public override AView OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (_shellContent != null) { _page = ((IShellContentController)_shellContent).GetOrCreateContent(); } _root = inflater.Inflate(Controls.Resource.Layout.shellcontent, null).JavaCast <CoordinatorLayout>(); var shellContentMauiContext = MauiContext.MakeScoped(layoutInflater: inflater, fragmentManager: ChildFragmentManager); Maui.IElement parentElement = (_shellContent as Maui.IElement) ?? _page; var shellToolbar = new Toolbar(parentElement); ShellToolbarTracker.ApplyToolbarChanges(_shellContext.Shell.Toolbar, shellToolbar); _toolbar = (AToolbar)shellToolbar.ToPlatform(shellContentMauiContext); var appBar = _root.FindViewById <AppBarLayout>(Resource.Id.shellcontent_appbar); appBar.AddView(_toolbar); _viewhandler = _page.ToHandler(shellContentMauiContext); _shellPageContainer = new ShellPageContainer(Context, _viewhandler); if (_root is ViewGroup vg) { vg.AddView(_shellPageContainer); } _toolbarTracker = _shellContext.CreateTrackerForToolbar(_toolbar); _toolbarTracker.SetToolbar(shellToolbar); _toolbarTracker.Page = _page; // this is probably not the most ideal way to do that _toolbarTracker.CanNavigateBack = _shellContent == null; _appearanceTracker = _shellContext.CreateToolbarAppearanceTracker(); ((IShellController)_shellContext.Shell).AddAppearanceObserver(this, _page); if (_shellPageContainer.LayoutParameters is CoordinatorLayout.LayoutParams layoutParams) { layoutParams.Behavior = new AppBarLayout.ScrollingViewBehavior(); } return(_root); }
public override AView OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { var shellSection = ShellSection; if (shellSection == null) { return(null); } if (shellSection.CurrentItem == null) { throw new InvalidOperationException($"Content not found for active {shellSection}. Title: {shellSection.Title}. Route: {shellSection.Route}."); } var context = Context; var root = PlatformInterop.CreateShellCoordinatorLayout(context); var appbar = PlatformInterop.CreateShellAppBar(context, Resource.Attribute.appBarLayoutStyle, root); int actionBarHeight = context.GetActionBarHeight(); var shellToolbar = new Toolbar(shellSection); ShellToolbarTracker.ApplyToolbarChanges(_shellContext.Shell.Toolbar, shellToolbar); _toolbar = (AToolbar)shellToolbar.ToPlatform(_shellContext.Shell.FindMauiContext()); appbar.AddView(_toolbar); _tablayout = PlatformInterop.CreateShellTabLayout(context, appbar, actionBarHeight); var pagerContext = MauiContext.MakeScoped(layoutInflater: inflater, fragmentManager: ChildFragmentManager); var adapter = new ShellFragmentStateAdapter(shellSection, ChildFragmentManager, pagerContext); var pageChangedCallback = new ViewPagerPageChanged(this); _viewPager = PlatformInterop.CreateShellViewPager(context, root, _tablayout, this, adapter, pageChangedCallback); Page currentPage = null; int currentIndex = -1; var currentItem = shellSection.CurrentItem; var items = SectionController.GetItems(); while (currentIndex < 0 && items.Count > 0 && shellSection.CurrentItem != null) { currentItem = shellSection.CurrentItem; currentPage = ((IShellContentController)shellSection.CurrentItem).GetOrCreateContent(); // current item hasn't changed if (currentItem == shellSection.CurrentItem) { currentIndex = items.IndexOf(currentItem); } } _toolbarTracker = _shellContext.CreateTrackerForToolbar(_toolbar); _toolbarTracker.SetToolbar(shellToolbar); _toolbarTracker.Page = currentPage; _viewPager.CurrentItem = currentIndex; if (items.Count == 1) { UpdateTablayoutVisibility(); } _tablayout.LayoutChange += OnTabLayoutChange; _tabLayoutAppearanceTracker = _shellContext.CreateTabLayoutAppearanceTracker(ShellSection); _toolbarAppearanceTracker = _shellContext.CreateToolbarAppearanceTracker(); HookEvents(); return(_rootView = root); }