In my initial view controller, I have have a UITabbarController as a child view controller. I want to have UITabbarController to display its UITabbar with traitCollection having horizontalSizeClas...

I am trying to work with this function but it does not work with iOS 17. I want to make a change every time I switch between dark and light mode. This is my function: override func traitCollectionD...

I support dark mode. In some of my view controllers I use traitCollectionDidChange(_) for handling user interface style changes. override func traitCollectionDidChange(_ previousTraitCollection: UI...

Let's say I have a custom color in my app: extension UIColor { static var myControlBackground: UIColor { return UIColor(red: 0.3, green: 0.4, blue: 0.5, alpha: 1) } } I use this in a custom con...

In my app I allow the user to override the appearance that is set on the device. Here's the class that handles updating the UI if they want to override the system-wide appearance: class UserInterf...

I have a UITabBar which has to have a traitCollection with compact horizontalSizeClass. Because on a regular horizontalSizeClass, UITabBar renders TabBarIcon and Title side by side. I did subclass...

Some of the UI setups not working automatically with the Dark/Light mode change as the UIColor. For example shadow in layer. As I need to remove and drop shadow in dark and light mode, I need somew...

Apple recommends that we use traitCollectionDidChange and compare trait collections using hasDifferentColorAppearance to catch when dark mode is toggled, and act on it if we need to. Like this: ov...

The new size classes based Autorotation is a pain if you want custom behavior. Here are my requirements and flow: View Controller 1(VC1) modally presents View Controller 2 (VC2) VC1 only supports...

My open source library needs to be able to call UIApplication.shared.preferredContentSizeCategory. But UIApplication.shared is unavailable in extensions. The build error suggests that I find a view...

I'm moving over to UIPresentationController based presentations for my view controllers but have run into some confusion with the API. I have a custom sidebar style view controller presentation (s...

I am building my custom UIControl, a custom button built as an IBDesignable, which needs to change based on the size class in which it is being displayed. I have a method -setupForTraitCollection, ...

I am presenting a modal view controller using UIPresentationController. I am setting the frame of presentedView less than the containView's bounds using following method: override func frameOfPres...