SwiftUI Study Guide 2026
Everything you need to pass the SwiftUI exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📚 SwiftUI Topics to Study (23)
✍️ Sample SwiftUI Questions & Answers
1. What is the difference between `.sheet` and `.fullScreenCover` in SwiftUI?
`.fullScreenCover` presents a modal that fills the entire screen, while `.sheet` shows a card that can be dismissed by dragging.
2. How do you make a List support multiple row selection in SwiftUI?
Pass a `Set` binding to `List(selection:)` and put the list into edit mode to enable multiple row selection.
3. Which modifier combines a gesture with a view while letting the gesture coexist with other gestures?
.simultaneousGesture() allows multiple gestures to be recognized at the same time rather than giving priority to one.
4. What function do you call to animate a state change in SwiftUI?
Wrapping a state change in `withAnimation {}` causes SwiftUI to animate any resulting view changes.
5. How does SwiftUI determine when to re-render a view?
SwiftUI's diffing engine re-evaluates and re-renders a view only when its declared dependencies (state, bindings, environment) change.
6. What does the `.transition()` modifier control in SwiftUI?
`.transition()` defines the animation applied when a view is inserted into or removed from the view hierarchy.