diff --git a/jqy1.txt b/jqy1.txt
new file mode 100644
index 0000000..be864f6
--- /dev/null
+++ b/jqy1.txt
@@ -0,0 +1,50 @@
+Menu_note_list.xml
+<!--    背景图功能  -->
+    <item
+        android:id="@+id/menu_a1"
+        android:title="@string/menu_a1"/>
+    <item
+        android:id="@+id/menu_a2"
+        android:title="@string/menu_a2"/>
+    <item
+        android:id="@+id/menu_a3"
+        android:title="@string/menu_a3"/>
+ 
+NotelistActivity类
+//背景图功能
+    public int mode=-1;
+//    私密模式
+    public static int secret_mode = 0;
+//        背景图功能
+        getWindow().setBackgroundDrawableResource(R.drawable.a3);
+        getWindow().setBackgroundDrawableResource(R.drawable.a2);
+        getWindow().setBackgroundDrawableResource(R.drawable.a1);
+//        背景功能
+        if(mode==-1)
+            menu.findItem(R.id.menu_a1).setVisible(false);
+        else if (mode==0)
+            menu.findItem(R.id.menu_a2).setVisible(false);
+        else if (mode==1)
+            menu.findItem(R.id.menu_a3).setVisible(false);
+
+//            背景功能
+            case R.id.menu_a1:{
+                mode=-1;
+                getWindow().setBackgroundDrawableResource(R.drawable.a1);
+                break;
+            }
+            case R.id.menu_a2:{
+                mode=0;
+                getWindow().setBackgroundDrawableResource(R.drawable.a2);
+                break;
+            }
+            case R.id.menu_a3:{
+                mode=1;
+                getWindow().setBackgroundDrawableResource(R.drawable.a3);
+                break;
+            }
+Values_string.xml
+<!--    背景图功能 -->
+    <string name="menu_a2">Background: a2</string>
+    <string name="menu_a1">Background: a1</string>
+    <string name="menu_a3">Background: a3</string>
\ No newline at end of file