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

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

<!--
  ~ Copyright 2013 serso aka se.solovyev
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~    http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License.
  ~
  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  ~ Contact details
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  ~ Email: se.solovyev@gmail.com
  ~ Site:  http://se.solovyev.org
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<LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
			  xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
			  a:orientation="vertical"
			  a:layout_width="fill_parent"
			  a:layout_height="fill_parent"
			  a:background="#ff000000">

	<LinearLayout
			a:id="@+id/simplePad"
			a:layout_width="fill_parent"
			a:layout_height="fill_parent"
			a:orientation="vertical"
			a:layout_gravity="center">

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

			<ImageView
					a:id="@+id/calibrationArrowLeft"
					a:layout_gravity="left"
					a:layout_width="80dp"
					a:layout_height="80dp"/>

			<org.solovyev.android.view.drag.DirectionDragButton
					a:id="@+id/calibrationButtonLeft"
					a:text=""
					c:textUp="@string/c_up"
					c:textDown="@string/c_down"
					a:layout_width="80dp"
					a:layout_height="80dp"
					style="?cpp_digit_button_style"/>

			<org.solovyev.android.view.drag.DirectionDragButton
					a:id="@+id/calibrationButtonRight"
					a:text=""
					c:textUp="@string/c_up"
					c:textDown="@string/c_down"
					a:layout_width="80dp"
					a:layout_height="80dp"
					style="?cpp_digit_button_style"/>

			<ImageView
					a:id="@+id/calibrationArrowRight"
					a:layout_gravity="right"
					a:layout_width="80dp"
					a:layout_height="80dp"/>
		</LinearLayout>
	</LinearLayout>

	<Button
			a:id="@+id/calibrationStart"
			a:text="@string/c_restart"
			a:layout_width="wrap_content"
			a:layout_height="wrap_content"
			a:onClick="restartClickHandler"
			a:layout_gravity="bottom"/>
</LinearLayout>