<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="@drawable/back_wall"
    tools:context="${packageName}.${activityClass}"
    tools:ignore="HardcodedText" >

    <Button
        android:id="@+id/button1"
        android:layout_width="100sp"
        android:layout_height="100sp"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="84dp"
        android:background="@drawable/multi_button"
        android:gravity="center_vertical|center_horizontal"
        android:text="ON"
        android:textColor="#ffffff"
        android:textStyle="bold|normal" />

</RelativeLayout>