Physical back button in Xamarin Forms

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I need to be clicked on the Back button of the Smartphone to be returned to the previous page.

Note: If possible do not use Navigation to not have the bar up there.

xamarin xamarin-forms xamarin.android

  • In my app when I click to return it closes the application leaving it in the background. I searched in my project 'Onbackbuttonpressed' and nowhere is it being used.

  • Damn life, I tested here and found out the following, if I use the Navigation.PushAsync(new Page1()); Physical back really works, but I’m using by default the App.Current.MainPage = new Login();, how can I proceed without having to join Navigation?

  • Very grateful for the instruction @Diego

  • 1

    @Diego, how about I ask you to answer my question so I can give you a like? I believe that within this community is important, I can’t do that in a comment.

1 answer

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Back a page by clicking the button ← is already the native behavior of Xamarin when you are navigating between pages, unless you have overwritten the Onbackbuttonpressed event for some reason and are returning true in that method.

To enable this behavior you must use a navigation stack (controls provided in the interface INavigation and implemented by NavigationPage). You are probably not creating this stack properly.

When the page that is on display is already the root page of the stack (or the MainPage application), the back button really takes the app to the background.

If your problem with the NavigationPage for only the top bar, you can disable its display:

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="App.Views.MyPage"
             NavigationPage.HasNavigationBar="False"> 
</ContentPage>

Or in the code c# of the page:

NavigationPage.SetHasNavigationBar(this, false);
  • 1

    Thanks, great tips, I didn’t know it was possible to disable the Navigationpage bar.

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