private void MoveTo(int nextValue)
{
var currentIndex = ItemSource.ToList().IndexOf(WorkingItem);
var newIndex = currentIndex + nextValue;
if (newIndex < 0 || newIndex >= ItemSource.Count())
{
return;
}
WorkingItem = ItemSource.ElementAt(newIndex);
OnPropertyChanged(nameof(WorkingItem));
}
protected override UIViewController GetViewControllerAtIndex(int index)
{
if (index < 0 || index >= ItemSource.Count())
{
return(null);
}
// Here, you can choose to use the built-in CreateViewController()
// or instanciate your own view controllers
var parameters = new { index = index, title = ItemSource.ElementAt(index) as string };
// If your controller is a IMvxPageViewController, you can also pass the index, and then PageIndex will be set automatically
// For VM with CreateViewController() the controller will be constructed late, there is no way to set it directly excepted passing it as Init() parameter
// For instance:
// var vm = Mvx.IocConstruct<OnePageViewModel>();
// vm.Init(index, ItemSource.ElementAt(index) as string);
// var viewController = (PageView as IMvxIosView).CreateViewControllerFor(vm) as UIViewController;
var viewController = this.CreateViewController <OnePageViewModel>(parameters);
return(viewController);
}
protected override UIViewController GetViewControllerAtIndex(int index)
{
if (ItemSource == null || ItemSource.Count() == 0)
{
return(null);
}
UIViewController viewController;
if (!_cachedVC.TryGetValue(index, out viewController))
{
var viewModel = ItemSource.ElementAt(index) as IMvxViewModel;
viewModel.Initialize();
viewController = (PageView as IMvxIosView)?.CreateViewControllerFor(viewModel) as UIViewController;
_cachedVC[index] = viewController;
}
return(viewController);
}