1 <?xml version="1.0" encoding="utf-8"?>

     2 <merge xmlns:android="http://schemas.android.com/apk/res/android">

     3     <ImageButton

     4     	android:id="@+id/btnBack"

     5     	android:layout_width="wrap_content"

     6     	android:layout_height="50dip"

     7     	android:layout_alignParentBottom="true"

     8     	android:layout_alignParentLeft="true"

     9     	android:adjustViewBounds="true"

    10     	android:scaleType="centerInside"

    11     	android:background="@android:color/transparent"

    12     	android:src="@drawable/backbutton"/>

    13 </merge>