public Task <bool> Start()
{
MvxTrace.TaggedTrace(MvxTraceLevel.Diagnostic, "Geofencing", "Start");
var tcs = new TaskCompletionSource <bool>();
bool result = false;
UIKit.UIApplication.SharedApplication.InvokeOnMainThread(async() =>
{
result = await GeofencingUtil.RequestPermissionAsync();
if (result)
{
GeofencingProvider.UpdateRegionLeft += OnUpdateRegionLeft;
GeofencingProvider.RegionEntered += OnRegionEntered;
GeofencingProvider.InitGeoFencing();
await SetupRegions();
}
tcs.TrySetResult(result);
});
return(tcs.Task);
}
public async Task Stop()
{
MvxTrace.TaggedTrace(MvxTraceLevel.Error, "Geofencing", "Stop");
var result = await GeofencingUtil.RequestPermissionAsync();
if (result)
{
GeofencingProvider.UpdateRegionLeft -= OnUpdateRegionLeft;
GeofencingProvider.RegionEntered -= OnRegionEntered;
GeofencingProvider.SetRegions(new System.Collections.Generic.List <CoreLocation.CLCircularRegion>());
}
}
protected virtual async Task SetupRegions()
{
var location = await GeofencingUtil.GetCurrentLocationAsync();
try
{
MvxTrace.TaggedTrace(MvxTraceLevel.Diagnostic, "Geofencing", "Setup regions");
var response = await AreaService.Instance.LoadAreasByUserLocation(location.Coordinate.Latitude, location.Coordinate.Longitude);
var geofencingRegions = response.Select(area => GeofencingProvider.CreateRegion(area.Latitude, area.Longitude, area.Radius, area.ID))
.ToList();
var updateRegion = GeofencingProvider.CreateUpdateRegion(location.Coordinate.Latitude, location.Coordinate.Longitude, _updateRadius);
GeofencingProvider.SetRegions(geofencingRegions, updateRegion);
}
catch (Exception ex)
{
MvxTrace.TaggedTrace(MvxTraceLevel.Error, "Geofencing", ex.BuildAllMessagesAndStackTrace());
}
}
