Xcode 7 Essentials - Second Edition
Language: English
Pages: 256
ISBN: 178588901X
Format: PDF / Kindle (mobi) / ePub
Step up your iOS development with the power and wealth of features of Xcode 7
About This Book
- Updated for the latest Xcode 7 release, this is the first book that will show you how to use all the new features available in Xcode 7 to their fullest
- This guide to will get you up and running with the entire workflow to develop Apple apps without previous Xcode experience
- Packed with plenty of tips on how to use Xcode with Swift 2 and other existing Apple frameworks to develop robust apps at a rapid pace
Who This Book Is For
If you are a novice programmer who is familiar with the concepts of object-oriented programming, but have little to no knowledge of Swift, Xcode, or Apple's Cocoa APIs, then this book is for you. Starting with an introduction to the basics of Xcode and the Swift programming language, you will learn all of the skills that are essential to build an app and submit it to the App Store
What You Will Learn
- Get an introduction to Xcode and get to know how to navigate and use the tool
- Build playgrounds to learn and explore the environment
- Create an adaptive UI with the interface builder that will help your app to scale through a wide range of devices
- Understand Table, Collection, and Stack views and find out how they can be implemented
- Create custom components for your application through frameworks and live previews
- Exploit Xcode's advanced features to elevate your debugging and testing capabilities
- Run your application on the physical device and submit it to the App store
In Detail
Apple's Xcode technology is making the development curve smoother than it has ever been with its easy-to-develop features and enhancements. With the latest release of Xcode 7, Apple has also added great support for Swift development.
This book will introduce you to all the new features of Xcode 7 and demonstrate how Swift programming can be much easier, faster, and simply better with Xcode!
Even if you're starting with just a little knowledge of Swift or Xcode, you will learn the basics of the language as well as the tool. You will then use this knowledge to create simple applications and will learn how to debug and optimize your code. At the end of this book, you would have learned enough to build, run and submit your very own application to the App Store.
Style and approach
This is a step-by-step guide, full of practical and real world examples, to help you get to grips with Xcode with ease. A demo project is also provided at the end of the book, where you can test your skills.
statements or loops statements: var isLatestVersionOfXcode = true if isLatestVersionOfXcode { print("Latest version!") } else { print("Old version") } The console output generated is as follows: Latest Version! Adding different types With this amount of information, we can get into some trouble. Let's say that we'd like to add the number of pies on a table to the value of pi (π): var pies = 10 // Implicit Int let pi = 3.14 // Implicit Double let piesPlusPi = pies + pi // Compiler error
classes are a bit confusing, but consider the following: An iPhone uses wCompact/hRegular in portrait and wCompact/hCompact in landscapeAn iPad uses regular for both dimensions, regardless of orientationAn iPhone 6 Plus uses wRegular/hCompact in landscape Instead of thinking in terms of grids and dimensions, you need to think in terms of how your layout will differ between these Size Classes. By moving your layout information from code to IB, you're able to support an iPad and an iPhone using
CustomExampleKit framework and add a breakpoint somewhere in the CustomControlView class by clicking on the gutter beside a line of code (a blue arrow will appear, pointing to that line of code), as follows: Note The image shows that the code has been stopped at a breakpoint. Go back to the Main.storyboard file and select your custom view. We can debug this selected view only without compiling and running our entire project by going to Editor | Debug Selected View. You'll see that Xcode stops
to a separate instruments application. Because of the extra step in running our app in this separate application, Apple started including this information inside of Xcode starting from Xcode 6. This information is invaluable for spotting issues in your application, such as memory leaks, or spotting inefficient code by watching the CPU usage. The preceding screenshot shows the Memory Report screen. Because this is running in the simulator, the amount of RAM available for your application is the
to the App Store The biggest limitation of not having the developer account is the lack of more advanced app capabilities. If you have an app ID that requires access to the following features, then it's time to purchase a membership: CloudKitGame CenterWallet (formerly Passbook)Apple PayIn-App PurchaseMapsKeychain sharingApp groupsData protectionHomeKitHealthKitWireless Accessory ConfigurationPersonal VPN (Personal Virtual Private Network)Inter-app audioBackground modesAssociated domains All