change image of RelativeLayout android

Change image of relativelayout  dynamically in Android; Change the image and assign the resource image dynamically;

Code Snippet:

Place the relativeLayout  in the screen like; Here you can see that SRC is used to assign the screen for Image View. Here need to assign the background image to the Resource images;

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"  android:id="@+id/rlScreen" android:background="@drawable/apple1" >

Change the relativeLayout  Image dynamically by;

rlScreen.setBackgroundResource(R.drawable.zip);

There zip present in the resourse file;