Any application that provides users with some form of data that updates over time can implement background fetch. An application that implements background fetch is woken up by iOS periodically, and it's given a small window of time to fetch and process new data that has become available. The OS expects applications to call a callback when they're done with fetching and processing the data. The application uses this callback to inform the OS about whether or not it retrieved new data. First, you will learn about background fetch at a high level. Then, you'll learn about some of the details involved with background fetch, and lastly, you will implement background fetch in the MustC app.
Mastering iOS 12 Programming - Third Edition
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Mastering iOS 12 Programming - Third Edition
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Overview of this book
The iOS development environment has significantly matured, and with Apple users spending more money in the App Store, there are plenty of development opportunities for professional iOS developers. However, the journey to mastering iOS development and the new features of iOS 12 is not straightforward. This book will help you make that transition smoothly and easily. With the help of Swift 4.2, you’ll not only learn how to program for iOS 12, but also how to write efficient, readable, and maintainable Swift code that maintains industry best practices.
Mastering iOS 12 Programming will help you build real-world applications and reflect the real-world development flow. You will also find a mix of thorough background information and practical examples, teaching you how to start implementing your newly gained knowledge.
By the end of this book, you will have got to grips with building iOS applications that harness advanced techniques and make best use of the latest and greatest features available in iOS 12.
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Mastering iOS 12 Programming - Third Edition
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Table of Contents (35 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
Free Chapter
UITableView Touch-up
A Better Layout with UICollectionView
Creating a Detail Page
Immersing Your Users with Animation
Understanding the Swift Type System
Writing Flexible Code with Protocols and Generics
Improving the Application Structure
Adding Core Data to Your App
Fetching and Displaying Data from the Network
Being Proactive with Background Fetch
Syncing Data with CloudKit
Using Augmented Reality
Improving Apps With Location Services
Making Smarter Apps with CoreML
Tracking Activity Using HealthKit
Streamlining Experiences with Siri
Using Media in Your App
Implementing Rich Notifications
Instant Information with a Today Extension
Exchanging Data With Drag And Drop
Improved Discoverability with Spotlight and Universal Links
Extending iMessage
Ensuring App Quality with Tests
Discovering Bottlenecks with Instruments
Offloading Tasks with Operations and GCD
Submitting Your App to the App Store
Answers
Other Books You May Enjoy
Index
Customer Reviews