What Not to Do: Rocky Road to Banner View
summary
Builds a SwiftUI banner component through three iterations: first a State-driven banner appears inside child view which breaks when a child should not host it, then a BannerManager via dependency injection and EnvironmentObject that becomes testable, and finally a solution using two view modifiers that create and inject the manager so views that don’t need banners stay banner-free. Notes a practical downside: it crashes if the top-level modifier is forgotten and cannot be used inside UIKit screens.
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chapters (7)
- 0:00Introduction
- 1:07Project overview
- 3:16First mistake
- 6:27Second iteration
- 8:18Final solution
- 11:32Key takeaways
- 13:56Conclusion
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