Shaped drawable with selectableItemBackground as background

Having round_corners.xml:

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"       android:shape="rectangle">    <solid android:color="@android:color/transparent"/>    <corners android:radius="15dp" />    <stroke        android:width="1px"        android:color="#000000" /></shape>

And my_ripple.xml:

<?xml version="1.0" encoding="utf-8"?><ripple xmlns:android="http://schemas.android.com/apk/res/android"        android:color="?android:attr/colorControlHighlight">    <item android:id="@android:id/mask">        <shape android:shape="rectangle">            <solid android:color="#000000" />            <corners android:radius="15dp" />        </shape>    </item>    <item android:drawable="@drawable/round_corners" /></ripple>

And button:

<Button    android:background="@drawable/my_ripple"    ... />

Will result in this:

See this article.

I have a simpler version of the first answer:

<ripple    xmlns:android="http://schemas.android.com/apk/res/android"    android:color="?colorControlHighlight"> <!-- default ripple color -->    <item>        <!-- the background shape when it's not being clicked -->        <shape android:shape="rectangle">            <solid android:color="@color/colorPrimary" />            <corners android:radius="32dp" />        </shape>    </item></ripple>

Just apply it as background but remember to REMOVE THE SHADOW if it applys to Button:

style="?borderlessButtonStyle"

Good luck!

Here's a simpler solution now in 2020 (API >= 21 because we're using the ?attr syntax) :

<ripple    xmlns:android="http://schemas.android.com/apk/res/android"    android:color="?colorControlHighlight">    <!-- 🡡 the ripple's color (1) -->    <!-- 🡣 no `id` so our <shape> will be drawn and not just used as mask -->    <item>        <shape>            <corners android:radius="9dp" />            <solid android:color="@color/white" />        </shape>    </item></ripple>

(1) If you don't override colorControlHighlight in your theme, the ripple's color will be Android's default. If you do override it but still want to use Android's default use ?android:colorControlHighlight instead