June 2011
Intermediate to advanced
590 pages
19h 31m
English
Content preview from iOS Programming: The Big Nerd Ranch Guide, Second 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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Master-Detail Communication
In Chapter 14, we discussed different options for allowing view controllers to send messages to each other. Using instance variables is the simplest option, and that’s what we’ve done in Nerdfeed – we gave the ListViewController a pointer to the WebViewController. In this simple application, this approach works fine. Now let’s make Nerdfeed a little more complex and write a delegate protocol instead.
Right now, the detail view controller displays the WebViewController when a row in the master view controller is selected. In a moment, you’re going to create another view controller called ChannelViewController that will display metadata about the RSS feed. You will also create an Info button on the ListViewController ...
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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.