diff --git a/Notes-master2/src/net/micode/notes/model/Note.java b/Notes-master2/src/net/micode/notes/model/Note.java
index 6706cf6..b28b5dd 100644
--- a/Notes-master2/src/net/micode/notes/model/Note.java
+++ b/Notes-master2/src/net/micode/notes/model/Note.java
@@ -15,28 +15,28 @@
  */
 
 package net.micode.notes.model;
-import android.content.ContentProviderOperation;
-import android.content.ContentProviderResult;
-import android.content.ContentUris;
-import android.content.ContentValues;
-import android.content.Context;
-import android.content.OperationApplicationException;
-import android.net.Uri;
-import android.os.RemoteException;
-import android.util.Log;
+import android.content.ContentProviderOperation;//批量的更新、插入、删除数据。
+import android.content.ContentProviderResult;//操作的结果
+import android.content.ContentUris;//添加和获取Uri后面的ID
+import android.content.ContentValues;//一种用来存储基本数据类型数据的存储机制
+import android.content.Context;//该类用于弄清调用者的实例
+import android.content.OperationApplicationException;//操作应用程序容错
+import android.net.Uri;//待操作的数据
+import android.os.RemoteException;//远程容错
+import android.util.Log;//输出日志，出错、警告等
 
-import net.micode.notes.data.Notes;
-import net.micode.notes.data.Notes.CallNote;
-import net.micode.notes.data.Notes.DataColumns;
-import net.micode.notes.data.Notes.NoteColumns;
-import net.micode.notes.data.Notes.TextNote;
+import net.micode.notes.data.Notes;//导入Note
+import net.micode.notes.data.Notes.CallNote;//导入Notes.CallNote
+import net.micode.notes.data.Notes.DataColumns;//导入Notes.DataColumns
+import net.micode.notes.data.Notes.NoteColumns;//导入Notes.NoteColumns
+import net.micode.notes.data.Notes.TextNote;//导入Notes.TextNote
 
-import java.util.ArrayList;
+import java.util.ArrayList;//输入Scanner
 
 
 public class Note {
-    private ContentValues mNoteDiffValues;
-    private NoteData mNoteData;
+    private ContentValues mNoteDiffValues;//属性
+    private NoteData mNoteData;//属性
     private static final String TAG = "Note";
     /**
      * Create a new note id for adding a new note to databases
@@ -49,8 +49,10 @@ public class Note {
         values.put(NoteColumns.MODIFIED_DATE, createdTime);
         values.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
         values.put(NoteColumns.LOCAL_MODIFIED, 1);
-        values.put(NoteColumns.PARENT_ID, folderId);
+        values.put(NoteColumns.PARENT_ID, folderId);//将数据写入数据库表格
         Uri uri = context.getContentResolver().insert(Notes.CONTENT_NOTE_URI, values);
+        //ContentResolver()主要是实现外部应用对ContentProvider中的数据
+        //进行添加、删除、修改和查询操作
 
         long noteId = 0;
         try {
@@ -58,49 +60,49 @@ public class Note {
         } catch (NumberFormatException e) {
             Log.e(TAG, "Get note id error :" + e.toString());
             noteId = 0;
-        }
+        }//try-catch异常处理
         if (noteId == -1) {
             throw new IllegalStateException("Wrong note id:" + noteId);
         }
         return noteId;
     }
 
-    public Note() {
+    public Note() {//定义两个变量用来存储便签的数据，一个是存储便签属性、一个是存储便签内容
         mNoteDiffValues = new ContentValues();
         mNoteData = new NoteData();
     }
 
-    public void setNoteValue(String key, String value) {
+    public void setNoteValue(String key, String value) {//设置数据库表格的标签属性数据
         mNoteDiffValues.put(key, value);
         mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
         mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
     }
 
-    public void setTextData(String key, String value) {
+    public void setTextData(String key, String value) {//设置数据库表格的标签文本内容的数据
         mNoteData.setTextData(key, value);
     }
 
-    public void setTextDataId(long id) {
+    public void setTextDataId(long id) {//设置文本数据的ID
         mNoteData.setTextDataId(id);
     }
 
-    public long getTextDataId() {
+    public long getTextDataId() {//得到文本数据的ID
         return mNoteData.mTextDataId;
     }
 
-    public void setCallDataId(long id) {
+    public void setCallDataId(long id) {//设置电话号码数据的ID
         mNoteData.setCallDataId(id);
     }
 
-    public void setCallData(String key, String value) {
+    public void setCallData(String key, String value) {//得到电话号码数据的ID
         mNoteData.setCallData(key, value);
     }
 
