Question

I’m trying to create a sectioned table. I’ve got two parsed NSMutableArrays feedsTopics and feedsSchools who reside in my mainAppDelegate.

In my tableViewController, I create an appDelegate representing my app’s delegate:

appDelegate = (mainAppDelegate *)[[UIApplication sharedApplication] delegate];

I’m trying to declare topics and schools as arrays like so (which is an ERROR that reads, “No known class method for selector ‘appDelegate'”, just saying that’s what I’ve gotten to):

NSArray *topics = [[NSArray appDelegate] feedsTopics];

which I want to add as a dictionary object to NSMutableArray listOfItems like so (this has an error saying it “expects an identifier”):

NSDictionary *topicsDict = [NSDictionary dictionaryWithObject:appDelegate.feedsTopics forKey:[@"News by Topic"];

What am I doing wrong here?

Answer 1

The first error is caused by calling a appDelegate method of NSArray – this does not exist. The second error is caused by a misplaced [.

Your code should look like this:

NSArray *topics = [appDelegate feedsTopics];

and

NSDictionary *topicsDict = [NSDictionary dictionaryWithObject:topics forKey:@"News by Topic"];

By the way: Your errors do not relate to tableViews at all. I’d suggest to edit the title of this question.