Cell identifier not found when the UITableVC is contained in another VC

Question

I'm trying to create a table view with some custom cells, but I have a problem. Everything is setup correctly and when I use this UITableVC as the initial VC it all works. But when I try to add it as a child VC to another VC, I get this error:

Assertion failure in -[UITableView dequeueReusableCellWithIdentifier:forIndexPath:], /SourceCache/UIKit_Sim/UIKit-2372/UITableView.m:4460
2013-02-05 18:37:25.704 SalesBot[16284:c07] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'unable to dequeue a cell with identifier Statement Cell - must register a nib or a class for the identifier or connect a prototype cell in a storyboard'

I'm not changing anything else, I'm just moving the arrow in the storyboard to another VC to make it initial.

Here is how I'm adding the UITableVC subclass as a child to another VC:

self.statementTableViewController = [[SBStatementTableViewController alloc] init];
[self.view addSubview:self.statementTableViewController.view];
[self.statementTableViewController.view setFrame:self.contentFrame];

And here is how I dequeue a cell:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Statement Cell";
    SBStatementCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];

    // Configure the cell...

    return cell;
}

I understand the above code is iOS6 only, I will worry about iOS 5 later :)

I'm guessing that the cell identifiers are somehow not "global" and the tableVC can't see them when it's a child to another VC?

Please help and let me know if you need to see some more code!

Can you post the code where you initialize the cell? It should look something like UITableViewCell *cell = [tableview deque...etc — Max, Feb 05 '13 at 16:48

score 0 · Accepted Answer · edited May 23 '17 at 12:12

0

Even though you have yet to follow up with your code, I'm willing to bet this is your issue.

Taken from: Assertion failure in dequeueReusableCellWithIdentifier:forIndexPath:

You're using the dequeueReusableCellWithIdentifier:forIndexPath: method. The documentation for that method says this:

Important: You must register a class or nib file using the 
registerNib:forCellReuseIdentifier: or registerClass:forCellReuseIdentifier:
method before calling this method.

You didn't register a nib or a class for the reuse identifier "Cell".

Looking at your code, you seem to expect the dequeue method to return nil if it doesn't have a cell to give you. You need to use the dequeueReusableCellWithIdentifier: for that behavior:

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

Notice that dequeueReusableCellWithIdentifier: and dequeueReusableCellWithIdentifier:forIndexPath: are different methods.

edited May 23 '17 at 12:12

Community

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answered Feb 05 '13 at 16:59

Max

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I have noticed that, dequeueReusableCellWithIdentifier:forIndexPath: is iOS 6+ only. I will try to make the suggested changes and see what happens. In the meantime, why am I not getting this error when the table VC is not a child of another VC? (when it's the initial VC) – Nikolay Dyankov Feb 05 '13 at 17:26
@NikolayDyankov I admittedly have no idea why it would work as the parent viewcontroller. – Max Feb 05 '13 at 17:46
That was the essence of my question :) – Nikolay Dyankov Feb 05 '13 at 17:48
I added registerClass:forCellReuseIdentifier: and it doesn't crash anymore, BUT - when the tableVC is a child I can't set any values for the labels in the cells. Works fine when the table VC is the initial VC. – Nikolay Dyankov Feb 05 '13 at 17:49
@NikolayDyankov Strange. I wonder if there's something else going on in the code that's causing that? Either way, I think your safest bet is to use dequeueReusableCellWithIdentifier: and check for the null cell. That way its supported in iOS 6 and below. – Max Feb 05 '13 at 21:03
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I ended up slapping a UITableView instead of a child UITableVC and just implemented the protocols. Working so far... (fingers crossed) – Nikolay Dyankov Feb 05 '13 at 21:04

Cell identifier not found when the UITableVC is contained in another VC

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