-    public boolean isLocalModified() {
+    public boolean isLocalModified() {//判断是否是本地修改
         return mNoteDiffValues.size() > 0 || mNoteData.isLocalModified();
     }
 
-    public boolean syncNote(Context context, long noteId) {
+    public boolean syncNote(Context context, long noteId) {//判断数据是否同步
         if (noteId <= 0) {
             throw new IllegalArgumentException("Wrong note id:" + noteId);
         }
@@ -130,17 +132,17 @@ public class Note {
         return true;
     }
 
-    private class NoteData {
+    private class NoteData {//定义一个基本的便签内容的数据类，主要包含文本数据和电话号码数据
         private long mTextDataId;
 
-        private ContentValues mTextDataValues;
+        private ContentValues mTextDataValues;//文本数据
 
         private long mCallDataId;
 
-        private ContentValues mCallDataValues;
+        private ContentValues mCallDataValues;//电话号码数据
 
         private static final String TAG = "NoteData";
-
+        //下面是上述几个函数的具体实现
         public NoteData() {
             mTextDataValues = new ContentValues();
             mCallDataValues = new ContentValues();
@@ -177,19 +179,19 @@ public class Note {
             mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
             mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
         }
-
+        //下面函数的作用是将新的数据通过Uri的操作存储到数据库
         Uri pushIntoContentResolver(Context context, long noteId) {
             /**
              * Check for safety
              */
-            if (noteId <= 0) {
+            if (noteId <= 0) {//判断数据是否合法
                 throw new IllegalArgumentException("Wrong note id:" + noteId);
             }
 
             ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
-            ContentProviderOperation.Builder builder = null;
+            ContentProviderOperation.Builder builder = null;//数据库的操作列表
 
-            if(mTextDataValues.size() > 0) {
+            if(mTextDataValues.size() > 0) {//把文本数据存入DataColumns
                 mTextDataValues.put(DataColumns.NOTE_ID, noteId);
                 if (mTextDataId == 0) {
                     mTextDataValues.put(DataColumns.MIME_TYPE, TextNote.CONTENT_ITEM_TYPE);
@@ -211,7 +213,7 @@ public class Note {
                 mTextDataValues.clear();
             }
 
-            if(mCallDataValues.size() > 0) {
+            if(mCallDataValues.size() > 0) {//把电话号码数据存入DataColumns
                 mCallDataValues.put(DataColumns.NOTE_ID, noteId);
                 if (mCallDataId == 0) {
                     mCallDataValues.put(DataColumns.MIME_TYPE, CallNote.CONTENT_ITEM_TYPE);
@@ -233,7 +235,7 @@ public class Note {
                 mCallDataValues.clear();
             }
 
-            if (operationList.size() > 0) {
+            if (operationList.size() > 0) {//存储过程中的异常处理
                 try {
                     ContentProviderResult[] results = context.getContentResolver().applyBatch(
                             Notes.AUTHORITY, operationList);
diff --git a/Notes-master2/src/net/micode/notes/model/WorkingNote.java b/Notes-master2/src/net/micode/notes/model/WorkingNote.java
index be081e4..d39231a 100644
--- a/Notes-master2/src/net/micode/notes/model/WorkingNote.java
+++ b/Notes-master2/src/net/micode/notes/model/WorkingNote.java
@@ -62,7 +62,7 @@ public class WorkingNote {
 
     private NoteSettingChangedListener mNoteSettingStatusListener;
 
-    public static final String[] DATA_PROJECTION = new String[] {
+    public static final String[] DATA_PROJECTION = new String[] {// 声明 DATA_PROJECTION字符串数组
             DataColumns.ID,
             DataColumns.CONTENT,
             DataColumns.MIME_TYPE,
@@ -72,7 +72,7 @@ public class WorkingNote {
             DataColumns.DATA4,
     };
 
-    public static final String[] NOTE_PROJECTION = new String[] {
+    public static final String[] NOTE_PROJECTION = new String[] { // 声明 NOTE_PROJECTION字符串数组
             NoteColumns.PARENT_ID,
             NoteColumns.ALERTED_DATE,
             NoteColumns.BG_COLOR_ID,
@@ -113,7 +113,7 @@ public class WorkingNote {
         mMode = 0;
         mWidgetType = Notes.TYPE_WIDGET_INVALIDE;
     }
-
+    // WorkingNote的构造函数
     // Existing note construct
     private WorkingNote(Context context, long noteId, long folderId) {
         mContext = context;