.setAction(Intent.ACTION_VIEW);
+                //设置动作属性；
                 intent.putExtra(Intent.EXTRA_UID, mNoteId);
+                //实现key-value对；
+                //EXTRA_UID为key；mNoteId为键；
                 startActivity(intent);
+                //开始动作；
                 break;
             default:
+                //这是确定操作；
                 break;
         }
     }
 
-    public void onDismiss(DialogInterface dialog) {
-        stopAlarmSound();
-        finish();
+    public void onDismiss(DialogInterface dialog) {//忽略
+        stopAlarmSound();//停止闹钟声音
+        finish();//完成该动作
     }
 
     private void stopAlarmSound() {
         if (mPlayer != null) {
-            mPlayer.stop();
-            mPlayer.release();
+            mPlayer.stop();//停止播放
+            mPlayer.release();//释放MediaPlayer对象
             mPlayer = null;
         }
     }

app/src/main/java/net/micode/notes/ui/AlarmInitReceiver.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.AlarmManager;
@@ -34,18 +18,22 @@ public class AlarmInitReceiver extends BroadcastReceiver {
             NoteColumns.ID,
             NoteColumns.ALERTED_DATE
     };
-
+    //对数据库的操作，调用标签ID和闹钟时间；
     private static final int COLUMN_ID                = 0;
     private static final int COLUMN_ALERTED_DATE      = 1;
 
     @Override
     public void onReceive(Context context, Intent intent) {
         long currentDate = System.currentTimeMillis();
+        //System.currentTimeMillis()产生一个当前的毫秒；
+        //这个毫秒其实就是自1970年1月1日0时起的毫秒数；
         Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
                 PROJECTION,
                 NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,
                 new String[] { String.valueOf(currentDate) },
+                //将long变量currentDate转化为字符串；
                 null);
+        //Cursor在这里的作用是通过查找数据库中的标签内容，找到和当前系统时间相等的标签；
 
         if (c != null) {
             if (c.moveToFirst()) {
@@ -61,5 +49,8 @@ public class AlarmInitReceiver extends BroadcastReceiver {
             }
             c.close();
         }
+        //然而通过网上查找资料发现，对于闹钟机制的启动，通常需要上面的几个步骤；
+        //如新建Intent、PendingIntent以及AlarmManager等；
+        //这里就是根据数据库里的闹钟时间创建一个闹钟机制；
     }
 }

app/src/main/java/net/micode/notes/ui/NoteItemData.java

@@ -43,6 +43,7 @@ public class NoteItemData {
             NoteColumns.LOCKED
     };
 
+    //常量标记和数据就不一一标记了，意义翻译基本就知道
     private static final int ID_COLUMN                    = 0;
     private static final int ALERTED_DATE_COLUMN          = 1;
     private static final int BG_COLOR_ID_COLUMN           = 2;
@@ -80,10 +81,10 @@ 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
     private boolean mIsLocked;
 
-    public NoteItemData(Context context, Cursor cursor) {
+    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);
@@ -101,10 +102,10 @@ public class NoteItemData {
 
         mIsLocked = !cursor.getString(LOCKED_COLUMN).equals(UNLOCKED);
 
-        mPhoneNumber = "";
+        mPhoneNumber = "";//getxxx为转换格式
         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;
@@ -117,26 +118,30 @@ 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");
                 }
             }
@@ -223,6 +228,7 @@ 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));
     }

app/src/main/java/net/micode/notes/ui/NotesListAdapter.java

@@ -30,54 +30,87 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
 
-
+/*
+ * 功能：直译为便签表连接器，继承了CursorAdapter，它为cursor和ListView提供了连接的桥梁。
+ *     所以NotesListAdapter实现的是鼠标和编辑便签链接的桥梁
+ */
 public class NotesListAdapter extends CursorAdapter {
     private static final String TAG = "NotesListAdapter";
     private Context mContext;
     private HashMap<Integer, Boolean> mSelectedIndex;
-    private int mNotesCount;
-    private boolean mChoiceMode;
+    private int mNotesCount;//便签数
+    private boolean mChoiceMode;//选择模式标记
 
