March 2013
Intermediate to advanced
1000 pages
34h 51m
English
Content preview from Programming iOS 6, 3rd EditionBecome 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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Chapter 37. Basic Networking
Networking is difficult and complicated, chiefly because it’s ultimately out of your control. My motto with regard to the network is, “There’s many a slip ’twixt the cup and the lip.” You can ask for a resource from across the network, but at that point anything can happen: the resource might not be found (the server is down, perhaps), it might take a while to arrive, it might never arrive, the network itself might vanish after the resource has partially arrived. iOS, however, makes at least the basics of networking very easy, so that’s what this chapter will deal with.
Many earlier chapters have described interface and frameworks that network for you automatically. Put a UIWebView in your interface (Chapter 24) and poof, you’re networking; the UIWebView does all the grunt work, and it does it a lot better than you’d be likely to do it from scratch. The same is true of MPMovieViewController (Chapter 28), MFMailComposeViewController (Chapter 33), and MKMapView (Chapter 37).
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