Android App'te Google API'yi kullanarak Güncel GPS konumunu (enlem-boylam) nasıl edinebilirim?

Question

Google API kullanarak GPS konumunu almak istiyorum.

Kodum:

mGoogleApiClient = new GoogleApiClient.Builder(this) 
       .addConnectionCallbacks(this) 
       .addOnConnectionFailedListener(this) 
       .addApi(LocationServices.API) 
       .build(); 
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 

@Override 
public void onConnected(Bundle bundle) { 
    mLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient); 
    double lat = mLocation.getLatitude(); 
    double lon = mLocation.getLongitude(); 
} 

Ben lat ve lon değişkenlerde şey almıyorum.

Nasıl çözerim?

Answer 1

LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);'un her zaman son nesneyi döndürmesi gerekmez. Son nesneyi bulamazsa, boş döner ve konum alamazsınız. Böyle bir durumda, kullanan konum için istemek için önerilir:

LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, 
       mLocationRequest, this); 

Ayrıca bazı arayüzleri uygulamak ve Google API tarafından konumunu almak yöntemini geçersiz gerekir.

yerini almak için bu adımları takip edin: Her şeyden

İlk,

public class MainActivity extends BaseActivitiy implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, com.google.android.gms.location.LocationListener 

örneklerini

private GoogleApiClient mGoogleApiClient; 
    private Location mLocation; 
    private LocationManager locationManager; 
    private LocationRequest mLocationRequest; 

beyan

compile 'com.google.android.gms:play-services:8.4.0' 

sonra gerekli arayüzleri

uygulamak gradle dosyasında bu koymak

gerekli yöntemleri

@Override 
    public void onConnected(Bundle bundle) { 
     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. 
      return; 
     } 
     mLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient); 
     if(mLocation == null){ 
      startLocationUpdates(); 
     } 
     if (mLocation != null) { 
      double latitude = mLocation.getLatitude(); 
      double longitude = mLocation.getLongitude(); 
     } else { 
      // Toast.makeText(this, "Location not Detected", Toast.LENGTH_SHORT).show(); 
     } 
    } 

    protected void startLocationUpdates() { 
     // Create the location request 
     mLocationRequest = LocationRequest.create() 
       .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY) 
       .setInterval(UPDATE_INTERVAL) 
       .setFastestInterval(FASTEST_INTERVAL); 
     // Request location updates 
     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. 
      return; 
     } 
     LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, 
       mLocationRequest, this); 
     Log.d("reque", "--->>>>"); 
    } 

    @Override 
    public void onConnectionSuspended(int i) { 
     Log.i(TAG, "Connection Suspended"); 
     mGoogleApiClient.connect(); 
    } 

    @Override 
    public void onConnectionFailed(ConnectionResult connectionResult) { 
     Log.i(TAG, "Connection failed. Error: " + connectionResult.getErrorCode()); 
    } 

    @Override 
    public void onStart() { 
     super.onStart(); 
     mGoogleApiClient.connect(); 
    } 

    @Override 
    public void onStop() { 
     super.onStop(); 
     if (mGoogleApiClient.isConnected()) { 
      mGoogleApiClient.disconnect(); 
     } 
    } 
    @Override 
    public void onLocationChanged(Location location) { 

    } 

geçersiz, Sonunda

mGoogleApiClient = new GoogleApiClient.Builder(this) 
       .addConnectionCallbacks(this) 
       .addOnConnectionFailedListener(this) 
       .addApi(LocationServices.API) 
       .build(); 
     locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 

onCreate() bu koymak