tt-rss-android/res/layout/main.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/main_flipper"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <LinearLayout
        android:id="@+id/loading_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center" >

        <ProgressBar
            android:id="@+id/loading_progress"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" >
        </ProgressBar>

        <TextView
            android:id="@+id/loading_message"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/loading_message" >
        </TextView>
    </LinearLayout>

    <LinearLayout
        android:id="@+id/main"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >

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

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

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

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

</FrameLayout>