src/Notes-master/mainfests/AndroidManifest.xml

@@ -42,6 +42,13 @@
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.SEARCH" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+            <meta-data
+                android:name="android.app.searchable"
+                android:resource="@xml/searchable" />
         </activity>
 
 
@@ -65,15 +72,6 @@
                 <data android:mimeType="vnd.android.cursor.item/text_note" />
                 <data android:mimeType="vnd.android.cursor.item/call_note" />
             </intent-filter>
-
-            <intent-filter>
-                <action android:name="android.intent.action.SEARCH" />
-                <category android:name="android.intent.category.DEFAULT" />
-            </intent-filter>
-
-            <meta-data
-                android:name="android.app.searchable"
-                android:resource="@xml/searchable" />
         </activity>
 
 
@@ -162,7 +160,7 @@
 
         <meta-data
             android:name="android.app.default_searchable"
-            android:value=".ui.NoteEditActivity" />
+            android:value=".ui.NotesListActivity" />
 
         <!--        <activity-->
         <!--            android:name=".MainActivity"-->

src/Notes-master/res/drawable/action_bg_color.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M2,20h20v4H2V20zM5.49,17h2.42l1.27,-3.58h5.65L16.09,17h2.42L13.25,3h-2.5L5.49,17zM9.91,11.39l2.03,-5.79h0.12l2.03,5.79H9.91z"/>
+    
+</vector>

src/Notes-master/res/drawable/action_underline.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+
+    <path android:fillColor="@android:color/black" android:strokeColor="@android:color/black" android:strokeWidth="2" android:pathData="M5,15 L19,15"/>
+
+</vector>

src/Notes-master/res/drawable/drawable/action_bg_color.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M2,20h20v4H2V20zM5.49,17h2.42l1.27,-3.58h5.65L16.09,17h2.42L13.25,3h-2.5L5.49,17zM9.91,11.39l2.03,-5.79h0.12l2.03,5.79H9.91z"/>
+    
+</vector>

src/Notes-master/res/drawable/drawable/action_bold.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M15.6,10.79c0.97,-0.67 1.65,-1.77 1.65,-2.79 0,-2.26 -1.75,-4 -4,-4L7,4v14h7.04c2.09,0 3.71,-1.7 3.71,-3.79 0,-1.52 -0.86,-2.82 -2.15,-3.42zM10,6.5h3c0.83,0 1.5,0.67 1.5,1.5s-0.67,1.5 -1.5,1.5h-3v-3zM13.5,15.5L10,15.5v-3h3.5c0.83,0 1.5,0.67 1.5,1.5s-0.67,1.5 -1.5,1.5z"/>
+    
+</vector>

src/Notes-master/res/drawable/drawable/action_italic.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M10,4v3h2.21l-3.42,8H6v3h8v-3h-2.21l3.42,-8H18V4z"/>
+    
+</vector>

src/Notes-master/res/drawable/drawable/action_undo.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:autoMirrored="true" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M12.5,8c-2.65,0 -5.05,0.99 -6.9,2.6L2,7v9h9l-3.62,-3.62c1.39,-1.16 3.16,-1.88 5.12,-1.88 3.54,0 6.55,2.31 7.6,5.5l2.37,-0.78C21.08,11.03 17.15,8 12.5,8z"/>
+    
+</vector>

src/Notes-master/res/drawable/drawable/ic_launcher_background.xml

@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector
+    android:height="108dp"
+    android:width="108dp"
+    android:viewportHeight="108"
+    android:viewportWidth="108"
+    xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#3DDC84"
+          android:pathData="M0,0h108v108h-108z"/>
+    <path android:fillColor="#00000000" android:pathData="M9,0L9,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,0L19,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,0L29,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,0L39,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,0L49,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,0L59,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,0L69,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,0L79,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M89,0L89,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M99,0L99,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,9L108,9"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,19L108,19"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,29L108,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,39L108,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,49L108,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,59L108,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,69L108,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,79L108,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,89L108,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,99L108,99"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,29L89,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,39L89,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,49L89,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,59L89,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,69L89,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,79L89,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,19L29,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,19L39,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,19L49,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,19L59,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,19L69,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,19L79,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+</vector>

src/Notes-master/res/drawable/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

src/Notes-master/res/drawable/drawable/new_note.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!-- 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.
+-->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="true"
+        android:drawable="@drawable/new_note_pressed" />
+    <item
+        android:drawable="@drawable/new_note_normal" />
+</selector>

src/Notes-master/res/drawable/drawable/new_note_pressed_background.xml

@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector
+    android:height="108dp"
+    android:width="108dp"
+    android:viewportHeight="108"
+    android:viewportWidth="108"
+    xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#3DDC84"
+          android:pathData="M0,0h108v108h-108z"/>
+    <path android:fillColor="#00000000" android:pathData="M9,0L9,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,0L19,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,0L29,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,0L39,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,0L49,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,0L59,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,0L69,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,0L79,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M89,0L89,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M99,0L99,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,9L108,9"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,19L108,19"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,29L108,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,39L108,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,49L108,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,59L108,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,69L108,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,79L108,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,89L108,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,99L108,99"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,29L89,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,39L89,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,49L89,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,59L89,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,69L89,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,79L89,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,19L29,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,19L39,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,19L49,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,19L59,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,19L69,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,19L79,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+</vector>

src/Notes-master/res/layout/note_edit.xml

@@ -64,8 +64,8 @@
                 android:layout_gravity="center"
                 android:background="@drawable/bg_btn_set_color" />
 
-             <!-- Insert image button OMO -->
-             <ImageButton
+            <!-- Insert image button OMO -->
+            <ImageButton
                 android:id="@+id/btn_insert_image"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
@@ -75,6 +75,71 @@
                 android:layout_marginRight="8dip" />
         </LinearLayout>
 
+        <!-- Tag Management Section - Initially Hidden -->
+        <LinearLayout
+            android:id="@+id/tag_management_section"
+            android:layout_width="fill_parent"
+            android:layout_height="100dp"
+            android:orientation="vertical"
+            android:padding="8dp"
+            android:background="@drawable/list_background"
+            android:visibility="gone">
+
+            <!-- Existing Tags -->
+            <HorizontalScrollView
+                android:id="@+id/existing_tags_scroll"
+                android:layout_width="fill_parent"
+                android:layout_height="wrap_content"
+                android:scrollbars="none"
+                android:minHeight="30dp">
+
+                <LinearLayout
+                    android:id="@+id/existing_tags_container"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:orientation="horizontal"
+                    android:gravity="center_vertical"
+                    android:padding="4dp"
+                    android:layout_gravity="center_vertical">
+                </LinearLayout>
+            </HorizontalScrollView>
+
+            <!-- Add Tag Input -->
+            <LinearLayout
+                android:id="@+id/add_tag_input_layout"
+                android:layout_width="fill_parent"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                android:gravity="center_vertical"
+                android:padding="4dp"
+                android:layout_marginTop="8dp"
+                android:minHeight="40dp">
+
+                <EditText
+                    android:id="@+id/et_tag_input"
+                    android:layout_width="0dp"
+                    android:layout_height="40dp"
+                    android:layout_weight="1"
+                    android:hint="添加标签（最多5个，1-15字符）"
+                    android:inputType="text"
+                    android:maxLength="15"
+                    android:singleLine="true"
+                    android:textAppearance="@style/TextAppearancePrimaryItem"
+                    android:background="@android:drawable/editbox_background_normal"
+                    android:gravity="center_vertical"
+                    android:paddingHorizontal="8dp" />
+
+                <Button
+                    android:id="@+id/btn_add_tag"
+                    android:layout_width="80dp"
+                    android:layout_height="40dp"
+                    android:layout_marginLeft="8dp"
+                    android:text="添加"
+                    android:textAppearance="@style/TextAppearancePrimaryItem"
+                    android:gravity="center" />
+            </LinearLayout>
+        </LinearLayout>
+
         <LinearLayout
             android:id="@+id/sv_note_edit"
             android:layout_width="fill_parent"
@@ -128,12 +193,17 @@
                 android:layout_height="7dip"
                 android:background="@drawable/bg_color_btn_mask" />
 
+            <!-- 横向滚动的富文本工具栏 -->
             <!-- 横向滚动的富文本工具栏 -->
             <HorizontalScrollView
+                android:id="@+id/floating_editor_toolbar"
                 android:layout_width="match_parent"
                 android:layout_height="40dp"
+                android:layout_gravity="bottom|center"
                 android:background="#f5f5f5"
-                android:scrollbars="none">
+                android:scrollbars="none"
+                android:elevation="8dp"
+                android:layout_marginBottom="40dp">
 
