Clockplus/app/src/main/res/layout-land/activity_edit_timer.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context="com.philliphsu.clock2.edittimer.EditTimerActivity">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="?attr/colorPrimary"
        android:theme="@style/AppTheme.AppBarOverlay"
        app:popupTheme="@style/AppTheme.PopupOverlay"
        app:contentInsetStart="72dp">

        <!--Unfortunately, we can't use a style that extends from BaseLabel
        because we want the parent to be `TextAppearance.AppCompat.Title`, whereas
        BaseLabel's parent is `TextAppearance.AppCompat`. We have duplicate attributes,
        but this is fine since this is the only view that is styled like this.-->
        <TextView
            android:id="@+id/label"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="?android:attr/selectableItemBackground"
            style="@style/TextAppearance.AppCompat.Title"
            android:hint="@string/label"
            android:maxLines="1"
            android:ellipsize="end"/>

    </android.support.v7.widget.Toolbar>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal">

        <FrameLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="?attr/colorPrimary">

            <LinearLayout
                android:id="@+id/edit_fields_layout"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:orientation="horizontal"
                android:theme="@style/AppTheme.AppBarOverlay"
                android:layout_gravity="center"
                android:layout_marginBottom="28dp">

                <EditText
                    android:id="@+id/hour"
                    style="@style/TimerText.EditField"/>

                <TextView
                    android:id="@+id/hour_label"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="h"
                    style="@style/TimerText.FieldLabel"/>

                <EditText
                    android:id="@+id/minute"
                    style="@style/TimerText.EditField"/>

                <TextView
                    android:id="@+id/minute_label"
                    android:text="m"
                    style="@style/TimerText.FieldLabel"/>

                <EditText
                    android:id="@+id/second"
                    style="@style/TimerText.EditField"/>

                <TextView
                    android:id="@+id/second_label"
                    android:text="s"
                    style="@style/TimerText.FieldLabel"/>

                <View
                    android:id="@+id/focus_grabber"
                    style="@style/FocusGrabber"/> <!-- Required for right focus search -->

            </LinearLayout>

            <android.support.design.widget.FloatingActionButton
                android:id="@+id/fab"
                android:layout_gravity="bottom|center"
                style="@style/TimerFab"/>

        </FrameLayout>

        <!-- We don't really need the overhead of the GridLayoutNumpad,
        because it would be a major hassle to adapt it for timers. -->
        <!-- We're borrowing the margins for bottom sheets, since this numpad
        was "borrowed" from the bottom sheet numpad anyway. -->
        <android.support.v7.widget.GridLayout
            android:id="@+id/numpad"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            app:columnCount="3">

            <!--We require the buttons' heights to be weighted, so we can't
            reuse the GridLayoutNumpadButton style used by the bottom
            sheet numpad.-->
            <Button
                android:id="@+id/one"
                style="@style/GridLayoutTimerNumpadButton"
                android:text="1"/>

            <Button
                android:id="@+id/two"
                style="@style/GridLayoutTimerNumpadButton"
                android:text="2"/>

            <Button
                android:id="@+id/three"
                style="@style/GridLayoutTimerNumpadButton"
                android:text="3"/>

            <Button
                android:id="@+id/four"
                style="@style/GridLayoutTimerNumpadButton"
                android:text="4"/>

            <Button
                android:id="@+id/five"
                style="@style/GridLayoutTimerNumpadButton"
                android:text="5"/>

            <Button
                android:id="@+id/six"
                style="@style/GridLayoutTimerNumpadButton"
                android:text="6"/>

            <Button
                android:id="@+id/seven"
                style="@style/GridLayoutTimerNumpadButton"
                android:text="7"/>

            <Button
                android:id="@+id/eight"
                style="@style/GridLayoutTimerNumpadButton"
                android:text="8"/>

            <Button
                android:id="@+id/nine"
                style="@style/GridLayoutTimerNumpadButton"
                android:text="9"/>

            <Button
                android:id="@+id/zero"
                style="@style/GridLayoutTimerNumpadButton"
                app:layout_column="1"
                android:text="0"/>

            <!--GridLayoutTimerNumpadButton has text attributes.. but using it
            is a simple way to get the weighted height. I'd rather not define a
            new style based on GridLayoutNumpadElement just for this... -->
            <ImageButton
                android:id="@+id/backspace"
                android:src="@drawable/ic_backspace_24dp"
                style="@style/GridLayoutTimerNumpadButton"
                app:layout_column="2"
                android:tint="?attr/themedIconTint"/>

        </android.support.v7.widget.GridLayout>

    </LinearLayout>

</LinearLayout>