diff --git a/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java b/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java
new file mode 100644
index 0000000..2e9ac87
--- /dev/null
+++ b/app/src/main/java/net/micode/notes/ui/NotesListAdapter.java
@@ -0,0 +1,203 @@
+/*
+ * 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;
+import android.database.Cursor;
+import android.util.Log;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.CursorAdapter;
+
+import net.micode.notes.data.Notes;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+
+
+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;
+
+    public static class AppWidgetAttribute {
+        public int widgetId;
+        public int widgetType;
+    };
+
+    public NotesListAdapter(Context context) {
+        super(context, null);
+        mSelectedIndex = new HashMap<Integer, Boolean>();
+        mContext = context;
+        mNotesCount = 0;
+    }
+
+    @Override
+    public View newView(Context context, Cursor cursor, ViewGroup parent) {
+        return new NotesListItem(context);
+    }
+
+    @Override
+    public void bindView(View view, Context context, Cursor cursor) {
+        if (view instanceof NotesListItem) {
+            NoteItemData itemData = new NoteItemData(context, cursor);
+            ((NotesListItem) view).bind(context, itemData, mChoiceMode,
+                    isSelectedItem(cursor.getPosition()));
+        }
+    }
+
+    public void setCheckedItem(final int position, final boolean checked) {
+        mSelectedIndex.put(position, checked);
+        notifyDataSetChanged();
+    }
+
+    public boolean isInChoiceMode() {
+        return mChoiceMode;
+    }
+
+    public void setChoiceMode(boolean mode) {
+        mSelectedIndex.clear();
+        mChoiceMode = mode;
+    }
+
+    public void selectAll(boolean checked) {
+        Cursor cursor = getCursor();
+        for (int i = 0; i < getCount(); i++) {
+            if (cursor.moveToPosition(i)) {
+                if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) {
+                    setCheckedItem(i, checked);
+                }
+            }
+        }
+    }
+
+    public HashSet<Long> getSelectedItemIds() {
+        HashSet<Long> itemSet = new HashSet<Long>();
+        for (Integer position : mSelectedIndex.keySet()) {
+            if (mSelectedIndex.get(position) == true) {
+                Long id = getItemId(position);
+                if (id == Notes.ID_ROOT_FOLDER) {
+                    Log.d(TAG, "Wrong item id, should not happen");
+                } else {
+                    itemSet.add(id);
+                }
+            }
+        }
+
+        return itemSet;
+    }
+
+    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) {
+                    AppWidgetAttribute widget = new AppWidgetAttribute();
+                    NoteItemData item = new NoteItemData(mContext, c);
+                    widget.widgetId = item.getWidgetId();
+                    widget.widgetType = item.getWidgetType();
+                    itemSet.add(widget);
+                    /**
+                     * Don't close cursor here, only the adapter could close it
+                     */
+                } else {
+                    Log.e(TAG, "Invalid cursor");
+                    return null;
+                }
+            }
+        }
+        return itemSet;
+    }
+
+    public int getSelectedCount() {
+        Collection<Boolean> values = mSelectedIndex.values();
+        if (null == values) {
+            return 0;
+        }
+        Iterator<Boolean> iter = values.iterator();
+        int count = 0;
+        while (iter.hasNext()) {
+            if (true == iter.next()) {
+                count++;
+            }
+        }
+        return count;
+    }
+
+    public boolean isAllSelected() {
+        int checkedCount = getSelectedCount();
+        return (checkedCount != 0 && checkedCount == mNotesCount);
+    }
+
+    public boolean isSelectedItem(final int position) {
+        if (null == mSelectedIndex.get(position)) {
+            return false;
+        }
+        return mSelectedIndex.get(position);
+    }
+
+    @Override
+    protected void onContentChanged() {
+        super.onContentChanged();
+        calcNotesCount();
+    }
+
+    @Override
+    public void changeCursor(Cursor cursor) {
+        super.changeCursor(cursor);
+        calcNotesCount();
+    }
+
+    private void calcNotesCount() {
+        mNotesCount = 0;
+        for (int i = 0; i < getCount(); i++) {
+            Cursor c = (Cursor) getItem(i);
+            if (c != null) {
+                if (NoteItemData.getNoteType(c) == Notes.TYPE_NOTE) {
+                    mNotesCount++;
+                }
+            } else {
+                Log.e(TAG, "Invalid cursor");
+                return;
+            }
+        }
+    }
+
+    public int retCount() {
+        int NotesCount = mNotesCount;
+        int ItemCount = getCount();
+        for (int i = 0; i < ItemCount; i++) {
+            Cursor c = (Cursor) getItem(i);
+            if (c != null) {
+                if (NoteItemData.getNoteType(c) == Notes.TYPE_NOTE) {
+                    NoteItemData NoteItem = new NoteItemData(mContext, c);
+                    NotesCount += NoteItem.getNotesCount();
+                }
+            } else {
+                Log.e(TAG, "Invalid cursor");
+                return -1;
+            }
+        }
+        return NotesCount;
+    }
+}
+
diff --git a/doc/邹兴云注释的代码/NoteWidgetProvider.java b/doc/邹兴云注释的代码/NoteWidgetProvider.java
index 5c7f03a..f4070e9 100644
--- a/doc/邹兴云注释的代码/NoteWidgetProvider.java
+++ b/doc/邹兴云注释的代码/NoteWidgetProvider.java
@@ -65,16 +65,19 @@ public abstract class NoteWidgetProvider extends AppWidgetProvider {
 
