Finding current location of the user in Android

Question

I am new to Android and I am trying to develop an Android app which shows current location of the user. I am using Genymotion. Now I am using

mLocation=LocationServices.FusedLocationApi.getLastLocation(mGoogleClient); 

to get the last location of the device. The thing is I wanted to get the current location but with this I get mlocation as not null that's fine. But in the map it shows last location of the device always not the current location.

code snippet

@Override
public void onConnected(Bundle bundle) {
    Log.i(TAG, "inside onconnected Location services connected");
    Location mLocation=null;
    mLocationRequest= new LocationRequest();
    mLocationRequest.setInterval(10 * 1000)    ;   
    mLocationRequest.setFastestInterval(1 * 1000);mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) !=
        PackageManager.PERMISSION_GRANTED &&
        ActivityCompat.checkSelfPermission(this,
        Manifest.permission.ACCESS_COARSE_LOCATION) !=
        PackageManager.PERMISSION_GRANTED) {

    }
               mLocation=LocationServices.FusedLocationApi.getLastLocation(mGoogleClient);
    if(mLocation==null)
    {
        Log.d("***Inside mlocation***", "***mlocation is null here");
    }

    if (mLocation != null) {
        onLocationChanged(mLocation);
    }
    LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleClient, mLocationRequest, this);
}

@Override
public void onLocationChanged(Location location) {
    double currentLatitude = location.getLatitude();
    double currentLongitude = location.getLongitude();
    LatLng latLng = new LatLng(currentLatitude,currentLongitude);
    MarkerOptions options = new MarkerOptions()
            .position(latLng)
            .title("Im here!");

    mMap.addMarker(options);
    mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
}

and in onstart() I called googleapi.connect() and I used setUpMapIfNeeded() appropriately.

Please tell me whats the problem in this code. I am trying this for 3 days.

Answer 1

posting simple solution with code.

add permissions inside AndroidManifest.xml file

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

if you app is marshmallow compatible then check run time permission.

add dependency inside gradle file:

compile 'com.google.android.gms:play-services:9.2.0'

implements this two interface in you activity

GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener

and

create googleapiclient object like this in oncreate:

mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();

and make this on start activity

mGoogleApiClient.connect();

here we go on result callback of location on this override method.

public void onConnected(@Nullable Bundle bundle) {
    Location mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
    if (mLastLocation != null) {
        Log.e(TAG, "onConnected: " + String.valueOf(mLastLocation.getLatitude()) + ":" + String.valueOf(mLastLocation.getLongitude()));
    } else {
        Toast.makeText(getApplicationContext(), "Your Location Not Found", Toast.LENGTH_LONG).show();
    }
}

full code of activity is something like that:

public class LocationActivity extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {

private static final String TAG = LocationActivity.class.getSimpleName();

private GoogleApiClient mGoogleApiClient;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_location);


    // Create an instance of GoogleAPIClient.
    if (mGoogleApiClient == null) {
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
    }
}

@Override
protected void onStart() {
// connect googleapiclient
    mGoogleApiClient.connect();
    super.onStart();
}

@Override
protected void onStop() {
// disconnect googleapiclient
    mGoogleApiClient.disconnect();
    super.onStop();
}

@Override
public void onConnected(@Nullable Bundle bundle) {
    Location mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
    if (mLastLocation != null) {
    // here we go you can see current lat long.
        Log.e(TAG, "onConnected: " + String.valueOf(mLastLocation.getLatitude()) + ":" + String.valueOf(mLastLocation.getLongitude()));
    }
}

@Override
public void onConnectionSuspended(int i) {

}

@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {

}}

p.s. googleapiclient is not working in emulator without play services, so you have to test it on real devices. please make sure gps is enable on that device.

if you want to use traditional method for get location then try this tutorial. http://www.androidhive.info/2012/07/android-gps-location-manager-tutorial/

------UPDATE JUNE 15---------

for latest apis check android google post: https://android-developers.googleblog.com/2017/06/reduce-friction-with-new-location-apis.html

Answer 2

For Map Service, It requires Google Play Services. Make Sure Your Genymotion Has PlayService installed if not Get a help from Here To Install Google Play Servies in Genymotion. Happy Coding..!!!

Answer 3

     LocationListener locationListener;
        LocationManager locationManager;
        double latitude;
        double longitude;  


       locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);


        locationListener = new LocationListener()
        {
            @Override


            public void onLocationChanged(Location location) {

    longitude = location.getLongitude();
    latitude = location.getLatitude();
  }

            @Override
            public void onStatusChanged(String provider, int status, Bundle extras) {
            }

            @Override
            public void onProviderEnabled(String provider) {
            }

            @Override
            public void onProviderDisabled(String provider) {
            }
        };
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, 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.

            ;
        }
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,1000, 0, locationListener);



        Log.e("location", longitude + " " + latitude);