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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The UIAppearance protocol
If there's one thing the controls we've talked about so far have in common, it is that they can be graphically customized with the use of simple functions. This is a great a feature that has been added to UIKit since iOS5, and it allows us to modify the looks of any default control with just a few lines of code.
This feature is improved by the UIAppearance protocol that, thanks to the appearance proxy, forwards the customizations to all the instances of a specific class. The appearance proxy for a class can be retrieved using the appearance function, and as it returns instancetype, its properties can be easily accessed. Here is an example of the code needed to set onTintColor for all the UISwitch instances of an application: ...
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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.
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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.