if (from_receiver != null) {
mBearingView.setText(String.format("%3.0f°", from_receiver.bearing));
mDistanceView.setText(String.format("%6.0f m", from_receiver.distance));
if (from_receiver != null) {
mBearingView.setText(String.format("%3.0f°", from_receiver.bearing));
mDistanceView.setText(String.format("%6.0f m", from_receiver.distance));