android-calculatorpp/app/src/main/res/layout/main_calculator.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
  ~
  ~ Email: se.solovyev@gmail.com
  ~ Site:  http://se.solovyev.org
  -->

<LinearLayout
    xmlns:a="http://schemas.android.com/apk/res/android"
    a:id="@+id/main"
    style="@style/CppMain"
    a:layout_width="match_parent"
    a:layout_height="match_parent"
    a:orientation="vertical">

    <LinearLayout
        a:id="@+id/editor"
        a:layout_width="match_parent"
        a:layout_height="0dp"
        a:layout_weight="2"
        a:orientation="horizontal" />

    <LinearLayout
        a:id="@+id/partial_keyboard"
        a:layout_width="match_parent"
        a:layout_height="0dp"
        a:layout_weight="1"
        a:baselineAligned="false">

        <include
            layout="@layout/cpp_app_button_equals_no_bg"
            a:layout_width="0dp"
            a:layout_height="match_parent"
            a:layout_weight="1" />

        <FrameLayout
            a:id="@+id/display"
            a:layout_width="0dp"
            a:layout_height="match_parent"
            a:layout_weight="4" />

    </LinearLayout>

    <LinearLayout
        a:id="@+id/keyboard"
        a:layout_width="match_parent"
        a:layout_height="0dp"
        a:layout_weight="5"
        a:orientation="vertical" />

</LinearLayout>