iOS 5 Core Frameworks: Develop and Design: Working with by Shawn Welch

By Shawn Welch

Apple has made it effortless to start constructing for iOS out of the field. To entry the genuine strength of iOS, besides the fact that, you want to transcend those basic instruments and APIs. skilled app developer Shawn Welch teaches you ways to faucet into the real power of iOS through incorporating one of the most strong applied sciences it has to offer.

Using middle facts and iCloud, you will how you can shop info in the community and sync seamlessly throughout a number of units and systems. Leverage iOS 5's new Twitter APIs, which supply painless Twitter and OAuth help utilizing the hot bills framework. Use position providers to include new iOS five good points, corresponding to opposite geolocation look up and quarter notifications. contain wealthy media into  your apps utilizing pictures, Animation, Audio, Video, and post-processing picture filters and research via center picture. ultimately, discover Newsstand, which allows you to create your personal periodical content material and push new content material to units, even if the app isn't really running.

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Extra info for iOS 5 Core Frameworks: Develop and Design: Working with graphics, location, iCloud, and more

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In the next chapter, we’ll discuss how to move Core Data to the cloud by using new APIs available in iOS to automatically sync persistent stores across multiple devices and platforms. com/download#chapter-2 Wrapping Up 49 3 iCloud Technically, iCloud is not a framework. At its broadest definition, iCloud is a s­ ervice offering centralized storage and sync management across multiple devices and platforms. In June 2011 when Steve Jobs announced iOS 5 at WWDC in San Francisco, CA, the cornerstone of that announcement was iCloud.

Until you commit the changes by calling save on the context, your persistent file is not modified. Finally, to optimize performance, Core Data on iOS does not include an undo manager by default. Before you can use the automated undo and redo support of the managed object context, you must allocate and set an NSUndoManager object to that context. In the next chapter, we’ll discuss how to move Core Data to the cloud by using new APIs available in iOS to automatically sync persistent stores across multiple devices and platforms.

ManagedObjectContext save:&error]) 26 NSLog(@”There was an error”); The setup to this fetch request is similar as before. This time, however, we define an NSPredicate for the request to limit our search results (line 10). In this example, we have an NSString for the name of the issue we want. In line 11 we create our predicate accordingly and set it to the request. Next, in line 15 after executing the fetch request on our context, we check to see if we have any results in line 18. Interacting with Core Data 43 If the fetch request returned results based on our predicate, the fetchResults array count will be greater than zero and the if-statement in line 18 will evaluate to true.

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