Readaggregator - iOS, Swift, Apple, Programming, Mobile

2022-01-13 22:58:21 If you're still maintaining a legacy codebase with a lot of Objective-C code - worth reading this migration guide by far.
https://www.steveonstuff.com/2022/01/13/migrating-from-objc-to-swift.html
#swift #objc Open / Comment

2022-01-08 13:25:02 Great summary of the most annoying Swift Playground limitations at the moment. But what the name implies - it's a playground, not Xcode on iPad yet.
https://www.cephalopod.studio/blog/lessons-from-developing-an-app-on-the-ipad-from-start-to-finish-on-the-app-store
#swift_playground Open / Comment

2022-01-05 19:15:46 Oh, what a surprise!

“Use switches in table rows only. Switches are intended for use in tables, such as in a list of settings that can be toggled on and off. If you need similar functionality in a toolbar or navigation bar, use a button instead, and provide two distinct icons that communicate the states.”

with details: https://twitter.com/featherless/status/1477294898718154752?s=21

#iOS #HIG Open / Comment

2022-01-04 16:03:24 The guys at pointfreeco have done an amazing investigation for triggering custom Xcode warnings at runtime using os_log.

p.s. Don’t try this at Home Release

https://www.pointfree.co/blog/posts/70-unobtrusive-runtime-warnings-for-libraries
#Xcode Open / Comment

2021-12-31 17:48:59 Best wishes to the coming year!

May your code always compile on the first try, found bugs are features actually and all projects start with iOS 15.



By the way, I'm not sure it'd be interesting to all of you, but if you have your own domain or are just curious about DNS records, there's a great site to play with. Open / Comment

2021-12-24 11:09:21 Oh, looks like a great Christmas present!
https://forums.swift.org/t/introducing-swift-for-visual-studio-code/54246
#swift #visual_studio Open / Comment

2021-12-20 09:34:38 Apple’s use of Swift and SwiftUI in iOS 15.
https://blog.timac.org/2021/1219-state-of-swift-and-swiftui-ios15/
#statistics #iOS Open / Comment

2021-12-15 23:50:53 Apparently only I've not written about the new Swift Playground for iPads yet...

TL;DR

- Yes, you can now build SwiftUI apps right on your iPad.
- Yes, you can use also UIKit if you prefer.
- Yes, you can ship your apps to the App Store straight from your iPad.
- Yes, it supports Swift Package Manager packages from GitHub.
- Yes, you get the fantastic new code completion, just like with Xcode.
- Yes, it ships with Swift 5.5 and all the concurrency awesomeness that entails.

https://www.hackingwithswift.com/articles/244/swift-playgrounds-4
#iPad #swift_playground Open / Comment

2021-12-14 09:33:15 If you are looking forward to adopting new concurrence features in Xcode 13.2, don’t install Xcode from AppStore.

To workaround this issue, please re-download Xcode 13.2 directly from Releases section.

https://developer.apple.com/forums/thread/696504?page=1
#Xcode Open / Comment

2021-12-02 00:39:36 FYI, be careful!

«In iOS 15 and later, the system may, depending on device conditions, prewarm your app — launch nonrunning application processes to reduce the amount of time the user waits before the app is usable. Prewarming executes an app’s launch sequence up until, but not including, when main() calls UIApplicationMain. This provides the system with an opportunity to build and cache any low-level structures it requires in anticipation of a full launch.

If your app executes code before the call to UIApplicationMain, such as in static initializers like load(), don’t make assumptions about what services and resources are available. For example, keychain items may be unavailable because their data protection policies require an unlocked device and prewarming happens even when the device is in a locked state.»

UPD
Seems like a bug, but application(_:didFinishLaunchingWithOptions:) is invoked as well during a prewarning. I've sent a link to a thread in the comments.

https://developer.apple.com/documentation/uikit/app_and_environment/responding_to_the_launch_of_your_app/about_the_app_launch_sequence?language=objc#3894431
#iOS Open / Comment