安卓谷歌地圖得到正確的位置不工作

Question

我嘗試編寫示例代碼來測試我的應用程序中的Google地圖API。一切看起來不錯，但是當我從我的應用程序打開Goog​​le地圖時，它停止工作。

請給我一些幫助。

public class SmarttreenearbyActivity extends FragmentActivity implements OnMapReadyCallback { 

private GoogleMap mMap; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_smarttreenearby); 
    // Obtain the SupportMapFragment and get notified when the map is ready to be used. 
    SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager() 
      .findFragmentById(R.id.map); 
    mapFragment.getMapAsync(this); 
} 

@Override 
public void onMapReady(GoogleMap googleMap) { 
    mMap = googleMap; 
    mMap.setMyLocationEnabled(true); 

    // Add a marker in Sydney and move the camera 
    LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 
    Criteria criteria = new Criteria(); 
    String provider = locationManager.getBestProvider(criteria, true); 
    Location location = locationManager.getLastKnownLocation(provider); 
    double y = location.getLatitude(); 
    double x = location.getLongitude(); 
    LatLng sydney = new LatLng(x,y); 

    mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney")); 
    mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney)); 
} 

}

Answer 1

嘗試使用FusedLocationApi。這是一個官方的Google API，它允許我們在不創建自己複雜的位置邏輯的情況下獲取位置。