This will remove white space from both ends of a string:

NSString *newString = [oldString stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceCharacterSet]];

The whitespaceCharacterSet consists of spaces and tabs. If you want to also remove newlines from the string, use the whitespaceAndNewlineCharacterSet:

NSString *newString = [oldString stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];

Additional References

• NSString Class Reference
• NSCharacterSet Class Reference

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