CODEWITHSUNDEEP
iphoneuitableviewloadview
William Jockusch
William Jockusch

Reputation: 27295

overriding loadView in a UITableViewController subclass

I am trying to setup a UITableViewController so that its tableView belongs to my custom subclass. My loadView method currently looks like this:

- (void) loadView {
   MyTableViewSubclass* tv = [[[MyTableViewSubclass alloc]initWithFrame: CGRectZero style: UITableViewStylePlain]autorelease];
   self.view = tv;
   self.tableView = tv;
}

I am getting crashes later on that go away if I comment out the above method. So something is missing. But what?

Apple's documentation says I should not be calling super in loadView. Which makes sense, because I want the view to have my class, not theirs.

Things I've tried that don't help:

One thing I've tried that does fix the problem, but defeats the purpose:

EDIT: the crash is shown below. It happens after the user does some input. It also happens the same way if I am creating a plain UITableView instead of my subclass. There is a lot going on in the app, and something in my loadView override [or more likely, something missing from my override] is causing the state to be different, which in turn leads to the crash. But I don't see a good way to track what is different.

2011-09-08 12:44:59.591 MyAppName[97649:207] *** Terminating app due to uncaught exception 'NSRangeException', reason: '-[MyTableViewSubclass scrollToRowAtIndexPath:atScrollPosition:animated:]: row (0) beyond bounds (0) for section (0).'

Upvotes: 6

Views: 4304

Answers (2)

AgentK
AgentK

Reputation: 685

William's answer help me over the last hurdle too.

To add a swift example, the pattern I commonly use is:

class SomeTableViewController: UITableViewController {

    private var childView: SomeTableView! { return tableView as! SomeTableView }

    override func loadView() {
        tableView = SomeTableView(frame: UIScreen.mainScreen().bounds, style: .Plain)
        tableView.delegate = self
        tableView.dataSource = self
        view = tableView
    }

}

You are then free to refer to the customised view as childView in other places in the ViewController.

Upvotes: 2

William Jockusch
William Jockusch

Reputation: 27295

Turns out I need to set the dataSource and delegate of my tableView as a part of loading. So when I do this, everything works fine:

- (void) loadView {
   MyTableViewSubclass* tv = [[[MyTableViewSubclass alloc]initWithFrame: CGRectZero style: UITableViewStylePlain]autorelease];
   tv.dataSource = self;
   tv.delegate = self;
   self.view = tv;
   self.tableView = tv;
}

Upvotes: 12

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