protected override void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
_disposed = true;
if (disposing)
{
Device.Info.PropertyChanged -= DeviceInfoPropertyChanged;
if (NavigationPageController != null)
{
var navController = NavigationPageController;
navController.PushRequested -= OnPushed;
navController.PopRequested -= OnPopped;
navController.PopToRootRequested -= OnPoppedToRoot;
navController.InsertPageBeforeRequested -= OnInsertPageBeforeRequested;
navController.RemovePageRequested -= OnRemovePageRequested;
}
if (Current != null)
{
Current.PropertyChanged -= CurrentOnPropertyChanged;
}
FragmentManager fm = FragmentManager;
if (!fm.IsDestroyed)
{
FragmentTransaction trans = fm.BeginTransactionEx();
foreach (Fragment fragment in _fragmentStack)
{
trans.RemoveEx(fragment);
}
trans.CommitAllowingStateLossEx();
fm.ExecutePendingTransactionsEx();
}
_toolbar.RemoveView(_titleView);
_titleView?.Dispose();
_titleView = null;
if (_titleViewRenderer != null)
{
Platform.ClearRenderer(_titleViewRenderer.View);
_titleViewRenderer.Dispose();
_titleViewRenderer = null;
}
_toolbar.RemoveView(_titleIconView);
_titleIconView?.Dispose();
_titleIconView = null;
_imageSource = null;
if (_toolbarTracker != null)
{
_toolbarTracker.CollectionChanged -= ToolbarTrackerOnCollectionChanged;
_toolbar.DisposeMenuItems(_currentToolbarItems, OnToolbarItemPropertyChanged);
_toolbarTracker.Target = null;
_toolbarTracker = null;
}
if (_currentMenuItems != null)
{
_currentMenuItems.Clear();
_currentMenuItems = null;
}
if (_currentToolbarItems != null)
{
_currentToolbarItems.Clear();
_currentToolbarItems = null;
}
if (_toolbar != null)
{
_toolbar.SetNavigationOnClickListener(null);
_toolbar.Menu.Clear();
RemoveView(_toolbar);
_toolbar.Dispose();
_toolbar = null;
}
if (_drawerLayout.IsAlive() && _drawerListener.IsAlive())
{
_drawerLayout.RemoveDrawerListener(_drawerListener);
RemoveView(_drawerLayout);
}
if (_drawerListener != null)
{
_drawerListener.Dispose();
_drawerListener = null;
}
if (_drawerToggle != null)
{
_drawerToggle.ToolbarNavigationClickListener = null;
_drawerToggle.Dispose();
_drawerToggle = null;
}
if (_backgroundDrawable != null)
{
_backgroundDrawable.Dispose();
_backgroundDrawable = null;
}
Current = null;
// We dispose the child renderers after cleaning up everything related to DrawerLayout in case
// one of the children is a MasterDetailPage (which may dispose of the DrawerLayout).
if (Element != null)
{
foreach (Element element in PageController.InternalChildren)
{
var child = element as VisualElement;
if (child == null)
{
continue;
}
IVisualElementRenderer renderer = Platform.GetRenderer(child);
renderer?.Dispose();
}
}
}
base.Dispose(disposing);
}
void RegisterToolbar()
{
Context context = Context;
AToolbar bar = _toolbar;
Element page = Element.RealParent;
_masterDetailPage = null;
while (page != null)
{
if (page is MasterDetailPage)
{
_masterDetailPage = page as MasterDetailPage;
break;
}
page = page.RealParent;
}
if (_masterDetailPage == null)
{
if (PageController.InternalChildren.Count > 0)
{
_masterDetailPage = PageController.InternalChildren[0] as MasterDetailPage;
}
if (_masterDetailPage == null)
{
return;
}
}
if (((IMasterDetailPageController)_masterDetailPage).ShouldShowSplitMode)
{
return;
}
var renderer = Platform.GetRenderer(_masterDetailPage) as MasterDetailPageRenderer;
if (renderer == null)
{
return;
}
_drawerLayout = renderer;
FastRenderers.AutomationPropertiesProvider.GetDrawerAccessibilityResources(context, _masterDetailPage, out int resourceIdOpen, out int resourceIdClose);
if (_drawerToggle != null)
{
_drawerToggle.ToolbarNavigationClickListener = null;
_drawerToggle.Dispose();
}
_drawerToggle = new ActionBarDrawerToggle(context.GetActivity(), _drawerLayout, bar,
resourceIdOpen == 0 ? global::Android.Resource.String.Ok : resourceIdOpen,
resourceIdClose == 0 ? global::Android.Resource.String.Ok : resourceIdClose)
{
ToolbarNavigationClickListener = new ClickListener(Element)
};
if (_drawerListener != null)
{
_drawerLayout.RemoveDrawerListener(_drawerListener);
_drawerListener.Dispose();
}
_drawerListener = new DrawerMultiplexedListener {
Listeners = { _drawerToggle, renderer }
};
_drawerLayout.AddDrawerListener(_drawerListener);
}
protected override void Dispose(bool disposing)
{
if (disposing && !_disposed)
{
_disposed = true;
if (Element != null)
{
PageController.InternalChildren.CollectionChanged -= OnChildrenCollectionChanged;
foreach (Page pageToRemove in Element.Children)
{
TeardownPage(pageToRemove);
}
}
RemoveAllViews();
if (_viewPager != null)
{
_viewPager.ClearOnPageChangeListeners();
_viewPager.Adapter.Dispose();
_viewPager.Dispose();
_viewPager = null;
}
if (_tabLayout != null)
{
_tabLayout.ClearOnTabSelectedListeners();
_tabLayout.Dispose();
_tabLayout = null;
}
if (_bottomNavigationView != null)
{
_bottomNavigationView.SetOnNavigationItemSelectedListener(null);
_bottomNavigationView.Dispose();
_bottomNavigationView = null;
}
if (_relativeLayout != null)
{
_relativeLayout.Dispose();
_relativeLayout = null;
}
if (Element != null)
{
foreach (Page pageToRemove in Element.Children)
{
IVisualElementRenderer pageRenderer = Platform.GetRenderer(pageToRemove);
pageRenderer?.Dispose();
pageToRemove.ClearValue(Platform.RendererProperty);
}
}
_previousPage = null;
}
base.Dispose(disposing);
}