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objective c - How to convert NSNumber to NSString

So I have an NSArray "myArray" with NSNumbers and NSStrings. I need them in another UIView so i go like this:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

DetailViewController *details = [[DetailViewController alloc] initWithNibName:@"DetailView" bundle:nil];
details.subjectText = [[myArray objectAtIndex:indexPath.row] objectForKey:@"subject"];

The subjectText works. But how can I get the NSNumbers out of it? (I actually need them as strings...) I would convert a NSString out of a NSNumber like this: NSString *blah = [NSNumber intValue]. But I don't know how to set it up in the code above...

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Try:

NSString *myString = [NSNumber stringValue];

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