November 2013
Beginner
592 pages
17h 49m
English
book
Learning iOS Development: A Hands-on Guide to the Fundamentals of iOS Programming
by Maurice Sharp, Erica Sadun, Rod Strougo
Content preview from Learning iOS Development: A Hands-on Guide to the Fundamentals of iOS ProgrammingBecome 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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Specializing Recognizer Messages
You can create a custom recognizer by subclassing UIGestureRecognizer and implementing one or more of the touch event handlers. You are also likely to implement other methods from the superclass, as well as your own logic and state variables.
The recognizer has two main jobs: Keep the gestures state up to date and recognize your custom stroke and/or perform your custom behavior. The main event handler methods follow the sequence of a stroke:
touchesBegan:withEvent: is sent when the touches first occur—that is, when the user touches the screen.
touchesMoved:withEvent: is sent each time the user moves one or more ...
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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.