res/layout/file_explorer_dfrag.xml

<LinearLayout 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"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/button_alphabetically"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:background="@drawable/item_generic_selector"
            android:text="Alphabetically"
            android:textSize="12sp" />

        <Button
            android:id="@+id/button_lastDateModified"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:background="@drawable/item_generic_selector"
            android:text="Last Modified"
            android:textSize="12sp" />
    </LinearLayout>

    <TextView
        android:id="@+id/path"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:textSize="12sp" />

    <ListView
        android:id="@android:id/list"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

</LinearLayout>