OnLocationChanged callback is never called

android geolocation locationmanager

I am trying to get the users current location using the LocationManager. I have done a lot of research and can't seem to find anyone with the same problem. The OnLocationChanged callback never seems to be called. Below is my various code and the logcat.

protected LocationListener locationListener;
protected LocationManager locationManager;
protected Context context;

My OnCreate() method

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.v(TAG, "IN ON CREATE");

    this.context = getActivity();

    registerLocationUpdates();
}

My registerLocationUpdates method

void registerLocationUpdates() {
    Criteria criteria = new Criteria();
    criteria.setAccuracy(Criteria.ACCURACY_LOW);
    criteria.setPowerRequirement(Criteria.POWER_LOW);
    criteria.setAltitudeRequired(false);
    criteria.setBearingRequired(false);

    locationManager = (LocationManager)getActivity().getSystemService(LOCATION_SERVICE);

    provider = locationManager.getBestProvider(criteria, true);

    // Cant get a hold of provider
    if (provider == null) {
        Log.v(TAG, "Provider is null");
        showNoProvider();
        return;
    } else {
        Log.v(TAG, "Provider: " + provider);
    }

    locationListener = new MyLocationListener();

    locationManager.requestLocationUpdates(provider, 1L, 1f, locationListener);

    // connect to the GPS location service
    Location oldLocation = locationManager.getLastKnownLocation(provider);

    if (oldLocation != null)  {
        Log.v(TAG, "Got Old location");
        latitude = Double.toString(oldLocation.getLatitude());
        longitude = Double.toString(oldLocation.getLongitude());
        waitingForLocationUpdate = false;
        getNearbyStores();
    } else {
        Log.v(TAG, "NO Last Location found");
    }
}

My LocationListener

private class MyLocationListener implements LocationListener {

    public void onLocationChanged(Location location) {
        latitude = Double.toString(location.getLatitude());
        longitude = Double.toString(location.getLongitude());

        Log.v(TAG, "IN ON LOCATION CHANGE");

        if (waitingForLocationUpdate) {
            getNearbyStores();
            waitingForLocationUpdate = false;
        }

        locationManager.removeUpdates(this);
    }

    public void onStatusChanged(String s, int i, Bundle bundle) {
        Log.v(TAG, "Status changed: " + s);
    }

    public void onProviderEnabled(String s) {
        Log.e(TAG, "PROVIDER DISABLED: " + s);
    }

    public void onProviderDisabled(String s) {
        Log.e(TAG, "PROVIDER DISABLED: " + s);
    }
}

