Skip to Content
Developing for Apple Watch, 2nd Edition
book

Developing for Apple Watch, 2nd Edition

by Jeff Kelley
May 2016
Intermediate to advanced
200 pages
6h 43m
English
Pragmatic Bookshelf
Content preview from Developing for Apple Watch, 2nd Edition

Passing Data Between Interfaces

To navigate directly to the Run Log page when a run is done, you need to call becomeCurrentPage of your RunLogInterfaceController. When you go back to it by calling reloadRootControllersWithNames(_:contexts:), you’re just passing the name of the controller to WKInterfaceController. You don’t get back any references to the new interface controller, so how can you call becomeCurrentPage on it?

One approach might be to use NSNotificationCenter. After you reload the controllers, you could send a notification with a short delay and then listen for that notification in your RunLogInterfaceController and call becomeCurrentPage. That would probably work, but there’s a better way. Remember the contexts parameter we were ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
QuotationMarkI wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
QuotationMarkI’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
QuotationMarkI'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Mark W.
Embedded Software Engineer

You might also like

Swift Development for the Apple Watch

Swift Development for the Apple Watch

Jon Manning, Paris Buttfield-Addison
Swift 5 for Absolute Beginners: Learn to Develop Apps for iOS

Swift 5 for Absolute Beginners: Learn to Develop Apps for iOS

Stefan Kaczmarek, Brad Lees, Gary Bennett

Publisher Resources

ISBN: 9781680501940Errata Page