Custom Commands

[Dennis]

Hi everybody. I'm using this controller's commands option. I'm following the guides and it works, however, whenever I try to navigate to another page, I get this error: "PushAsync is not supported globally on iOS, please use a NavigationPage.".

I tried moving my code from the ViewModel to the Content page where I invoque the view model. The tree lodes the data just fine, but now it won't recognize the tap action.

async void OnItemTap(object p)
        {
            var context = (TreeViewItemCommandContext)p;
            var item = context.Item as ItemsArbol;
            await Application.Current.MainPage.DisplayAlert("", "You clicked on: " + (context.Item as ItemsArbol).Nombre, "OK");

            if (!Equals(item.Tipo, "0"))
            {
                idOrgMod = item.Id;
                idOrgModPadre = item.Padre;
                Application.Current.Properties["idOrgMod"] = idOrgMod;
                Application.Current.Properties["idOrgModPadre"] = idOrgModPadre;
                await Application.Current.SavePropertiesAsync();
                await Navigation.PushAsync(new OrganizacionesDetalle());

            }
        }

How can I make the content view recognize the ItemTap action? In case this isn't possible, how can I make the viewmodel display the new page when I tap the tree's item?

 

Thanks in advance for your help.

 

 

[Dennis]

I got it to work now, setting my main page as a navigation page.

[Didi]

Hi Dennis,

I am glad to hear that you have solved the issue with the navigation. 

Also for more details regarding the complex navigation when the MVVM pattern is used in the apps, you could take a look at the following article in Xamatin.Forms documentation: Enterprise App Navigation.

Let me know if you have any additional questions or concerns.

Regards,
Didi
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