                 <LinearLayout
                     android:layout_width="wrap_content"
@@ -174,7 +244,7 @@
                         android:backgroundTint="@null"
                         android:focusable="false"
                         android:clickable="true"/>
-
+                    <!-- 下划线按钮 -->
                     <Button
                         android:id="@+id/action_underline"
                         android:layout_width="40dp"
@@ -189,6 +259,8 @@
             </HorizontalScrollView>
         </LinearLayout>
 
+
+
         <!-- 富文本工具栏 - 放置在页面底部 -->
 
     </LinearLayout>

src/Notes-master/res/layout/note_item.xml

@@ -109,4 +109,4 @@
         android:layout_gravity="top|right"
         android:layout_marginEnd="24dp"
         android:visibility="gone"/>
-</FrameLayout>
+</FrameLayout>

src/Notes-master/res/layout/note_list.xml

@@ -40,35 +40,75 @@
         <LinearLayout
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
-            android:orientation="horizontal"
-            android:padding="10dip"
-            android:gravity="center_vertical|end">
+            android:orientation="vertical"
+            android:padding="10dip">
 
-            <!-- 菜单按钮 -->
-            <ImageButton
-                android:id="@+id/btn_menu"
-                android:layout_width="50dip"
-                android:layout_height="50dip"
-                android:src="@android:drawable/ic_menu_more"
-                android:background="@null"
-                android:onClick="showCustomMenu" />
-            <!-- 搜索图标按钮 -->
-            <ImageButton
-                android:id="@+id/btn_search"
-                android:layout_width="50dp"
+            <!-- 搜索栏 -->
+            <LinearLayout
+                android:id="@+id/search_bar"
+                android:layout_width="fill_parent"
                 android:layout_height="50dip"
-                android:layout_marginRight="10dip"
-                android:src="@android:drawable/ic_menu_search"
-                android:background="@null"
-                android:onClick="handleSearchClick" />
+                android:orientation="horizontal"
+                android:background="@drawable/bg_btn_set_color"
+                android:gravity="center_vertical"
+                android:visibility="gone"
+                android:layout_marginBottom="10dip">
+                <EditText
+                    android:id="@+id/et_search"
+                    android:layout_width="0dip"
+                    android:layout_height="match_parent"
+                    android:layout_weight="1"
+                    android:background="@null"
+                    android:hint="搜索笔记和标签"
+                    android:textColor="#FFFFFF"
+                    android:paddingLeft="15dip"
+                    android:paddingRight="10dip"
+                    android:singleLine="true"
+                    android:textSize="16sp"
+                    android:imeOptions="actionSearch" />
+                <ImageButton
+                    android:id="@+id/btn_clear_search"
+                    android:layout_width="40dip"
+                    android:layout_height="40dip"
+                    android:src="@android:drawable/ic_menu_close_clear_cancel"
+                    android:background="@null"
+                    android:padding="10dip"
+                    android:tint="#FFFFFF" />
+            </LinearLayout>
 
-            <!-- 正方形添加按钮 -->
-            <Button
-                android:id="@+id/btn_new_note"
-                android:background="@drawable/new_note"
-                android:layout_width="50dip"
-                android:layout_height="50dip"
-                android:focusable="false" />
+            <!-- 工具栏按钮 -->
+            <LinearLayout
+                android:layout_width="fill_parent"
+                android:layout_height="wrap_content"
+                android:orientation="horizontal"
+                android:gravity="center_vertical|end">
+
+                <!-- 菜单按钮 -->
+                <ImageButton
+                    android:id="@+id/btn_menu"
+                    android:layout_width="50dip"
+                    android:layout_height="50dip"
+                    android:src="@android:drawable/ic_menu_more"
+                    android:background="@null"
+                    android:onClick="showCustomMenu" />
+                <!-- 搜索图标按钮 -->
+                <ImageButton
+                    android:id="@+id/btn_search"
+                    android:layout_width="50dp"
+                    android:layout_height="50dip"
+                    android:layout_marginRight="10dip"
+                    android:src="@android:drawable/ic_menu_search"
+                    android:background="@null"
+                    android:onClick="handleSearchClick" />
+
+                <!-- 正方形添加按钮 -->
+                <Button
+                    android:id="@+id/btn_new_note"
+                    android:background="@drawable/new_note"
+                    android:layout_width="50dip"
+                    android:layout_height="50dip"
+                    android:focusable="false" />
+            </LinearLayout>
         </LinearLayout>
 
         <ListView
@@ -124,6 +164,4 @@
                 android:minWidth="0dip" />
         </LinearLayout>
     </LinearLayout>
-
-
-</FrameLayout>
+</FrameLayout>

src/Notes-master/res/menu/note_edit.xml

@@ -49,4 +49,8 @@
     <item
         android:id="@+id/menu_delete_remind"
         android:title="@string/menu_remove_remind" />
+
+    <item
+        android:id="@+id/menu_tag_management"
+        android:title="标签管理" />
 </menu>

src/Notes-master/res/mipmap-anydpi/ic_launcher.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

src/Notes-master/res/mipmap-anydpi/ic_launcher_round.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

src/Notes-master/res/values/ids.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- 定义退出搜索菜单项的ID -->
+    <item name="menu_exit_search" type="id" />
+</resources>

src/Notes-master/src/net/micode/notes/data/Notes.java

@@ -80,6 +80,8 @@ public class Notes {
         public static final String NOTE = TextNote.CONTENT_ITEM_TYPE;
         // 通话记录笔记的MIME类型
         public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE;
+        // 标签的MIME类型
+        public static final String TAG = TagNote.CONTENT_ITEM_TYPE;
     }
 
     //  URI 是 ContentProvider 的标准访问入口，用于统一访问应用的数据。
@@ -251,4 +253,28 @@ public class Notes {
         // 通话记录笔记的URI
         public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note");
     }
+
+    /**
+     * TagNote 类 - 标签数据定义
+     * 定义了标签特有的数据列和URI
+     */
+    public static final class TagNote implements DataColumns {
+        // 标签名称
+        public static final String TAG_NAME = CONTENT;
+
+        // 标签颜色
+        public static final String TAG_COLOR = DATA1;
+
+        // 标签使用次数
+        public static final String TAG_COUNT = DATA2;
+
+        // 标签的目录MIME类型
+        public static final String CONTENT_TYPE = "vnd.android.cursor.dir/tag_note";
+
+        // 标签的单项MIME类型
+        public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/tag_note";
+
+        // 标签的URI
+        public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/tag_note");
+    }
 }

src/Notes-master/src/net/micode/notes/data/NotesDatabaseHelper.java

@@ -30,7 +30,7 @@ import net.micode.notes.data.Notes.NoteColumns;
 public class NotesDatabaseHelper extends SQLiteOpenHelper {
     private static final String DB_NAME = "note.db";
 
-    private static final int DB_VERSION = 7;
+    private static final int DB_VERSION = 8;
 
     public interface TABLE {
         public static final String NOTE = "note";
@@ -326,6 +326,8 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
         db.execSQL(CREATE_DATA_TABLE_SQL);
         reCreateDataTableTriggers(db);
         db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL);
+        // 添加搜索相关的索引，优化搜索性能
+        db.execSQL("CREATE INDEX IF NOT EXISTS data_mime_type_content_index ON " + TABLE.DATA + "(" + DataColumns.MIME_TYPE + ", " + DataColumns.CONTENT + ");");
         Log.d(TAG, "data table has been created");
     }
 
@@ -402,6 +404,11 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
             oldVersion++;
         }
 
