android-calculatorpp/res/layout/number_picker.xml

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

<!--
  ~ Copyright (c) 2009-2011. Created by serso aka se.solovyev.
  ~ For more information, please, contact se.solovyev@gmail.com
  ~ or visit http://se.solovyev.org
  -->

<merge xmlns:android="http://schemas.android.com/apk/res/android">

    <org.solovyev.android.view.NumberPickerButton android:id="@+id/increment"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/timepicker_up_btn" />

    <EditText android:id="@+id/timepicker_input"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:singleLine="true"
        style="?android:attr/textAppearanceLargeInverse"
        android:textColor="@android:color/primary_text_light"
        android:textSize="30sp"
        android:background="@drawable/timepicker_input" />

    <org.solovyev.android.view.NumberPickerButton android:id="@+id/decrement"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/timepicker_down_btn" />

</merge>