Unity Android位置服务插件问题

Question

我创建了一个Unity插件来利用Android的位置服务。对于所有意图和目的，它应该是有效的。我订阅了位置更新的监听器，但是LocationListeners的onChangeLocation回调永远不会被触发。最近，我注意到这个打印出来的是logcat中的统一：未知的事件结构（2）。我相信这是LocationManager尝试通知LocationListener位置更改，但显然存在一些问题。我在网上搜索了这个问题的答案，但由于日志文件几乎没有给我信息，我无法找到太多信息。我已经为清单文件添加了权限。下面是监听器的初始化和注册代码。

初始化：

public static void Init(Context context)
{
    if(_looper == null)
    {
        Looper.prepare();
        _looper = Looper.myLooper();
    }
    Log.d("LocationServices", "Initializing Location Services");
    try
    {
        _locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);

        _netProviderIsEnabled = _locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
        _gpsProviderIsEnabled = _locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);

        Log.d("LocationServices", "NetworkProviderEnabled: " + _netProviderIsEnabled);
        Log.d("LocationServices", "GPSProviderEnabled:" + _gpsProviderIsEnabled);

        _netLocationListener = new LocationListener()
        {
            public void onLocationChanged(Location location)
            {
                Log.d("LocationServices", "got a new location");
                makeUseOfNewLocation(location);
            }

            public void onStatusChanged(String provider, int status, Bundle extras) 
            {
                Log.d("LocationServices", "NetStatus: " + status);
                Map<String, String> statusMap = new HashMap<String, String>();

                statusMap.put("Provider", provider);
                statusMap.put("Status", "" + status);

                JSONObject json = new JSONObject(statusMap);

                //UnityPlayer.UnitySendMessage("RunView", "GetProviderStatus", json.toString());
            }

            public void onProviderEnabled(String provider) 
            {
                _netProviderIsEnabled = true;
                _locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, _netLocationListener);
            }

            public void onProviderDisabled(String provider) 
            {
                _netProviderIsEnabled = false;
                _locationManager.removeUpdates(_netLocationListener);
            }
        };

        _gpsLocationListener = new LocationListener()
        {
            public void onLocationChanged(Location location)
            {
                Log.d("LocationServices", "got a new location");
                makeUseOfNewLocation(location);
            }

            public void onStatusChanged(String provider, int status, Bundle extras) 
            {
                Log.d("LocationServices", "GPSStatus: " + status);
                Map<String, String> statusMap = new HashMap<String, String>();

                statusMap.put("Provider", provider);
                statusMap.put("Status", "" + status);

                JSONObject json = new JSONObject(statusMap);

                //UnityPlayer.UnitySendMessage("RunView", "GetProviderStatus", json.toString());
            }

            public void onProviderEnabled(String provider) 
            {
                _gpsProviderIsEnabled = true;
                _locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, _gpsLocationListener);
            }

            public void onProviderDisabled(String provider) 
            {
                _gpsProviderIsEnabled = false;
                _locationManager.removeUpdates(_gpsLocationListener);
            }
        };
    }
    catch(Exception ex)
    {
        Log.d("LocationServices", "Error: " + ex.getMessage());
    }
    _isTracking = false;
}

注册：

public static void StartTracking()
{
    if(_isTracking)
        return;

    Log.d("LocationServices", "Starting Location Services");
    try
    {
        if(_netProviderIsEnabled)
            _locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, _netLocationListener);
        /*else
            UnityPlayer.UnitySendMessage("RunView", "GetNetProviderStatus", "False");*/

        if(_gpsProviderIsEnabled)
            _locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, _gpsLocationListener);
        /*else
            UnityPlayer.UnitySendMessage("RunView", "GetGpsProviderStatus", "False");*/

        _currentLocation = _locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);

        String json = LocationToJson(_currentLocation);
        UnityPlayer.UnitySendMessage("RunView", "GetLocationData", json);
    }
    catch(Exception ex)
    {
        Log.d("LocationServices", "Error: " + ex.getMessage());
    }

    _isTracking = true;
}

如果你知道可能导致这种情况的原因，我们将不胜感激。如果您有任何问题，请告诉我，我会更新帖子。谢谢大家的帮助！