如何在 Xamarin mvvmcross 项目中为 IOS 修复 MvxTabViewController 内的导航？

Question

在我的应用程序中，我有 LoginView，然后是 MainView，它是带有两个选项卡的 MvxTabBarViewController。这是我的 MainView 代码：

   public class MainView : MvxTabBarViewController<MainViewModel>
    {
        private bool _constructed;
        public MainView()
        {
            _constructed = true;

            // need this additional call to ViewDidLoad because UIkit creates the view before the C# hierarchy has been constructed
            ViewDidLoad();
        }

        public override void ViewDidLoad()
        {
            if (!_constructed)
                return;

            base.ViewDidLoad();



            Title = "SampleTabs";
            View.BackgroundColor = UIColor.Red;

            var viewControllers = new List<UIViewController>();
            viewControllers.Add(CreateTabFor("Second", ViewModel.TabEvents, 0));
            viewControllers.Add(CreateTabFor("First", ViewModel.TabDashboard, 1));


            ViewControllers = viewControllers.ToArray();
            CustomizableViewControllers = new UIViewController[] { };


         //   SelectedViewController = ViewControllers[1];
        }

        private UIViewController CreateTabFor(string title, IMvxViewModel viewModel, int index)
        {

            var controller = new UINavigationController();

            var screen = this.CreateViewControllerFor(viewModel) as UIViewController;
            screen.Title = title;




            // screen.TabBarItem = new UITabBarItem(title, null, index);



            screen.TabBarItem = new UITabBarItem(UITabBarSystemItem.Search, index);


          controller.PushViewController(screen, false);  
           controller.NavigationBarHidden = true;

            return controller;
        }
    }

问题出在标签项上，我无法在显示初始标签后将其更改为第二个。选项卡很简单，只有背景颜色发生变化。欢迎任何帮助。

Answer 1

已修复！问题出在核心而不是标签视图。

如何在 Xamarin mvvmcross 项目中为 IOS 修复 MvxTabViewController 内的导航？

How to fix navigation inside MvxTabViewController for IOS in Xamarin mvvmcross project?

c#

tabbarcontroller

navigationcontroller

ios

mvvmcross