Replace tab in NSString with \t

I'm parsing json with SBJson.

I receive an error "-JSONValue failed. Error is: Unescaped control character [0x09]" when parsing my json string, it has unen开发者_运维技巧coded tab. How to replace this tab in my json string to \t? If i remove tab manualy, everything is good. Or how to encode this tab properly?

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You can use stringByReplacingOccurrencesOfString:withString::

NSString * newJsonString = [oldJsonString stringByReplacingOccurrencesOfString:@"\t" withString:@"\\t"];