Make dial button have focused background

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

    <item android:state_pressed="true"

        android:drawable="@drawable/btn_call_pressed" />

    <item android:state_focused="true"

        android:drawable="@drawable/btn_dial_selected" />

    <item

        android:drawable="@android:color/transparent" />

</selector>