public void OnDisappearing()
{
if (Characteristic.CanUpdate)
{
Characteristic.StopUpdates();
}
}
private Task <byte[]> GetCharacteristicValue(
ICharacteristic characteristic)
{
var taskCompletionSource = new TaskCompletionSource <byte[]>();
EventHandler <CharacteristicReadEventArgs> handler = null;
handler = (sender, args) =>
{
Platform.Current.RunOnMainThread(() =>
{
characteristic.ValueUpdated -= handler;
characteristic.StopUpdates();
if (!taskCompletionSource.Task.IsCompleted)
{
taskCompletionSource.SetResult(
args.Characteristic.Value);
}
});
};
characteristic.ValueUpdated += handler;
characteristic.StartUpdates();
return(taskCompletionSource.Task);
}
protected override void OnDisappearing()
{
base.OnDisappearing();
if (characteristic.CanUpdate)
{
characteristic.StopUpdates();
}
}
protected override void OnDisappearing()
{
base.OnDisappearing();
if (characteristic.CanUpdate)
{
characteristic.StopUpdates();
characteristic.ValueUpdated -= valueUpdatedHandler;
}
}
private async Task _disconnect()
{
try
{
_characteristicHR.ValueUpdated -= CharacteristicHR_ValueUpdated;
_characteristicHR.StopUpdates();
await _adapter.DisconnectDeviceAsync(_device);
_connectionRetry = 0;
_device = null;
_serviceHR = null;
_serviceBattery = null;
_characteristicHR = null;
_characteristicBatteryLevel = null;
_currentValue = null;
_log("_disconnect", "disconnected");
}
catch (Exception e)
{
_log("_disconnect", e.Message);
}
}
public void StopUpdates() => _characteristic.StopUpdates();