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);
}