+        if (oldVersion == 7) {
+            upgradeToV8(db);
+            oldVersion++;
+        }
+
         if (reCreateTriggers) {
             reCreateNoteTableTriggers(db);
             reCreateDataTableTriggers(db);
@@ -467,6 +474,12 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
         createTrashDataTable(db);
         Log.d(TAG, "Upgraded to version 7: created trash_data table");
     }
+    
+    private void upgradeToV8(SQLiteDatabase db) {
+        // 升级到版本8，添加标签支持
+        // 标签数据将存储在现有的data表中，使用新的MIME类型
+        Log.d(TAG, "Upgraded to version 8: added tag support");
+    }
 
     public void createEncryptedNotePasswordTable(SQLiteDatabase db) {
         db.execSQL(CREATE_ENCRYPTED_NOTE_PASSWORD_TABLE_SQL);

src/Notes-master/src/net/micode/notes/data/NotesProvider.java

@@ -79,9 +79,13 @@ public class NotesProvider extends ContentProvider {
 
     private static String NOTES_SNIPPET_SEARCH_QUERY = "SELECT " + NOTES_SEARCH_PROJECTION
         + " FROM " + TABLE.NOTE
-        + " WHERE " + NoteColumns.SNIPPET + " LIKE ?"
+        + " LEFT JOIN " + TABLE.DATA + " ON " + TABLE.NOTE + "." + NoteColumns.ID + "=" + TABLE.DATA + "." + DataColumns.NOTE_ID
+        + " WHERE (" + NoteColumns.SNIPPET + " LIKE ?" 
+        + " OR (" + TABLE.DATA + "." + DataColumns.MIME_TYPE + "=? AND " + TABLE.DATA + "." + DataColumns.CONTENT + " LIKE ?" + "))"
         + " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER
-        + " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE;
+        + " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE
+        + " GROUP BY " + TABLE.NOTE + "." + NoteColumns.ID
+        + " ORDER BY CASE WHEN " + TABLE.DATA + "." + DataColumns.MIME_TYPE + "=? AND " + TABLE.DATA + "." + DataColumns.CONTENT + " LIKE ?" + " THEN 0 ELSE 1 END, " + NoteColumns.MODIFIED_DATE + " DESC";
 
     @Override
     public boolean onCreate() {
@@ -145,8 +149,9 @@ public class NotesProvider extends ContentProvider {
 
                 try {
                     searchString = String.format("%%%s%%", searchString);
+                    String tagMimeType = Notes.DataConstants.TAG;
                     c = db.rawQuery(NOTES_SNIPPET_SEARCH_QUERY,
-                            new String[] { searchString });
+                            new String[] { searchString, tagMimeType, searchString, tagMimeType, searchString });
                 } catch (IllegalStateException ex) {
                     Log.e(TAG, "got exception: " + ex.toString());
                 }

src/Notes-master/src/net/micode/notes/model/Note.java

@@ -28,7 +28,9 @@ import android.util.Log;
 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.DataConstants;
 import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.data.Notes.TagNote;
 import net.micode.notes.data.Notes.TextNote;
 
 import java.util.ArrayList;
@@ -149,6 +151,21 @@ public class Note {
     public void setCallData(String key, String value) {
         mNoteData.setCallData(key, value);
     }
+    
+    /**
+     * 添加标签数据
+     * @param tagName 标签名称
+     */
+    public void addTagData(String tagName) {
+        mNoteData.addTagData(tagName);
+    }
+    
+    /**
+     * 清空所有标签数据
+     */
+    public void clearTagData() {
+        mNoteData.clearTagData();
+    }
 
     /**
      * 检查笔记是否在本地被修改
@@ -193,7 +210,7 @@ public class Note {
 
     /**
      * 笔记数据内部类
-     * 用于管理笔记的具体内容数据，支持文本笔记和通话笔记
+     * 用于管理笔记的具体内容数据，支持文本笔记、通话笔记和标签
      */
     private class NoteData {
         private long mTextDataId;      // 文本笔记数据ID
@@ -201,17 +218,23 @@ public class Note {
         private long mCallDataId;      // 通话笔记数据ID
         private ContentValues mCallDataValues;  // 通话笔记数据值
         private static final String TAG = "NoteData";  // 日志标签
+        // 标签相关数据
+        private ArrayList<ContentValues> mTagDataValuesList; // 标签数据值列表
+        private ArrayList<Long> mTagDataIdList; // 标签数据ID列表
 
 
 
 
 
-        /** 构造函数：初始化两个数据集与对应 ID */
+        /** 构造函数：初始化数据集与对应 ID */
         public NoteData() {
             mTextDataValues = new ContentValues();
             mCallDataValues = new ContentValues();
             mTextDataId = 0;
             mCallDataId = 0;
+            // 初始化标签相关数据
+            mTagDataValuesList = new ArrayList<>();
+            mTagDataIdList = new ArrayList<>();
         }
 
         /**
@@ -219,7 +242,7 @@ public class Note {
          * @return 如果笔记数据在本地被修改，返回true，否则返回false
          */
         boolean isLocalModified() {
-            return mTextDataValues.size() > 0 || mCallDataValues.size() > 0;
+            return mTextDataValues.size() > 0 || mCallDataValues.size() > 0 || mTagDataValuesList.size() > 0;
         }
 
         /**
@@ -267,6 +290,28 @@ public class Note {
             mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
             mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
         }
+        
+        /**
+         * 添加标签数据
+         * @param tagName 标签名称
+         */
+        void addTagData(String tagName) {
+            ContentValues tagValues = new ContentValues();
+            tagValues.put(TagNote.TAG_NAME, tagName);
+            mTagDataValuesList.add(tagValues);
+            mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
+            mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
+        }
+        
+        /**
+         * 清空所有标签数据
+         */
+        void clearTagData() {
+            mTagDataValuesList.clear();
+            mTagDataIdList.clear();
+            mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
+            mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
+        }
 
         /**
          * 将笔记数据推入内容解析器
@@ -330,6 +375,29 @@ public class Note {
                 mCallDataValues.clear();
             }
 
+            // 处理标签数据
+            if (mTagDataValuesList.size() > 0) {
+                // 先删除现有标签数据
+                String selection = DataColumns.NOTE_ID + "=? AND " + DataColumns.MIME_TYPE + "=?";
+                String[] selectionArgs = {String.valueOf(noteId), TagNote.CONTENT_ITEM_TYPE};
+                context.getContentResolver().delete(Notes.CONTENT_DATA_URI, selection, selectionArgs);
+                
+                // 插入新标签数据
+                for (ContentValues tagValues : mTagDataValuesList) {
+                    tagValues.put(DataColumns.NOTE_ID, noteId);
+                    tagValues.put(DataColumns.MIME_TYPE, TagNote.CONTENT_ITEM_TYPE);
+                    Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI, tagValues);
+                    try {
+                        long tagDataId = Long.valueOf(uri.getPathSegments().get(1));
+                        mTagDataIdList.add(tagDataId);
+                    } catch (NumberFormatException e) {
+                        Log.e(TAG, "Insert new tag data fail with noteId" + noteId);
+                        return null;
+                    }
+                }
+                mTagDataValuesList.clear();
+            }
+
             if (operationList.size() > 0) {
                 try {
                     ContentProviderResult[] results = context.getContentResolver().applyBatch(

src/Notes-master/src/net/micode/notes/model/WorkingNote.java

@@ -162,7 +162,7 @@ public class WorkingNote {
 
     /**
      * 加载笔记的数据内容（data 表）。
-     * <p>遍历该笔记的所有数据行：找到文本行（NOTE）记录内容与模式；找到通话行（CALL_NOTE）记录其数据ID。</p>
+     * <p>遍历该笔记的所有数据行：找到文本行（NOTE）记录内容与模式；找到通话行（CALL_NOTE）记录其数据ID；找到标签行（TAG）记录标签。</p>
      */
     private void loadNoteData() {
         Cursor cursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI, DATA_PROJECTION,
@@ -180,6 +180,10 @@ public class WorkingNote {
                         mNote.setTextDataId(cursor.getLong(DATA_ID_COLUMN));
                     } else if (DataConstants.CALL_NOTE.equals(type)) {
                         mNote.setCallDataId(cursor.getLong(DATA_ID_COLUMN));
+                    } else if (DataConstants.TAG.equals(type)) {
+                        // 加载标签数据
+                        String tagName = cursor.getString(DATA_CONTENT_COLUMN);
+                        mNote.addTagData(tagName);
                     } else {
                         Log.d(TAG, "Wrong note type with type:" + type);
                     }
@@ -529,6 +533,21 @@ public class WorkingNote {
         }
         return encrypted;
     }
+    
+    /**
+     * 添加标签
+     * @param tagName 标签名称
+     */
+    public void addTag(String tagName) {
+        mNote.addTagData(tagName);
+    }
+    
+    /**
+     * 清空所有标签
+     */
+    public void clearTags() {
+        mNote.clearTagData();
+    }
 
