android-calculatorpp/android-app-onscreen/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_weight="1"
			a:layout_width="match_parent"
			a:layout_height="0dp">

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

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

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

		<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_subtraction"/>

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

	</LinearLayout>


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

			<include layout="@layout/widget_left_button"/>
			<include layout="@layout/widget_right_button"/>
			<include layout="@layout/widget_vars_button"/>
			<include layout="@layout/widget_functions_button"/>
			<include layout="@layout/widget_app_button"/>
			<include layout="@layout/widget_history_button"/>

		</LinearLayout>-->

</LinearLayout>