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);
}