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 Programming
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Gesture Recognizer Basics
From tapping buttons to moving a slider, many built-in interface elements implement their own gestures. But sometimes you need to do something different: swipe through cars, give a quick gesture to reset state, or move a view to a new destination. All these gestures are easy to implement using UIGestureRecognizer and related classes.
UIGestureRecognizer is an abstract superclass and encapsulates the properties and behaviors that are common to any recognizer: what view the recognizer is attached to, whether it is enabled, where the touch is happening, how many fingers are on the screen, and so on. Built-in recognizers as well as your own custom ones are all based on the abstract one.
Recognizers have a few common attributes. ...
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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.