@Override
public void onPause() {
unregisterReceiver(compassBroadcastReceiver);
unregisterReceiver(locationBroadcastReceiver);
AppService appService = serviceConnection.getService();
if (appService != null) {
// stop location updates when not recording track
if (!appService.getTrackRecorder().isRecording()) {
appService.stopLocationUpdates();
}
// stop compass updates in any case
appService.stopSensorUpdates();
}
serviceConnection.unbindAppService();
super.onPause();
}
/** onResume event handler */
@Override
protected void onResume() {
// registering receiver for compass updates
registerReceiver(compassBroadcastReceiver, new IntentFilter(Constants.ACTION_COMPASS_UPDATES));
// registering receiver for location updates
registerReceiver(
locationBroadcastReceiver, new IntentFilter(Constants.ACTION_LOCATION_UPDATES));
// bind to GPS service
// once bound appServiceConnectionCallback will be called
serviceConnection.bindAppService();
super.onResume();
}
@Override
public void run() {
if (serviceConnection == null) {
return;
}
AppService appService = serviceConnection.getService();
if (appService == null) {
Toast.makeText(
TrackpointsListActivity.this,
R.string.gps_service_not_connected,
Toast.LENGTH_SHORT)
.show();
return;
}
if (!appService.isListening()) {
// location updates stopped at this time, so let's start them
appService.startLocationUpdates();
} else {
// gpsInUse = false means we are in process of stopping
// listening
appService.setGpsInUse(true);
// if both isListening and isGpsInUse are true - do nothing
// most likely we are in the process of recording track
}
// this activity requires compass data
appService.startSensorUpdates();
// let's not wait for LocationListener to receive updates and get last known location
currentLocation = appService.getCurrentLocation();
waypointsArrayAdapter.notifyDataSetChanged();
}