diff --git a/widget/NoteWidgetProvider.java b/widget/NoteWidgetProvider.java
new file mode 100644
index 0000000..ec6f819
--- /dev/null
+++ b/widget/NoteWidgetProvider.java
@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package net.micode.notes.widget;
+import android.app.PendingIntent;
+import android.appwidget.AppWidgetManager;
+import android.appwidget.AppWidgetProvider;
+import android.content.ContentValues;
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.util.Log;
+import android.widget.RemoteViews;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.tool.ResourceParser;
+import net.micode.notes.ui.NoteEditActivity;
+import net.micode.notes.ui.NotesListActivity;
+
+public abstract class NoteWidgetProvider extends AppWidgetProvider {
+    public static final String [] PROJECTION = new String [] {
+        NoteColumns.ID,
+        NoteColumns.BG_COLOR_ID,
+        NoteColumns.SNIPPET
+    };
+
+    public static final int COLUMN_ID           = 0;
+    public static final int COLUMN_BG_COLOR_ID  = 1;
+    public static final int COLUMN_SNIPPET      = 2;
+
+    private static final String TAG = "NoteWidgetProvider";
+
+    @Override
+    public void onDeleted(Context context, int[] appWidgetIds) {
+        ContentValues values = new ContentValues();
+        values.put(NoteColumns.WIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
+        for (int i = 0; i < appWidgetIds.length; i++) {
+            context.getContentResolver().update(Notes.CONTENT_NOTE_URI,
+                    values,
+                    NoteColumns.WIDGET_ID + "=?",
+                    new String[] { String.valueOf(appWidgetIds[i])});
+        }
+    }
+
+    private Cursor getNoteWidgetInfo(Context context, int widgetId) {
+        return context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
+                PROJECTION,
+                NoteColumns.WIDGET_ID + "=? AND " + NoteColumns.PARENT_ID + "<>?",
+                new String[] { String.valueOf(widgetId), String.valueOf(Notes.ID_TRASH_FOLER) },
+                null);
+    }
+
+    protected void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+        update(context, appWidgetManager, appWidgetIds, false);
+    }
+
+    private void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds,
+            boolean privacyMode) {
+        for (int i = 0; i < appWidgetIds.length; i++) {
+            if (appWidgetIds[i] != AppWidgetManager.INVALID_APPWIDGET_ID) {
+                int bgId = ResourceParser.getDefaultBgId(context);
+                String snippet = "";
+                Intent intent = new Intent(context, NoteEditActivity.class);
+                intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
+                intent.putExtra(Notes.INTENT_EXTRA_WIDGET_ID, appWidgetIds[i]);
+                intent.putExtra(Notes.INTENT_EXTRA_WIDGET_TYPE, getWidgetType());
+
+                Cursor c = getNoteWidgetInfo(context, appWidgetIds[i]);
+                if (c != null && c.moveToFirst()) {
+                    if (c.getCount() > 1) {
+                        Log.e(TAG, "Multiple message with same widget id:" + appWidgetIds[i]);
+                        c.close();
+                        return;
+                    }
+                    snippet = c.getString(COLUMN_SNIPPET);
+                    bgId = c.getInt(COLUMN_BG_COLOR_ID);
+                    intent.putExtra(Intent.EXTRA_UID, c.getLong(COLUMN_ID));
+                    intent.setAction(Intent.ACTION_VIEW);
+                } else {
+                    snippet = context.getResources().getString(R.string.widget_havenot_content);
+                    intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
+                }
+
+                if (c != null) {
+                    c.close();
+                }
+
+                RemoteViews rv = new RemoteViews(context.getPackageName(), getLayoutId());
+                rv.setImageViewResource(R.id.widget_bg_image, getBgResourceId(bgId));
+                intent.putExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, bgId);
+                /**
+                 * Generate the pending intent to start host for the widget
+                 */
+                PendingIntent pendingIntent = null;
+                if (privacyMode) {
+                    rv.setTextViewText(R.id.widget_text,
