Java Can'；无法使用LocationManager获取坐标

我正在开发一个使用Google Maps V2 API的应用程序，但我在获取坐标并将其放入LatLng对象时遇到了麻烦。。。这是我的密码：

 public class TelaMapa extends android.support.v4.app.FragmentActivity 
                  implements OnMapClickListener, OnCameraChangeListener{

// Google Map
protected GoogleMap googleMap;
private SupportMapFragment mapFragment;
protected AndroidLocationSource locationSource;

@Override
protected void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    setContentView(R.layout.activity_mapa);
}

@Override
protected void onResume(){
    super.onResume();
    configureMap();
}


/**
 * function to load map. If map is not created it will create it for you
 * */
private void configureMap() {
    if (googleMap == null) {
        mapFragment = (SupportMapFragment) getSupportFragmentManager()
                    .findFragmentById(R.id.map);

        googleMap = mapFragment.getMap();

        googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
        googleMap.setMyLocationEnabled(true);

        LocationManager LM = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
        String bestProvider = LM.getBestProvider(new Criteria(),true);

        Location localAtu;

        /*Location myLocation = LM.getLastKnownLocation(bestProvider);

        double lat= myLocation.getLatitude();
        double lng = myLocation.getLongitude();
        LatLng latLng = new LatLng(lat, lng);

        googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(latLng, 20));*/


        if(bestProvider != null){
            localAtu = LM.getLastKnownLocation(bestProvider);
        } else {
            localAtu = LM.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        }

        LatLng latLng;

        if(localAtu != null){
            latLng = new LatLng(localAtu.getLatitude(), localAtu.getLongitude());

            final CameraPosition position = new CameraPosition.Builder()
                                                              .target(latLng)
                                                              .bearing(0)
                                                              .tilt(0)
                                                              .zoom(17)
                                                              .build();

            CameraUpdate update = CameraUpdateFactory.newCameraPosition(position);
            googleMap.moveCamera(update);

            adicionarMarcador(googleMap, latLng);
            locationSource = new AndroidLocationSource();
            googleMap.setLocationSource(locationSource);
            locationSource.setLocation(latLng);
        } else {
            Toast.makeText(getApplicationContext(),
                           "GPS desligado ou indisponível!", Toast.LENGTH_LONG)
                           .show();
        }


        // check if map is created successfully or not
        if (googleMap == null) {
            Toast.makeText(getApplicationContext(),
                    "Desculpe! Não foi possível criar o mapa!", Toast.LENGTH_SHORT)
                    .show();
        }

   }
}

就是这样，我把它安装在我的摩托罗拉Atrix上，它总是在else里向我展示烤面包片

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块谢谢你的阅读

Sanket Kachhela回答！ 只要使用本教程，它就会很好地工作！

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androidhive.info/2012/07/android gps位置管理器教程

您可以使用它将代码示例缩小到产生问题的最小值，并指定您实际看到的问题是什么？很难从你的帖子中看出你真正的问题是什么。谢谢问题是最好的提供程序为Null，而localAtu也为Null。。。所以，toast消息总是显示在Hanks Sanket中，我将在教程中尝试该代码，它可能会起作用。。。如果没有，问题是我的手机代码对我有效，谢谢Sanket！