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SwiftUI vs UIKit interview
The SwiftUI versus UIKit question appears in nearly every iOS interview. Interviewers are testing judgment, not loyalty to one framework.
When each framework wins
SwiftUI is the default for new work in 2026: declarative, state-driven UI with less boilerplate and fast iteration. UIKit still matters for complex custom interactions, fine-grained control over layout and animation, performance-critical lists, and large legacy codebases. Frame it as a spectrum, reaching for SwiftUI first and dropping to UIKit where you need control it does not expose.
Bridging and edge cases
Know how to embed UIKit in SwiftUI with UIViewRepresentable and UIViewControllerRepresentable, and host SwiftUI in UIKit with UIHostingController, using a Coordinator for delegate callbacks. Be ready to name where SwiftUI breaks down, such as precise scroll control and some complex gestures. Acknowledging limits reads as more senior than claiming SwiftUI does everything.
Go deeper than a summary
Share Your Screen works topics like this through in full: 75 solved Swift problems with tests, 9 real case studies, and 7 annotated mock interviews, so you rehearse the live round instead of just reading about it.
Frequently asked
Should I say SwiftUI or UIKit is better?
Neither. Explain the trade-offs and when you would reach for each. Judgment is what is being tested.
How do you use UIKit inside SwiftUI?
Wrap the view or controller with UIViewRepresentable or UIViewControllerRepresentable, and use a Coordinator to handle delegate callbacks.