+    /*
+     * 桌面widget的属性，包括编号和类型
+     */
     public static class AppWidgetAttribute {
         public int widgetId;
         public int widgetType;
     };
 
+    /*
+     * 函数功能：初始化便签链接器
+     * 函数实现：根据传进来的内容设置相关变量
+     */
     public NotesListAdapter(Context context) {
-        super(context, null);
-        mSelectedIndex = new HashMap<Integer, Boolean>();
+        super(context, null);//父类对象置空
+        mSelectedIndex = new HashMap<Integer, Boolean>();//新建选项下标的hash表
         mContext = context;
         mNotesCount = 0;
     }
 
     @Override
+    /*
+     * 函数功能：新建一个视图来存储光标所指向的数据
+     * 函数实现：使用兄弟类NotesListItem新建一个项目选项
+     */
     public View newView(Context context, Cursor cursor, ViewGroup parent) {
         return new NotesListItem(context);
     }
 
     @Override
+    /*
+     * 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
+     */
     public void bindView(View view, Context context, Cursor cursor) {
-        if (view instanceof NotesListItem) {
+        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()));
+                    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);
-        notifyDataSetChanged();
+        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();
         for (int i = 0; i < getCount(); i++) {
@@ -86,26 +119,30 @@ public class NotesListAdapter extends CursorAdapter {
                     setCheckedItem(i, checked);
                 }
             }
-        }
+        }//遍历所有光标可用的位置在判断为便签类型之后勾选单项框
     }
 
+    /*
+     * 函数功能：建立选择项的下标列表
+     * 函数实现：如下注释
+     */
     public HashSet<Long> getSelectedItemIds() {
-        HashSet<Long> itemSet = new HashSet<Long>();
-        for (Integer position : mSelectedIndex.keySet()) {
-            if (mSelectedIndex.get(position) == true) {
+        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) {
+                if (id == Notes.ID_ROOT_FOLDER) {//原文件不需要添加
                     Log.d(TAG, "Wrong item id, should not happen");
                 } else {
                     itemSet.add(id);
-                }
-
+                }//则将id该下标假如选项集合中
             }
         }
 
         return itemSet;
     }
 
+
     public HashSet<Long> getSelectedFolderIds() {
         HashSet<Long> itemSet = new HashSet<Long>();
         for (Integer position : mSelectedIndex.keySet()) {
@@ -126,12 +163,16 @@ public class NotesListAdapter extends CursorAdapter {
         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);
-                if (c != null) {
+                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();
@@ -159,9 +200,6 @@ public class NotesListAdapter extends CursorAdapter {
                     if(item.getIsLocked()){
                         return true;
                     }
-                    /**
-                     * Don't close cursor here, only the adapter could close it
-                     */
                 } else {
                     Log.e(TAG, "Invalid cursor");
                     return true;
@@ -171,26 +209,38 @@ public class NotesListAdapter extends CursorAdapter {
         return false;
     }
 
+    /*
+     * 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();
+        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();
+        Iterator<Boolean> iter = values.iterator();//初始化叠加器
         int count = 0;
         while (iter.hasNext()) {
-            if (true == iter.next()) {
+            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);
+        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;
@@ -199,29 +249,41 @@ 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();
+        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);
+        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++) {
+        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++;
+                    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
         }
     }
 }

app/src/main/java/net/micode/notes/ui/NotesListItem.java

@@ -29,18 +29,21 @@ import net.micode.notes.data.Notes;
 import net.micode.notes.tool.DataUtils;
 import net.micode.notes.tool.ResourceParser.NoteItemBgResources;
 
