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POTrouble Adding Object To NSMutableArray in For Loop
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  1. POTrouble Adding Object To NSMutableArray in For Loop
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    copied!<p>I'm having some trouble adding an object to an NSMutableArray in a for loop. When I try it, I get an error:</p> <blockquote> <p><em>*</em> Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[__NSCFArray insertObject:atIndex:]: mutating method sent to immutable object' Blockquote</p> </blockquote> <p>I've looked at other questions very similar to this and they are solved because the array was immutable or they were reading off NSUserDefaults, however I am doing neither of those things.</p> <p>I download some JSON and parse it using NSJSONSelialization, and the idea is that I have an almost twitter-like stream of activity coming down from the top of the UITableView. Here's my code:</p> <pre><code>-(void)connectionDidFinishLoading:(NSURLConnection *)connection{ if (isDownloadingFirstTime){ isDownloadingFirstTime = NO; dataArray = [Methods parseJSONDataWithData:data]; [mainTableView reloadData]; } else{ [refreshControl endRefreshing]; NSArray *tempArray = [Methods parseJSONDataWithData:data]; for (int num = 0; num &lt; tempArray.count; num++){ [dataArray addObject:[tempArray objectAtIndex:num]]; NSArray *indexPathArray = [NSArray arrayWithObject:[NSIndexPath indexPathForRow:0 inSection:0]]; [mainTableView beginUpdates]; [mainTableView insertRowsAtIndexPaths:indexPathArray withRowAnimation:UITableViewRowAnimationTop]; [mainTableView endUpdates]; } } data = [NSMutableData data]; } </code></pre> <p>I get the exception on the first line of the for loop, when I try to addObject:</p> <p>I in no way am using NSUserDefaults in this class and I'm 100% sure that dataArray is an NSMutableArray.</p> <p>Any help or advice is appreciated!</p>
 

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