[android] how to add background image to activity?

You can set the "background image" to an activity by setting android:background xml attributes as followings:

(Here, for example, Take a LinearLayout for an activity and setting a background image for the layout(i.e. indirectly to an activity))

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/LinearLayout01" 
              android:layout_width="fill_parent" 
              android:layout_height="fill_parent" 
              xmlns:android="http://schemas.android.com/apk/res/android"
              android:background="@drawable/icon">
 </LinearLayout>

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