main.xml

<LinearLayout 
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="vertical" 
   android:layout_width="fill_parent"
   android:layout_height="fill_parent">
   <ImageView 
      android:id="@+id/splash" 
      android:layout_width="wrap_content"
      android:layout_height="fill_parent" 
      android:src="@drawable/ic_launcher"
      android:layout_gravity="center"/>
   
</LinearLayout>