CODEWITHSUNDEEP
xamarinxamarin.forms
Arie
Arie

Reputation: 3573

Push Async is not supported globally on Android, please use a NavigationPage

In App.xaml.cs i have following code:

MainPage = new LoginPage();  //LoginPage is ContentPage

When user click a Button on that page there is call to MasterDetailPage which is of MasterDetailPage type. This will be my real main page from where users will navigate to other pages. I treat it as central place for my application with navigation bar.

Application.Current.MainPage = new MasterDetailPage();

being in MasterDetailPage in ctor i set default page which open:

Detail = new NavigationPage(new ClientsPage());

Now, from here i have a Button to navigate to another ContentPage so when i click a Button this line is executed:

await Application.Current.MainPage.Navigation.PushAsync(new ClientModifyPage(_selectedClient));

Nevertheless i am getting following error:

PushAsync is not supported globally on Android, please use a NavigationPage

What's wrong?

Upvotes: 0

Views: 3102

Answers (3)

Katlego Emmanuel Nkosi
Katlego Emmanuel Nkosi

Reputation: 11

If you've added the Page using Singleton change the Page to transit, as transit creates a new page and would not self-reference the current Page as the Parent page

i.e change AddSingleton to AddTransient for the Page you want to navigate to

builder.Services.AddTransient<ListVehiclePage>();
builder.Services.AddSingleton<ListVehicleViewModel>();

The change must be done on MauiProgram File

public static class MauiProgram

Upvotes: 0

Priyanka
Priyanka

Reputation: 158

place below the line in app.cs page

MainPage = new NavigationPage(new LoginPage());

instead of

MainPage = new LoginPage();

And no need to use NavigationPage in other pages.NavigationPage should be used when we are redirecting the page first time in our application. Here MainPage is the root page. We have to assign a page(LoginPage) to MainPage by using NavigationPage.

Upvotes: 2

Lucas Zhang
Lucas Zhang

Reputation: 18861

await Application.Current.MainPage.Navigation.PushAsync(new ClientModifyPage(_selectedClient));

As SushiHangover said , it will be an expected result because Application.Current.MainPage is a MasterDetailPage , which is not in a NavigationPage .

You should call the method PushAsync in the detail page .

 await((MasterDetailPage)App.Current.MainPage).Detail.Navigation.PushAsync(new ClientModifyPage(_selectedClient));

Upvotes: 2

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