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  • Using iOS 16 view modifiers with iOS 15 targets

    calendar Sep 20, 2022 · 6 min read · SwiftUI iOS  ·
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    With each new version of iOS, Apple introduces new SwiftUI features to add new features and plug holes in the framework. This article provides a solution for using new view modifiers that ship with new iOS versions--without raising the app's minimum iOS target setting. What are View Modifiers If you've used SwiftUI …


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  • Check if a SwiftUI View is in Preview

    calendar Nov 17, 2021 · 2 min read · SwiftUI iOS  ·
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    SwiftUI Preview is a fantastic piece of development tooling to quickly iterate UI designs in Xcode. But sometimes the code in your view just doesn't work--or worse it crashes the preview engine. How can we work around this issue? I ran into a Preview crash issue in a SwiftUI view containing a Sign in with Apple button. …


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  • Observing ViewModel Changes in SwiftUI

    calendar Jul 12, 2021 · 7 min read · SwiftUI  ·
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    SwiftUI uses declarative UI programming, where Views have immutable state, changing automatically as the data state they depend on changes. This is a mindset change for most iOS/macOS developers: instead of changing the UI with a “command and control” MVC mindset, data state changes indirectly change the UI. But how …


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  • A visual reference to SwiftUI DatePicker styling for iOS and macOS

    calendar Feb 8, 2021 · 3 min read · SwiftUI iOS macOS  ·
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    Each section below provides a snippet of code that configures a particular DatePicker, followed by the UI component created by iOS and macOS output for the specific component configuration. -- Some SwiftUI styles are not available on both iOS and macOS. For example the Wheel style is iOS only; the Stepper style is …


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Copyright  Rob Kerr. All Rights Reserved

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