src/main/java/net/micode/notes/data/Notes.java

@@ -211,22 +211,29 @@ public class Notes {
         public static final String LOCAL_MODIFIED = "local_modified";
 
         /**
-         * 移动到临时文件夹之前的原始父ID
-         * <P> 类型: INTEGER </P>
+         * 原始父ID
+         * <P> 类型: INTEGER (long) </P>
          */
         public static final String ORIGIN_PARENT_ID = "origin_parent_id";
 
         /**
-         * GTask ID
+         * GTASK ID
          * <P> 类型: TEXT </P>
          */
         public static final String GTASK_ID = "gtask_id";
 
         /**
          * 版本号
-         * <P> 类型: INTEGER (long) </P>
+         * <P> 类型: INTEGER </P>
          */
         public static final String VERSION = "version";
+
+        /**
+         * 置顶状态
+         * <P> 类型: INTEGER </P>
+         * <P> 0表示未置顶，1表示置顶 </P>
+         */
+        public static final String PINNED = "pinned";
     }
 
     public interface DataColumns {

src/main/java/net/micode/notes/data/NotesDatabaseHelper.java

@@ -35,7 +35,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
     // 数据库文件名
     private static final String DB_NAME = "note.db";
     // 数据库版本号，用于升级控制
-    private static final int DB_VERSION = 4;
+    private static final int DB_VERSION = 5;
 
     /**
      * 数据库表名常量定义
@@ -56,7 +56,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
      * 笔记表创建SQL语句
      * 包含笔记/文件夹的基本属性：ID、父文件夹ID、提醒时间、背景色、创建/修改时间等
      */
-    private static final String CREATE_NOTE_TABLE_SQL =
+    private static final String CREATE_NOTE_TABLE_SQL = 
             "CREATE TABLE " + TABLE.NOTE + "(" +
                     NoteColumns.ID + " INTEGER PRIMARY KEY," +
                     NoteColumns.PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
@@ -74,7 +74,8 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
                     NoteColumns.LOCAL_MODIFIED + " INTEGER NOT NULL DEFAULT 0," +
                     NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
                     NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," +
-                    NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" +
+                    NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0," +
+                    NoteColumns.PINNED + " INTEGER NOT NULL DEFAULT 0" +
                     ")";
 
     /**
@@ -378,6 +379,12 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
             oldVersion++;
         }
 
+        // 版本4升级到版本5
+        if (oldVersion == 4) {
+            upgradeToV5(db);
+            oldVersion++;
+        }
+
         // 如果需要，重新创建触发器
         if (reCreateTriggers) {
             reCreateNoteTableTriggers(db);
@@ -429,4 +436,13 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
         db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION
                 + " INTEGER NOT NULL DEFAULT 0");
     }
+
+    /**
+     * 升级到版本5：添加置顶字段，用于便签置顶功能
+     * @param db 数据库实例
+     */
+    private void upgradeToV5(SQLiteDatabase db) {
+        db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.PINNED
+                + " INTEGER NOT NULL DEFAULT 0");
+    }
 }

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

@@ -53,6 +53,7 @@ public class NoteItemData {
         NoteColumns.TYPE,
         NoteColumns.WIDGET_ID,
         NoteColumns.WIDGET_TYPE,
+        NoteColumns.PINNED,
     };
 
     /**
@@ -114,12 +115,22 @@ public class NoteItemData {
      * 查询结果中小组件类型列的索引
      */
     private static final int WIDGET_TYPE_COLUMN           = 11;
+    
+    /**
+     * 查询结果中置顶状态列的索引
+     */
+    private static final int PINNED_COLUMN                = 12;
 
     /**
      * 笔记ID
      */
     private long mId;
     
+    /**
+     * 置顶状态
+     */
+    private boolean mPinned;
+    
     /**
      * 提醒日期
      */
@@ -230,6 +241,7 @@ public class NoteItemData {
         mType = cursor.getInt(TYPE_COLUMN);
         mWidgetId = cursor.getInt(WIDGET_ID_COLUMN);
         mWidgetType = cursor.getInt(WIDGET_TYPE_COLUMN);
+        mPinned = (cursor.getInt(PINNED_COLUMN) > 0) ? true : false;
 
         mPhoneNumber = "";
         if (mParentId == Notes.ID_CALL_RECORD_FOLDER) {
@@ -447,6 +459,22 @@ public class NoteItemData {
     public boolean isCallRecord() {
         return (mParentId == Notes.ID_CALL_RECORD_FOLDER && !TextUtils.isEmpty(mPhoneNumber));
     }
+    
+    /**
+     * 获取置顶状态
+     * @return 置顶状态，true表示已置顶，false表示未置顶
+     */
+    public boolean isPinned() {
+        return mPinned;
+    }
+    
+    /**
+     * 设置置顶状态
+     * @param pinned 置顶状态，true表示置顶，false表示取消置顶
+     */
+    public void setPinned(boolean pinned) {
+        mPinned = pinned;
+    }
 
