How to make a circular ripple on a button when it's being clicked?

Question

Background

On the dialer app of Android, when you start searching for something, and you click the arrow button on the left of the EditText, you get a circular ripple

Answer 1

In Kotlin / Java you can do the following

fun View.applyCircularRippleEffect() {
    val backgroundResId = context.getResource(android.R.attr.actionBarItemBackground)

    if (backgroundResId != 0) {
        setBackgroundResource(backgroundResId)
        isClickable = true
        isFocusable = true
    }
}

// getResource extension
fun Context.getResource(resourceId: Int): Int {
    val out = TypedValue()
    theme.resolveAttribute(resourceId, out, true)

    return out.resourceId
}