UIKit

UIKit is the traditional, imperative framework for building iOS user interfaces. While SwiftUI is the future, UIKit remains essential for maintaining existing apps and unrestricted access to the OS.

When to Use

• Maintaining legacy iOS codebases (Objective-C or Swift).
• Fine-grained control over view hierarchy performance not yet possible in SwiftUI.
• Using third-party libraries that haven't migrated to SwiftUI ViewRepresentables.

Quick Start