Forcing entry of certain character types in UITextField

Posted by cannyboy on Stack Overflow See other posts from Stack Overflow or by cannyboy
Published on 2010-06-09T12:57:01Z Indexed on 2010/06/09 13:12 UTC
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Filed under:

iphone

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objective-c

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uitextfield

If I have a UITextField which the user is inputing a registration number, which has the format: 11-11-1111

(that is 2 digits, a dash, 2 digits, a dash, four digits)

How do I force the user to enter this kind of data only... so they can't enter anything except 0-9 in the first character, and only '-' for the third character etc.

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