designer/src/com/android/tools/idea/uibuilder/palette/preview3.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2015 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.
  -->

<!--
    Default configuration for various views to be rendered
    TODO: Remove views that don't have custom configuration
    TODO: Parameterize the custom width (200dip) in the below?
-->
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="200dip"
    android:layout_height="60dip"
    android:orientation="vertical">

  <TabHost
      android:id="TabHost"
      android:layout_width="match_parent"
      android:layout_height="match_parent">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
      <TabWidget
          android:id="@android:id/tabs"
          android:layout_width="match_parent"
          android:layout_height="wrap_content">
      </TabWidget>
      <FrameLayout
          android:id="@android:id/tabcontent"
          android:layout_width="match_parent"
          android:layout_height="match_parent">
        <LinearLayout
            android:id="@+id/tab1"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">
        </LinearLayout>
        <LinearLayout
            android:id="@+id/tab2"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">
        </LinearLayout>
        <LinearLayout
            android:id="@+id/tab3"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">
        </LinearLayout>
      </FrameLayout>
    </LinearLayout>
  </TabHost>
</LinearLayout>