public async Task StartLocationUpdates()
{
if (_isRunning)
{
return;
}
if (await EnsureHasPermissions() is false)
{
_loggingService.Trace("Can't Execute LocationManager.StartLocationUpdates, no permissions");
if (_preferences.Get(UserSettingsKeys.ShowDebugToasts, false) is true)
{
_userDialogs.Toast("Can't start location sharing, no permissions");
}
return;
}
_loggingService.Trace("Executing LocationManager.StartLocationUpdates");
try
{
if (_preferences.Get(UserSettingsKeys.ShowDebugToasts, false) is true)
{
_userDialogs.Toast("Live Location Sharing has started");
}
_isRunning = true;
if (Geolocator.IsListening)
{
await Geolocator.StopListeningAsync();
}
if (Geolocator.IsGeolocationAvailable && Geolocator.IsGeolocationEnabled)
{
Geolocator.DesiredAccuracy = 5;
Geolocator.PositionChanged += Geolocator_PositionChanged;
_forceSendTimer.Elapsed += async(sender, args) =>
{
if (!_isRunning)
{
_forceSendTimer.Stop();
return;
}
// Ensure it updates at least every 60 seconds
if (DateTime.Now - _lastUpdateTime < TimeSpan.FromSeconds(MinimalUpdateTimespan))
{
return;
}
var lastKnownLocation = await Geolocator.GetLastKnownLocationAsync();
if (lastKnownLocation != null)
{
try
{
var position = new Position(lastKnownLocation.Latitude, lastKnownLocation.Longitude);
await UpdateLocation(position);
}
catch (Exception ex)
{
_loggingService.Error(ex, "Error Executing LocationManager._forceSendTimer.Elapsed");
}
}
};
//every 5 second, 5 meters
await Geolocator.StartListeningAsync(TimeSpan.FromSeconds(5), 5);
_forceSendTimer.Start();
}
else
{
Mvx.IoCProvider.Resolve <IUserDialogs>().Alert(
"Please ensure that geolocation is enabled and permissions are allowed for Wasabee to start sharing your location.",
"Geolocation Disabled", "OK");
}
}
catch (Exception ex)
{
_loggingService.Error(ex, "Error Executing LocationManager.StartLocationUpdates");
}
}