android-calculatorpp/android-app/src/main/res/layout/onscreen_keyboard.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
	a:layout_width="match_parent"
	a:layout_height="match_parent"
	a:orientation="vertical">

	<LinearLayout
		a:layout_width="match_parent"
		a:layout_height="0dp"
		a:layout_weight="1">

		<include layout="@layout/cpp_simple_button_7" />

		<include layout="@layout/cpp_simple_button_8" />

		<include layout="@layout/cpp_simple_button_9" />

		<include layout="@layout/cpp_simple_button_multiplication" />

		<include layout="@layout/cpp_simple_button_erase" />

	</LinearLayout>

	<LinearLayout
		a:layout_width="match_parent"
		a:layout_height="0dp"
		a:layout_weight="1">

		<include layout="@layout/cpp_simple_button_4" />

		<include layout="@layout/cpp_simple_button_5" />

		<include layout="@layout/cpp_simple_button_6" />

		<include layout="@layout/cpp_simple_button_division" />

		<include layout="@layout/cpp_simple_button_percent" />

	</LinearLayout>

	<LinearLayout
		a:layout_width="match_parent"
		a:layout_height="0dp"
		a:layout_weight="1">

		<include layout="@layout/cpp_simple_button_1" />

		<include layout="@layout/cpp_simple_button_2" />

		<include layout="@layout/cpp_simple_button_3" />

		<include layout="@layout/cpp_simple_button_plus" />

		<include layout="@layout/cpp_simple_button_power" />
	</LinearLayout>

	<LinearLayout
		a:layout_width="match_parent"
		a:layout_height="0dp"
		a:layout_weight="1">

		<include layout="@layout/cpp_simple_button_round_brackets" />

		<include layout="@layout/cpp_simple_button_0" />

		<include layout="@layout/cpp_simple_button_dot" />

		<include layout="@layout/cpp_simple_button_minus" />

		<include layout="@layout/cpp_simple_button_app" />

	</LinearLayout>

</LinearLayout>