iOS 11, Swift 4, and Xcode 9 provide many new APIs for iOS developers. With this cookbook, you'll learn more than 170 proven solutions for tackling the latest features in iOS 11 and watchOS 4, including new ways to use Swift and Xcode to make your day-to-day app development life easier. This collection of code-rich recipes also gets you up to speed on continuous delivery and continuous integration systems. Ideal for intermediate and advanced iOS developers looking to work with the newest version of iOS, these recipes include reusable code on GitHub, so you can put them to work in your project right away. Among the topics covered by this book: New features in Swift 4 and Xcode 9 Tools for continuous delivery and continuous integration Snapshot testing and test automation Creating document-based applications Updated Map view and Core Location features iOS 11's Security and Password Autofill Data storage with Apple's Core Data Creating lively user interfaces with UI Dynamics Building iMessage applications and sticker packages Integrating Siri into your apps with Siri Kit Creating fascinating apps for Apple Watch

Now that Apple has introduced the GameKit framework to its iOS SDK, you can integrate Game Center features directly into your iPhone and iPad apps. This concise cookbook shows you how it's done, with 18 targeted recipes for adding leaderboards, user authentication, achievements, multiplayer games, and many other features.

How do you display players' scores and achievements? How do you create Game Center accounts and add friends? Each recipe in this book includes a simple code solution you can put to work immediately, along with a detailed discussion that offers insight into why and how the recipe works.

Recipes include techniques to: Set up Game Center for an iOS App Use block objects and Grand Central Dispatch to write Game Center apps Authenticate a local player in Game Center Use iTunes Connect to create leaderboards and achievements Retrieve leaderboard and achievement information programmatically Handle players' state changes in multiplayer games

This popular cookbook, thoroughly updated in response to reader requests and new developments in iOS 5, helps you solve the vexing, real-life issues you're likely to face when creating apps for the iPhone, iPad, or iPod Touch. This edition contains more than 100 new recipes, each providing a clear solution and sample code that you can use right away. The focus of this book is to teach you how to write iOS apps, whether they're as simple as a music player or as complex as an app that mixes animations, graphics, multimedia, database, and cloud storage. You'll learn about iCloud, Automatic Reference Counting, storyboarding, Interface Builder, creating ad-hoc and simulator builds, provision profiles, graphics, animations, Grand Central Dispatch, Operations and Operation Queues, threads, timers, audio and video and many other iOS 5 tools and techniques. Topics include: * Automatic Reference Counting to drastically cut down the time required to write your iOS apps * iCloud to synchronize users' data to the cloud * Storyboarding to simplify creating your User Interface * UI components, including picker views, data pickers, web views, popovers, activity indicators, progress views, sliders, alerts, switches, and many more * Grand Central Dispatch to write blazingly fast iOS apps without having to worry about creating threads * The all-new asynchronous and synchronous network APIs * Using block-based animations and integrating graphical assets into your apps

Jazz up your iPhone and iPad apps with some slick graphics and animation--and keep users from looking elsewhere. This short and concise book shows developers with even little Cocoa programming experience how to create impressive graphics and animation effects with relatively easy coding. Learn how to incorporate smooth animations and draw images in your apps to achieve the classy look you want.

The recipes in this book include step-by-step instructions and simple code solutions that you can put to work right away. Learn basic concepts for adapting to different screen sizes Construct, set, and use colors Draw text, images, lines, and rectangles Add shadows to shapes Create and draw gradients Learn how to animate and scale, rotate, or move views

Now that multicore processors are coming to mobile devices, wouldn't it be great to take advantage of all those cores without having to manage threads? This concise book shows you how to use Apple's Grand Central Dispatch (GCD) to simplify programming on multicore iOS devices and Mac OS X.

Managing your application's resources on more than one core isn't easy, but it's vital. Apps that use only one core in a multicore environment will slow to a crawl. If you know how to program with Cocoa or Cocoa Touch, this guide will get you started with GCD right away, with many examples to help you write high-performing multithreaded apps. Package your code as block objects and invoke them with GCD Understand dispatch queues--the pools of threads managed by GCD Use different methods for executing UI and non-UI tasks Create a group of tasks that GCD can run all at once Instruct GCD to execute tasks only once or after a delay Discover how to construct your own dispatch queues