Search results | Apple Developer Forums

Reply to NSMutableAttributedString initialisation to prevent crash

I really need the info that such a report contains Someone else sent me an Apple crash report and that let me refresh my understanding of this issue. Sadly, this is a known bug in iOS (r. 23592459) that can potentially affect anyone who constructs an NSAttributedString from HTML. There isn’t a good workaround for this other than to avoid this API altogether. My advice: If you’re displaying large chunks of complex HTML, use a WKWebView. If this HTML is highly constrained — perhaps you’re just using HTML as an easy way to transfer a constrained set of attributes, like bold and italics — create your own markup system that doesn’t relying on HTML. Or parse the HTML for just these attributes and use the result to create your attributed string. Alternatively, consider using the Markdown support we added in macOS 12 and iOS 15. For the details, watch WWDC 2021 Session 10109 What’s new in Foundation. IMPORTANT Foundation’s Markdown support is strongly integrated with SwiftUI but it’s not limited to SwiftUI

App & System Services General

Apr ’19

Is SwiftUI backwards compatible with iOS 12 and below?

Is SwiftUI backwards compatible with iOS 12 and below? Or will it be eventually?I still have lots of users using iOS 11 and 10.

UI Frameworks SwiftUI SwiftUI

13

0

26k

Jun ’19

Release Notes for SwiftUI Tutorials

When browsing the new SwiftUI Tutorials in Xcode, please take note of the following items mentioned in the Xcode 11 Beta Release notes:1. After following Section 7, Step 7 in the Building Lists and Navigation tutorial, you might encounter an error in your project’s SceneDelegate.swift file.Workaround: Update line 14 of SceneDelegate.swift to use LandmarkList instead of LandmarkDetail:window.rootViewController = UIHostingController(rootView: LandmarkList())2. After following Section 5, Step 3 in the Handling User Input tutorial, you might encounter an error in the preview provider.Workaround: Undo the change to the LandmarkDetail initializer, so that you only add the environmentObject(_:) modifier:struct LandmarkDetail_Preview: PreviewProvider { static var previews: some View { LandmarkDetail(landmark: landmarkData[0]) .environmentObject(UserData()) } }The web version of the SwiftUI Tutorials has the correct steps.

UI Frameworks SwiftUI SwiftUI

5

0

2.3k

Jun ’19

Xcode 11 Beta SwiftUI Canvas.. not showing?

I downloaded the new XCode 11 Beta this afternoon, found this Apple Tutorial, figured I'd start to take a peek at it. Made the sample app, as instructed. The Canvas isn't showing. I've clicked Editor - Editor & Canvas (that is checked). The left side of the screen looks just like the tutorial, but there is no preview iphone sort of sumultor. Clicked on all the little buttons, but have found nothing. Anyone get it to work?https://developer.apple.com/tutorials/swiftui/creating-and-combining-views

App & System Services Core OS iOS

11

0

25k

Jun ’19

Reply to Xcode 11 Beta SwiftUI Canvas.. not showing?

To preview and interact with views from the canvas in Xcode, ensure your Mac is running macOS 10.15 beta.https://developer.apple.com/tutorials/swiftui/creating-and-combining-views

App & System Services Core OS

Jun ’19

Reply to How do I show canvas?

Perhaps you're not running on the beta(?): Tools for SwiftUI development are only available when running on macOS 10.15 beta.

UI Frameworks SwiftUI

Jun ’19

Reply to Xcode 11 Beta SwiftUI Canvas.. not showing?

I'm guessing because tools for SwiftUI development are only available when running on macOS 10.15 beta?

App & System Services Core OS

Jun ’19

Reply to Xcode 11 Beta SwiftUI Canvas.. not showing?

Yes, you are right, in the Xcode release note:Tools for SwiftUI development are only available when running on macOS 10.15 beta.

App & System Services Core OS

Jun ’19

Xcode 11 Beta SwiftUI canvas popovers not working

I'm working through the SwiftUI Essentials tutorial in the Xcode 11 Beta developer documentation, and neither the canvas, nor the popover menus described in the documentation are appearing.I'm running Mojave with the latest updates. Am I missing something? Do I need to also be on the Catalina beta as well?

Developer Tools & Services Xcode Xcode

3

0

1.9k

Jun ’19

SwiftUI Programatically?

HI,My project bypasses storyboards, I like to keep everything in code that I write myself. Can SwiftUI be used this way? Also, how powerful is SwiftUI? Is it just for writing simple user interfaces or can it be used to write highly customized ones that rival a programatic approach?ThanksBrian Duffy

UI Frameworks SwiftUI SwiftUI

2

0

1.6k

Jun ’19

Reply to SwiftUI Programatically?

I'm no expert, but I will try to answer.SwiftUI uses only source code to describe the UI. No storyboard files.SwiftUI is similar to other reactive UI frameworks, which are quite powerful.I think the intent here is to be able to use SwiftUI for all apps. It's pretty cool how you can adopt it piecemeal within your app. cheers

UI Frameworks SwiftUI

Jun ’19

SwiftUI Demo Issue

HI All:I tried to follow the Landmarks tutorial for Swift UI and I'm stuck looking for the RESUME button as described in the tutorial. It is absolutely nowhere to be found I only have this little picture of a code spippet instead of the actual device preview:Has anyone else experienced this or even better, know how to fix it?Best,Mark

Programming Languages Swift Swift

3

0

1.7k

Jun ’19

Swiftui mac error

I get this error when I try to start my app as mac app:underlying: Error Domain=NSOSStatusErrorDomain Code=-10661 (null) UserInfo={_LSLine=3554, _LSFunction=_LSOpenStuffCallLocal}, failureCategory: UVFoundation.FailureCategory.infrastructureFailure)

UI Frameworks SwiftUI SwiftUI

1

0

1.9k

Jun ’19

SwiftUi basic questions

Hi, just some general questions on SwiftUI:1 . What is exactly swiftUi?2. How is swiftUI different from storyboards and from AppKit, UiKit etc…?3. Does SwiftUI allow you to drag and drop Objects like story boards?3. How does it relate/corrolate with storyboards?Also, how easy does it seems to migrate a current existing app to swiftui?Thanks.

UI Frameworks SwiftUI SwiftUI

4

0

3.8k

Jun ’19

Reply to SwiftUI Demo Issue

This is correct, at least in Beta 1. According to the Xcode 11 Beta Release Notes, Tools for SwiftUI development are only available when running on macOS 10.15 beta.

Programming Languages Swift

Jun ’19

swiftui

Post

Replies

Boosts

Views

Activity