Question

应用程序应该获取我当前的位置并在地图上标记，而不是我的项目只是崩溃。这是代码：

public void onMapReady(GoogleMap googleMap) {
    mMap = googleMap;

    if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
            == PackageManager.PERMISSION_GRANTED) {
        mMap.setMyLocationEnabled(true);
    }
   LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    Criteria criteria = new Criteria();
    String provider = locationManager.getBestProvider(criteria, true);
    Location myLocation = locationManager.getLastKnownLocation(provider);
    mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
    double latitude = myLocation.getLatitude();
    double longitude = myLocation.getLongitude();
    LatLng Me = new LatLng(latitude, longitude);
    mMap.moveCamera(CameraUpdateFactory.newLatLng(Me));
    mMap.animateCamera(CameraUpdateFactory.zoomTo(14));
    mMap.addMarker(new MarkerOptions().position(new LatLng(latitude, longitude)).title("You are here!"));

}

任何想法如何修复它，或者这里有什么问题？（它的GoogleMaps项目，所有需要的权限都被授予了btw）

Answer 1

您可以使用LocationManager：

locationManager = (LocationManager)this.getSystemService(LOCATION_SERVICE);
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
    latitude=location.getLatitude();
    longitude=location.getLongitude();
    Log.d("GPS","lat :  "+latitude);
    Log.d("GPS","long :  "+longitude);
}

然后，您只需在this教程中显示地图中的位置即可。

我希望它有所帮助！

获取当前位置android

1 个答案: