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我在我的应用程序中使用 Xamarin Essentials 的地理定位功能作为一直运行的前台服务,我注意到在几个设备上,我有时会得到离它们实际位置很远的位置,看起来像这样(标记的位置远离真实位置):

public async Task Run(CancellationToken token)
    {
        await Task.Run(async () => {
            while (!stopping)
            {
                token.ThrowIfCancellationRequested();
                try
                {
                    await Task.Delay(2000);
                    var request = new GeolocationRequest(GeolocationAccuracy.Best);
                    var location = await Geolocation.GetLocationAsync(request);
                    if (location != null)
                    {
                        var message = new LocationMessage
                        {
                            Latitude = location.Latitude,
                            Longitude = location.Longitude
                        };
                        Device.BeginInvokeOnMainThread(() =>
                        {
                            MessagingCenter.Send<LocationMessage>(message, "Location");
                        });
                    }
                }
                catch (Exception ex)
                {
                    Device.BeginInvokeOnMainThread(() =>
                    {
                        var errormessage = new LocationErrorMessage();
                        MessagingCenter.Send<LocationErrorMessage>(errormessage, "LocationError");
                    });
                }
            }
            return;
        }, token);
    }

结果

4

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