NavigationPage.SetHasNavigationBar bar is broken for TabbedPage(MasterDetailPage too?) on UWP

(6 commenti) (7 reazioni) (0 assegnatari)C# (1926 fork)batch import

e/4 :clock4:help wantedm/high impact :black_large_square:p/UWPt/bug :bug:up-for-grabs

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Descrizione

Description

There was an original issue for MasterDetailPage - it marked as closed however this issue is still persists atleast on TabbedPage (there are report in original issue that it is still broken for MDP too). Since the issue is not reopened yet I've created separate issue. If you have ContentPage (with NavigationPage.SetHasNavigationBar=false) wrapped in Navigation page as child of TabbedPage - navigating to this page causes to show preserved space for NavigationBar (but bar itself is not visible).

Steps to Reproduce

Run attached project.
NavigationBar on the first tab is hidden.
Navigate to the second tab.
Navigate back to the first tab.

Expected Behavior

Navigation bar is not visible, there is no preserved space at the top of the page.

Actual Behavior

Navigation bar is not visible, there is preserved space at the top of the page.

Basic Information

Version with issue: 3.4.0.1008975
IDE: Visual Studio 2017 15.9.0
Platform Target Frameworks:
- UWP: 16299

TabbedPageNavBarIssue.zip

Guida contributor

Direzione di ricerca: Investiga il rendering di TabbedPage su UWP per scoprire perché NavigationPage.SetHasNavigationBar(false) lascia uno spazio vuoto dopo il cambio di scheda. Controlla la logica di aggiornamento del layout nel renderer nativo.
Tech stack: csharp
Dominio: mobile
Tipo issue: Bug
Difficoltà: 3
Tempo stimato: Mezza giornata
Stato attività: Datata
Chiarezza: Chiara
Prerequisiti: GitC#
Adatta ai principianti: 70