     /**
      * 笔记设置变化监听器

src/Notes-master/src/net/micode/notes/ui/AlarmAlertActivity.java

@@ -36,6 +36,7 @@ import android.view.WindowManager;
 import net.micode.notes.R;
 import net.micode.notes.data.Notes;
 import net.micode.notes.tool.DataUtils;
+import net.micode.notes.ui.NoteEditActivity;
 
 import java.io.IOException;
 

src/Notes-master/src/net/micode/notes/ui/NoteEditActivity.java

@@ -28,6 +28,7 @@ import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
+import android.database.Cursor;
 import android.graphics.Paint;
 import android.net.Uri;
 import android.os.Build;
@@ -46,9 +47,14 @@ import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.MotionEvent;
+import android.view.Gravity;
 import android.view.View;
 import android.view.View.OnClickListener;
+import android.view.View.OnTouchListener;
+import android.view.ViewGroup;
 import android.view.WindowManager;
+import android.util.DisplayMetrics;
+import android.widget.HorizontalScrollView;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
@@ -57,6 +63,7 @@ import android.util.Base64;
 import android.widget.CheckBox;
 import android.widget.CompoundButton;
 import android.widget.CompoundButton.OnCheckedChangeListener;
+import android.widget.Button;
 import android.widget.EditText;
 import android.widget.ImageButton;
 import android.widget.ImageView;
@@ -72,14 +79,21 @@ import android.content.res.Resources;
 // import android.support.annotation.NonNull;
 import android.Manifest;
 import android.graphics.Color;
-import java.io.InputStream;
-import java.io.FileOutputStream;
-import java.io.OutputStream;
 import android.os.Environment;
 import android.text.format.DateUtils;
 import android.view.ViewGroup;
 import android.content.ActivityNotFoundException;
 
+import java.io.InputStream;
+import java.io.FileOutputStream;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 import jp.wasabeef.richeditor.RichEditor;
 
 import net.micode.notes.R;
@@ -96,12 +110,6 @@ import net.micode.notes.ui.NoteEditText.OnTextViewChangeListener;
 import net.micode.notes.widget.NoteWidgetProvider_2x;
 import net.micode.notes.widget.NoteWidgetProvider_4x;
 
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
 
 /**
  * 笔记编辑活动
@@ -181,6 +189,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     private View mFontSizeSelector;                 // 字体大小选择器
     private RichEditor mNoteEditor;                  // 富文本编辑器
     private View mNoteEditorPanel;                  // 笔记编辑器面板
+    private HorizontalScrollView mFloatingToolbar;  // 浮动富文本工具栏
     private WorkingNote mWorkingNote;               // 工作笔记对象
     private SharedPreferences mSharedPrefs;         // 共享偏好设置
     private int mFontSizeId;                        // 字体大小ID
@@ -198,6 +207,18 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     private String mUserQuery;                      // 用户查询字符串
     private Pattern mPattern;                       // 正则表达式模式（用于高亮查询结果）
     private ChecklistManager mChecklistManager;     // 清单管理器（OMO）
+    
+    // 标签管理相关控件
+    private LinearLayout mTagManagementSection;     // 标签管理区域
+    private LinearLayout mExistingTagsContainer;     // 现有标签容器
+    private LinearLayout mBottomTagsContainer;      // 底部标签显示容器
+    private EditText mTagInput;                     // 标签输入框
+    private Button mAddTagButton;                   // 添加标签按钮
+    private ArrayList<String> mTagsList;            // 标签列表
+    
+    // 搜索历史相关
+    private static final String PREFERENCE_SEARCH_HISTORY = "search_history";  // 搜索历史偏好设置键
+    private static final int MAX_SEARCH_HISTORY = 20;  // 最大搜索历史记录数
 
     /**
      * 创建活动时调用
@@ -275,6 +296,11 @@ public class NoteEditActivity extends Activity implements OnClickListener,
                     return false;
                 }
             }
+            
+            // 保存搜索历史
+            if (!TextUtils.isEmpty(mUserQuery)) {
+                saveSearchHistory(mUserQuery);
+            }
             getWindow().setSoftInputMode(
                     WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN
                             | WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
@@ -503,6 +529,9 @@ public class NoteEditActivity extends Activity implements OnClickListener,
          * is not ready
          */
         showAlertHeader();  // 显示提醒头部
+        
+        // 加载现有标签
+        loadExistingTags();
     }
 
     /**
@@ -736,6 +765,12 @@ public class NoteEditActivity extends Activity implements OnClickListener,
             Log.e(TAG, "RichEditor is null! Check layout file.");
             return;
         }
+        
+        // 初始化浮动富文本工具栏
+        mFloatingToolbar = findViewById(R.id.floating_editor_toolbar);
+        if (mFloatingToolbar != null) {
+            setupFloatingToolbarDrag();
+        }
 
         // 初始化富文本编辑器配置
         initRichEditor();
@@ -798,6 +833,9 @@ public class NoteEditActivity extends Activity implements OnClickListener,
             mBtnInsertImage.setOnClickListener(this);
         }
 
+        // 初始化标签管理相关控件
+        initTagManagement();
+
         // 初始化富文本功能按钮
         initRichEditorButtons();
     }
@@ -1001,11 +1039,28 @@ public class NoteEditActivity extends Activity implements OnClickListener,
             case R.id.menu_delete_remind:
                 mWorkingNote.setAlertDate(0, false);  // 删除提醒
                 break;
+            case R.id.menu_tag_management:
+                // 切换标签管理界面显示
+                toggleTagManagement();
+                break;
             default:
                 break;
         }
         return true;
     }
+    
+    /**
+     * 切换标签管理界面的显示/隐藏
+     */
+    private void toggleTagManagement() {
+        if (mTagManagementSection.getVisibility() == View.VISIBLE) {
+            // 隐藏标签管理界面
+            mTagManagementSection.setVisibility(View.GONE);
+        } else {
+            // 显示标签管理界面
+            mTagManagementSection.setVisibility(View.VISIBLE);
+        }
+    }
 
     /**
      * 设置提醒
@@ -1403,6 +1458,10 @@ public class NoteEditActivity extends Activity implements OnClickListener,
      */
     private boolean saveNote() {
         getWorkingText();  // 获取当前工作文本
+        
+        // 保存标签数据
+        saveTagsToNote();
+        
         boolean saved = mWorkingNote.saveNote();  // 保存笔记到数据库
         if (saved) {
             /**
@@ -1416,6 +1475,69 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         }
         return saved;
     }
+    
+    /**
+     * 将标签保存到笔记对象中
+     */
+    private void saveTagsToNote() {
+        // 清空现有标签
+        mWorkingNote.clearTags();
+        
+        // 添加所有标签
+        for (String tag : mTagsList) {
+            mWorkingNote.addTag(tag);
+        }
+    }
+    
+    /**
+     * 保存搜索历史记录
+     * @param query 搜索关键词
+     */
+    private void saveSearchHistory(String query) {
+        if (TextUtils.isEmpty(query)) {
+            return;
+        }
+        
+        // 获取SharedPreferences
+        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
+        
+        // 获取现有的搜索历史
+        String historyString = sp.getString(PREFERENCE_SEARCH_HISTORY, "");
+        
+        // 将搜索历史拆分为列表
+        ArrayList<String> historyList = new ArrayList<>();
+        if (!TextUtils.isEmpty(historyString)) {
+            String[] historyArray = historyString.split(",");
+            for (String item : historyArray) {
+                if (!TextUtils.isEmpty(item) && !historyList.contains(item)) {
+                    historyList.add(item);
+                }
+            }
+        }
+        
+        // 如果搜索关键词已存在，先移除
+        historyList.remove(query);
+        
+        // 将新的搜索关键词添加到列表开头
+        historyList.add(0, query);
+        
+        // 限制搜索历史记录数量
+        if (historyList.size() > MAX_SEARCH_HISTORY) {
+            historyList = new ArrayList<>(historyList.subList(0, MAX_SEARCH_HISTORY));
+        }
+        
+        // 将搜索历史列表转换为字符串，用逗号分隔
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < historyList.size(); i++) {
+            if (i > 0) {
+                sb.append(",");
+            }
+            sb.append(historyList.get(i));
+        }
+        
+        // 保存到SharedPreferences
+        sp.edit().putString(PREFERENCE_SEARCH_HISTORY, sb.toString()).apply();
+    }
 
