By Bill Dudney
ISBN-10: 1934356255
ISBN-13: 9781934356258
This booklet is lovely strong, it begins nice, rather nice. yet in a short time the publication starts off to is going off the rails.
General instance. you are following alongside the textual content, and with detective paintings you have got crammed in might small gaps which they do not point out. you see they did not point out whatever within the worst manner attainable. you need to discover through the functionality they point out within the textual content, and seeing which example variables they've got in it that you just have been by no means informed to create.
It's now not that they are announcing, subsequent we made a few XIB documents and tied them to UIViewControlers named X, Y.
I suggest they actually commence referencing customized periods they by no means pointed out earlier than, in a functionality they paste into the books text.
Let me provide you with a concrete example:
CoreData bankruptcy, you are going alongside and filling within the gaps. then you definately get to the Navigation subsection of CoreData, and abruptly they are referencing no longer one yet new UIViewControllers ( whole with customized XIB documents! ), that they by no means pointed out prior to.
How do you discover out approximately it? good it really is within the functionality you are typing into your editor as you learn the ebook.
No point out what so ever!
--
They seek advice from the downloadable resource documents for the sections of code, although these xcode tasks are essentially entire types. So for those who learn it, you cannot inform what you are alleged to have via now that they did not point out, and what comes later so that you can now not copy.
Good ebook with first rate details, yet i believe they ran out of paper and clients are left to wager their means via rather than having the ability to concentrate on the teachings.
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Additional resources for iPhone SDK Development (The Pragmatic Programmers)
Sample text
Since you declared only one IBAction, it’s your only choice here: sayHello:. This completes the wire-up of outlets and connections in Interface Builder. To keep things clean, you might want to set the label’s title to an empty string so the application doesn’t say “Label” when it launches. You’re now done with IB and can save and quit. Again, you could also see the list of connections with the Connections inspector. As a shortcut, Ctrl+dragging from a button to a receiver object connects the Touch Up Inside event without even bringing up the list of events.
If you have C primitives, you can pass them around Cocoa with the wrapper classes NSData and NSMutableData, which wrap a byte buffer, and NSNumber, an object container for any of C’s scalar (numeric) types, such as int, float, or bool. Cocoa has a few more specific data classes, including NSURL for URLs (including file://-style URLs representing items on the local filesystem, though you often use NSString paths too), and timekeeping classes such as NSDate and NSTimeZone. The “Touch” part of Cocoa Touch is largely represented by the UIKit framework, also imported by default in every iPhone application.
We’ll use special keywords when we declare variables that refer to objects in the nib and when we declare methods to be called from events in the user interface, such as button taps. A reference from code to an object in the nib is called an outlet and is designated with the keyword IBOutlet. Similarly, a method that you want a nib’s objects to be able to call is an action and is designated with the keyword IBAction. Typically, you declare outlets and actions in code so that IB will be able to use them.
iPhone SDK Development (The Pragmatic Programmers) by Bill Dudney
by Jason
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