protected void manageUpdateListener(boolean register, SensorEventListener listener) {
if (register) {
if (!listeningForUpdate) {
sensorAttached = sensorHelper.attach(proxy.getTiContext().getActivity());
if (sensorAttached) {
LocationManager locationManager =
(LocationManager)
proxy.getTiContext().getActivity().getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();
String provider = locationManager.getBestProvider(criteria, true);
if (provider != null) {
Location location = locationManager.getLastKnownLocation(provider);
if (location != null) {
geomagneticField =
new GeomagneticField(
(float) location.getLatitude(),
(float) location.getLongitude(),
(float) location.getAltitude(),
System.currentTimeMillis());
}
}
sensorHelper.registerListener(SENSORS, listener, SensorManager.SENSOR_DELAY_UI);
listeningForUpdate = true;
}
}
} else {
if (listeningForUpdate) {
sensorHelper.unregisterListener(SENSORS, listener);
if (sensorHelper.isEmpty()) {
listeningForUpdate = false;
sensorHelper.detach();
}
}
}
}
public void onResume() {
if (proxy.getTiContext().hasEventListener(EVENT_HEADING, proxy)) {
manageUpdateListener(true, updateListener);
}
}