Question

I have an NSObject set up to control various elements on my screen.

I initialize the class inside my View Controller like this:

self.pageSetupClass = [[PageSetup alloc] set:self.pageID];

In IB I have added my NSObject object and linked a button to an IBOutlet on it. I’ve also linked it to an IBAction found in the object. When I click this button the app crashes and I get this error:

2010-09-23 15:33:11.640 BookTest10[49139:207] *** -[NSCFDictionary clickSoundByte:]: unrecognized selector sent to instance 0x4b10bc0
2010-09-23 15:33:11.641 BookTest10[49139:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSCFDictionary clickSoundByte:]: unrecognized selector sent to instance 0x4b10bc0'
2010-09-23 15:33:11.642 BookTest10[49139:207] Stack: (
    42195024,
    43352876,
    42203739,
    41666166,
    41662962,
    2915566,
    3413054,
    3422400,
    3417197,
    3042792,
    2934339,
    2965976,
    51188092,
    41474204,
    41470120,
    51181725,
    51181922,
    2958194
)
terminate called after throwing an instance of 'NSException'

There is nothing in the function at the moment so it must be the calling that crashes it…right?

If you need me to post more code I certainly can. If you have any ideas I’m all ears. Thank You

Edit:

This is the contents of the function set called out when I initialize the PageSetup object:

-(PageSetup*) set:(int) i {
    self = [super init];
    if(self) {
        self.iD=i;

        self.pageSetupFile = [[NSBundle mainBundle] pathForResource:@"PageSetup" ofType:@"plist"];
        self.pageSetupArray = [[NSMutableArray alloc] initWithContentsOfFile:self.pageSetupFile];
        self.pageInfo = [self.pageSetupArray objectAtIndex:self.iD];

        [self initializeSoundBytes];
        [self initializeAnimations];
        [self initializeToys];

        NSLog(@"Page Setup Initializing: %@", self.pageInfo);
        return self;
    }
    return self;
}

Another Edit:

I set my set function to return (void) and no longer initialize it using init.

I now receive this error message:

2010-09-23 17:10:05.096 BookTest10[50519:207] *** -[UITouch clickSoundByte:]: unrecognized selector sent to instance 0x4b1b580
2010-09-23 17:10:05.097 BookTest10[50519:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[UITouch clickSoundByte:]: unrecognized selector sent to instance 0x4b1b580'
2010-09-23 17:10:05.099 BookTest10[50519:207] Stack: (
    42166352,
    43324204,
    42175067,
    41637494,
    41634290,
    2886894,
    3384382,
    3393728,
    3388525,
    3014120,
    2905667,
    2937304,
    51159420,
    41445532,
    41441448,
    51153053,
    51153250,
    2929522
)
terminate called after throwing an instance of 'NSException'

Final Edit:

I had forgotten to connect my NSObject to the File’s Owner in IB.

Answer 1

self.pageSetupClass = [[PageSetup alloc] set:self.pageID];

What does set: return? Is that a method of your PageSetup class? Does it return self?
Because apparently you’re assigning pageSetupClass to whatever set: returns…
Unless set: returns self, you should try this:

self.pageSetupClass = [[PageSetup alloc] init];
[self.pageSetupClass set:self.pageID];

Edit:

ok, if you added the object in IB, the object was already instantiated for you when you loaded the nib, and the IBAction and IBOutlet connections have already been made.
When you do self.pageSetupClass = ..., you’re setting pageSetupClass to a new instance, and that probably leaves the button with a bad target for its IBAction.
If the object was instantiated from the nib, and you have a reference to it in pageSetupClass from a IBOutlet, then just set whatever you want in the object, no need to alloc a new one.