what-the-bank/resources/res/drawable/bg_shadow_bottom_gradient.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" shape="rectangle">
    <gradient
        startColor="#66000000"
        endColor="@android:color/transparent"
        angle="90"
        type="linear"/>
</shape>