<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="20dp"
android:gravity="center"
android:text="@string/Mensagem_Principal"
android:textSize="30sp"
android:textStyle="bold" />
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="10dp"
android:gravity="center"
tools:text="Selecione a Categoria:"
android:textStyle="bold"/>
<ListView
android:id="@+id/listviewCat"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="@string/Categoria"
/>