Ripple effect on Buttons placed over KenBurnsView doesn't work about kenburnsview HOT 5 CLOSED

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/background"
    android:clickable="true"
    android:orientation="vertical">


    <RelativeLayout
        android:id="@+id/header"
        android:layout_width="match_parent"
        android:layout_height="@dimen/nav_drawer_header_height">

        <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <com.flaviofaria.kenburnsview.KenBurnsView
                android:id="@+id/header_cover"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:src="@drawable/cover_1" />

            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <ImageView
                    android:id="@+id/header_toggle"
                    android:layout_width="50dp"
                    android:layout_height="30dp"
                    android:layout_alignParentBottom="true"
                    android:layout_alignParentRight="true"
                    android:layout_marginBottom="10dp"
                    android:layout_marginRight="10dp"
                    android:padding="10dp"
                    android:src="@drawable/toggle_down" />

            </RelativeLayout>

        </FrameLayout>

    </RelativeLayout>

    <RelativeLayout
        android:id="@+id/nav_toggle_container"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"></RelativeLayout>

</LinearLayout>

<ripple xmlns:android="http://schemas.android.com/apk/res/android"
    android:color="@android:color/white"
    android:drawSelectorOnTop="true"> <!-- ripple color -->

</ripple>

toggle.setBackground(getResources().getDrawable(R.drawable.ripple));