-
+//创建便签列表项目选项
 public class NotesListItem extends LinearLayout {
-    private ImageView mAlert;
-    private TextView mTitle;
-    private TextView mTime;
+    private ImageView mAlert;//闹钟图片
+    private TextView mTitle;//标题
+    private TextView mTime;//时间
     private TextView mCallName;
-    private NoteItemData mItemData;
-    private CheckBox mCheckBox;
+    private NoteItemData mItemData;//标签数据
+    private CheckBox mCheckBox;//打钩框
+
 
+    /*初始化基本信息*/
     public NotesListItem(Context context) {
-        super(context);
-        inflate(context, R.layout.note_item, this);
+        super(context);//super()它的主要作用是调整调用父类构造函数的顺序
+        inflate(context, R.layout.note_item, this);//Inflate可用于将一个xml中定义的布局控件找出来,这里的xml是r。layout
+        //findViewById用于从contentView中查找指定ID的View，转换出来的形式根据需要而定;
         mAlert = (ImageView) findViewById(R.id.iv_alert_icon);
         mTitle = (TextView) findViewById(R.id.tv_title);
         mTime = (TextView) findViewById(R.id.tv_time);
@@ -48,19 +51,23 @@ public class NotesListItem extends LinearLayout {
         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.setChecked(checked);
+            mCheckBox.setVisibility(View.VISIBLE);//设置可见行为可见
+            mCheckBox.setChecked(checked);//格子打钩
         } else {
             mCheckBox.setVisibility(View.GONE);
         }
 
         mItemData = data;
+        //设置控件属性，一共三种情况，由data的id和父id是否与保存到文件夹的id一致来决定
         if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
             mCallName.setVisibility(View.GONE);
             mAlert.setVisibility(View.VISIBLE);
+            //设置该textview的style
             mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
+            //settext为设置内容
             mTitle.setText(context.getString(R.string.call_record_folder_name)
                     + context.getString(R.string.format_folder_files_count, data.getNotesCount()));
             mAlert.setImageResource(R.drawable.call_record);
@@ -69,8 +76,9 @@ 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);
@@ -78,6 +86,7 @@ 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()
@@ -87,20 +96,23 @@ 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);
                 }
             }
         }
+        //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
 //        setBackgroundResource(R.color.user_query_highlight);
 //        setBackgroundColor(0xFF888888);
 //        setX(500);
@@ -109,14 +121,15 @@ public class NotesListItem extends LinearLayout {
         if (data.getType() == Notes.TYPE_NOTE) {
             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());
         }
     }

app/src/main/java/net/micode/notes/ui/NotesPreferenceActivity.java

@@ -47,66 +47,79 @@ import net.micode.notes.data.Notes;
 import net.micode.notes.data.Notes.NoteColumns;
 import net.micode.notes.gtask.remote.GTaskSyncService;
 
-
+/*
+ *该类功能：NotesPreferenceActivity，在小米便签中主要实现的是对背景颜色和字体大小的数据储存。
+ *       继承了PreferenceActivity主要功能为对系统信息和配置进行自动保存的Activity
+ */
 public class NotesPreferenceActivity extends PreferenceActivity {
     public static final String PREFERENCE_NAME = "notes_preferences";
-
+    //优先名
     public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";
-
+    //同步账号
     public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";
-
+    //同步时间
     public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";
 
     private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";
-
+    //同步密码
     private static final String AUTHORITIES_FILTER_KEY = "authorities";
-
+    //本地密码
     private PreferenceCategory mAccountCategory;
-
+    //账户分组
     private GTaskReceiver mReceiver;
-
+    //同步任务接收器
     private Account[] mOriAccounts;
-
+    //账户
     private boolean mHasAddedAccount;
-
+    //账户的hash标记
     @Override
-    protected void onCreate(Bundle icicle) {
+    /*
+     *函数功能：创建一个activity，在函数里要完成所有的正常静态设置
+     *参数：Bundle icicle：存放了 activity 当前的状态
+     *函数实现：如下注释
+     */
+    protected void onCreate(Bundle icicle) {//先执行父类的创建函数
         super.onCreate(icicle);
 
