Bug 48517

Summary: OnAppearing strange behavior when my application is resumed by Android OS
Product: Forms Reporter: Dmitry <bellju>
Component: FormsAssignee: Bugzilla <bugzilla>
Status: RESOLVED DUPLICATE    
Severity: normal CC: adrianknight89, jas, sahou
Priority: ---    
Version: 2.3.3   
Target Milestone: ---   
Hardware: PC   
OS: Windows   
Tags: Is this bug a regression?: ---
Last known good build:

Description Dmitry 2016-12-01 12:30:59 UTC
I've got a strange behavior when application is resumed by Android OS, it could be a bug or some Forms' feature.

I'm using 2.3.3 XF with Android 15 SDK.

This is my navigation stack:

= First page
== Second page
=== Third page
==== Fourth page

All these pages have their OnAppearing overridden.

I switch pages with Navigation.PushAsync.

I'm on Fourth page and my application becomes hidden (OnPause method in Droid's MainActivity is calling), but when I return to my application (OnResume method in Droid's MainActivity is calling) the following happens:

1. First page's OnAppearing is being called.
2. Second page's OnAppearing is being called.
3. Third page's OnAppearing is being called.
4. Fourth page's OnAppearing is being called.

All these pages get their OnAppearing called, the same time I'm on the Fourth page and assume only its OnAppearing should be called. Then I go back (with pressing Back button) to the Third page and its OnAppearing is not being called.

This happens only when my application is resumed by Android OS, otherwise OnAppearing at every page calls fine.

Is it OK? Can anyone explain this?
Comment 1 adrianknight89 2016-12-01 15:25:58 UTC
I believe this was fixed in 2.3.4-pre1.
Comment 2 Samantha Houts [MSFT] 2016-12-01 19:33:41 UTC

*** This bug has been marked as a duplicate of bug 41322 ***