<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.hw4.GalleryActivity"
    tools:ignore="MergeRootFrame" >

    <GridView
        android:id="@+id/gallery"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_margin="5dp"
        android:layout_weight="1"
        android:columnWidth="50dp"
        android:numColumns="4" />

    <Button
        android:id="@+id/buttonExit"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:text="@string/exit_button_text" />

</LinearLayout>

