In simple setups — a view behind an if condition, a sheet, a fullscreen cover — onAppear works exactly how you’d expect. Show the view, onAppear fires. Remove it, onDisappear fires. State is gone. Clean and predictable. Then you use TabView. You put a data fetch in onAppear on your … Read more
Written by: Karin Prater
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iOS app development, SwiftUI, Uncategorized
SwiftUI has been around since 2019. Apple has given us dozens of WWDC talks about it. And yet most developers — even experienced ones — … Read more
Written by: Karin Prater
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When working with async Swift code in Swift 6, you’ll eventually hit this classic question: “Is this code running on the main thread?” You might try … Read more
Written by: Karin Prater
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Apple just changed the game at WWDC 2025 with the Foundation Models framework. For the first time, you can now run the exact same AI … Read more
Written by: Karin Prater
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Writing tests sounds boring until your app breaks and you have no idea why. In this post, we’ll walk through how to write simple, focused … Read more
Written by: Karin Prater
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If you’ve ever shipped a bug where a button did nothing, a sheet didn’t show, or the wrong item appeared on screen—this post is for … Read more
Written by: Karin Prater
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Manual QA is slow, clumsy and error-prone. When you click through every flow in your app by hand, you lose precious time—and you still might … Read more
Written by: Karin Prater
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The Accidental Discovery One afternoon I was experimenting with EnvironmentKeys—trying to drive navigation and coordinate between screens without resorting to imperative hacks. SwiftUI’s environment feels … Read more
Written by: Karin Prater
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Let’s be honest—many of us avoid writing tests for our iOS apps. Not because we don’t care about quality, but because the current tooling often … Read more
Written by: Karin Prater
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Hey there! So I’ve been diving into architectural patterns lately, and it’s been quite the journey. I wanted to share some thoughts on how the … Read more
Written by: Karin Prater
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