void UpdateFlyoutLayoutBehavior(CGSize newBounds)
{
FlyoutPage flyoutDetailPage = _flyoutPage ?? Element as FlyoutPage;
if (flyoutDetailPage == null)
{
return;
}
bool isPortrait = newBounds.Height > newBounds.Width;
var previous = PreferredDisplayMode;
switch (flyoutDetailPage.FlyoutLayoutBehavior)
{
#pragma warning disable CA1416 // TODO: UISplitViewControllerDisplayMode.AllVisible, PrimaryHidden is unsupported on: 'ios' 14.0 and late
case FlyoutLayoutBehavior.Split:
PreferredDisplayMode = UISplitViewControllerDisplayMode.AllVisible;
break;
case FlyoutLayoutBehavior.Popover:
PreferredDisplayMode = UISplitViewControllerDisplayMode.PrimaryHidden;
break;
case FlyoutLayoutBehavior.SplitOnPortrait:
PreferredDisplayMode = (isPortrait) ? UISplitViewControllerDisplayMode.AllVisible : UISplitViewControllerDisplayMode.PrimaryHidden;
break;
case FlyoutLayoutBehavior.SplitOnLandscape:
PreferredDisplayMode = (!isPortrait) ? UISplitViewControllerDisplayMode.AllVisible : UISplitViewControllerDisplayMode.PrimaryHidden;
break;
#pragma warning restore CA1416
default:
PreferredDisplayMode = UISplitViewControllerDisplayMode.Automatic;
break;
}
if (previous == PreferredDisplayMode)
{
return;
}
if (!FlyoutPageController.ShouldShowSplitMode)
{
FlyoutPageController.CanChangeIsPresented = true;
}
FlyoutPage.UpdateFlyoutLayoutBehavior();
}
public override void WillRotate(UIInterfaceOrientation toInterfaceOrientation, double duration)
{
// I tested this code on iOS9+ and it's never called
if (!Forms.IsiOS9OrNewer)
{
if (!FlyoutPage.ShouldShowSplitMode && IsFlyoutVisible)
{
FlyoutPage.CanChangeIsPresented = true;
PreferredDisplayMode = UISplitViewControllerDisplayMode.PrimaryHidden;
PreferredDisplayMode = UISplitViewControllerDisplayMode.Automatic;
}
FlyoutPage.UpdateFlyoutLayoutBehavior();
MessagingCenter.Send <IVisualElementRenderer>(this, NavigationRenderer.UpdateToolbarButtons);
}
base.WillRotate(toInterfaceOrientation, duration);
}
