How to disable the swipe back in iOS using .net maui?

Question

I’ve seen solutions for Xamarin.Forms but in need of .Net Maui

Answer 1

Hello @Tumi Tladi ,

You mean the swipe to go back to previous view gesture in the navigation, right? If so, you can refer to the example below:

With NavigationPage

Set a NavigationPage as MainPage in App

MainPage = new NavigationPage(new MainPage());  

Push to NextPage in MainPage

Navigation.PushAsync(new NextPage());  

Disable he swipe back gesture in NextPage

  protected override void OnAppearing()  
    {  
        base.OnAppearing();  
#if IOS  
        UINavigationController vc = (UINavigationController)Platform.GetCurrentUIViewController();//using UIKit, find the UINavigationController  
        vc.InteractivePopGestureRecognizer.Enabled = false;  
#endif  
    }  

---Update---

With Shell
You can overwrite the CreateShellSectionRenderer method in ShellRenderer, and set InteractivePopGestureRecognizer.Enabled = false; for the ShellSectionRenderer. Because the InteractivePopGestureRecognizer.Delegate has been set in the source code of ShellSectionRenderer, please see the source code here.
And you can use customrenderer with MAUI, see .NET MAUI control customization with handlers - .NET MAUI | Microsoft Learn and Porting Custom Renderers to Handlers in Wiki and refer to the following code:

In MauiProgram

 

          builder.UseMauiApp<App>().ConfigureMauiHandlers((handlers)=>{  
#if IOS  
               handlers.AddHandler(typeof(Shell), typeof(CustomShellRenderer));  
#endif  
        });  

CustomShellRenderer should be under Platform/iOS folder

public class CustomShellRenderer: ShellRenderer  
    {  
        public CustomShellRenderer()  
        {  
  
        }  
    protected override IShellSectionRenderer CreateShellSectionRenderer(ShellSection shellSection)  
    {  
        return new CustomSectionRenderer(this);  
    }  
}  

public class CustomSectionRenderer : ShellSectionRenderer  
{  
    public CustomSectionRenderer(IShellContext context) : base(context)  
    {  
         
    }  
    public override void ViewDidLoad()  
    {  
        base.ViewDidLoad();  
        InteractivePopGestureRecognizer.Enabled = false;  
    }  
}  

Best Regards,
Wenyan Zhang

---

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Answer 2

With Shell Navigation system, this is the Crash..

Specified cast is not valid.

at iOS_SwipeBack.NextPage.OnAppearing() in /Users/tumitladi/Projects/iOS_SwipeBack/iOS_SwipeBack/NextPage.xaml.cs:line 17
at Microsoft.Maui.Controls.Page.SendAppearing()
at Microsoft.Maui.Controls.ShellSection.PresentedPageAppearing()
at Microsoft.Maui.Controls.ShellSection.<PresentedPageAppearing>g__OnPresentedPageParentSet|94_0(Object sender, EventArgs e)
at Microsoft.Maui.Controls.Element.OnParentSet()
at Microsoft.Maui.Controls.NavigableElement.OnParentSet()
at Microsoft.Maui.Controls.Page.OnParentSet()
at Microsoft.Maui.Controls.Element.set_Parent(Element value)
at Microsoft.Maui.Controls.BaseShellItem.AddLogicalChild(Element element)
at Microsoft.Maui.Controls.ShellSection.AddPage(Page page)
at Microsoft.Maui.Controls.ShellSection.OnPushAsync(Page page, Boolean animated)
at Microsoft.Maui.Controls.ShellSection.PushStackOfPages(List1 pages, Nullable1 animate)
at Microsoft.Maui.Controls.ShellSection.GoToAsync(ShellNavigationRequest request, ShellRouteParameters queryData, IServiceProvider services, Nullable`1 animate, Boolean isRelativePopping)
at Microsoft.Maui.Controls.ShellNavigationManager.GoToAsync(ShellNavigationParameters shellNavigationParameters, ShellNavigationRequest navigationRequest)
at iOS_SwipeBack.MainPage.OnCounterClicked(Object sender, EventArgs e) in /Users/tumitladi/Projects/iOS_SwipeBack/iOS_SwipeBack/MainPage.xaml.cs:line 16
at ObjCRuntime.Runtime.ThrowException(IntPtr gchandle)
at UIKit.UIApplication.UIApplicationMain(Int32 argc, String[] argv, IntPtr principalClassName, IntPtr delegateClassName)
at UIKit.UIApplication.Main(String[] args, Type principalClass, Type delegateClass)
at iOS_SwipeBack.Program.Main(String[] args) in /Users/tumitladi/Projects/iOS_SwipeBack/iOS_SwipeBack/Platforms/iOS/Program.cs:line 13