... thread managers, auto-matically creating and closing threads according to their respective queue configu-rations. They’re very hands off, and very efficient. Instead of developing and managing multiple ... BOOKInstagram, Flipboard, foursquare, Facebook, and Twitter—all of these apps on the iPhone and iPad have at least one thing in common. They all take advantage of frameworks in iOS. It’s my goal ... multithreading, you can fork off a separate thread to handle the down-load process and update your main UI periodically. Alternatively, you can show a spinner in the table view controller indicating...