res/layout-land/stopwatch_fragment.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2012 The Android Open Source Project

     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.
-->
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:baselineAligned="false"
    android:orientation="horizontal"
    android:paddingBottom="@dimen/fab_height">

    <!-- This FrameLayout reserves half the screen for the stopwatch. -->
    <FrameLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1">

        <!-- This FrameLayout draws the stopwatch centered within its half of the screen. -->
        <FrameLayout
            android:layout_width="@dimen/circle_size"
            android:layout_height="@dimen/circle_size"
            android:layout_gravity="center"
            android:gravity="center"
            android:padding="16dp">

            <com.android.deskclock.timer.CountingTimerView
                android:id="@+id/stopwatch_time_text"
                android:layout_width="match_parent"
                android:layout_height="match_parent" />

            <com.android.deskclock.stopwatch.StopwatchCircleView
                android:id="@+id/stopwatch_time"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="@null" />
        </FrameLayout>

    </FrameLayout>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/laps_list"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_weight="1" />

</LinearLayout>