fragment_example_viewer.xml

<RelativeLayout 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"
    tools:context="com.murrayc.galaxyzoo.app.ExampleViewerFragment"
    android:gravity="top"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginLeft="@dimen/activity_horizontal_margin"
        android:layout_marginRight="@dimen/activity_horizontal_margin"
        android:layout_marginTop="@dimen/activity_vertical_margin"
        android:layout_marginBottom="@dimen/activity_vertical_margin"
        android:adjustViewBounds="false"
        android:contentDescription="@string/content_description_example_image"
        android:layout_gravity="top"
        android:scaleType="fitStart"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:transitionName="@string/transition_subject_image" />

    <include layout="@layout/progress" />

</RelativeLayout>