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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How to Find the Topmost UIViewController in Swift
Learn how to find the currently visible, topmost UIViewController in Swift on modern iOS, handling UIWindowScene, navigation stacks, and modals.
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How to Organize Code with MARK Comments in Swift
Learn how to replace Objective-C #pragma mark in Swift using // MARK:, // TODO:, and extensions to organize your Xcode jump bar…
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Fix: CocoaPods Did Not Set the Base Configuration in Xcode
Resolve the CocoaPods warning where Xcode fails to set the base configuration. Step-by-step instructions to reset xcconfig files or include Pods configs.
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Fix: UIButton Image Stretches to Full Size in Swift
Stop UIButton images from stretching or filling the entire button frame in UIKit. Learn modern iOS 15+ configuration fixes and legacy inset…
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How to Set UICollectionView Spacing Margins in Swift
Learn how to configure UICollectionView spacing margins and section insets in Swift using UICollectionViewFlowLayout, delegate methods, or Storyboards.
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Fix: Failed to Create Provisioning Profile in Xcode
Resolve the ‘Failed to create provisioning profile’ error in Xcode with step-by-step solutions for target destinations, bundle IDs, and team signing.
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How to Clean Xcode CoreSimulator Devices and Reclaim Disk Space
Learn how to safely clean ~/Library/Developer/CoreSimulator/Devices to free up gigabytes of disk space without breaking your Xcode simulator setups.
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Fix: Camera Not Available in iOS Simulator
Learn why the iOS Simulator does not support the camera hardware and how to handle camera features safely using mock providers and…
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How to Get the Current Device Language in Swift
Learn how to detect the device language, get the active bundle localization, and display localized language names using Swift and Foundation.
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Fix: Code Signing Errors: Remove Provisioning Profiles from Xcode
Fix Xcode signing conflicts and expired profile bugs. Learn how to remove provisioning profiles from Xcode 16 and older versions via Terminal…
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.