How can I get current location on Android?

Question

I use this code for getting current location:

LocationManager lm = (LocationManager) this
        .getSystemService(Context.LOCATION_SERVICE);
List<String> providers = lm.getProviders(true);

/*
 * Loop over the array backwards, and if you get an accurate location,
 * then break out the loop
 */
Location l = null;

for (int i = providers.size() - 1; i >= 0; i--) {

    l = lm.getLastKnownLocation(providers.get(i));
    if (l != null)
        break;
}

if (l==null) {
    return;
}
Toast.makeText(this, String.valueOf(l.getLatitude()), Toast.LENGTH_LONG).show();

But I never see a latitude, because l is null always. My Manifest file contains ACCESS_FINE_LOCATION and INTERNET permissions. Where have I made mistake?

Refer http://developer.android.com/guide/topics/location/obtaining-user-location.html. You need to add a location listener and request for updates. — blessanm86, Dec 07 '11 at 06:40
Why you use this code ? if not necesory to use it then use this: http://stackoverflow.com/questions/1513485/how-do-i-get-the-current-gps-location-programmatically-in-android and also refer the developer site here:http://developer.android.com/reference/android/location/LocationManager.html — Shreyash Mahajan, Dec 07 '11 at 06:47
This may work for you i guess: http://stackoverflow.com/a/3145655/265167 — Yaqub Ahmad, Dec 07 '11 at 06:51

score 3 · Accepted Answer · edited Apr 20 '12 at 05:37

3

Look into this excellent explanation:

http://android-developers.blogspot.com/2011/06/deep-dive-into-location.html

At the moment you just ask some available providers for last known location, which and break on first answer. This could be not the provider you like.

edited Apr 20 '12 at 05:37

Gili

86,244
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answered Dec 07 '11 at 08:01

Konstantin Pribluda

12,329
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35

score 0 · Answer 2 · answered Dec 07 '11 at 08:10

0

Just call the method requestLocationUpdates of LocationManager, and implement the LocationListener to handle the location update.

http://developer.android.com/reference/android/location/LocationManager.html

answered Dec 07 '11 at 08:10

Tang Ke

1,508
12
12

score 0 · Answer 3 · answered Dec 07 '11 at 08:33

I think best opensource project to implement location is foursquare on google code: http://code.google.com/p/foursquared/

Related code is in com.joelapenna.foursquared.loaction.BestLoactionListener

You can check out how does they deal with Loaction , and how to update current loaction,it help me a lot.

Shabbir Panjesha · Answer 4 · 2011-12-08T04:47:11.050

Following code works for me. I have used GPS as well Network Service to determine the current location of the device.

private void findCurrentLocation()
{
    locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
    if (locationManager == null)
    {
        Toast.makeText(CityActivity.this, "Location Manager Not Available",
        Toast.LENGTH_SHORT).show();
        return;
    }
    location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
    if (location == null)
        location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
    if (location != null)
    {
        lat = location.getLatitude();
        lng = location.getLongitude();
        myFunction(location);
    }
    else
    {
        locationListener = new LocationListener()
        {
            @Override
            public void onStatusChanged(String arg0, int arg1, Bundle arg2)
            {;}

            @Override
            public void onProviderEnabled(String arg0)
            {;}

            @Override
            public void onProviderDisabled(String arg0)
            {;}

            @Override
            public void onLocationChanged(Location l)
            {
                location = l;
                locationManager.removeUpdates(this);
                if (l.getLatitude() == 0 || l.getLongitude() == 0)
                {;}
                else
                {
                    lat = l.getLatitude();
                    lng = l.getLongitude();
                    myFunction(location);
                }
            }
        }
        if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER))
            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, f, locationListener);
        locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 10f, locationListener);
        locationtimer = new CountDownTimer(30000, 5000)
        {
            @Override
            public void onTick(long millisUntilFinished)
            {
                if (location != null)
                    locationtimer.cancel();
            }

            @Override
            public void onFinish()
            {
                if (location == null)
                {;}
            }
        };
        locationtimer.start();
    }
}

sorry by mistake i copy pasted the code somewhere else.Now its correct — Shabbir Panjesha, Dec 07 '11 at 09:58

How can I get current location on Android?

4 Answers4