main_activity.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent">

    <FrameLayout
        android:id="@+id/fragment_frame_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

</LinearLayout>