Book Image

Mastering iOS 12 Programming - Third Edition

By : Donny Wals
Book Image

Mastering iOS 12 Programming - Third Edition

By: Donny Wals

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.
Table of Contents (35 chapters)
Title Page
Copyright and Credits
Packt Upsell

Chapter 19

  1. Where can users find Today Extensions?

c) By Swiping right on the lock screen or Notification Center, on the leftmost screen on the Springboard, and 3D-touching an app.

  1. At what height are widgets displayed by default?

a) It depends on the screen width and user settings.

  1. How can you allow a user to expand your widget's height?

c) By setting the largest available display mode on the extension context to expanded.

  1. What is the best place to update your widget contents?

b) In widgetPerformUpdate(completionHandler:).

  1. How does iOS know the best moment to reload a widget's contents?

c) With the completion handler that is passed to widgetPerformUpdate(completionHandler:).