Chapter 3: UsingViews

Charlie Lesoine · August 9th, 2011, 08:34 PM

I have started working through the book and have encountered a problem. On Page 49 it instructs us to create a new view based Application and name it UsingViews and then in the UsingViewsViewController.m add the following code to the viewDidLoad method:

UIAlertView *alert = [[UIAlertView alloc]
initWithTitle:@"Hello"
message:@"This is an alert view"
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
[alert release];

Then it says to run the simulator and an alert window will popup. Except, when I run the simulator, the app launches and nothing happens. There is no alert window, it just shows a grey screen with the status bar on the top showing battery life and cell reception...Anyone have an idea as to what I might be doing wrong? Should I upgrade to Xcode 4? I am a complete noob.

thepianoguy · August 10th, 2011, 07:56 AM

Are you getting any warnings in the console?
Copy and paste your code from your implementation file (â¦Controller.m) into a reply and/or send your project to
[email protected]

and your omission/error should be easy to find.

Bob

Charlie Lesoine · August 10th, 2011, 10:08 AM

No there were no errors when I launched the simulator. Here is the code:

Code:

/*
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
	UIAlertView *alert = [[UIAlertView alloc]
							initWithTitle:@"Hello"
							      message:@"This is an alert view"
							     delegate:self
						cancelButtonTitle:@"OK"
						otherButtonTitles:nil];
	[alert show];
	[alert release];   
    [super viewDidLoad];
}
*/

briomusic · August 20th, 2011, 02:55 AM

you're viewDidLoad method is not active because it is 'commented out'.
this is due to the

Code:

/*

at the top and the

Code:

*/

at the bottom of your code. remove both of those and run again. while doing so you will be able to observe the code in question not being colored green anymore. green is xcode's color for comments which are ignored by the compiler.

DavidTrx · October 3rd, 2011, 03:08 PM

I am having a problem with the same problem. Execution is aborted with this message [only initial part of message shown]

2011-10-03 15:04:59.104 UsingViews[3580:b303] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[UIViewController _loadViewFromNibNamed:bundle:] loaded the "UsingViewsViewController" nib but the view outlet was not set.'