Xcode · Swift · iOS · macOS
Fix Xcode errors, Swift bugs & iOS problems, fast.
Step-by-step fixes for build errors, code signing, SwiftUI, App Store Connect and the bugs that come with every new iOS and macOS release.
Browse by topic
For developers
Xcode Errors
Build failures, code signing and provisioning, simulator problems, archive and upload errors.
For developers
Swift & SwiftUI
Swift and SwiftUI explained with working code: concurrency, data flow, navigation, compiler errors.
For developers
App Store & TestFlight
App Store Connect, TestFlight builds, App Review rejections and StoreKit issues.
For iPhone & iPad
iOS Fixes
Battery drain, Wi-Fi, Bluetooth, storage and app problems after iOS updates.
For Mac
macOS Fixes
macOS update problems, Finder, external drives, storage and apps that won’t open.
What’s new
Developer Updates
New Xcode, SDK and OS releases: what changed, known issues and what to update.
Latest guides
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Fix: An App ID with Identifier Is Not Available in Xcode
Resolve the ‘An App ID with Identifier is not available’ error in Xcode when configuring bundle identifiers and provisioning profiles for iOS…
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How to Create an APNs PEM File for Push Notifications
Step-by-step guide to generating an APNs PEM certificate for Apple Push Notifications using Keychain Access, OpenSSL, or Fastlane.
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How to Dynamically Adjust UILabel Height to Fit Text in Swift
Learn how to make a UILabel dynamically adjust its height to fit multiline text in Swift using Auto Layout, sizeToFit, and boundingRect.
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How to Programmatically Return to a Previous View Controller in Swift
Learn how to programmatically return to the previous view controller in Swift using UINavigationController pop methods, modal dismissals, and unwind segues.
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How to Check an Object’s Type at Runtime in Swift
Learn how to inspect and verify object types at runtime in Swift using the is operator, optional downcasting with as?, and pattern…
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How to Resize an Image in SwiftUI
Learn how to resize an Image view in SwiftUI using resizable(), frame(), and aspect ratio modifiers to prevent images from clipping or…
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How to Create a Date from Strings and Components with Foundation
Learn how to create Swift Date objects from strings, timestamps, and calendar components safely using modern Foundation APIs without locale parsing bugs.
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Fix: Keyboard Does Not Appear in iOS Simulator
On-screen keyboard not showing when tapping text fields in the iOS Simulator? Learn how to toggle the software keyboard and disconnect your…
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Fix: UIButton titleLabel Font Not Updating in Swift
Fix font changes on UIButton in Swift. Learn how to update button fonts using iOS 15+ UIButton.Configuration or titleLabel with legacy buttons.
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How to Read the App Version and Build Number in Swift
Learn how to read CFBundleShortVersionString and CFBundleVersion in Swift using clean, crash-safe Bundle extensions for SwiftUI and UIKit apps.
Built from real problems
Every guide starts from an actual error message, release note or issue developers and users are hitting right now.
Fix first, theory second
A quick answer at the top, then the fixes in order of what’s most likely to work, with code you can copy.
Sources you can check
We link Apple’s release notes and the original discussions, and update guides when new versions change the answer.