November 2013
Intermediate to advanced
576 pages
19h 3m
English
book
iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK
by Kyle Richter, Joe Keeley
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Background Task Identifier
To start a task that can complete running in the background, a background task identifier needs to be obtained from the application. The background task identifier helps the application keep track of which tasks are running and which are complete. The background task identifier is needed to tell the application that a task is complete and background processing is no longer required. The performBackgroundTask method in ICFViewController obtains the background task identifier before beginning the work to be done in the background.
__block UIBackgroundTaskIdentifier bTask =[[UIApplication sharedApplication]beginBackgroundTaskWithExpirationHandler:^{ ...}];
When obtaining a background task, ...
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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.