Xcode 7 Essentials - Second Edition
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
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.
While in this mode, you can inspect any objects that are in the memory, see a trace of the program's execution flow, and even step the program into or over instructions in your source code. Creating a breakpoint is simple. In the standard editor, there is a gutter that is shown to the immediate left of your code. Most often, there are line numbers in this area, and clicking on a line number will add a blue arrow to that line. That is a breakpoint. Note If you don't see the line numbers in your
devices by simply registering them and following the rest of these instructions. The last steps Finally, we need to fix some settings in our app's project file. In the Project Navigator sidebar (Cmd + 1), select the top-level name of the project. The project file is where many different advanced settings for the project are made. In the General tab, we first need to set a few things in the Identity section in order to tell Xcode which Apple ID to run our app under and which devices are able to
included to support an iPad. Those images and that code simply make your app size bigger. App slicing will remove the iPad resources for you to help save that space. Behind the scenes, Apple will create platform-specific versions of your app and handle their distribution to the appropriate platform for you. Bytecode Bytecode is optional, but on by default on iOS, but is mandatory on watchOS and tvOS. Usually, when you submit an app to the App Store, you submit a compiled version of it. With
limits and Apple's recommendations in mind will help you minimize the memory usage of your app, keep the network traffic required to run your app at a minimum, and keep your app as small as possible. It's worth noting that you're required to use on-demand resources with tvOS apps as you're only offered 200 MB of space for your app. Any resources outside of this will need to be downloaded using this system. On-Demand Resources is an advanced topic with specific use cases; as such, it's not
display and let you modify the various attributes of the object on the screen. This is where you set font sizes, transparency, background colors, and so on.The Size Inspector (5) (Cmd + Opt + 5): This displays the size of the control selected and the associated constraints that help position it within its super view.The Connections Inspector (6) (Cmd + Opt + 6): This displays the connections created in Interface Builder between the UI and the code. Below this area is the objects library. It