Errata for iPhone SDK Development

#38815: in the .mobi version of this file (approximately location 620 on a Kindle), the 2nd graphic on PDF page 52 is 90% blank, with the real graphic taking up only a fraction of the page. Even zooming it results in a graphic that is too small to read.--Avram Dorfman

#41990: In this example, we are linking the view in a xib file that we created ourselves for the first time. The oh-so-important line of text that tells the learner to make this connection is the last line of the 2nd paragraph. For people new to iPhone/Cocoa programming this is a HUGE deal and yet, it's given ONE line, one that could easily be missed.

I recommend expanding this line into a paragraph and bolding the text that tells the learner to hook this up. If it's missed, it will create headaches galore. If it's misunderstood, it's a big hole in the learner's mental picture of how all the pieces are fitting together.--Elisabeth Robson

#41992: I suggest clarifying at the bottom of the page that the *title* text field should be configured to capitalize words. The box office gross is a number so it doesn't matter, and the summary should be configured to capitalize sentences. So it's really only the title that should have this configuration. Some clarity here would be helpful.--Elisabeth Robson

#42264: Second paragraph ends with:

"The delegate adds the view defined by the tabBarController onto the window. Here is the code:

- (void)applicationDidFinishLaunching:(UIApplication *)application {
[window addSubview:tabBarController.view];
[self createData];
}

This code is straightforward; we just ask the tab controller. . ."

This is confusing to me as a newbie to iPhone programming. The default value in the file that was created for me by Xcode is:

<<
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

// Add the tab bar controller's current view as a subview of the window
[window addSubview:tabBarController.view];
[window makeKeyAndVisible];

return YES;
}

>>

So now I'm confused about which one I need -- I'm moving ahead just adding the one you have in the book, but it would help to know that the exisitng one is ok too...
--Dave Colburn

#42265: Page starts with:
<<der of the data for the other states is created in the same way and added
to the same data array but not shown.1

NSMutableArray *data = [NSMutableArray array];
[data addObject:[NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithInt:36553215], @"population" ,
@"California" , @"name" ,
[NSNumber numberWithInt:163770], @"area" , nil]];

After you create all the test data, you then need to set the states property
to the array you have just created. The code should look like this:
self.states = [NSArray arrayWithArray:data];
>>

<grrr> How 'bout consistency here??? I'm ok with you bending the paradigm of "here's the code, type it in" with regards to showing all the states (SUGGESTION: please use more than a footnote to indicate that you've bent the paradigm),

BUT, the last use of the code snippet
self.states = [NSArray arrayWithArray:data];

is breaking, not bending the paradigm. SUGGESTION: be very explicit about this one and tell us it's a code snippet you're showing...
--Dave Colburn

#41842: In loadprefs function, userTimeZone is assigned return value of method 'stringForKey' which is not alloc, new and copy but is released after simple assignment without retain call.

I think there should be some explanation about what happens behind the code. --Suhku Huh

#42256: This is a suggestion for the next edition: I was very disappointed on page 229 to read paragraph "Since the mechanics of navigation...". I understand you don't need to cover all the details again, but having at least some big picture view of what the reader needs to do to go from the point at the beginning of the page to where they can successfully follow along starting at the bottom of the page would be really great. At the current moment, I'm completely stuck, because I don't know what pieces I'm missing, nor do I know whether I should be creating the views using IB or via code... etc. Lots of question in my mind. A couple of images and list of steps, taking up a page or less would give me everything I need to succeed with this chapter. As it stands now, I feel like a failure because I'm not going to be able to follow along for the rest of the chapter :(--Elisabeth Robson