I've been trying to put together the examples from https://github.com/MvvmCross/MvvmCross/tree/develop/TestProjects/Playground/Playground.iOS for Tab navigation and https://github.com/MvvmCross/MvvmCross/tree/develop/TestProjects/iOS-Support/XamarinSidebar for Sidebar. I'm able to make them work alone, but not together.
[MvxRootPresentation]
public partial class MainView : MvxTabBarViewController<MainViewModel>
[MvxSidebarPresentation(MvxPanelEnum.Center, MvxPanelHintType.ResetRoot, true, MvxSplitViewBehaviour.Master)]
public partial class MainView : BaseViewController<MainViewModel>
Only show tabs, no sidebars (neither with button neither dragging from the sides).
[MvxRootPresentation]
[MvxSidebarPresentation(MvxPanelEnum.Center, MvxPanelHintType.ResetRoot, true, MvxSplitViewBehaviour.Master)]
public partial class MainView : MvxTabBarViewController<MainViewModel>
Only shows sidebar with black space (Like if a view is missing?). On some devices I've also got an exception about MvxTabBarViewController not being there to attach tabs
[MvxSidebarPresentation(MvxPanelEnum.Center, MvxPanelHintType.ResetRoot, true, MvxSplitViewBehaviour.Master)]
[MvxRootPresentation]
public partial class MainView : MvxTabBarViewController<MainViewModel>
Sidebar Open for Mix 2

Sidebar Closed for Mix 2

Version: 5.0.2
Platform:
This is actually a feature request, I don't think the MvxSidebarPresenter supports this scenario.
I am currently working on a PoC integrating the MvxSidebarPresenter in the MvxIosViewPresenter which might also makes mixing and matching possible. I'll keep you updated.
I have the same problem, I can't use tabs + sidebar, I really need this feature ):
I could do it with the 4.0 version of MvvmCross by using a custom presenter and some custom attributes, do you think I can still do that with the 5.0 version?
with the custom attributes I could also say "I want this view to display on tab 3", so If the current tab was not the requested tab, it was able to change the tab automatically.
for example if you have a "main tab" with a user list and a "chat" tab, when you click on a chat button on the user list, the next view is displayed on the chat tab automatically.
@mvanbeusekom how far did you get with the PoC?
@nunohorta to be honest (maybe should have mentioned this earlier, apologies for that) this topic doesn't have my attention at the moment.
due to changing balance in work and private situation I am not in the situation to actively work and contribute to MvvmCross at this moment.
Most helpful comment
I am currently working on a PoC integrating the MvxSidebarPresenter in the MvxIosViewPresenter which might also makes mixing and matching possible. I'll keep you updated.