szkolnyplus/app/src/main/res/drawable-v21/bg_rounded_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="4dp" />
        </shape>
    </item>
    <item android:drawable="@drawable/bg_rounded_edittext" />
</ripple>