     /**
      * 发送到桌面
@@ -1685,7 +1807,264 @@ public class NoteEditActivity extends Activity implements OnClickListener,
                 mNoteEditor.setEditorFontSize(18); // 默认值
         }
     }
-
+    
+    /**
+     * 初始化标签管理相关控件和事件监听器
+     */
+    private void initTagManagement() {
+        // 初始化标签管理相关控件
+        mTagManagementSection = findViewById(R.id.tag_management_section);
+        mExistingTagsContainer = findViewById(R.id.existing_tags_container);
+        mTagInput = findViewById(R.id.et_tag_input);
+        mAddTagButton = findViewById(R.id.btn_add_tag);
+        
+        // 初始化标签列表
+        mTagsList = new ArrayList<>();
+        
+        // 设置添加标签按钮的点击事件
+        mAddTagButton.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                addTag();
+            }
+        });
+        
+        // 加载现有标签
+        loadExistingTags();
+    }
+    
+    /**
+     * 添加标签
+     */
+    private void addTag() {
+        String tagName = mTagInput.getText().toString().trim();
+        
+        // 检查标签是否有效
+        if (isValidTag(tagName)) {
+            // 添加标签到列表
+            mTagsList.add(tagName);
+            
+            // 更新UI显示
+            updateTagsDisplay();
+            
+            // 清空输入框
+            mTagInput.setText("");
+        }
+    }
+    
+    /**
+     * 检查标签是否有效
+     * @param tagName 标签名称
+     * @return 标签是否有效
+     */
+    private boolean isValidTag(String tagName) {
+        // 检查标签是否为空
+        if (TextUtils.isEmpty(tagName)) {
+            Toast.makeText(this, "标签不能为空", Toast.LENGTH_SHORT).show();
+            return false;
+        }
+        
+        // 检查标签长度
+        if (tagName.length() < 1 || tagName.length() > 15) {
+            Toast.makeText(this, "标签长度必须在1-15个字符之间", Toast.LENGTH_SHORT).show();
+            return false;
+        }
+        
+        // 检查标签数量是否超过限制
+        if (mTagsList.size() >= 5) {
+            Toast.makeText(this, "每个笔记最多只能添加5个标签", Toast.LENGTH_SHORT).show();
+            return false;
+        }
+        
+        // 检查标签是否已存在
+        if (mTagsList.contains(tagName)) {
+            Toast.makeText(this, "该标签已存在", Toast.LENGTH_SHORT).show();
+            return false;
+        }
+        
+        return true;
+    }
+    
+    /**
+     * 更新标签显示
+     */
+    private void updateTagsDisplay() {
+        // 清空现有标签容器
+        mExistingTagsContainer.removeAllViews();
+        
+        // 添加所有标签到容器
+        for (final String tag : mTagsList) {
+            // 创建标签管理区域的标签视图
+            LinearLayout tagView = new LinearLayout(this);
+            LinearLayout.LayoutParams tagViewParams = new LinearLayout.LayoutParams(
+                    LinearLayout.LayoutParams.WRAP_CONTENT, 
+                    36);
+            tagViewParams.setMargins(0, 0, 8, 0);
+            tagView.setLayoutParams(tagViewParams);
+            tagView.setOrientation(LinearLayout.HORIZONTAL);
+            tagView.setGravity(Gravity.CENTER_VERTICAL);
+            tagView.setPadding(12, 0, 8, 0);
+            tagView.setBackgroundResource(R.drawable.bg_color_btn_mask);
+            tagView.setClickable(true);
+            tagView.setFocusable(true);
+            
+            // 创建标签文本
+            TextView tagText = new TextView(this);
+            tagText.setText(tag);
+            tagText.setTextAppearance(this, R.style.TextAppearancePrimaryItem);
+            tagText.setTextColor(Color.WHITE);
+            tagText.setPadding(0, 0, 8, 0);
+            tagText.setSingleLine(true);
+            tagText.setTextSize(14);
+            
+            // 创建删除按钮
+            ImageView deleteButton = new ImageView(this);
+            LinearLayout.LayoutParams deleteParams = new LinearLayout.LayoutParams(
+                    24, 24);
+            deleteButton.setLayoutParams(deleteParams);
+            deleteButton.setImageResource(android.R.drawable.ic_delete);
+            deleteButton.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
+            deleteButton.setClickable(true);
+            deleteButton.setFocusable(true);
+            deleteButton.setTag(tag);
+            
+            // 设置删除按钮点击事件
+            deleteButton.setOnClickListener(new OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    String tagToRemove = (String) v.getTag();
+                    removeTag(tagToRemove);
+                }
+            });
+            
+            // 添加控件到标签视图
+            tagView.addView(tagText);
+            tagView.addView(deleteButton);
+            
+            // 添加标签视图到容器
+            mExistingTagsContainer.addView(tagView);
+        }
+    }
+    
+    /**
+     * 移除标签
+     * @param tagName 要移除的标签名称
+     */
+    private void removeTag(String tagName) {
+        mTagsList.remove(tagName);
+        updateTagsDisplay();
+    }
+    
+    /**
+     * 设置浮动富文本工具栏的拖拽功能
+     */
+    private void setupFloatingToolbarDrag() {
+        // 记录拖拽状态
+        final boolean[] isDragging = {false};
+        final int[] lastX = {0};
+        final int[] lastY = {0};
+        
+        // 设置触摸监听器
+        mFloatingToolbar.setOnTouchListener(new OnTouchListener() {
+            @Override
+            public boolean onTouch(View v, MotionEvent event) {
+                int x = (int) event.getRawX();
+                int y = (int) event.getRawY();
+                
+                switch (event.getAction()) {
+                    case MotionEvent.ACTION_DOWN:
+                        // 记录初始触摸位置
+                        isDragging[0] = false;
+                        lastX[0] = x;
+                        lastY[0] = y;
+                        break;
+                    case MotionEvent.ACTION_MOVE:
+                        // 计算移动距离
+                        int deltaX = x - lastX[0];
+                        int deltaY = y - lastY[0];
+                        
+                        // 判断是否开始拖拽
+                        if (Math.abs(deltaX) > 5 || Math.abs(deltaY) > 5) {
+                            isDragging[0] = true;
+                        }
+                        
+                        if (isDragging[0]) {
+                            // 更新工具栏位置
+                            ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) v.getLayoutParams();
+                            
+                            // 计算新的位置
+                            int newLeftMargin = params.leftMargin + deltaX;
+                            int newTopMargin = params.topMargin + deltaY;
+                            
+                            // 限制位置在屏幕范围内
+                            DisplayMetrics displayMetrics = new DisplayMetrics();
+                            getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
+                            int screenWidth = displayMetrics.widthPixels;
+                            int screenHeight = displayMetrics.heightPixels;
+                            
+                            // 计算工具栏宽度和高度
+                            int toolbarWidth = v.getWidth();
+                            int toolbarHeight = v.getHeight();
+                            
+                            // 限制左边界
+                            newLeftMargin = Math.max(0, Math.min(newLeftMargin, screenWidth - toolbarWidth));
+                            // 限制上边界
+                            newTopMargin = Math.max(0, Math.min(newTopMargin, screenHeight - toolbarHeight));
+                            
+                            // 更新布局参数
+                            params.leftMargin = newLeftMargin;
+                            params.topMargin = newTopMargin;
+                            v.setLayoutParams(params);
+                            
+                            // 更新最后触摸位置
+                            lastX[0] = x;
+                            lastY[0] = y;
+                            
+                            return true; // 消耗事件
+                        }
+                        break;
+                    case MotionEvent.ACTION_UP:
+                    case MotionEvent.ACTION_CANCEL:
+                        // 结束拖拽
+                        if (isDragging[0]) {
+                            return true; // 消耗事件
+                        }
+                        break;
+                }
+                
+                return false; // 不消耗事件，允许其他触摸事件处理
+            }
+        });
+    }
+    
+    /**
+     * 加载现有标签
+     */
+    private void loadExistingTags() {
+        // 从数据库加载现有标签
+        if (mWorkingNote != null && mWorkingNote.getNoteId() > 0) {
+            Cursor cursor = getContentResolver().query(
+                    Notes.CONTENT_DATA_URI,
+                    new String[]{Notes.DataColumns.CONTENT},
+                    Notes.DataColumns.NOTE_ID + "=? AND " + Notes.DataColumns.MIME_TYPE + "=?",
+                    new String[]{String.valueOf(mWorkingNote.getNoteId()), Notes.DataConstants.TAG},
+                    null);
+            
+            if (cursor != null) {
+                while (cursor.moveToNext()) {
+                    String tagName = cursor.getString(0);
+                    if (!TextUtils.isEmpty(tagName) && !mTagsList.contains(tagName)) {
+                        mTagsList.add(tagName);
+                    }
+                }
+                cursor.close();
+            }
+            
+            // 更新UI显示
+            updateTagsDisplay();
+        }
+    }
+    
     // 初始化富文本编辑器配置
     private void initRichEditor() {
         mNoteEditor.setEditorHeight(600); // 设置编辑器高度
@@ -1699,7 +2078,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     // 添加富文本功能按钮初始化方法
     private void initRichEditorButtons() {
         // 撤销功能
-        findViewById(R.id.action_undo).setOnClickListener(new View.OnClickListener() {
+        findViewById(R.id.action_undo).setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
                 mNoteEditor.undo();
@@ -1707,7 +2086,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         });
 