         /* using the app icon for navigation */
         getActionBar().setDisplayHomeAsUpEnabled(true);
-
-        addPreferencesFromResource(R.xml.preferences);
-        mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);
+        //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);
+        registerReceiver(mReceiver, filter);//初始化同步组件
 
         mOriAccounts = null;
-        View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);
-        getListView().addHeaderView(header, null, true);
+        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
-    protected void onResume() {
+    /*
+     * 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) {
-            Account[] accounts = getGoogleAccounts();
-            if (mOriAccounts != null && accounts.length > mOriAccounts.length) {
+        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);
+                        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 +127,48 @@ 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);
+            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();
-
-        Preference accountPref = new Preference(this);
+        //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));
+        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) {
+            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();
@@ -150,73 +176,92 @@ public class NotesPreferenceActivity extends PreferenceActivity {
                 return true;
             }
         });
-
+        //根据新建首选项编辑新的账户分组
         mAccountCategory.addPreference(accountPref);
     }
 
+    /*
+     *函数功能：设置按键的状态和最后同步的时间
+     *函数实现：如下注释
+     */
     private void loadSyncButton() {
         Button syncButton = (Button) findViewById(R.id.preference_sync_button);
         TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
+        //获取同步按钮控件和最终同步时间的的窗口
+        //设置按钮的状态
 
         // set button state
-        if (GTaskSyncService.isSyncing()) {
+        if (GTaskSyncService.isSyncing()) {//若是在同步状态下
             syncButton.setText(getString(R.string.preferences_button_sync_cancel));
             syncButton.setOnClickListener(new View.OnClickListener() {
                 public void onClick(View v) {
                     GTaskSyncService.cancelSync(NotesPreferenceActivity.this);
                 }
             });
+            //设置按钮显示的文本为“取消同步”以及监听器
         } else {
             syncButton.setText(getString(R.string.preferences_button_sync_immediately));
             syncButton.setOnClickListener(new View.OnClickListener() {
                 public void onClick(View v) {
                     GTaskSyncService.startSync(NotesPreferenceActivity.this);
+                    //若是不同步则设置按钮显示的文本为“立即同步”以及对应监听器
                 }
             });
         }
         syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));
-
+        //设置按键可用还是不可用
         // set last sync time
-        if (GTaskSyncService.isSyncing()) {
+        // 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);
-        } else {
+            lastSyncTimeView.setVisibility(View.VISIBLE);// 根据当前同步服务器设置时间显示框的文本以及可见性
+        } else {//若是非同步情况
             long lastSyncTime = getLastSyncTime(this);
             if (lastSyncTime != 0) {
                 lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time,
                         DateFormat.format(getString(R.string.preferences_last_sync_time_format),
                                 lastSyncTime)));
                 lastSyncTimeView.setVisibility(View.VISIBLE);
+                //则根据最后同步时间的信息来编辑时间显示框的文本内容和可见性
             } else {
+                //若时间为空直接设置为不可见状态
                 lastSyncTimeView.setVisibility(View.GONE);
             }
         }
     }
 
+    /*
+     *函数功能：刷新标签界面
+     *函数实现：调用上文设置账号和设置按键两个函数来实现
+     */
     private void refreshUI() {
         loadAccountPreference();
         loadSyncButton();
     }
 
+    /*
+     * 函数功能：显示账户选择的对话框并进行账户的设置
+     * 函数实现：如下注释
+     */
     private void showSelectAccountAlertDialog() {
-        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
+        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));
+        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);
+        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);
+        String defAccount = getSyncAccountName(this);//获取同步账户信息
 
         mOriAccounts = accounts;
         mHasAddedAccount = false;
 
-        if (accounts.length > 0) {
+        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 +269,110 @@ 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,
+            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);
+        dialogBuilder.setView(addAccountView);//给新加账户对话框设置自定义样式
 