 具体地，使用 getContentResolver() 获取一个 ContentResolver 对象，调用 update() 方法对笔记数据库中的记录进行更新。更新的条件为 NoteColumns.WIDGET_ID + "=?"，即 NoteColumns.WIDGET_ID 等于当前小部件 ID，更新的数据为 values 对象，其中 NoteColumns.WIDGET_ID 的值已经被设置为 AppWidgetManager.INVALID_APPWIDGET_ID。*/
 
-    private Cursor getNoteWidgetInfo(Context context, int widgetId) {// 使用 getContentResolver() 方法获取 ContentResolver 对象，通过该对象进行对笔记数据库的查询操作
-        return context.getContentResolver().query(Notes.CONTENT_NOTE_URI, // 使用 query() 方法查询笔记数据库，返回一个 Cursor 对象
-        return context.getContentResolver().query(// 查询的 URI，笔记数据库中笔记的内容保存在该 URI 下
+    private Cursor getNoteWidgetInfo(Context context, int widgetId) {
+        return context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
                 PROJECTION,
-                Notes.CONTENT_NOTE_URI,
-                PROJECTION,
-                NoteColumns.WIDGET_ID + "=? AND " + NoteColumns.PARENT_ID + "<>?",// 查询的列，即笔记 ID、笔记背景颜色 ID 和笔记摘录内容
-                new String[] { String.valueOf(widgetId), String.valueOf(Notes.ID_TRASH_FOLER) },//查询的条件，即笔记关联的小部件 ID 以及笔记的父 ID 不为回收站的笔记
-                null);// 排序方式，这里为 null 表示不排序
-    }
+                NoteColumns.WIDGET_ID + "=? AND " + NoteColumns.PARENT_ID + "<>?",
+                new String[] { String.valueOf(widgetId), String.valueOf(Notes.ID_TRASH_FOLER) },
+                null);
+    }/*该方法使用上下文对象获取ContentResolver，用于查询内容提供程序以获取有关笔记小部件的信息。查询在Notes.CONTENT_NOTE_URI上执行，这是表示内容提供程序中笔记表的URI。
+
+PROJECTION是一个字符串数组，指定要从表中检索的列。NoteColumns.WIDGET_ID和NoteColumns.PARENT_ID是要检索的两列。NoteColumns.WIDGET_ID是包含与笔记相关联的小部件的ID的列，NoteColumns.PARENT_ID是包含笔记的父文件夹的ID的列。
+
+查询还包括一个选择参数，根据小部件ID和垃圾箱文件夹的ID过滤结果。选择参数使用“？”占位符语法构造，并将占位符的实际值作为字符串数组传递到selectionArgs参数中。sortOrder参数的null值表示应以默认顺序返回结果。
+
+该方法返回一个Cursor对象，表示查询结果。Cursor可用于遍历结果集的行，并检索每行的列的值。*/
 
