Iphone UITextField only integer

Question

I have a UITextField in my IB and I want to check out if the user entered only numbers (no char)and get the integer value.

I get the integer value of the UITextField

Answer 1

http://rosettacode.org/wiki/Determine_if_a_string_is_numeric#Objective-C

Or you could ensure that only the numeric keyboard appears when the focus comes on the field