xamarin/Xamarin.Forms

[Bug] MasterBehavior.SplitOnLandscape cause Master/menu button didn't display

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#5,937 opened on Apr 17, 2019

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e/2 :clock2:good first issuehelp wantedinactivep/iOS 🍎t/bug :bug:up-for-grabs

Description

Description

When i set MasterBehavior = MasterBehavior.SplitOnLandscape; You might see it is missing the Master/menu button(or the hamburger button)

Steps to Reproduce

  1. create Xamarin.Forms Solution which use Master-Details
  2. add MasterBehavior = MasterBehavior.SplitOnLandscape; in MainPage
  3. run the Solution,and rotate it to landscape 4.click the listview's item to entry details page 5.rotate the device to portrait mode on this page 6.click the back button

Expected Behavior4

it works well

Actual Behavior

the Menu/Master button on the top left couldn't display

Basic Information

  • Version with issue: XF 3.6.0.293080.
  • Last known good version:
  • IDE:
  • Platform Target Frameworks:
    • iOS:
    • Android:
    • UWP:
  • Android Support Library Version:
  • Nuget Packages:
  • Affected Devices:

Screenshots

https://i.stack.imgur.com/UvaTX.gif

Reproduction Link

https://stackoverflow.com/questions/55530606/xamarin-forms-unwanted-behavior-of-master-detail-menu-hamburger-button?noredirect=1#comment97835344_55530606

Contributor guide

Tech stack
csharpandroidios
Domain
mobile
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
C# familiarityXamarin.Forms MasterDetailPagePlatform specific rendering
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Investigate the MasterBehavior.SplitOnLandscape behavior in MasterDetailPage renderers. Check platform specific code in Xamarin.Forms.Platform.Android and Xamarin.Forms.Platform.iOS for hamburger button visibility logic. Review the linked StackOverflow post for additional context. Since Xamarin.Forms has migrated to .NET MAUI, consider if the issue persists in the new framework.