syncthing-android/src/main/res/layout/dialog_loading.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_gravity="center"
    android:padding="10dip"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <ProgressBar
        style="?android:attr/progressBarStyleLarge"
        android:id="@+id/progress"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/loading_text"
        android:layout_toRightOf="@id/progress"
        android:layout_toEndOf="@id/progress"
        android:layout_alignBottom="@id/progress"
        android:layout_alignTop="@id/progress"
        android:gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</RelativeLayout>