// 21 articles available
An app that ran fine for years suddenly hangs on the splash screen when you debug it on an iOS 27 device, with an OS_dispatch_mach_msg unrecognized selector in the console. Here is what causes it and the one-line fix.
Xcode 27's minimum deployment target is iOS 15.0. Fix the IPHONEOS_DEPLOYMENT_TARGET "supported range is 15.0 to 27.0" error in your app and pods.
Xcode 27 brings monthly subscriptions with a 12-month commitment, a reworked offer code redemption API, Bundles and Suites, and a unified App Review submission flow. Here is what each one changes for your code.
A practical guide to App Tracking Transparency in iOS, covering the Info.plist usage description, the ATTrackingManager API, authorization statuses, and when to actually prompt the user from SwiftUI.
How to set up custom URL schemes and Universal Links in iOS, handle incoming URLs in SwiftUI, and route users to the right screen.
A practical guide to scheduling and handling local notifications in iOS using UNUserNotificationCenter, from permission requests to actionable notification categories.
Learn how to use Swift's RegexBuilder DSL to create readable, type-safe regular expressions with compile-time checking and strongly-typed captures.
Master Swift's TaskGroup for parallel async work with proper cancellation, error handling, and result collection. Learn common patterns for batch operations and concurrent pipelines.
Swift 6 introduces typed throws, letting you declare exactly which error types a function can throw. Learn how this improves API contracts and enables exhaustive error handling.
Understand the key difference between a UIView's frame and bounds properties, and when to use each in your iOS apps.
Learn how to test push notifications on iOS simulators without needing a device or server setup using xcrun simctl push.
Learn how to create beautiful, interactive charts in SwiftUI using Apple's Swift Charts framework, from simple line charts to customized bar graphs.
Implement in-app purchases and subscriptions with StoreKit 2: load products, handle transactions, check entitlements, and wire it all into SwiftUI.
Learn how to use AppStore.ageRatingCode to read your app's current age rating and react to rating changes for parental consent compliance.
How glassEffect, GlassEffectContainer, glassEffectID and the glass button styles behave, with every example built on Xcode 27.1 and run on iOS 27.
PermissionKit lets children request parental permission to communicate with new contacts directly through Messages. Here's how to integrate it into your social or messaging app to create safer communication experiences.
Learn how to use AlarmKit to schedule alarms and countdown timers that appear on the Lock Screen and Dynamic Island on iOS 26.
How to traverse the view controller hierarchy to find the currently visible view controller.
Seeing pod install fail with Unknown ISA PBXFileSystemSynchronizedRootGroup? Xcode 16's folder-based groups are the cause. Here's the quick fix.
Learn how to detect when users enable Low Power Mode and automatically reduce animations, refresh rates, and visual effects to preserve battery life in your SwiftUI app.
How to check available and total disk space on iOS devices using URL resource values.