path: root/app/src/main/res/drawable/cust_button_primary_black.xml

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true" android:drawable="@drawable/cust_button_primary_black_pressed"/>
    <item android:drawable="@drawable/cust_button_primary_black_released"/>
</selector>