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

Adding vibrancy to animations

A lot of animations on iOS look bouncy and feel natural. For instance, when an object starts moving in the real world, it rarely does so smoothly. Often, something moves because something else applied an initial force to it, causing it to have a certain momentum. Spring animations help you to apply this sort of real-world momentum to your animations.

Spring animations are usually configured with an initial speed. This speed is the momentum an object should have when it begins moving. All spring animations require a damping to be set on them. The value of this property specifies how much an object can overflow its target value. A smaller damping will make your animation feel more bouncy because it will float around its end value more drastically.

The easiest way to explore spring animations is by slightly refactoring the animation you just created for the drawer. Instead of using an easeOut animation when a user taps the Toggle Drawer button, you can use a spring...