Ripple effect over a RecyclerView item containing ImageView

Question

I have a RecyclerView that expands the following grid item :

Answer 1

Above answers are correct. but I want to recommend the usage of android:foreground instead as it shows the ripple infront of the imageView.

On your root view, add the following.

android:foreground="@drawable/ripple_effect_color_primary"
android:clickable="true"
android:focusable="true"

I know it's a pretty late answer to such old thread. But who knows, someone might actually find it useful.