ElevationCompat.java

<!-- For XML -->
 <View
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:elevation="@dimen/elevation_level_3">
        
<!-- Elevation is ignored in XMLs pre-Lollipop, but remember 
        that in those versions, to preserve Z-axis order in
        layouts, Android handles it on a strict top-bottom 
        ordering (the lower, the higher) -->
        
// Code example
// Does nothing for pre-Lollipop and ViewCompat requires Android Support Library.
ViewCompat.setElevation(view, getResources().getDimensionPixelSize(R.dimen.elevation_dimen));