Crash during navigation with Navigation page

[thaveeshakannangara]

Description

Once reassigning a NavigationPage to Application.Current.MainPage application will crash. This bug is unique to android, I have tested it targetting Windows platform and it works fine. (was not able to test iOS)

Please note i have test the same on Xamarin Forms also, and it works fine in both android, Windows platforms. (was not able to test iOS)

Can reproduce the Issue from this repo -> repo

Tested Environment :

Microsoft Visual Studio Community 2022 (64-bit) - Preview
Version 17.2.0 Preview 1.0

Attached a Screenshot from the issue rasied :

Steps to Reproduce

1. Create 3 ContentPages (ex: LoginPage , OTPView, HomeView)
2. Set the NavigationPage to MainPage in the App.cs class (ex: MainPage = new NavigationPage(new LoginPage()); )
3. Add a Button in the LoginPage and on the click handler do a Navigation.PushAsync (ex: Application.Current.MainPage.Navigation.PushAsync(new OTPView());)
4. Add a Button in the OTPView and on the click handler reassign the NavigationPage to Application.Current.MainPage (ex: Application.Current.MainPage = new NavigationPage(new HomeView()); ) (Lets Assume after OTP validate setting the HomeView as the RootPage)
5. Run the application targeting android and the application crashes.

Version with bug

Unknown/Other (please specify)

Last version that worked well

Unknown/Other

Affected platforms

Android, I was not able test on other platforms

Affected platform versions

Android 10 - API 29

Did you find any workaround?

Relevant log output

[ForceDarkHelper] updateByCheckExcludeList: pkg: com.companyname.mauiapp6 activity: crc643b7a81c453cc1630.MainActivity@339eb55
[chatty] uid=10262(com.companyname.mauiapp6) identical 2 lines
[ForceDarkHelper] updateByCheckExcludeList: pkg: com.companyname.mauiapp6 activity: crc643b7a81c453cc1630.MainActivity@339eb55
**Java.Lang.IllegalStateException:** 'Loading...'

[nyname.mauiapp] java_vm_ext.cc:570] JNI DETECTED ERROR IN APPLICATION: JNI CallObjectMethodA called with pending exception java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
[nyname.mauiapp] java_vm_ext.cc:570] (Throwable with no stack trace)
[nyname.mauiapp] java_vm_ext.cc:570]
[nyname.mauiapp] java_vm_ext.cc:570]     in call to CallObjectMethodA
[nyname.mauiapp] java_vm_ext.cc:570]     from void crc64fcf28c0e24b4cc31.ButtonHandler_ButtonClickListener.n_onClick(android.view.View)
**Java.Lang.IllegalStateException:** 'Loading...'

[J-Swift]

I ran into this as well and found that it seems to be an issue when going from a NavigationPage as MainPage to another NavigationPage as MainPage. When I set my initial MainPage to a ContentPage, I was able to set to a NavigationPage afterwards.

[J-Swift]

(I'm on p13)

[Amir-Care]

Verified repro with Version 17.2.0 Preview 2.0 [32208.484.main] on Android.
Sample project: #5168.zip

[J-Swift]

I think this is probably a duplicate of #4311