Beginning Xcode: Swift Edition (2nd Edition)
Matthew Knott
Language: English
Pages: 544
ISBN: B01JXMO49I
Format: PDF / Kindle (mobi) / ePub
Beginning Xcode, Swift Edition will not only get you up and running with Apple's latest version of Xcode, but it also shows you how to use Swift in Xcode and includes a variety of projects to build.
If you already have some programming experience with iOS SDK and Objective-C, but want a more in-depth tutorial on Xcode, especially Xcode with Apple’s new programming language, Swift, then Beginning Xcode, Swift Edition is for you. The book focuses on the new technologies, tools and features that Apple has bundled into the new Xcode 6, to complement the latest iOS 8 SDK.
By the end of this book, you'll have all of the skills and a variety of examples to draft from to get your Swift app from idea to App Store with all the power of Xcode.
° Build (Ɖ+B). If everything’s in order, you should see a small dialog stating that the build has completed successfully. It’s time to run your application: choose Product ° Run (Ɖ+R), and Xcode will build and then run the application using the target specified, which is (by default at this stage) the iOS Simulator. The iOS Simulator is invaluable when you need to test your application quickly or test a feature that you’ve recently implemented. However, it’s important to note that testing your
preparation work is complete! So far you’ve renamed the default view controller classes and created an extra one, created entries in the Asset Catalog and populated it with some icons, and removed the default view controllers from the storyboard and replaced them with three brand-new ones, all before setting the classes, icons, and titles of each one. You’re ready to learn more about building great interfaces. Tracking Location with the Track It Tab For the first tab, you create a view that
warnings, but these should diminish as you add more constraints. 8. Let’s sort out the positioning. With the four elements still selected, click the Align button and then check Horizontal Center In Container, as shown in Figure 6-38. Click Add 4 Constraints. Your preview still looks horrendous, but you’re a couple of clicks away from finishing. Figure 6-38. Centering the four elements in the view with constraints CHAPTER 6: Constraints 9. 10. 169 Tap a green area of the view in the
Interface Builder to deselect those four elements. The only element that is missing in terms of constraints is the vertical spacing between labels and text fields; fix this by going to Resolve Auto Layout Issues and choosing Add Missing Constraints under the All Views In View Controller, just as you did back in Figure 6-25. If everything has worked as planned, your layout for the iPad should snap into place as shown in Figure 6-39. There are still Xcode warnings, because the elements being
the Move to Trash option. Figure 7-7. The dialog presented by Xcode when removing files via the Project Navigator Congratulations: you’ve removed all the unnecessary files and views from the project! You’re now going to step away from the storyboard for a moment to create four custom view controllers for the views by subclassing either UITableViewController or UIViewController. CHAPTER 7: Storyboards 189 Creating View Controllers You can add as many view controllers to the storyboard as you