+                            context.getString(R.string.widget_under_visit_mode));
+                    pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], new Intent(
+                            context, NotesListActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
+                } else {
+                    rv.setTextViewText(R.id.widget_text, snippet);
+                    pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], intent,
+                            PendingIntent.FLAG_UPDATE_CURRENT);
+                }
+
+                rv.setOnClickPendingIntent(R.id.widget_text, pendingIntent);
+                appWidgetManager.updateAppWidget(appWidgetIds[i], rv);
+            }
+        }
+    }
+
+    protected abstract int getBgResourceId(int bgId);
+
+    protected abstract int getLayoutId();
+
+    protected abstract int getWidgetType();
+}
diff --git a/widget/NoteWidgetProvider_2x.java b/widget/NoteWidgetProvider_2x.java
new file mode 100644
index 0000000..fdd043d
--- /dev/null
+++ b/widget/NoteWidgetProvider_2x.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package net.micode.notes.widget;
+
+import android.appwidget.AppWidgetManager;
+import android.content.Context;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.tool.ResourceParser;
+
+/**
+ * NoteWidgetProvider_2x 是 NoteWidgetProvider 的具体实现类，
+ * 负责管理和更新 2x 尺寸的便签桌面小部件。
+ *
+ * 2x 小部件通常指占用 2 列 x 2 行网格空间的桌面部件，
+ * 适合展示中等长度的便签内容。
+ */
+
+
+public class NoteWidgetProvider_2x extends NoteWidgetProvider {
+    /**
+     * 当小部件更新时调用此方法。
+     * 继承自 AppWidgetProvider，在此实现中调用父类的 update 方法处理更新逻辑。
+     *
+     * @param context 应用上下文
+     * @param appWidgetManager AppWidgetManager 实例，用于管理小部件
+     * @param appWidgetIds 需要更新的小部件 ID 数组
+     */
+    @Override
+    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+        // 调用父类的 update 方法处理小部件更新逻辑
+        super.update(context, appWidgetManager, appWidgetIds);
+    }
+
+    /**
+     * 获取 2x 小部件的布局资源 ID。
+     * 此方法由父类抽象方法定义，返回适用于 2x 小部件的布局文件。
+     *
+     * @return 布局资源 ID (R.layout.widget_2x)
+     */
+    @Override
+    protected int getLayoutId() {
+        return R.layout.widget_2x;
+    }
+
+    /**
+     * 根据背景 ID 获取对应的 2x 小部件背景资源。
+     * 此方法由父类抽象方法定义，使用 ResourceParser 工具类获取适合 2x 小部件的背景图资源。
+     *
+     * @param bgId 背景颜色 ID
+     * @return 对应的背景资源 ID
+     */
+    @Override
+    protected int getBgResourceId(int bgId) {
+        return ResourceParser.WidgetBgResources.getWidget2xBgResource(bgId);
+    }
+
+    /**
+     * 获取当前小部件的类型。
+     * 此方法由父类抽象方法定义，返回标识 2x 小部件的类型常量。
+     *
+     * @return 小部件类型常量 (Notes.TYPE_WIDGET_2X)
+     */
+    @Override
+    protected int getWidgetType() {
+        return Notes.TYPE_WIDGET_2X;
+    }
+}
diff --git a/widget/NoteWidgetProvider_4x.java b/widget/NoteWidgetProvider_4x.java
new file mode 100644
index 0000000..c25cff2
--- /dev/null
+++ b/widget/NoteWidgetProvider_4x.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package net.micode.notes.widget;
+
+import android.appwidget.AppWidgetManager;
+import android.content.Context;
+
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.tool.ResourceParser;
+
+/*
+ * NoteWidgetProvider_4x 是便签应用中 4x 尺寸桌面小部件的实现类。
+ * 负责处理 4x 小部件的更新、布局和样式显示逻辑。
+ *
+ * 4x 小部件通常占用 4 列 x 2 行的桌面空间，适合展示较长内容或更丰富的便签布局。
+ */
+public class NoteWidgetProvider_4x extends NoteWidgetProvider {
+    /*
+     * 当小部件更新时调用此方法。
+     * 继承自 AppWidgetProvider，实现小部件的具体更新逻辑。
+     *
+     * @param context 应用上下文
+     * @param appWidgetManager AppWidgetManager 实例
+     * @param appWidgetIds 需要更新的小部件 ID 数组
+     */
+    @Override
+    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+        // 调用父类的更新方法处理通用逻辑
+        super.update(context, appWidgetManager, appWidgetIds);
+    }
+
+    /*
+     * 获取 4x 小部件的布局资源 ID。
+     *
+     * @return 返回 4x 小部件使用的布局文件资源 ID
+     */
+    protected int getLayoutId() {
+        return R.layout.widget_4x;
+    }
+
+    /*
+     * 根据背景颜色 ID 获取对应的 4x 小部件背景资源。
+     *
+     * @param bgId 背景颜色 ID
+     * @return 返回对应的背景图片资源 ID
+     */
+    @Override
+    protected int getBgResourceId(int bgId) {
+        return ResourceParser.WidgetBgResources.getWidget4xBgResource(bgId);
+    }
+
+    /*
+     * 获取当前小部件的类型。
+     *
+     * @return 返回标识 4x 小部件的类型常量
+     */
+    @Override
+    protected int getWidgetType() {
+        return Notes.TYPE_WIDGET_4X;
+    }
+}