app/src/main/res/drawable/ic_shutter.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/ic_shutter_pressed" android:state_pressed="true" />
<item android:drawable="@drawable/ic_shutter_focused" android:state_focused="true" />
<item android:drawable="@drawable/ic_shutter_normal" />
</selector>