CODEWITHSUNDEEP
objective-cuitableviewios5.1
Chase Roberts
Chase Roberts

Reputation: 9376

iOS 5.1 dequeueReusableCellWithIdentifier throws NSInvalidArgument exception

I have an app that has been working great on iOS6.1. Today I realized I should probably try to make this compatible for iOS5 as well. I tried running it on the iOS 5 simulator and am getting an exception thrown on my dequeCell method call. I can't figure out why as it works wonderfully on iOS6. Anyone else come across this problem?

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = //throws exception here
     [tableView dequeueReusableCellWithIdentifier:CellIdentifier 
                                     forIndexPath:indexPath];
    cell.accessoryView = nil;
    cell.backgroundColor = [UIColor colorWithRed:.97 
                                           green:.97 
                                            blue:.97 
                                           alpha:1];
    cell.textLabel.textColor = [UIColor blackColor];
    cell.textLabel.backgroundColor = [UIColor clearColor];
    cell.selectionStyle = UITableViewCellSelectionStyleBlue;
    ...
    return cell;
}

-[UITableView dequeueReusableCellWithIdentifier:forIndexPath:]: unrecognized 
 selector sent to instance 0x8a3a000 -*** Terminating app due to uncaught 
 exception 'NSInvalidArgumentException', reason: '-[UITableView 
 dequeueReusableCellWithIdentifier:forIndexPath:]: unrecognized selector 
 sent to instance 0x8a3a000'

Upvotes: 0

Views: 1836

Answers (2)

Joshua Lieberman
Joshua Lieberman

Reputation: 112

@Chase, I ran into the same problem set today as well when trying to make my app compatible with iOS 5.1.

A way I got my buttons to work is to utilize a Gesture Recognizer and in the tapDetected delegate method that you implement, query which button you want and call it directly in the code.
Register the Recognizer in your ViewDidLoad

UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapDetected:)];
tapRecognizer.numberOfTapsRequired = 1;
tapRecognizer.delegate = self;
[self.view addGestureRecognizer:tapRecognizer];


    - (void)tapDetected:(UIGestureRecognizer*)tap{
NSArray *versionCompatibility = [[UIDevice currentDevice].systemVersion componentsSeparatedByString:@"."];
if ( 6 == [[versionCompatibility objectAtIndex:0] intValue] ) {
    [self.view endEditing:YES];
} else {
    if (CGRectContainsPoint(self.createSessionButton.frame, [tap locationInView:self.view])) {
        [self.view endEditing:YES];
        [self createNewSession:nil];
    }
   }

}

The reason the iOS check is there is because in ios 6 this is not an issue. Sorry for bad formatting, still new to posting here.

Upvotes: 1

J_D
J_D

Reputation: 3586

To my knowledge, the method dequeueReusableCellWithIdentifier:forIndexPath: was added in iOS 6.0 only.

Better use dequeueReusableCellWithIdentifier:

Upvotes: 7

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