Exit 8 for SwiftUI

Transcript

1. Exit 8 for SwiftUI ojun - DeNA co., Ltd. try! Swift Tokyo 2025 LT 2025 / 04 / 11
3. Exit 1 Prevent double taps or simultaneous taps
4. Exit 1 Prevent double taps or simultaneous taps Two buttons inside a VStack
5. Exit 1 Prevent double taps or simultaneous taps In this case, we need to prevent multiple buttons from being tapped simultaneously. However, SwiftUI doesn’t provide a direct API to handle mutual exclusion between buttons.
6. Exit 1 Prevent double taps or simultaneous taps Set isExclusiveTouch to false on the wrapped UIView and all of its child views. If needed, implement a custom gesture recognizer to handle touch exclusivity.
8. Exit 2 Match the line height to the Text
9. Exit 2 Match the line height to the Text Inside the ZStack, there's a Color and an HStack. The HStack contains a Rectangle and a titleView.
10. Exit 2 Match the line height to the Text This UI is similar to what you might see in a train schedule display.
11. Exit 2 Match the line height to the Text This UI is similar to what you might see in a train schedule display. However, you can see that the orange line doesn't match the height of the Text.
12. Exit 2 Match the line height to the Text By creating a structure that conforms to the Layout protocol, you can align their heights.
13. Exit 2 Match the line height to the Text Applying this layout to the original code allows the orange line to match the height of the Text.
15. Exit 3 Customize the loading indicator
16. Exit 3 Customize the loading indicator
17. Exit 3 Customize the loading indicator Since customization isn't possible in SwiftUI, we need to implement it using UIKit.
19. Exit 4 Dismiss the keyboard on scroll
20. Exit 4 Dismiss the keyboard on scroll This behavior is supported on iOS 16 and later. The keyboard automatically hides when the user scrolls, which simpli fi es the design.
21. Exit 4 Dismiss the keyboard on scroll By using scrollDismissesKeyboard, we can implement this in a much simpler way.
22. Exit 5 Presenting a share sheet
23. Exit 5 Presenting a share sheet This code works on iOS 16 and later. We're currently using UIActivityViewController to show the Share Sheet.
24. Exit 5 Presenting a share sheet By switching to ShareLink, we can eliminate the dependency on UIKit.
25. Exit 6 Empty data state
26. Exit 6 Empty data state
27. Exit 6 Empty data state
28. Exit 7 Mesh gradient expression
29. Exit 7 Mesh gradient expression
30. Exit 7 Mesh gradient expression Starting from iOS 18, MeshGradient makes it easy to implement mesh gradients.
32. Exit 8 Square Without GeometryReader
33. Exit 8 Square Without GeometryReader
34. Exit 8 Square Without GeometryReader It's possible to create a square without using GeometryReader by leveraging scaledToFit.