     /**
      * 获取笔记类型（静态方法）

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

@@ -148,6 +148,15 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
 
     /** 模式回调 */
     private ModeCallback mModeCallBack;
+    
+    /** 是否分发触摸事件 */
+    private boolean mDispatch;
+    
+    /** 原始Y坐标 */
+    private int mOriginY;
+    
+    /** 分发Y坐标 */
+    private int mDispatchY;
 
     /** 日志标签 */
     private static final String TAG = "NotesListActivity";
@@ -298,12 +307,10 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         mNotesListView.setAdapter(mNotesListAdapter);
         mAddNewNote = (Button) findViewById(R.id.btn_new_note);
         mAddNewNote.setOnClickListener(this);
-        // 移除复杂的OnTouchListener，简化触摸事件处理
-        // mAddNewNote.setOnTouchListener(new NewNoteOnTouchListener());
-        // 移除不再需要的触摸事件相关变量
-        // mDispatch = false;
-        // mDispatchY = 0;
-        // mOriginY = 0;
+        mAddNewNote.setOnTouchListener(new NewNoteOnTouchListener());
+        mDispatch = false;
+        mDispatchY = 0;
+        mOriginY = 0;
         mTitleBar = (TextView) findViewById(R.id.tv_title_bar);
         mState = ListEditState.NOTE_LIST;
         mModeCallBack = new ModeCallback();
@@ -354,6 +361,11 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
                 mMoveMenu.setVisible(true);
                 mMoveMenu.setOnMenuItemClickListener(this);
             }
+            // 添加置顶菜单初始化
+            MenuItem pinMenu = menu.findItem(R.id.pin);
+            if (pinMenu != null) {
+                pinMenu.setOnMenuItemClickListener(this);
+            }
             mActionMode = mode;
             mNotesListAdapter.setChoiceMode(true);
             mNotesListView.setLongClickable(false);
@@ -513,6 +525,9 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
                 case R.id.move:
                     startQueryDestinationFolders();
                     break;
+                case R.id.pin:
+                    togglePinnedStatus();
+                    break;
                 default:
                     return false;
             }
@@ -520,10 +535,93 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         }
     }
 
-    // 删除不再使用的NewNoteOnTouchListener内部类
-    // private class NewNoteOnTouchListener implements OnTouchListener {
-    //     // ... 内部类内容 ...
-    // };
+    /**
+     * 新建笔记按钮触摸监听器
+     * <p>
+     * 该类实现了OnTouchListener接口，用于处理新建笔记按钮的触摸事件，
+     * 特别是处理按钮透明部分的触摸事件，将其分发给下方的列表视图
+     * </p>
+     */
+    private class NewNoteOnTouchListener implements OnTouchListener {
+
+        /**
+         * 处理触摸事件
+         * <p>
+         * 该方法完成以下工作：
+         * 1. 处理ACTION_DOWN事件：
+         *    - 获取屏幕高度和新建笔记按钮高度
+         *    - 计算触摸事件的Y坐标
+         *    - 如果当前状态是SUB_FOLDER，减去标题栏高度
+         *    - 检查触摸点是否在按钮的透明部分（根据公式y=-0.12x+94判断）
+         *    - 如果是，将触摸事件分发给下方的列表视图
+         * 2. 处理ACTION_MOVE事件：
+         *    - 如果已经开始分发事件，更新事件坐标并继续分发给列表视图
+         * 3. 处理其他事件：
+         *    - 如果已经开始分发事件，结束分发并将事件分发给列表视图
+         * </p>
+         * @param v 被触摸的视图
+         * @param event 触摸事件
+         * @return 是否消费了该事件，返回true表示已消费
+         */
+        public boolean onTouch(View v, MotionEvent event) {
+            switch (event.getAction()) {
+                case MotionEvent.ACTION_DOWN: {
+                    Display display = getWindowManager().getDefaultDisplay();
+                    int screenHeight = display.getHeight();
+                    int newNoteViewHeight = mAddNewNote.getHeight();
+                    int start = screenHeight - newNoteViewHeight;
+                    int eventY = start + (int) event.getY();
+                    /**
+                     * Minus TitleBar's height
+                     */
+                    if (mState == ListEditState.SUB_FOLDER) {
+                        eventY -= mTitleBar.getHeight();
+                        start -= mTitleBar.getHeight();
+                    }
+                    /**
+                     * HACKME:When click the transparent part of "New Note" button, dispatch
+                     * the event to the list view behind this button. The transparent part of
+                     * "New Note" button could be expressed by formula y=-0.12x+94（Unit:pixel）
+                     * and the line top of the button. The coordinate based on left of the "New
+                     * Note" button. The 94 represents maximum height of the transparent part.
+                     * Notice that, if the background of the button changes, the formula should
+                     * also change. This is very bad, just for the UI designer's strong requirement.
+                     */
+                    if (event.getY() < (event.getX() * (-0.12) + 94)) {
+                        View view = mNotesListView.getChildAt(mNotesListView.getChildCount() - 1
+                                - mNotesListView.getFooterViewsCount());
+                        if (view != null && view.getBottom() > start
+                                && (view.getTop() < (start + 94))) {
+                            mOriginY = (int) event.getY();
+                            mDispatchY = eventY;
+                            event.setLocation(event.getX(), mDispatchY);
+                            mDispatch = true;
+                            return mNotesListView.dispatchTouchEvent(event);
+                        }
+                    }
+                    break;
+                }
+                case MotionEvent.ACTION_MOVE: {
+                    if (mDispatch) {
+                        mDispatchY += (int) event.getY() - mOriginY;
+                        event.setLocation(event.getX(), mDispatchY);
+                        return mNotesListView.dispatchTouchEvent(event);
+                    }
+                    break;
+                }
+                default: {
+                    if (mDispatch) {
+                        event.setLocation(event.getX(), mDispatchY);
+                        mDispatch = false;
+                        return mNotesListView.dispatchTouchEvent(event);
+                    }
+                    break;
+                }
+            }
+            return false;
+        }
+
+    };
 