My permissions in the AndroidManifest

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

And finally the logcat after I run my app

01-25 09:43:10.963: VERBOSE/NearbyListFragment(3060): IN ON CREATE
01-25 09:43:10.963: VERBOSE/LocationManagerService(1329): getProviders
01-25 09:43:10.963: VERBOSE/LocationManagerService(1329): getProviders
01-25 09:43:10.973: VERBOSE/LocationManagerService(1329): getProviders
01-25 09:43:10.983: VERBOSE/NearbyListFragment(3060): Provider: gps
01-25 09:43:10.983: DEBUG/LocationManager(3060): requestLocationUpdates: provider = gps, listener = co.fusionweb.dealsplus.app.NearbyItems$NearbyListFragment$MyLocationListener@46ef4680
01-25 09:43:10.983: DEBUG/GpsLocationProvider(1329): setMinTime 1
01-25 09:43:10.983: VERBOSE/NearbyListFragment(3060): NO Last Location found
01-25 09:43:10.983: VERBOSE/LocationManagerService(1329): _requestLocationUpdates: listener = Receiver{47421e68 Listener android.os.BinderProxy@47421a68}
01-25 09:43:11.003: VERBOSE/countingFragment(3060): IN ON CREATE VIEW
01-25 09:43:11.003: WARN/GpsLocationProvider(1329): Duplicate add listener for co.fusionweb.dealsplus
01-25 09:43:11.013: VERBOSE/ScrollListener(3060): In Constructor
01-25 09:43:11.013: VERBOSE/ScrollListener(3060): Scrolling
01-25 09:43:11.033: DEBUG/GpsLocationProvider(1329): startNavigating
01-25 09:43:11.043: DEBUG/lib_locapi(1329): loc_eng_set_qos_time_out(standalone = 60, agps = 89)
01-25 09:43:11.043: DEBUG/lib_locapi(1329): loc_eng_set_qos_accuracy(accuracy = 50)
01-25 09:43:11.043: VERBOSE/lib_locapi(1329): persist.radio.agps.mode: []
01-25 09:43:11.043: DEBUG/lib_locapi(1329): loc_eng_set_position mode, client = 1, interval = 1, mode = 1
01-25 09:43:11.043: VERBOSE/lib_locapi(1329): loc_eng_ioctl called: client = 1, ioctl_type = 2
01-25 09:43:11.043: VERBOSE/locapi_rpc_glue(1329): loc_ioctl
01-25 09:43:11.043: DEBUG/RPC(1329): written RPC packet size: [96]
01-25 09:43:11.043: DEBUG/RPC(1329): read RPC packet
01-25 09:43:11.043: DEBUG/RPC(1329): read RPC packet size: [28]
01-25 09:43:11.043: VERBOSE/locapi_rpc_glue(1329): loc_api_sync_ioctl: select_id = 0, loc_ioctl returned 0
01-25 09:43:11.043: DEBUG/RPC(1329): read RPC packet
01-25 09:43:11.043: DEBUG/RPC(1329): read RPC packet size: [80]
01-25 09:43:11.043: VERBOSE/locapi_rpc_glue(1329): Callback received: 80 (cb_id=0x5310000 handle=1)
01-25 09:43:11.043: DEBUG/RPC(1329): written RPC packet size: [28]
01-25 09:43:11.043: VERBOSE/lib_locapi(1329): loc_eng_ioctl result: client = 1, ioctl_type = 2, SUCCESS
01-25 09:43:11.043: DEBUG/lib_locapi(1329): loc_eng_start
01-25 09:43:11.043: DEBUG/locapi_rpc_glue(1329): loc_start_fix
01-25 09:43:11.043: DEBUG/RPC(1329): written RPC packet size: [44]
01-25 09:43:11.043: DEBUG/RPC(1329): read RPC packet
01-25 09:43:11.053: DEBUG/RPC(1329): read RPC packet size: [28]
01-25 09:43:11.103: DEBUG/RPC(1329): read RPC packet
01-25 09:43:11.103: DEBUG/RPC(1329): read RPC packet size: [80]
01-25 09:43:11.113: VERBOSE/locapi_rpc_glue(1329): Callback received: 100 (cb_id=0x5310000 handle=1)
01-25 09:43:11.113: VERBOSE/lib_locapi(1329): process_deferred_action: pthread_cond_wait returned
01-25 09:43:11.113: DEBUG/lib_locapi(1329): loc_eng_report_status: GPS_STATUS_SESSION_BEGIN
01-25 09:43:11.113: DEBUG/lib_locapi(1329): loc_eng_report_status: update status
01-25 09:43:11.113: VERBOSE/GpsLocationProvider(1329): reportStatus status: 1
01-25 09:43:11.113: DEBUG/GpsLocationProvider(1329): Acquiring wakelock
01-25 09:43:11.123: DEBUG/RPC(1329): written RPC packet size: [28]
01-25 09:43:11.183: DEBUG/PowerManagerService(1329): New lightsensor value:40, lcdValue:77
01-25 09:43:11.273: DEBUG/RPC(1329): read RPC packet
01-25 09:43:11.273: DEBUG/RPC(1329): read RPC packet size: [80]
01-25 09:43:11.273: VERBOSE/locapi_rpc_glue(1329): Callback received: 100 (cb_id=0x5310000 handle=1)
01-25 09:43:11.273: VERBOSE/lib_locapi(1329): process_deferred_action: pthread_cond_wait returned
01-25 09:43:11.273: DEBUG/lib_locapi(1329): loc_eng_report_status: GPS_STATUS_ENGINE_ON
01-25 09:43:11.273: DEBUG/lib_locapi(1329): loc_eng_report_status: update status
01-25 09:43:11.273: VERBOSE/GpsLocationProvider(1329): reportStatus status: 3

