We are starting a new project that requires complex data visualization and deep integration with system APIs. While SwiftUI is the future, I’m worried about its limitations in handling highly customized layouts and performance with large datasets. Is it better to go 100% SwiftUI, or should we use a hybrid approach with 'UIViewRepresentable' for the more demanding parts of the interface?
3 answers
For enterprise apps in late 2023 and early 2024, a hybrid approach is usually the most pragmatic. SwiftUI is incredible for forms, settings pages, and standard list views because it reduces code volume by about 60%. However, for complex charts or custom video players, UIKit still offers the granular control you might need. We currently build our navigation and main shell in SwiftUI but wrap complex 'UICollectionView' layouts using 'UIViewRepresentable' when we hit performance bottlenecks. This gives us the speed of modern development without being blocked by the "missing pieces" in the newer framework.
Do you think the state management in SwiftUI, specifically with the new '@Observable' macro, has finally fixed the performance issues we used to see with '@ObservedObject'?
Don't underestimate the learning curve for your team. If they are UIKit experts, forcing a 100% SwiftUI shift mid-sprint can lead to a lot of technical debt very quickly.
Robert makes a great point. We decided to do "SwiftUI for all new features" while keeping the legacy core in UIKit. It’s been a great way to upskill the team without slowing down.
Christopher, it absolutely has. Before the Observation framework, changing one property often caused the entire view hierarchy to re-evaluate. Now, the system only refreshes the specific views that actually read that property. It’s much more like how React handles things. If you are targeting iOS 17 and above, '@Observable' makes SwiftUI feel like a completely different, and much faster, beast for data-heavy dashboards.