NSUnknownKeyException setValue:forUndefinedKey: [duplicate]

StackOverflow https://stackoverflow.com/questions/10828608

Question

Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key buttonOfFirstView.'

Why do I get this error? I am trying to make a table cell though XIB. After I add this code it throws the above exception.

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

    static NSString *CellIdentifier = @"MyCell";

    MyTableViewCell *cell = (MyTableViewCell*) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil) {

        NSArray *arrayCellXib = [[NSBundle mainBundle] loadNibNamed:@"MyTableViewCell" 
                                                              owner:self 
                                                            options:nil];

....
} 
.....

return cell;
}

How to resolve it?

Was it helpful?

Solution

Check your references of your outlets in your XIB, one of them is probably referencing a property (buttonOfFirstView) that does not exist anymore

OTHER TIPS

Set File's Owner class to NSObject and set UITableViewCell class to your custom class in XIB. It will solve the issue.

This is exactly an issue related to the key buttonOfFirstView in your case.If it is a button it may be connected wrongly in any of your xibs

Quit the iOS simulator. Make sure you save the project and then quit xCode and restart and everything will be fine. I did that and it worked for me. that's if everything else is hooked up correctly.

you need to clean your project: go to Product -> Clean

this works for me

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