public async void RefreshServices()
{
IsBusy = true;
DetectedServices.Clear();
try
{
IList <IService> services = await _microbit.GetServicesAsync();
foreach (IService service in services)
{
IMicrobitServiceProvider microbitServiceProvider =
IdToServiceProviderMappingProvider.ServiceProvider(service);
if (microbitServiceProvider != null)
{
DetectedServices.Add(microbitServiceProvider);
}
}
}
catch (Exception e)
{
await Application.Current.MainPage.DisplayAlert("Exception", e.Message, "Ok");
}
finally
{
IsBusy = false;
}
}
public async void Disconnect()
{
IsBusy = true;
try
{
if (_adapter.ConnectedDevices.Contains(_microbit))
{
await _adapter.DisconnectDeviceAsync(_microbit);
}
}
catch (Exception e)
{
await Application.Current.MainPage.DisplayAlert("Exception", e.Message, "Ok");
}
finally
{
IsBusy = false;
}
DetectedServices.Clear();
}
public DeviceServicesViewModel(IDevice device)
{
_microbit = device;
_bluetoothLe = CrossBluetoothLE.Current;
_adapter = _bluetoothLe.Adapter;
_adapter.DeviceConnected += HandleConnectionStateChanged;
_adapter.DeviceDisconnected += HandleConnectionStateChanged;
_adapter.DeviceConnectionLost += HandleConnectionStateChanged;
ToggleConnectionCommand = new Command(
() =>
{
if (_microbit.State == DeviceState.Connected)
{
Disconnect();
}
else if (_microbit.State == DeviceState.Disconnected)
{
Connect();
}
},
() => !IsBusy);
ServicesCommand = new Command(async() =>
{
DetectedServices.Clear();
IList <IService> services = await _microbit.GetServicesAsync();
foreach (IService service in services)
{
IMicrobitServiceProvider microbitServiceProvider = IdToServiceProviderMappingProvider.ServiceProvider(service);
if (microbitServiceProvider != null)
{
DetectedServices.Add(microbitServiceProvider);
}
}
}, () => !IsBusy
);
DetectedServices = new ObservableCollection <IMicrobitServiceProvider>();
}