December 2015
Beginner
196 pages
4h 36m
English
Content preview from Learning iOS UI DevelopmentBecome 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,
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Sending actions
The
ThermostatSlider implementation is almost complete; we are just missing a way to communicate the change of the current value, exactly as a common UISlider class does with the object subscribed to its value update.
The UIControl class provides methods to handle the target-action pattern in a really easy way; you can add a new target object with addTarget(_:action:forControlEvents:) specifying the action and event to which to subscribe. Then, you can remove this with the removeTarget(_:action:forControlEvents:) method. The list of targets subscribed to the control events can be retrieved using the allTargets() method. You can even obtain the name of the action called when a given event is triggered on a target using actionsForTarget(_:forControlEvent:) ...
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O’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.
I 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.
I’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.
I'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.