public void OnSensorChanged(SensorEvent e)
 {
     try
     {
         if (e.Sensor.Type == SensorType.Proximity)
         {
             if (e.Values[0] >= -SENSOR_SENSITIVITY && e.Values[0] <= SENSOR_SENSITIVITY)
             {
                 //near
                 GlobalContext?.SetOffWakeLock();
             }
             else
             {
                 //far
                 GlobalContext?.SetOnWakeLock();
             }
         }
     }
     catch (Exception exception)
     {
         Console.WriteLine(exception);
     }
 }