protected override void OnCreate(Bundle savedInstanceState) { base.OnCreate(savedInstanceState); SetContentView(Resource.Layout.TimerLayout); FindViews(); HandleEvents(); TimerData.ResetTimer(); TimerData.CalculateTime(); UpdateClock(); secondsElapsedTextView.SetBackgroundColor(Android.Graphics.Color.ForestGreen); TimerData._timer = new System.Timers.Timer(); TimerData._timer.Interval = 1000; TimerData._timer.Elapsed += TimerData.Tick; TimerData._timer.Elapsed += UpdateClock; TimerData._timer.Elapsed += CheckOnRest; sensorManager = (SensorManager)GetSystemService(Context.SensorService); }