Book Image

Building Apple Watch Projects

By : Stuart Grimshaw
Book Image

Building Apple Watch Projects

By: Stuart Grimshaw

Overview of this book

With Apple’s eagerly anticipated entry into the wearable arena, the field is wide open for a new era of app development. The Apple Watch is one of the most important technologies of our time. This easy-to-understand book takes beginners on a delightful journey of discovering the features available to the developer, right up to the completion of medium-level projects ready for App Store submission. It provides the fastest way to develop real-world apps for the Apple Watch by teaching you the concepts of Watch UI, visual haptic and audio, message and data exchange between watch and phone, Web communication, and finally Visual, haptic as well as audio feedback for users. By the end of this book, you will have developed at least four fully functioning apps for deployment on watchOS 2.
Table of Contents (17 chapters)
Building Apple Watch Projects
About the Author
About the Reviewer

Using animation to the fullest

We have seen how animation can be used to produce a more vibrant, engaging user interface, but this is only scratching the surface of what can be done by animating the changes in the property values of UI elements. Despite the relatively modest number of properties we can animate, with a little imagination we can create effects that are simple, but which fundamentally alter the way we engage with the Apple Watch.

We have already seen in Chapter 2, Hello Watch, how simple it is to overcome the lack of a completion handler in calls to WKInterfaceController class's animateWithDuration method by extending the class with a method that chains together sequentially an arbitrary number of animation blocks. By combining concurrent and sequential animations we have at our disposal an unlimited number of ways to add complex (although often subtle) movement to our interface without having to deal with masses of complex code. The key here is to think about what we can do...