core/res/res/layout/screen.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2006 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.
-->

<!--
This is the basic layout for a screen, with all of its features enabled.
-->

<!-- Title bar and content -->
<LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"
    android:fitsSystemWindows="true"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
>
    <!-- Popout bar for action modes -->
    <ViewStub android:id="@+id/action_mode_bar_stub"
              android:inflatedId="@+id/action_mode_bar"
              android:layout="@layout/action_mode_bar"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:theme="?attr/actionBarTheme" />

    <!-- Title bar -->
    <RelativeLayout android:id="@android:id/title_container"
        style="?android:attr/windowTitleBackgroundStyle"
        android:layout_width="match_parent"
        android:layout_height="?android:attr/windowTitleSize"
    >
        <ImageView android:id="@android:id/left_icon"
            android:layout_width="16dip"
            android:layout_height="16dip"
            android:layout_marginEnd="5dip"
            android:layout_alignParentStart="true"
            android:layout_centerVertical="true"
            android:visibility="gone"
            android:scaleType="fitCenter"
        />
        <LinearLayout android:id="@+android:id/right_container"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentEnd="true"
            android:layout_centerVertical="true"
        >
            <ImageView android:id="@android:id/right_icon"
                android:layout_width="16dip"
                android:layout_height="16dip"
                android:layout_marginStart="5dip"
                android:layout_gravity="center_vertical"
                android:visibility="gone"
                android:scaleType="fitCenter"
            />
            <ProgressBar android:id="@+id/progress_circular"
                style="?android:attr/progressBarStyleSmallTitle"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginStart="5dip"
                android:layout_gravity="center_vertical"
                android:visibility="gone"
                android:max="10000"
            />
        </LinearLayout>
        <ProgressBar android:id="@+id/progress_horizontal"
            style="?android:attr/progressBarStyleHorizontal"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginStart="2dip"
            android:layout_toStartOf="@android:id/right_container"
            android:layout_toEndOf="@android:id/left_icon"
            android:layout_centerVertical="true"
            android:visibility="gone"
            android:max="10000"
        />
        <TextView android:id="@android:id/title"
            style="?android:attr/windowTitleStyle"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@null"
            android:fadingEdge="horizontal"
            android:scrollHorizontally="true"
            android:gravity="center_vertical"
            android:layout_toStartOf="@android:id/right_container"
            android:layout_toEndOf="@id/left_icon"
        />
    </RelativeLayout>

    <!-- Content -->
    <FrameLayout android:id="@android:id/content"
        android:layout_width="match_parent"
        android:layout_height="0dip"
        android:layout_weight="1"
        android:foregroundGravity="fill_horizontal|top"
        android:foreground="?android:attr/windowContentOverlay"
    />
</LinearLayout>