如何提高GPS坐标的准确性？

Question

目前，我正在使用 GPS 坐标获取用户地址，如下所示， private void findAddress() {

Geocoder geocoder;
List<Address> addresses;
geocoder=new Geocoder(this, Locale.getDefault());

        try{
            addresses=geocoder.getFromLocation(lattitude,longitude,1);
            String address=addresses.get(0).getAddressLine(0);
            String city=addresses.get(0).getLocality();
            String state=addresses.get(0).getAdminArea();
            String country=addresses.get(0).getCountryName();

            countryEt.setText(country);
            stateEt.setText(state);
            cityEt.setText(city);
            addressEt.setText(address);


        } catch (IOException e) {
            Toast.makeText(this, ""+e.getMessage(), Toast.LENGTH_SHORT).show();
        }

    }

定位权限如下，

 private void detectLocation() {
        Toast.makeText(this, "Please Wait..", Toast.LENGTH_LONG).show();
        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        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;
        }
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);

    }

这段代码完全没问题。但准确率较低。我怎样才能提高我的准确性。要进行哪些修改？如果有人告诉我正确的流程，我很高兴。

Answer 1

如果你在电脑前，我想你在建筑物里，gps 信号不好。尝试到街上去。此外，您可以设置 requestLocationUpdates 监听器并每 1-1.5 秒发出一次定时请求，直到精度低于 50 米或 30 米...最后取消注册监听器。这是一个示例：

@SuppressLint("MissingPermission")
private Task<Void> startMyLocationUpdates(int interval) {
    mFusedLocationClient = LocationServices.getFusedLocationProviderClient(ctx);
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(interval);   //1,5 seconds
mLocationRequest.setFastestInterval(interval);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
return mFusedLocationClient.requestLocationUpdates(mLocationRequest, mLocationCallback, Looper.myLooper());

Answer 2

尝试使用 RAW GNSS 测量值 API 并获取位置。

如何提高GPS坐标的准确性？

How to increase the accuracy of the GPS coordinates?

android

latitude-longitude

android-gps