course_background_course_play_bottom.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_enabled="true">
        <shape>
            <gradient
                android:angle="90"
                android:endColor="#00000000"
                android:startColor="#0A000000"
                />
        </shape>
    </item>
</selector>