res/layout/sync_status_view.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
/*
 * Copyright (c) 2013 Google Inc.
 *
 * 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:id="@+id/sync_status_bar"
    android:layout_width="match_parent"
    android:layout_height="@dimen/sync_status_bar_height"
    android:layout_gravity="top"
    android:visibility="gone"
    android:background="@android:color/white">

    <LinearLayout android:id="@+id/sync_result"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:padding="5dip"
        android:visibility="gone"
        android:gravity="center_vertical">

        <TextView android:id="@+id/sync_result_text"
            android:layout_width="0dip"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:textSize="12sp"
            android:layout_marginBottom="1dip"
            android:paddingLeft="5dip"
            android:textColor="@android:color/black"
            android:text="@string/no_new_messages" />
    </LinearLayout>

    <LinearLayout android:id="@+id/loading"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="gone"
        android:gravity="center">

        <ProgressBar
            style="?android:attr/progressBarStyle"
            android:indeterminate="true"
            android:layout_width="32dp"
            android:layout_height="32dp" />
    </LinearLayout>
</LinearLayout>