<FrameLayout 
    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"
    android:stretchColumns="*"
    tools:context=".Mapa" >

    <ImageView
                android:id="@+id/imgplano"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_gravity="left"
                android:contentDescription="@string/Imagenplano"
                android:paddingBottom="5dp" />

</FrameLayout>