macOS Error with initWithObjects

[trey5498]

I need to know what is the error with this:

header file:

NSArray *arrSelections1;


.m file:

-(id) init
{
	
	if ([super init]) {
		arrSelections1 = [[NSArray alloc] initWithObjects: cse211djq, arc118djq, cse211clq, arc118clq, hubatlabclq, nrng514clq, wei408clq, tur2215clq, arcatlabbwq, b105110bwq, cse211bwq, hubatlabbwq, lawpclabbwq, lbw3radbwq, nrnatlabbwq, tur2215bwq, weiatlabbwq, nil];
			
	}
	return self;
}
-(void) dealloc
{

	[arrSelections1 release];
	
}


- (IBAction)selectall:(id)sender 
{
	for(NSButton *button1 in arrSelections1) [button1 setState:NSOnState];
	NSLog(@"%@", [arrSelections1 objectAtIndex: 5]);
}

error: 2008-07-16 11:03:39.403 Circa Printer Installer[6435:10b] *** -[NSCFArray objectAtIndex:]: index (5) beyond bounds (0)

why it is not initializing and this is an array of buttons.

 

[HiRez]

I'm not sure how that even compiled because you're missing a semicolon after your array declaration. Also you should be calling [super dealloc]; at the end of your dealloc method.

If those objects are NSButtons you created in a nib/.xib (Interface Builder), they won't be valid in init, you'd have to put any code that works with them in awakeFromNib: instead, where they will be valid.

 

[trey5498]

the ";" is there I just forgot to translate it to the forums? Know where the error comes from?

 

[trey5498]

just reread your post and that was it.

Thank you.

 

[yoavcs]

Your NSButtons aren't yet initialized, therefore nil, so your array declaration in the -init method is basically like a [[NSArray alloc] initWithObjects:nil] therefore the array bounds are 0 and not 5.

If you created those buttons and your custom class in the nib they won't be initialized when your -init method gets called.

Move the creation of the array to the awakeFromNib: method.