Set Wallpaper on application background

Question

I am making an application, in which i want to set wallpaper on application background, not on the homescreen background. Can anyone there guide me how to do this?

Answer 1

image extension not required....

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".SecondActivity">

<ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:src="@drawable/hello"/>

 <Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="hello"
    android:layout_centerInParent="true"/>


</RelativeLayout>

Answer 2

Note that BackGround or the Image view should always on top of other view

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">

<ImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:scaleType="centerCrop"
    android:src="@drawable/bu"/>

<TextView android:text="@string/hello_world"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="40dp"
    android:textSize="45sp"/>
<TextView android:text="Good_Day"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:padding="40dp"
    android:textSize="45sp"/>

</RelativeLayout>

Answer 3

As I have commented you need to do following - Suppose you want to Set a background of your Apps Main Screen. You can set the background of your parent view of your XML layout or you can have an ImageView as bottom layer and rest view above this using the relative layout. And now you can set the ImageView as you wish.