Android应用仅检测位置区域，而不检测城市

Question

我正在尝试使用地址解析器检测用户的位置，但是它仅检测位置的区域而不是城市。还有其他方法可以对用户所在城市进行地理位置定位，因为使用数组和自动填充文本是一个繁琐的过程。

这是我用于定位用户城市的代码

b.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M &&  
checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION)
                    != PackageManager.PERMISSION_GRANTED) {
                requestPermissions(new String[]
{Manifest.permission.ACCESS_COARSE_LOCATION}, 1000);
            } else {
                LocationManager locationManager = (LocationManager) 
getSystemService(Context.LOCATION_SERVICE);
                assert locationManager != null;
                Location location = 
locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                try {
                    assert location != null;
                    String city = hereLocation(location.getLatitude(), 
location.getLongitude());
                    b.setText(city);
                    Toast.makeText(MainActivity.this, "Awesome you're 
in " + city, Toast.LENGTH_LONG).show();
                } catch (Exception e) {
                    e.printStackTrace();
                    Toast.makeText(MainActivity.this, "Please check if 
your GPS is turned on", Toast.LENGTH_SHORT).show();
                }
            }
        }
    });
  }

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {

    switch (requestCode) {
        case 1000: {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                LocationManager 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) {
                    return;
                }
                assert locationManager != null;
                Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                try {
                    assert location != null;
                    String city = hereLocation(location.getLatitude(),location.getLongitude());
                    b.setText(city);
                } catch (Exception e) {
                    e.printStackTrace();
                    Toast.makeText(MainActivity.this,"Please check if your GPS is turned on ",Toast.LENGTH_SHORT).show();
                }
            }
            else {
                Toast t =  Toast.makeText(this,"Permission not Granted",Toast.LENGTH_SHORT);
                t.show();
            }
            break;
        }
    }
}

private String hereLocation(double lat, double lon)
{
    String cityName = "";
    Geocoder geocoder = new Geocoder(this, Locale.getDefault());
    List<Address> addresses;
    try {
        addresses = geocoder.getFromLocation(lat,lon,10);
        if (addresses.size() > 0){
            for(Address adr: addresses){
                if (adr.getLocality() != null && adr.getLocality().length() > 0){
                    cityName = adr.getLocality();
                    break;
                }
            }
        }
    }catch (IOException e){
        e.printStackTrace();
    }
    return cityName;
}

它在我的位置正常工作，但是如果我移到另一个地方，它会改变。