activity_main.xml
<RelativeLayout xmlns:android="http: xmlns:tools="http: android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="it.docsalvi.notizie.MainActivity" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="@+id/button_carica"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="@string/button_carica" />
<ScrollView
android:id="@+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/textView_notizie"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/text_placeholder"
android:textAppearance="?android:attr/textAppearanceMedium" />
</ScrollView>
</LinearLayout>
<ProgressBar
android:id="@+id/progressBar"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:visibility="invisible" />
</RelativeLayout>