Question

我尝试了很多来源，但我没有得到我的片段应该用于获取当前位置的内容。这是我的片段：

 public class GMapFragment extends Fragment implements OnMapReadyCallback {
    private GoogleMap googleMap;
    MapFragment fragment;


        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {

            View rootView = inflater.inflate(R.layout.fragment_gmap, container, false);
            initilizeMap();
            return rootView;
        }
         private void initilizeMap()
        {
            MapFragment fragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
               if (fragment != null){
                   fragment.getMapAsync(this);

               }

        }
        @Override
        public void onMapReady(final GoogleMap googleMap) {
            googleMap.setMyLocationEnabled(true);
            googleMap.getUiSettings().setZoomControlsEnabled(true);

        }

         @Override
        public void onPause() {

            final FragmentManager fragManager = this.getFragmentManager();
            final Fragment fragment = fragManager.findFragmentById(R.id.map);
            if(fragment!=null){
                fragManager.beginTransaction().remove(fragment).commit();
            super.onPause();

            }
        }
        @Override
        public void onDestroy() {
            super.onDestroy();
            final FragmentManager fragManager = this.getFragmentManager();
            final Fragment fragment = fragManager.findFragmentById(R.id.map);
            if(fragment!=null){
                fragManager.beginTransaction().remove(fragment).commit();
            }
        }
        }

如果有人可以提供帮助？我需要一个可以与此片段一起使用的源或样本。请帮忙，我在这里呆了几天

Answer 1

您的清单文件中是否有ACCESS_FINE_LOCATION？

此外，请注意，如果您的应用在＆gt; = API 23设备上运行，则必须向用户请求权限授予。

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编辑：

您是否初步确定了Google Play服务？

Answer 2

来自文档

启用后，位置可用

您有可用的位置吗？

Answer 3

SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
GoogleApiClient mGoogleApiClient = new GoogleApiClient.Builder(getActivity()).addConnectionCallbacks(this).addOnConnectionFailedListener(this).addApi(LocationServices.API).build();

在onStart上连接上述google api客户端，并在onstop

中断开连接

@Override
    public void onStart() {
        super.onStart();
        if (mGoogleApiClient != null)
            mGoogleApiClient.connect();
    }

覆盖方法。

public void onConnected(@Nullable Bundle bundle) {

        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.LOLLIPOP) {
            if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
                    && ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                return;
            }
        }
        myLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
        if (myLocation != null) {
            showCurrentLocation(myLocation);
            return;
        }
        if (!NetworkHelper.isGpsEnabled(getActivity()))
            PopUp.showAlertDialog(act, "Enable GPS",
                    "Help us to get your current location");
        LocationServices.FusedLocationApi.requestLocationUpdates(
                mGoogleApiClient, locationRequest, new LocationListener() {
                    @Override
                    public void onLocationChanged(Location location) {
                        if (location == null)
                            return;
                        myLocation = location;
                        showCurrentLocation(location);
                    }
                });


    }

片段中的当前位置

3 个答案:

编辑：