         // 加粗功能
-        findViewById(R.id.action_bold).setOnClickListener(new View.OnClickListener() {
+        findViewById(R.id.action_bold).setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
                 mNoteEditor.setBold();
@@ -1715,7 +2094,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         });
 
         // 斜体功能
-        findViewById(R.id.action_italic).setOnClickListener(new View.OnClickListener() {
+        findViewById(R.id.action_italic).setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
                 mNoteEditor.setItalic();
@@ -1723,7 +2102,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
         });
 
         // 下划线功能
-        findViewById(R.id.action_underline).setOnClickListener(new View.OnClickListener() {
+        findViewById(R.id.action_underline).setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
                 mNoteEditor.setUnderline();

src/Notes-master/src/net/micode/notes/ui/NoteItemData.java

@@ -24,6 +24,7 @@ import net.micode.notes.data.Contact;
 import net.micode.notes.data.Notes;
 import net.micode.notes.data.Notes.NoteColumns;
 import net.micode.notes.tool.DataUtils;
+import net.micode.notes.ui.NoteEditActivity;
 
 /**
  * 笔记项数据类

src/Notes-master/src/net/micode/notes/ui/NotesListActivity.java

@@ -20,6 +20,7 @@ import android.app.Activity;
 import net.micode.notes.ui.PasswordInputActivity;
 import android.app.AlertDialog;
 import android.app.Dialog;
+import android.app.SearchManager;
 import android.appwidget.AppWidgetManager;
 import android.content.AsyncQueryHandler;
 import android.content.ContentResolver;
@@ -41,6 +42,7 @@ import android.view.ContextMenu;
 import android.view.ContextMenu.ContextMenuInfo;
 import android.view.Display;
 import android.view.HapticFeedbackConstants;
+import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -50,12 +52,16 @@ import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.View.OnCreateContextMenuListener;
 import android.view.View.OnTouchListener;
+import android.widget.TextView.OnEditorActionListener;
+import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.AdapterView.OnItemLongClickListener;
 import android.widget.Button;
 import android.widget.EditText;
+import android.widget.ImageButton;
+import android.widget.LinearLayout;
 import android.widget.ListView;
 import android.widget.PopupMenu;
 import android.widget.TextView;
@@ -65,6 +71,7 @@ import net.micode.notes.R;
 import net.micode.notes.data.Notes;
 import net.micode.notes.data.Notes.NoteColumns;
 import net.micode.notes.data.Notes.TextNote;
+import net.micode.notes.data.NotesDatabaseHelper;
 import net.micode.notes.gtask.remote.GTaskSyncService;
 import net.micode.notes.model.ChecklistManager;
 import net.micode.notes.model.WorkingNote;
@@ -80,9 +87,14 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.util.HashSet;
+import java.util.ArrayList;
+import java.util.LinkedHashSet;
+import java.util.Set;
 
 import android.os.Build;
+import android.view.Gravity;
 import android.view.ViewConfiguration;
+import android.graphics.Color;
 import java.lang.reflect.Field;
 
 /**
@@ -99,6 +111,26 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
 
     private static final int MENU_FOLDER_VIEW = 1;
 
+    // 标签云相关控件
+    private LinearLayout mTagCloudSection;         // 标签云区域
+    private LinearLayout mTagCloudContainer;       // 标签云容器
+    private Button mAllNotesTag;                   // 全部笔记标签
+    private String mCurrentFilterTag;              // 当前过滤标签
+
+    // 搜索历史相关
+    private static final String PREFERENCE_SEARCH_HISTORY = "search_history";  // 搜索历史偏好设置键
+    private static final int MAX_SEARCH_HISTORY = 20;  // 最大搜索历史记录数
+    private String mSearchQuery;  // 当前搜索查询字符串
+    private boolean mIsSearchMode;  // 是否处于搜索模式
+
+    // 实时搜索相关
+    private LinearLayout mSearchBar;  // 搜索栏容器
+    private EditText mSearchEditText;  // 搜索输入框
+    private ImageButton mClearSearchButton;  // 清除搜索按钮
+    private static final int SEARCH_DEBOUNCE_DELAY = 300;  // 搜索防抖延迟时间（毫秒）
+    private Runnable mSearchRunnable;  // 搜索任务
+    private long mLastSearchTime;  // 上次搜索时间
+
     private static final int MENU_FOLDER_CHANGE_NAME = 2;
 
     private static final String PREFERENCE_ADD_INTRODUCTION = "net.micode.notes.introduction";
@@ -277,6 +309,103 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         mIsChecklistMode = false;
         updateModeButtons();
         mChecklistManager = new ChecklistManager(mContentResolver);
+
+        // 初始化搜索相关控件
+        mSearchBar = (LinearLayout) findViewById(R.id.search_bar);
+        mSearchEditText = findViewById(R.id.et_search);
+        mClearSearchButton = (ImageButton) findViewById(R.id.btn_clear_search);
+
+        // 设置搜索监听器
+        initSearchListeners();
+
+        // 标签云功能已移除，相关代码已注释
+        // mTagCloudSection = findViewById(R.id.tag_cloud_section);
+        // mTagCloudContainer = findViewById(R.id.tag_cloud_container);
+        // mAllNotesTag = findViewById(R.id.tag_all_notes);
+        // mCurrentFilterTag = null;
+        //
+        // // 加载标签云
+        // loadTagCloud();
+    }
+
+    /**
+     * 初始化搜索相关监听器
+     */
+    private void initSearchListeners() {
+        // 初始化搜索任务
+        mSearchRunnable = new Runnable() {
+            @Override
+            public void run() {
+                // 执行搜索查询：如果已经处于搜索模式，只更新搜索结果，不退出搜索模式
+                // 这样可以确保搜索栏在用户输入时保持可见
+                if (mIsSearchMode) {
+                    startAsyncNotesListQuery();
+                } else if (!TextUtils.isEmpty(mSearchQuery)) {
+                    // 如果不在搜索模式但有搜索字符串，进入搜索模式
+                    setSearchMode(true, mSearchQuery);
+                }
+            }
+        };
+
+        // 搜索输入框文本变化监听器
+        mSearchEditText.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+                // 文本变化前的处理
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+                // 文本变化时的处理
+                mSearchQuery = s.toString();
+                Log.d(TAG, "Search text changed: '" + mSearchQuery + "'");
+                // 移除之前的搜索任务
+                mSearchEditText.removeCallbacks(mSearchRunnable);
+                // 延迟执行搜索任务
+                Log.d(TAG, "Posting search runnable with delay: " + SEARCH_DEBOUNCE_DELAY + "ms");
+                mSearchEditText.postDelayed(mSearchRunnable, SEARCH_DEBOUNCE_DELAY);
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                // 文本变化后的处理
+            }
+        });
+
+        // 搜索输入框编辑器动作监听器（处理虚拟键盘上的搜索按钮）
+        mSearchEditText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
+            @Override
+            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
+                // 检查是否是搜索动作
+                if (actionId == EditorInfo.IME_ACTION_SEARCH) {
+                    // 获取搜索查询
+                    String query = mSearchEditText.getText().toString().trim();
+                    if (!TextUtils.isEmpty(query)) {
+                        // 设置搜索模式并执行搜索
+                        setSearchMode(true, query);
+                        // 保存搜索历史
+                        saveSearchHistory(query);
+                        // 隐藏软键盘
+                        hideSoftInput(mSearchEditText);
+                    }
+                    return true;
+                }
+                return false;
+            }
+        });
+
+        // 清除搜索按钮点击监听器
+        mClearSearchButton.setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                // 清除搜索内容
+                mSearchEditText.setText("");
+                // 移除未执行的搜索任务
+                mSearchEditText.removeCallbacks(mSearchRunnable);
+                // 退出搜索模式
+                exitSearchMode();
+            }
+        });
     }
 
     /**
@@ -500,32 +629,189 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         String selection;
         String[] selectionArgs;
 
