diff --git a/java/net/micode/notes/gtask/remote/GTaskASyncTask.java b/java/net/micode/notes/gtask/remote/GTaskASyncTask.java
index 52c898a..1d91b1f 100644
--- a/java/net/micode/notes/gtask/remote/GTaskASyncTask.java
+++ b/java/net/micode/notes/gtask/remote/GTaskASyncTask.java
@@ -31,20 +31,20 @@ import net.micode.notes.ui.NotesPreferenceActivity;
 
 public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
 
-    private static int GTASK_SYNC_NOTIFICATION_ID = 5234235;
+    private static final int GTASK_SYNC_NOTIFICATION_ID = 5234235;
 
+    // 同步完成监听器接口
     public interface OnCompleteListener {
         void onComplete();
     }
 
+    // 相关上下文和管理器
     private Context mContext;
-
     private NotificationManager mNotifiManager;
-
     private GTaskManager mTaskManager;
-
     private OnCompleteListener mOnCompleteListener;
 
+    // 构造函数
     public GTaskASyncTask(Context context, OnCompleteListener listener) {
         mContext = context;
         mOnCompleteListener = listener;
@@ -53,10 +53,12 @@ public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
         mTaskManager = GTaskManager.getInstance();
     }
 
+    // 取消同步
     public void cancelSync() {
         mTaskManager.cancelSync();
     }
 
+    // 发布进度信息
     public void publishProgess(String message) {
         publishProgress(new String[] {
             message
@@ -79,8 +81,11 @@ public class GTaskASyncTask extends AsyncTask<Void, String, Integer> {
 //        }
 //        notification.setLatestEventInfo(mContext, mContext.getString(R.string.app_name), content,
 //                pendingIntent);
+//        int GTASK_SYNC_NOTIFICATION_ID = 5234235;
 //        mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification);
 //    }
+
+// 显示通知
 private void showNotification(int tickerId, String content) {
     PendingIntent pendingIntent;
     if (tickerId != R.string.ticker_success) {
@@ -101,6 +106,7 @@ private void showNotification(int tickerId, String content) {
     mNotifiManager.notify(GTASK_SYNC_NOTIFICATION_ID, notification);
 }
 
+    // 后台执行同步任务
     @Override
     protected Integer doInBackground(Void... unused) {
         publishProgess(mContext.getString(R.string.sync_progress_login, NotesPreferenceActivity
@@ -108,6 +114,7 @@ private void showNotification(int tickerId, String content) {
         return mTaskManager.sync(mContext, this);
     }
 
+    // 更新进度
     @Override
     protected void onProgressUpdate(String... progress) {
         showNotification(R.string.ticker_syncing, progress[0]);
@@ -116,6 +123,7 @@ private void showNotification(int tickerId, String content) {
         }
     }
 
+    // 同步完成后的处理
     @Override
     protected void onPostExecute(Integer result) {
         if (result == GTaskManager.STATE_SUCCESS) {
@@ -140,3 +148,5 @@ private void showNotification(int tickerId, String content) {
         }
     }
 }
+
+