android-calculatorpp/android-app/src/main/res/drawable/pane_background.xml

<?xml version="1.0" encoding="utf-8"?><!--
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<shape xmlns:a="http://schemas.android.com/apk/res/android">
	<solid a:color="@color/cpp_pane_background"/>
	<corners a:radius="@dimen/cpp_button_corner"/>
</shape>