     /**
      * 启动异步笔记列表查询
@@ -537,7 +635,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null,
                 Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, new String[] {
                     String.valueOf(mCurrentFolderId)
-                }, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
+                }, NoteColumns.PINNED + " DESC," + NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
     }
 
     /**
@@ -670,6 +768,54 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         }.execute();
     }
 
+    /**
+     * 切换选中便签的置顶状态
+     */
+    private void togglePinnedStatus() {
+        final HashSet<Long> selectedIds = mNotesListAdapter.getSelectedItemIds();
+        final int selectedCount = mNotesListAdapter.getSelectedCount();
+        
+        new AsyncTask<Void, Void, Void>() {
+            protected Void doInBackground(Void... unused) {
+                for (Long noteId : selectedIds) {
+                    // 查询当前便签的置顶状态
+                    Cursor cursor = mContentResolver.query(Notes.CONTENT_NOTE_URI,
+                            new String[]{NoteColumns.PINNED},
+                            NoteColumns.ID + "=?",
+                            new String[]{String.valueOf(noteId)},
+                            null);
+                    
+                    if (cursor != null && cursor.moveToFirst()) {
+                        int currentPinned = cursor.getInt(0);
+                        // 切换置顶状态
+                        int newPinned = currentPinned == 1 ? 0 : 1;
+                        
+                        ContentValues values = new ContentValues();
+                        values.put(NoteColumns.PINNED, newPinned);
+                        
+                        mContentResolver.update(Notes.CONTENT_NOTE_URI,
+                                values,
+                                NoteColumns.ID + "=?",
+                                new String[]{String.valueOf(noteId)});
+                        
+                        cursor.close();
+                    }
+                }
+                return null;
+            }
+
+            @Override
+            protected void onPostExecute(Void unused) {
+                Toast.makeText(NotesListActivity.this, 
+                        "已更新 " + selectedCount + " 个便签",
+                        Toast.LENGTH_SHORT).show();
+                // 重新查询数据，更新列表
+                startAsyncNotesListQuery();
+                mModeCallBack.finishActionMode();
+            }
+        }.execute();
+    }
+
     /**
      * 删除文件夹
      * <p>

src/main/res/layout/note_edit.xml

@@ -19,6 +19,7 @@
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     android:background="@drawable/list_background"
+    android:fitsSystemWindows="true"
     xmlns:android="http://schemas.android.com/apk/res/android">
 
     <LinearLayout
@@ -81,7 +82,8 @@
                 android:scrollbars="none"
                 android:overScrollMode="never"
                 android:layout_gravity="left|top"
-                android:fadingEdgeLength="0dip">
+                android:fadingEdgeLength="0dip"
+                android:paddingTop="16dp">
 
                 <LinearLayout
                     android:layout_width="fill_parent"

src/main/res/menu/note_list_options.xml

@@ -28,4 +28,9 @@
         android:title="@string/menu_delete"
         android:icon="@drawable/menu_delete"
         android:showAsAction="always|withText" />
+        
+    <item
+        android:id="@+id/pin"
+        android:title="@string/menu_pin"
+        android:showAsAction="always|withText" />
 </menu>

src/main/res/values-zh-rCN/strings.xml

@@ -44,6 +44,8 @@
     <string name="menu_search">搜索</string>
     <string name="menu_delete">删除</string>
     <string name="menu_move">移动到文件夹</string>
+    <string name="menu_pin">置顶</string>
+    <string name="menu_unpin">取消置顶</string>
     <string name="menu_select_title">选中了 %d 项</string>
     <string name="menu_select_none">没有选中项，操作无效</string>
     <string name="menu_select_all">全选</string>

src/main/res/values/strings.xml

@@ -48,6 +48,8 @@
     <string name="menu_search">Search</string>
     <string name="menu_delete">Delete</string>
     <string name="menu_move">Move to folder</string>
+    <string name="menu_pin">Pin</string>
+    <string name="menu_unpin">Unpin</string>
     <string name="menu_select_title">%d selected</string>
     <string name="menu_select_none">Nothing selected, the operation is invalid</string>
     <string name="menu_select_all">Select all</string>