-        if (mCurrentFolderId == Notes.ID_ROOT_FOLDER) {
-            if (mIsChecklistMode) {
-                // 根文件夹下的清单模式：只显示清单类型的笔记
-                selection = "(" + NoteColumns.TYPE + "=" + Notes.TYPE_CHECKLIST + " AND " + NoteColumns.PARENT_ID + "=?)" +
+        // 基础查询条件
+        if (mIsSearchMode) {
+            // 搜索模式：忽略清单模式，搜索所有笔记和清单
+            if (mCurrentFolderId == Notes.ID_ROOT_FOLDER) {
+                // 根文件夹下的搜索：显示所有类型的笔记（普通笔记、清单、文件夹、通话记录文件夹）
+                selection = "(" + NoteColumns.TYPE + " IN (" + Notes.TYPE_NOTE + ", " + Notes.TYPE_CHECKLIST + ", " + Notes.TYPE_FOLDER + ") AND " + NoteColumns.PARENT_ID + "=?)" +
                         " OR (" + NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER + " AND " + NoteColumns.NOTES_COUNT + ">0)";
             } else {
-                // 根文件夹下的笔记模式：显示文件夹、普通笔记和非空通话记录文件夹
-                selection = "(" + NoteColumns.TYPE + "<>" + Notes.TYPE_SYSTEM + " AND " + NoteColumns.PARENT_ID + "=?)" +
-                        " OR (" + NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER + " AND " + NoteColumns.NOTES_COUNT + ">0)";
+                // 普通文件夹下的搜索：显示所有类型的笔记（普通笔记和清单）
+                selection = NoteColumns.PARENT_ID + "=? AND " + NoteColumns.TYPE + " IN (" + Notes.TYPE_NOTE + ", " + Notes.TYPE_CHECKLIST + ")";
             }
         } else {
-            if (mIsChecklistMode) {
-                // 普通文件夹下的清单模式：只显示清单类型的笔记
-                selection = NoteColumns.PARENT_ID + "=? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_CHECKLIST;
+            // 非搜索模式：使用原来的逻辑
+            if (mCurrentFolderId == Notes.ID_ROOT_FOLDER) {
+                if (mIsChecklistMode) {
+                    // 根文件夹下的清单模式：只显示清单类型的笔记
+                    selection = "(" + NoteColumns.TYPE + "=" + Notes.TYPE_CHECKLIST + " AND " + NoteColumns.PARENT_ID + "=?)" +
+                            " OR (" + NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER + " AND " + NoteColumns.NOTES_COUNT + ">0)";
+                } else {
+                    // 根文件夹下的笔记模式：显示文件夹、普通笔记和非空通话记录文件夹
+                    selection = "(" + NoteColumns.TYPE + "<>" + Notes.TYPE_SYSTEM + " AND " + NoteColumns.PARENT_ID + "=?)" +
+                            " OR (" + NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER + " AND " + NoteColumns.NOTES_COUNT + ">0)";
+                }
             } else {
-                // 普通文件夹下的笔记模式：只显示普通笔记
-                selection = NoteColumns.PARENT_ID + "=? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE;
+                if (mIsChecklistMode) {
+                    // 普通文件夹下的清单模式：只显示清单类型的笔记
+                    selection = NoteColumns.PARENT_ID + "=? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_CHECKLIST;
+                } else {
+                    // 普通文件夹下的笔记模式：只显示普通笔记
+                    selection = NoteColumns.PARENT_ID + "=? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE;
+                }
             }
         }
 
+        // 添加搜索过滤条件
+        if (mIsSearchMode && !TextUtils.isEmpty(mSearchQuery)) {
+            // 搜索过滤需要使用子查询，因为内容存储在data表中
+            String searchFilter = " AND " + NoteColumns.ID + " IN (" +
+                    "SELECT " + Notes.DataColumns.NOTE_ID +
+                    " FROM " + NotesDatabaseHelper.TABLE.DATA +
+                    " WHERE (" + Notes.DataColumns.MIME_TYPE + "=?" +
+                    " AND " + Notes.DataColumns.CONTENT + " LIKE ?" +
+                    ") OR (" + Notes.DataColumns.MIME_TYPE + "=?" +
+                    " AND " + Notes.DataColumns.CONTENT + " LIKE ?" +
+                    "))";
+
+            // 将整个基础查询条件用括号括起来，确保搜索条件应用到所有笔记
+            // 这是修复搜索功能的关键：解决SQL操作符优先级问题
+            selection = "(" + selection + ")";
+            selection += searchFilter;
+        }
+
+        // 添加标签过滤条件
+        if (mCurrentFilterTag != null) {
+            // 标签过滤需要使用子查询，因为标签存储在data表中
+            String tagFilter = " AND " + NoteColumns.ID + " IN (" +
+                    "SELECT " + Notes.DataColumns.NOTE_ID +
+                    " FROM " + NotesDatabaseHelper.TABLE.DATA +
+                    " WHERE " + Notes.DataColumns.MIME_TYPE + "=?" +
+                    " AND " + Notes.DataColumns.CONTENT + "=?" +
+                    ")";
+            selection += tagFilter;
+        }
+
+        // 准备选择参数
+        ArrayList<String> argsList = new ArrayList<>();
+        argsList.add(String.valueOf(mCurrentFolderId));
+
+        // 添加搜索参数
+        if (mIsSearchMode && !TextUtils.isEmpty(mSearchQuery)) {
+            String searchPattern = "%" + mSearchQuery + "%";
+            // 搜索普通文本内容
+            argsList.add(Notes.DataConstants.NOTE);
+            argsList.add(searchPattern);
+            // 搜索标签
+            argsList.add(Notes.DataConstants.TAG);
+            argsList.add(searchPattern);
+        }
+
+        // 添加标签参数
+        if (mCurrentFilterTag != null) {
+            argsList.add(Notes.DataConstants.TAG);
+            argsList.add(mCurrentFilterTag);
+        }
+
+        selectionArgs = argsList.toArray(new String[argsList.size()]);
+
         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");
+                Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, selectionArgs,
+                NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
+    }
+
+    /**
+     * 加载标签云
+     */
+    private void loadTagCloud() {
+        // 清空现有标签（保留"全部笔记"标签）
+        while (mTagCloudContainer.getChildCount() > 1) {
+            mTagCloudContainer.removeViewAt(1);
+        }
+
+        // 查询所有标签，按使用次数排序
+        String tagQuery = "SELECT " + Notes.DataColumns.CONTENT +
+                " FROM " + NotesDatabaseHelper.TABLE.DATA +
+                " WHERE " + Notes.DataColumns.MIME_TYPE + "=?" +
+                " GROUP BY " + Notes.DataColumns.CONTENT +
+                " ORDER BY COUNT(*) DESC";
+
+        Cursor cursor = mContentResolver.query(
+                Notes.CONTENT_DATA_URI,
+                new String[]{Notes.DataColumns.CONTENT},
+                Notes.DataColumns.MIME_TYPE + "=?",
+                new String[]{Notes.DataConstants.TAG},
+                Notes.DataColumns.CONTENT + " ASC");
+
+        if (cursor != null) {
+            while (cursor.moveToNext()) {
+                String tagName = cursor.getString(0);
+                if (!TextUtils.isEmpty(tagName)) {
+                    // 创建标签按钮
+                    Button tagButton = new Button(this);
+                    tagButton.setText(tagName);
+                    tagButton.setBackgroundResource(R.drawable.bg_btn_set_color);
+                    tagButton.setTextColor(Color.WHITE);
+                    tagButton.setTextSize(14);
+                    tagButton.setSingleLine(true);
+                    tagButton.setTag(tagName);
+                    // tagButton.setOnClickListener(new OnClickListener() {
+                    //     @Override
+                    //     public void onClick(View v) {
+                    //         onTagClick(v);
+                    //     }
+                    // });
+
+                    // 设置标准化布局参数
+                    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
+                            LinearLayout.LayoutParams.WRAP_CONTENT, 36);
+                    params.setMargins(0, 0, 8, 0);
+                    params.gravity = Gravity.CENTER_VERTICAL;
+                    tagButton.setLayoutParams(params);
+
+                    // 设置标准化内边距
+                    tagButton.setPadding(12, 0, 12, 0);
+
+                    // 添加到标签云容器
+                    mTagCloudContainer.addView(tagButton);
+                }
+            }
+            cursor.close();
+        }
     }
 
