Bug 32829 - Changing MasterBehavior on DetailPage has no effect
Summary: Changing MasterBehavior on DetailPage has no effect
Alias: None
Product: Forms
Classification: Xamarin
Component: Android ()
Version: 1.4.4
Hardware: PC Windows
: Low enhancement
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2015-08-06 11:02 UTC by Joseph Redfern
Modified: 2017-07-31 01:27 UTC (History)
3 users (show)

Tags: AC masterdetailpage
Is this bug a regression?: ---
Last known good build:

Demo of the described bug (20.10 KB, application/x-zip-compressed)
2015-08-06 11:02 UTC, Joseph Redfern

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Description Joseph Redfern 2015-08-06 11:02:40 UTC
Created attachment 12384 [details]
Demo of the described bug

Programmatically changing the MasterBehavior property of a MasterDetail page under Android has no effect.

See attached project for a demo - I'm expecting the "Change split behavior" button to toggle between the Split and Popover behaviors.
Comment 1 Joseph Redfern 2015-09-03 08:20:00 UTC
I don't really see how this is an enhancement rather than a bug...
Comment 2 Nicholas Bauer 2017-07-31 01:27:39 UTC
Just took a peek at the MasterDetailPage code for handling a change in MasterBehavior. Literally all it does is enable and disable the ability to change IsPresented:

internal static void UpdateMasterBehavior(MasterDetailPage page)
    if (page.ShouldShowSplitMode)
        page.SetValueCore(IsPresentedProperty, true);
        if (page.MasterBehavior != MasterBehavior.Default)
            page.CanChangeIsPresented = false;