app/src/main/res/drawable/black_circle.xml


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<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/black_circle_pressed" android:state_pressed="true"/>
    <item android:drawable="@drawable/black_circle_released"/>
</selector>