<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"
    android:background="@color/transparent"
    tools:context=".ShowImage" >
    android:layout_gravity="center"
    <ImageView
        android:id="@+id/imgv"

        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/transparent"

        android:scaleType="matrix"/>

    </RelativeLayout>