-        final AlertDialog dialog = dialogBuilder.show();
+        final AlertDialog dialog = dialogBuilder.show(); //显示对话框
         addAccountView.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {
-                mHasAddedAccount = true;
-                Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");
+                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);
+                startActivityForResult(intent, -1);//跳回上一个选项
                 dialog.dismiss();
             }
         });
+        //建立新加账户对话框的监听器
     }
 
+    /*
+     * 函数功能：显示账户选择对话框和相关账户操作
+     * 函数实现：如下注释
+     */
     private void showChangeAccountConfirmAlertDialog() {
         AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
-
+        //创建一个新的对话框
         View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
         TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
         titleTextView.setText(getString(R.string.preferences_dialog_change_account_title,
                 getSyncAccountName(this)));
         TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
         subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg));
+        //根据同步修改的账户信息设置标题以及子标题的内容
         dialogBuilder.setCustomTitle(titleView);
-
+        //设置对话框的自定义标题
         CharSequence[] menuItemArray = new CharSequence[] {
                 getString(R.string.preferences_menu_change_account),
                 getString(R.string.preferences_menu_remove_account),
                 getString(R.string.preferences_menu_cancel)
         };
+        //定义一些标记字符串
         dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() {
+            //设置对话框要显示的一个list，用于显示几个命令时,即change，remove，cancel
             public void onClick(DialogInterface dialog, int which) {
+                //按键功能，由which来决定
                 if (which == 0) {
+                    //进入账户选择对话框
                     showSelectAccountAlertDialog();
                 } else if (which == 1) {
+                    //删除账户并且跟新便签界面
                     removeSyncAccount();
                     refreshUI();
                 }
             }
         });
         dialogBuilder.show();
+        //显示对话框
     }
 
+    /*
+     *函数功能：获取谷歌账户
+     *函数实现：通过账户管理器直接获取
+     */
     private Account[] getGoogleAccounts() {
         AccountManager accountManager = AccountManager.get(this);
         return accountManager.getAccountsByType("com.google");
     }
 
+    /*
+     * 函数功能：设置同步账户
+     * 函数实现：如下注释：
+     */
     private void setSyncAccount(String account) {
-        if (!getSyncAccountName(this).equals(account)) {
+        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, "");
             }
+            //编辑共享的首选项
             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 +383,32 @@ 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
+     * 函数实现：如下注释：
+     */
     private void removeSyncAccount() {
         SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
-        SharedPreferences.Editor editor = settings.edit();
+        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() {
@@ -338,49 +419,73 @@ 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
+     * 函数实现：通过共享的首选项里的信息直接获取
+     */
     public static String getSyncAccountName(Context context) {
         SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
                 Context.MODE_PRIVATE);
         return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
     }
 
+    /*
+     * 函数功能：设置最终同步的时间
+     * 函数实现：如下注释
+     */
     public static void setLastSyncTime(Context context, long time) {
         SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
                 Context.MODE_PRIVATE);
-        SharedPreferences.Editor editor = settings.edit();
+        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();
+        editor.commit();//编辑最终同步时间并提交更新
     }
 
+    /*
+     * 函数功能：获取最终同步时间
+     * 函数实现：通过共享的首选项里的信息直接获取
+     */
     public static long getLastSyncTime(Context context) {
         SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
                 Context.MODE_PRIVATE);
         return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0);
     }
 
+    /*
+     * 函数功能：接受同步信息
+     * 函数实现：继承BroadcastReceiver
+     */
     private class GTaskReceiver extends BroadcastReceiver {
 
         @Override
         public void onReceive(Context context, Intent intent) {
             refreshUI();
             if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {
+                //获取随广播而来的Intent中的同步服务的数据
                 TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
                 syncStatus.setText(intent
                         .getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
+                //通过获取的数据在设置系统的状态
             }
 
         }
     }
 
+    /*
+     * 函数功能：处理菜单的选项
+     * 函数实现：如下注释
+     * 参数:MenuItem菜单选项
+     */
     public boolean onOptionsItemSelected(MenuItem item) {
-        switch (item.getItemId()) {
+        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;
+                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;
         }