IOS: error in HomeDirectory

Question

I have this code

NSString *nextSequentialFile =
    [filePath stringByReplacingOccurrencesOfString:photoNumber
    withString:[NSString stringWithFormat:@"%d", (index + 1)]
    options:NSBackwardsSearch
    range:[filePath rangeOfString:photoNumber options:NSBackwardsSearch]];

but I have this error and I don't understand beacuse it happens.

Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSCFString replaceOccurrencesOfString:withString:options:range:]: Range or index out of bounds'

Answer 1

Try:

NSString *nextSequentialFile =
[filePath stringByReplacingOccurrencesOfString:photoNumber
withString:[NSString stringWithFormat:@"%d", (index + 1)]
options:NSBackwardsSearch
range:NSMakeRange(0, filePath.length)];