Resolving ScrollViewProxy Animation Issues in SwiftUI for iOS 17

Learn how to fix the animation disappearance issue with `ScrollViewProxy` in SwiftUI when using `scrollTo` in iOS 17.
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This video is based on the question https://stackoverflow.com/q/76881731/ asked by the user 'wheatset' ( https://stackoverflow.com/u/19628318/ ) and on the answer https://stackoverflow.com/a/76956936/ provided by the user 'liudasbar' ( https://stackoverflow.com/u/8574785/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Tackling the ScrollViewProxy Animation Issue in SwiftUI on iOS 17

If you're a developer working with SwiftUI, you may have encountered the issue where the scrolling animation using ScrollViewProxy doesn’t behave as expected in iOS 17. Specifically, you may have noticed that when you wrap your proxy.scrollTo() call inside withAnimation, the animation simply doesn’t trigger. What makes this particularly frustrating is that it works perfectly fine in iOS 16, leading many to wonder if this behavior is a bug or the result of an API change. In this post, we will delve into this problem and provide an effective solution to restore the scrolling animation functionality.

Understanding the Problem

In earlier versions of iOS, developers could achieve smooth scrolling animations by implementing the scrollTo method within an animation block. Here is a simplified version of how this is usually implemented:

[[See Video to Reveal this Text or Code Snippet]]

However, upon testing this code within an application on iOS 17, you might find that while the scroll action occurs, it lacks the smooth animation that you’d expect.

Is It a Bug or a Change?

As it turns out, the lack of animation behavior in ScrollViewProxy was a temporary quirk in the iOS 17 beta release. According to the latest updates, this issue has since been addressed in build 21A5319a (Developer Beta 7). Developers can breathe a sigh of relief as animation support for the scrollTo function is back!

Fixing the Scroll Animation

If you've been affected by this issue, there’s no need for complex workarounds. Simply updating to the latest iOS 17 build should resolve the problem instantly. Here’s a breakdown of the steps you need to follow:

Check Your Current iOS Version: Ensure that your development environment is running on the latest iOS 17.0 (Developer Beta 7 or later).

Update Your Xcode: Make sure that you are using the latest version of Xcode that supports iOS 17.

Test Your Code: Run the following example code snippet to confirm that the withAnimation block now works correctly.

[[See Video to Reveal this Text or Code Snippet]]

Verify Animation: Press the “Scroll” button in the List and observe the smooth animation as it scrolls to the specified item.

Conclusion

In conclusion, the animation behavior of ScrollViewProxy in iOS 17 has been restored with recent updates, ensuring that developers can create fluid and engaging user experiences once again. By staying updated on the latest changes in developer beta releases, you can avoid potential pitfalls and make the most out of the tools available to you.

If you have any further questions or need assistance with SwiftUI development, feel free to leave a comment! Happy coding!

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