sharee.bike-App/Meinkonrad/TINK/View/Bike/ILockItBike.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TINK.Model.Bikes.BikeInfoNS.BluetoothLock;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;

namespace TINK.View.Bike
{
	[XamlCompilation(XamlCompilationOptions.Compile)]
	public partial class ILockItBike : ViewCell
	{
		public ILockItBike()
		{
			InitializeComponent();
		}

		protected override void OnBindingContextChanged()
		{
			base.OnBindingContextChanged();

			if (Device.RuntimePlatform != Device.iOS)
				// Update of size is only required for iOS.
				return;

			var viewModel = BindingContext as TINK.ViewModel.Bikes.Bike.BluetoothLock.BikeViewModel;
			if (viewModel == null)
				return;

			viewModel.PropertyChanged += (sender, e) =>
			{
				if (e.PropertyName == nameof(TINK.ViewModel.Bikes.Bike.BC.RequestHandler.Base<IBikeInfoMutable>.IsButtonVisible)
				|| e.PropertyName == nameof(TINK.ViewModel.Bikes.Bike.BluetoothLock.RequestHandler.Base.IsLockitButtonVisible))
				{
					// Force update of view cell on iOS.
					// https://hausource.visualstudio.com/TINK/_workitems/edit/132
					ForceUpdateSize();
				}
			};
		}
	}
}