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