Troubleshooting Xcode

Troubleshooting Xcode is a handbook for software developers of all levels creating applications for iOS and OS X using both Objective-C and Swift.

If you’ve struggled in the past to make Xcode work as expected, to solve problems that defy logic, and to understand Xcode’s misleading or cryptic error messages and unexpected crashes, Troubleshooting Xcode is for you.

Troubleshooting Xcode is great for the developer wanting to extend his or her knowledge about obscure problems and limitations involving the use of Xcode, Objective-C, and Swift as well as how to use automation to increase productivity and make some repetitive tasks easier.

What you’ll learn

• Learn about some classical bugs and limitations of iOS, OS X, and Xcode and how to solve or avoid them.
• Know when you should never use Storyboards for your OS X application.
• Discover several workarounds you can use to bypass some of the hardest problems you may face.
• Know how to use scripts to automate repetitive tasks like the creation of in- app purchase packages or icons for your application.
• Understand how you can create images that are better compressed and smaller.
• Learn how to avoid falling into common pitfalls.
• Learn how to use C to workaround some Objective-C limitations.

Who this book is for

iOS and OS X developers who need to troubleshoot problems and limitations with Xcode. Developers with all levels of experience will find helpful information in Troubleshooting Xcode.

Table of Contents

Chapter 1. Xcode crashing when opening a project file
Chapter 2. The identity used to sign the executable is invalid
Chapter 3. Xcode fails to compile and blames “SBPartialInfo”
Chapter 4. No matching provisioning profiles found
Chapter 5. Compressing images better than Photoshop
Chapter 6. Creating packages for in-app purchases
Chapter 7. Reduce up to 75% of the compiling time
Chapter 8. Declaring impossible “constants” in Objective-C
Chapter 9. Concurrency with Core Data
Chapter 10. Creating icons for your apps from Terminal
Chapter 11. UINavigationBar tint not working
Chapter 12. Debugging an insanely hard Quartz error
Chapter 13. Adding objects to a mutable array concurrently
Chapter 14. The app is damaged and can’t be opened
Chapter 15. Application failing to obtain a receipt
Chapter 16. Classes with the same name on different targets
Chapter 17. A case against Base Internationalization
Chapter 18. Checking for missing Localizable.strings
Chapter 19. You are declaring your NSString wrong
Chapter 20. CocoaPods: /Manifest.lock: No such file or directory
Chapter 21. Asset Catalogs bug
Chapter 22. App crashing without giving you clues
Chapter 23. NSUserDefaults not working for a sandboxed app
Chapter 24. Interface elements not updating
Chapter 25. Find and replace using regex
Chapter 26. Extracting a dictionary from an array
Chapter 27. Magical way of counting elements on an array
Chapter 28. OS X app not launching with the correct size
Chapter 29. Detecting the application target
Chapter 30. Disabling a method
Chapter 31. Deprecating a method
Chapter 32. Xcode “beachballs” when opening a project
Chapter 33. UIButton not grayed out
Chapter 34. Catching memory corruption
Chapter 35. SpriteKit crashing on didBeginContact:
Chapter 36. SpriteKit object not respecting boundaries
Chapter 37. A case against using Storyboards for Cocoa apps
Chapter 38. UIView Classes with independent rounded corners
Chapter 39. Making NSViews compatible with UIViews
Chapter 40. Detect with the UIPickerView stops spinning
Chapter 41. “Insane” NSDates
Chapter 42. Localizing the application name
Chapter 43. Centering views horizontally with Auto Layout
Chapter 44. Elements grayed out on Storyboard after copying
Chapter 45. Debugging Core Data
Chapter 46. “The package does not contain an Info.plist”
Chapter 47. Check the version of an app on the App Store
Chapter 48. Power tips: Beyond Xcode