     protected void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
         update(context, appWidgetManager, appWidgetIds, false);
diff --git a/src/app/src/main/java/net/micode/notes/ui/NotesListActivity.java b/src/app/src/main/java/net/micode/notes/ui/NotesListActivity.java
index 0052618..b1e8330 100644
--- a/src/app/src/main/java/net/micode/notes/ui/NotesListActivity.java
+++ b/src/app/src/main/java/net/micode/notes/ui/NotesListActivity.java
@@ -93,7 +93,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
 
     private enum ListEditState {
         NOTE_LIST, SUB_FOLDER, CALL_RECORD_FOLDER
-    }
+    };
 
     private ListEditState mState;
 
@@ -797,6 +797,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
             case R.id.menu_export_text: {
                 exportNoteToText();
                 break;
+
             }
             case R.id.menu_sync: {
                 if (isSyncMode()) {
@@ -818,6 +819,10 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
                 createNewNote();
                 break;
             }
+            case R.id.menu_countallNotes: {
+                showNumberofNotes();
+                break;
+            }
             case R.id.menu_search:
                 onSearchRequested();
                 break;
@@ -970,4 +975,11 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         mTitleBar.setText("回收站");
         mTitleBar.setVisibility(View.VISIBLE);
     }
+
+    private void showNumberofNotes() {
+        AlertDialog.Builder btr = new AlertDialog.Builder(this);
+        btr.setTitle("目前便签数");
+        btr.setMessage("目前有 " + Integer.toString(mNotesListAdapter.retCount()) + "个便签");
+        btr.show();
+    }
 }
diff --git a/src/app/src/main/res/menu/note_list.xml b/src/app/src/main/res/menu/note_list.xml
index 56443cc..7113951 100644
--- a/src/app/src/main/res/menu/note_list.xml
+++ b/src/app/src/main/res/menu/note_list.xml
@@ -19,23 +19,28 @@
     xmlns:android="http://schemas.android.com/apk/res/android">
     <item
         android:id="@+id/menu_new_folder"
-        android:title="新建文件夹" />
+        android:title="@string/menu_create_folder"/>
 
     <item
         android:id="@+id/menu_export_text"
-        android:title="导出文本" />
+        android:title="@string/menu_export_text"/>
 
     <item
         android:id="@+id/menu_sync"
-        android:title="同步" />
+        android:title="@string/menu_sync"/>
 
     <item
         android:id="@+id/menu_setting"
-        android:title="设置" />
+        android:title="@string/menu_setting" />
 
     <item
         android:id="@+id/menu_search"
-        android:title="搜索" />
+        android:title="@string/menu_search"/>
+
+    <item
+        android:id="@+id/menu_countallNotes"
+        android:title="@string/menu_countallNotes"/>
+
     <item
         android:id="@+id/menu_restore"
         android:title="回收站"/>
diff --git a/src/app/src/main/res/values/strings.xml b/src/app/src/main/res/values/strings.xml
index d88549e..a122299 100644
--- a/src/app/src/main/res/values/strings.xml
+++ b/src/app/src/main/res/values/strings.xml
@@ -119,6 +119,7 @@
     <string name="button_delete">Delete</string>
     <string name="call_record_folder_name">Call notes</string>
     <string name="hint_foler_name">Input name</string>
+    <string name="menu_countallNotes" translatable="false">countallNotes" </string>
 
     <string name="search_label">Searching Notes</string>
     <string name="search_hint">Search notes</string>