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iOS five was once one of many largest enhancements to iOS up to now, and has a ton of outstanding good points that you’ll certainly are looking to commence utilizing on your apps. the single challenge is, there’s now not a ton of documentation or pattern code at the APIs, so they’re frequently rather demanding to learn!
This is the place iOS five by way of Tutorials is available in! The aim of the e-book is to aid intermediate and complicated iOS builders get up-to-speed with the APIs brought in iOS five within the fastest and simplest way – through tutorials!
Updated for iOS 6. This new moment variation is totally up to date with iOS 6 and Xcode 4.5. even supposing the ebook specializes in APIs brought in iOS five, the chapters were up to date to paintings on iOS 6, use sleek goal C syntax, and more.
This ebook is for intermediate or complicated iOS builders, who already recognize the fundamentals of iOS improvement yet are looking to improve their abilities to iOS 5.
iOS five via Tutorials quantity 1 covers the subsequent APIs:
- ARC: the right way to effectively migrate to ARC – and fear much much less approximately reminiscence administration.
- Storyboards: methods to make your apps extra quick with the hot Storyboards function.
- iCloud: how one can shop your app’s info within the cloud and proportion throughout units.
- GLKit: find out how to use GLKit to make OpenGL ES 2.0 programming a lot easier.
- UIKit Customization: easy methods to thoroughly customise the feel and appear of your apps.
The iOS educational group takes delight in ensuring every one instructional we write holds to the top criteria of caliber. we need our tutorials to be good written, effortless to persist with, and enjoyable. And we don’t are looking to simply skim the outside of a topic – we wish to particularly dig into it, so that you can actually know how it really works and observe the information at once on your personal apps.
By the time you’re comprehensive interpreting this publication, your talents should be thoroughly brand new with iOS five, and you’ll have the ability to use those new applied sciences instantly on your apps!
Read or Download iOS 5 by Tutorials: Volumes 1 and 2 PDF
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I used to be very pissed off with my buy and that i used to be considering to put in writing a overview out of frustration. besides the fact that, after i have obvious the 5-star experiences from different clients, i could not think my eyes. One evaluate was once raving in regards to the code samples (absolutely ridiculous) after which I observed another reader leaving a remark for the overview asserting that he is been engaged on the pattern code for weeks and nonetheless could not make it paintings and that i can relate to that.
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Additional info for iOS 5 by Tutorials: Volumes 1 and 2
The compiler gives several errors: • ARC Casting Rules: Cast of C pointer type 'CFStringRef' (aka 'const struct __CFString *') to Objective-C pointer type 'NSString *' requires a bridged cast • Semantic Issue: 'autorelease' is unavailable: not available in automatic reference counting mode • ARC Restrictions: ARC forbids explicit message send of 'autorelease' The last two errors are really the same and simply mean that you cannot call [autorelease]. Let’s get rid of that statement first. com Page 53 iOS 5 by Tutorials Chapter 2: Beginning ARC } The remaining error has to do with a cast that apparently should be “bridged”.
The call to CFRelease() is properly balanced by CFBridgingRetain(). If you had used __bridge in this example, then the app would likely crash. ARC might deallocate the string object before the Core Foundation code is done with it. I doubt you’ll need to use this particular bridge type often. Off the top of my head, I can’t think of a single API that is commonly used that requires this. It is unlikely that you have a lot of Core Foundation code in your apps anyway. Most frameworks that you’ll use are Objective-C, with the exception of Core Graphics (which doesn’t have any toll-free bridged types), the Address Book, and the occasional low-level function.
We want ARC to stay the owner of this variable but we also want to temporarily treat it as a CFStringRef. For this type of situation, the __bridge specifier is used. com Page 55 iOS 5 by Tutorials Chapter 2: Beginning ARC tells ARC that no change in ownership is taking place and that it should release the object using the normal rules. m: OSStatus error = AudioServicesCreateSystemSoundID( (__bridge CFURLRef) fileURL, &theSoundID); The exact same situation applies there. The fileURL variable contains an NSURL object and is managed by ARC.