activity_download_image.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.godoro.androidclients.DownloadImageActivity">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:id="@+id/messageView"
        android:text="@string/imageToDownload"
        />

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:id="@+id/imageView"
        android:layout_above="@+id/downloadButton"
        android:layout_below="@+id/messageView"
        android:contentDescription="@string/imageContent"
        android:padding="10dp"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/downloadImage"
        android:id="@+id/downloadButton"
        android:onClick="onClickDownloadImage"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />



</RelativeLayout>