+
+    // 标签云功能已移除，onTagClick方法已删除
+    // public void onTagClick(View v) {
+    //     if (v.getId() == R.id.tag_all_notes) {
+    //         // 显示全部笔记
+    //         mCurrentFilterTag = null;
+    //         mAllNotesTag.setTextColor(Color.WHITE);
+    //         mAllNotesTag.setBackgroundResource(R.drawable.bg_btn_set_color);
+    //     } else {
+    //         // 显示特定标签的笔记
+    //         mCurrentFilterTag = (String) v.getTag();
+    //         mAllNotesTag.setTextColor(Color.BLACK);
+    //         mAllNotesTag.setBackgroundResource(android.R.drawable.btn_default);
+    //     }
+    //
+    //     // 更新其他标签的样式
+    //     for (int i = 1; i < mTagCloudContainer.getChildCount(); i++) {
+    //         Button tagButton = (Button) mTagCloudContainer.getChildAt(i);
+    //         if (tagButton.getTag().equals(mCurrentFilterTag)) {
+    //             tagButton.setTextColor(Color.WHITE);
+    //             tagButton.setBackgroundResource(R.drawable.bg_btn_set_color);
+    //         } else {
+    //             tagButton.setTextColor(Color.BLACK);
+    //             tagButton.setBackgroundResource(android.R.drawable.btn_default);
+    //         }
+    //     }
+    //
+    //     // 重新查询笔记列表
+    //     startAsyncNotesListQuery();
+    // }
+
     /**
      * 后台查询处理器 - 处理异步数据库查询
      */
@@ -540,9 +826,12 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
          */
         @Override
         protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
+            Log.d(TAG, "onQueryComplete called with token: " + token + ", cursor: " + cursor + ", count: " + (cursor != null ? cursor.getCount() : -1));
+
             switch (token) {
                 case FOLDER_NOTE_LIST_QUERY_TOKEN:
                     // 查询笔记列表完成，更新适配器
+                    Log.d(TAG, "Updating notes list adapter with cursor, count: " + (cursor != null ? cursor.getCount() : -1));
                     mNotesListAdapter.changeCursor(cursor);
                     break;
                 case FOLDER_LIST_QUERY_TOKEN:
@@ -615,7 +904,7 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
         View view = LayoutInflater.from(this).inflate(R.layout.dialog_edit_text, null);
         final EditText etPassword = (EditText) view.findViewById(R.id.et_foler_name);
         etPassword.setHint(R.string.password_hint);
-        etPassword.setInputType(android.text.InputType.TYPE_CLASS_TEXT | 
+        etPassword.setInputType(android.text.InputType.TYPE_CLASS_TEXT |
                 android.text.InputType.TYPE_TEXT_VARIATION_PASSWORD);
         builder.setTitle(R.string.password_set_dialog_title);
         builder.setView(view);
@@ -630,14 +919,14 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
 
         final Dialog dialog = builder.create();
         dialog.show();
-        
+
         final Button positive = (Button) dialog.findViewById(android.R.id.button1);
         positive.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
                 String password = etPassword.getText().toString();
                 if (TextUtils.isEmpty(password)) {
-                    Toast.makeText(NotesListActivity.this, 
+                    Toast.makeText(NotesListActivity.this,
                             R.string.password_empty, Toast.LENGTH_SHORT).show();
                     return;
                 }
@@ -1175,12 +1464,71 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
                 startActivity(intent);
                 break;
             }
+            case R.id.menu_exit_search:
+                // 退出搜索模式
+                exitSearchMode();
+                return true;
             default:
                 break;
         }
         return true;
     }
 
+    @Override
+    protected void onNewIntent(Intent intent) {
+        super.onNewIntent(intent);
+
+        // 处理搜索意图
+        if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
+            String query = intent.getStringExtra(SearchManager.QUERY);
+            if (!TextUtils.isEmpty(query)) {
+                setSearchMode(true, query);
+                // 添加到搜索历史
+                saveSearchHistory(query);
+                // 显示软键盘
+                InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
+                if (imm != null) {
+                    imm.showSoftInput(mSearchEditText, InputMethodManager.SHOW_IMPLICIT);
+                }
+            }
+        }
+    }
+
+    /**
+     * 设置搜索模式
+     * @param isSearchMode 是否处于搜索模式
+     * @param searchQuery 搜索查询字符串
+     */
+    private void setSearchMode(boolean isSearchMode, String searchQuery) {
+        mIsSearchMode = isSearchMode;
+        mSearchQuery = searchQuery;
+
+        // 移除任何待执行的搜索任务，避免状态冲突
+        mSearchEditText.removeCallbacks(mSearchRunnable);
+
+        startAsyncNotesListQuery();
+
+        // 更新UI，显示或隐藏搜索相关控件
+        if (isSearchMode) {
+            // 搜索模式下显示搜索栏
+            mSearchBar.setVisibility(View.VISIBLE);
+            // 设置搜索查询文本
+            mSearchEditText.setText(searchQuery);
+            // 将光标定位到文本末尾
+            mSearchEditText.setSelection(searchQuery.length());
+        } else {
+            // 退出搜索模式，隐藏搜索栏
+            mSearchBar.setVisibility(View.GONE);
+        }
+    }
+
+    /**
+     * 退出搜索模式
+     */
+    public void exitSearchMode() {
+        setSearchMode(false, null);
+    }
+
     @Override
     public boolean onSearchRequested() {
         startSearch(null, false, null /* appData */, false);
@@ -1192,8 +1540,87 @@ public class NotesListActivity extends Activity implements OnClickListener, OnIt
      * OMO
      */
     public void handleSearchClick(View view) {
-        // 调用系统搜索方法
-        onSearchRequested();
+        Log.d(TAG, "Search button clicked, showing search bar");
+        // 显示搜索栏并聚焦到搜索输入框
+        setSearchMode(true, mSearchQuery != null ? mSearchQuery : "");
+        mSearchEditText.requestFocus();
+        // 显示软键盘
+        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
+        if (imm != null) {
+            imm.showSoftInput(mSearchEditText, InputMethodManager.SHOW_IMPLICIT);
+        }
+        Log.d(TAG, "Search bar displayed, search mode: " + mIsSearchMode);
+    }
+
+    /**
+     * 保存搜索历史
+     * @param query 搜索查询字符串
+     */
+    private void saveSearchHistory(String query) {
+        if (TextUtils.isEmpty(query)) {
+            return;
+        }
+
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
+        Set<String> historySet = prefs.getStringSet(PREFERENCE_SEARCH_HISTORY, new HashSet<String>());
+
+        // 创建新的集合以支持修改
+        Set<String> newHistorySet = new LinkedHashSet<String>(historySet);
+
+        // 如果已存在，先移除，然后添加到开头
+        newHistorySet.remove(query);
+        // 创建有序集合以保持插入顺序
+        LinkedHashSet<String> orderedHistorySet = new LinkedHashSet<String>();
+        orderedHistorySet.add(query);
+        orderedHistorySet.addAll(newHistorySet);
+
+        // 限制历史记录数量
+        if (orderedHistorySet.size() > MAX_SEARCH_HISTORY) {
+            // 移除最旧的记录
+            String[] historyArray = orderedHistorySet.toArray(new String[0]);
+            for (int i = MAX_SEARCH_HISTORY; i < historyArray.length; i++) {
+                orderedHistorySet.remove(historyArray[i]);
+            }
+        }
+
+        // 保存到偏好设置
+        prefs.edit().putStringSet(PREFERENCE_SEARCH_HISTORY, orderedHistorySet).apply();
+    }
+
+    /**
+     * 获取搜索历史
+     * @return 搜索历史集合
+     */
+    private Set<String> getSearchHistory() {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
+        return prefs.getStringSet(PREFERENCE_SEARCH_HISTORY, new HashSet<String>());
+    }
+
+    /**
+     * 清除搜索历史
+     */
+    private void clearSearchHistory() {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
+        prefs.edit().remove(PREFERENCE_SEARCH_HISTORY).apply();
+    }
+
+    /**
+     * 添加退出搜索模式的菜单项
+     * @param menu 菜单对象
+     * @return 是否成功创建菜单
+     */
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.note_list_options, menu);
+
+        // 在搜索模式下添加退出搜索菜单项
+        if (mIsSearchMode) {
+            MenuItem exitSearchItem = menu.add(Menu.NONE, R.id.menu_exit_search, Menu.NONE, "退出搜索");
+            exitSearchItem.setIcon(android.R.drawable.ic_menu_close_clear_cancel);
+            exitSearchItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
+        }
+
+        return true;
     }
     private void exportNoteToText() {
         final BackupUtils backup = BackupUtils.getInstance(NotesListActivity.this);

src/Notes-master/src/net/micode/notes/ui/NotesListAdapter.java

@@ -27,6 +27,7 @@ import android.widget.CursorAdapter;
 
 import net.micode.notes.data.Notes;
 import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.ui.NoteEditActivity;
 
 import java.util.Collection;
 import java.util.HashMap;

src/Notes-master/src/net/micode/notes/ui/PasswordInputActivity.java

@@ -28,6 +28,7 @@ import android.widget.Toast;
 
 import net.micode.notes.R;
 import net.micode.notes.tool.PasswordUtils;
+import net.micode.notes.ui.NoteEditActivity;
 
 /**
  * 密码输入Activity