Getting started with Xcode
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This document provides instructions for installing and using Xcode on Mac computers. It summarizes that there will be no computer science lecture the following week, and that Xcode is now available on library Macs. It then demonstrates how to install Xcode from the App Store, create a new project, write and run sample code, and use features like autocompletion, static analysis, and the debugger.
Getting started with Xcode
- 1. Computer Science Large Practical: Programming with Xcode Stephen Gilmore School of Informatics Friday 19th October, 2012 Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 1 / 47
- 2. News There will be no CSLP lecture next week. The next CSLP lecture will be on Friday 2nd November. As of Tuesday, Xcode is now available on all the Open Access Lab Apple Macs in the Main Library in George Square. If you are developing on the Macs in the library you do not need to install Xcode. We see first how to install Xcode if you are working on your (Mac) laptop. Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 2 / 47
- 3. Xcode is available from the App Store Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 3 / 47
- 4. Click to install Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 4 / 47
- 5. Supply your Apple ID password Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 5 / 47
- 6. The button will change to “Installing” Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 6 / 47
- 7. Foo Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 7 / 47
- 8. Accept the License Agreement Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 8 / 47
- 9. Some components may be updated Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 9 / 47
- 10. Requires system permission Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 10 / 47
- 11. Installing ... Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 11 / 47
- 12. Installing ... Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 12 / 47
- 13. Installation complete Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 13 / 47
- 14. Welcome screen Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 14 / 47
- 15. Create a new project Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 15 / 47
- 16. Many options, including iOS projects Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 16 / 47
- 17. Choose an OS X application Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 17 / 47
- 18. Choose a command-line tool Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 18 / 47
- 19. Choose options Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 19 / 47
- 20. Choose options Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 20 / 47
- 21. Choose Foundation for Objective-C Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 21 / 47
- 22. Can choose to create a git repository Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 22 / 47
- 23. Project main screen Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 23 / 47
- 24. Project has sample “Hello World” code Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 24 / 47
- 25. Autocompletion suggests options Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 25 / 47
- 26. Autocompletion suggests options Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 26 / 47
- 27. Autocompletion suggests options Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 27 / 47
- 28. Static analysis warns about code problems Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 28 / 47
- 29. Autocompletion works on literals too Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 29 / 47
- 30. Deliberately seeding a bug, overwriting a needed value Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 30 / 47
- 31. Static analysis warns about format string errors Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 31 / 47
- 32. Fixing the format string error Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 32 / 47
- 33. Running the code (first time) Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 33 / 47
- 34. Requires authentication Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 34 / 47
- 35. Build succeeded Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 35 / 47
- 36. Output in console Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 36 / 47
- 37. Using static analysis to find errors (choose Analyze) Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 37 / 47
- 38. Errors detected: value stored to ‘s’ is never read Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 38 / 47
- 39. Xcode decides to download libraries Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 39 / 47
- 40. Xcode decides to download libraries Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 40 / 47
- 41. Decide to initialise string Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 41 / 47
- 42. Looking for appropriate init method Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 42 / 47
- 43. Looking for appropriate init method (initWithString: ?) Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 43 / 47
- 44. Using “initWithString:” with a literal is redundant Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 44 / 47
- 45. Checking documentation Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 45 / 47
- 46. Code compiles without warnings — even with Analyze Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 46 / 47
- 47. Produces expected result Stephen Gilmore (School of Informatics) Computer Science Large Practical Friday 19th October, 2012 47 / 47