diff --git a/MiNote/app/src/main/java/net/micode/notes/ui/AlarmAlertActivity.java b/MiNote/app/src/main/java/net/micode/notes/ui/AlarmAlertActivity.java
index dad46f1..4bd7acf 100644
--- a/MiNote/app/src/main/java/net/micode/notes/ui/AlarmAlertActivity.java
+++ b/MiNote/app/src/main/java/net/micode/notes/ui/AlarmAlertActivity.java
@@ -50,6 +50,8 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         //Bundle类型的数据与Map类型的数据相似，都是以key-value的形式存储数据的
+        //onsaveInstanceState方法是用来保存Activity的状态的
+        //能从onCreate的参数savedInsanceState中获得状态数据
         requestWindowFeature(Window.FEATURE_NO_TITLE);
 
         final Window win = getWindow();