And the android SDK location parts of the logcat keep repeating them selves. I have tried everything that i can think of and have seen on google and stackoverflow. Als just as a side note i have been able to get it to work on a 2.3 device using the requestSingleUpdate which is available in API 9 and by following the guide A Deep Dive into Location but i need it to work on 2.1 or 2.2 and higher using the old SDK. SO if you have any hints or would like to know more please let me know. Thanks in advance.


Solution 1:

It looks like you setup should work, since it doesn't, I would make your example as simple as possible in order to troubleshoot. I would make your request look like 

requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);

This way you get ALL the updates possible. And comment out the part about getting the last known location. It's not needed yet.

Then in onLocationChanged(), just have 

Log.v(TAG, "IN ON LOCATION CHANGE, lat=" + latitude + ", lon=" + longitude);

Comment out the rest so that you keep your listener active. This should give you a stream of updates on a real device. On the emulator, you'll need to use DDMS, and you'll get one GPS update each time you press send.

Solution 2:

Replacing

LocationManager.GPS_PROVIDER

with

LocationManager.NETWORK_PROVIDER

solved my problem.

Here is code snippet of my location manager

 LocationManager locationManager = (LocationManager) getActivity().getSystemService(LOCATION_SERVICE);

//Check for Location permissions, Marshmallow and above

        if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
                && ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.

            Toast.makeText(getActivity(), "Not Enough Permission", Toast.LENGTH_SHORT).show();
            return;
        }

//Get current location to start with

        Location myLocation = locationManager.getLastKnownLocation(LocationManager.PASSIVE_PROVIDER);

        currentLatitude = myLocation.getLatitude();
        currentLongitude = myLocation.getLongitude();

// Request location update using LocationManager.NETWORK_PROVIDER

        locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,
                MIN_TIME_BW_UPDATES,
                MIN_DISTANCE_CHANGE_FOR_UPDATES, MapFragment.this);

Solution 3:

GPS Provider will disable when device in low power or use power save mode then in that case we can not receive onLocationChanged

GPS Provider hardly ever return the location if you stay inside house or building (only work well in outdoor)

Therefore, in my app I will use both GPS_PROVIDER and NETWORK_PROVIDER to receive onLocationChanged() better

https://developer.android.com/guide/topics/location/strategies.html#Updates

To request location updates from the GPS provider, use GPS_PROVIDER instead of NETWORK_PROVIDER. You can also request location updates from both the GPS and the Network Location Provider by calling requestLocationUpdates() twice—once for NETWORK_PROVIDER and once for GPS_PROVIDER.

Solution 4:

As Steve Blackwell wrote, your setup is good. What you can try is to understand if you 100% have a GPS fixed signal! I have installed a nice GPS Tester application (from the play store) and it will show you if you have a fix or not and to which satellites you are connected and what is the connection strength. This was the reason my OnLocationChanged() never called.. I tried running it from within a building :\

good luck!

Related

R: 2 functions with the same name in 2 different packages
ZooKeeper alternatives? (cluster coordination service) [closed]
Linux: When to use scatter/gather IO (readv, writev) vs a large buffer with fread
SQL Server 2008 - IF NOT EXISTS INSERT ELSE UPDATE
py.test skips test class if constructor is defined
How to keep wrapped flex-items the same width as the elements on the previous row?
Could not load file or assembly 'System.ComponentModel.Annotations, Version=4.1.0.0
The History Behind the Definition of a 'String'
What is the difference between Tomcat and TomEE, TomEE and TomEE Plus
What is the difference between File and FileInfo in C#?
Can git do a diff of the working copy with stash
iOS 7 UIRefreshControl tintColor not working for beginRefreshing