Topic

SwiftUI

A collection of 8 issues

Document-based SwiftUI apps on visionOS 2.4 are unusable due to a regression

TL;DR: As a result of a gnarly regression, every document-based SwiftUI app on visionOS 2.4 is duplicating views, rendering document-based app completely unusable on the platform. I was working on porting one of my side project apps from macOS to visionOS, and at some point wanted to test

Adding Subtitles macOS Menu Items using SwiftUI

At this point, AppKit developers with their finger on the pulse may be familiar with setting subtitles on NSMenuItem using the subtitle property, which has been available since macOS 14.4. In fact, I was the one who added it back when I worked at Apple. Achieving the same in

Mysterious Runtime Crashes in Swift 6 Language Mode

Swift 6 language mode promises compile-time stricter concurrency checking, aimed at preventing and eliminating data races, runtime memory corruption, as well as other common but hard to debug issues. While adopting the new language mode can be a bit of a challenge for larger or less modular projects, Swift 6

Implementing a Modern SwiftUI Circular Progress Bar & Control

When I first wrote PZCircularControl in 2019, SwiftUI was still in its early days. The framework has matured significantly since then, introducing new features that enable interactions that were previously only achievable by dropping down to the Kits. Recently, I revisited the codebase and decided that a complete refactor of

SwiftUI's handling of the Mac menu bar is still pretty bad

While trying out a few things around the SwiftUI document handling and lifecycle in a macOS application, I came across a pretty bad issue. Not only did it not do as the API promised, it actually messed with the menu in ways that would be unrecoverable to a SwiftUI lifecycle

Synchronizing ScrollViews using SwiftUI

Synchronizing the scrolling positions between 2 (or more) ScrollViews in SwiftUI is a fairly common problem. There are a few questions and answers online covering it. Some solutions are passable, but none are satisfying. With the release of iOS 18.0 and macOS 15.0, SwiftUI has gained a few

SwiftUI's New Geometry Modifiers & Best Practices: onGeometryChange, onScrollGeometryChange, and More

SwiftUI has recently introduced a family of geometry observation APIs: onGeometryChange, onScrollGeometryChange, and onScrollPhaseChange. The former is back deployed all the way back to iOS 16 and macOS 13 Ventura. These new modifiers are a pretty big deal in a few ways.

SwiftUI FocusedValue, macOS Menus, and the Responder Chain

On macOS, you can use the SwiftUI FocusedValue API to achieve a behavior similar to that of the Responder Chain, including autoenabling menu items.