No ripples for MaterialCardView

This is a bug with MaterialCardView. It's overriding the foreground after it's created. I've filled a bug. It should be fixed to show a ripple if the card is clickable without needing to set the foreground.

If you can't wait for a fix you could use CardView from the support lib, or you could change your code to set the foreground drawable after the CardView has been inflated, or we would gladly accept a pull request! Relevant code at: https://github.com/material-components/material-components-android/blob/master/lib/java/com/google/android/material/card/MaterialCardView.java. It can probably use https://github.com/material-components/material-components-android/blob/master/lib/java/com/google/android/material/ripple/RippleUtils.java and a RippleDrawable for SDK >= 21.

In my case, It worked after adding android:clickable="true" and card_view:rippleColor="#cfd8dc" in XML file. Hope it will help to future SO.

<com.google.android.material.card.MaterialCardView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
card_view:cardElevation="2dp"
card_view:rippleColor="#cfd8dc"
android:clickable="true"
card_view:cardCornerRadius="5dp"
card_view:cardUseCompatPadding="true"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android">