iPad popover textfield - resignFirstResponder doesn't dismiss keyboard

Question

I have two text fields email and password. The following code works fine when the fields are presented on a regular view but when they are on a popover, the resignFirstResponder

Answer 1

I was also having this problem. But I solved this by making a another control, which is not in the popover as firstResponder and later a resigned it from there. But I don't what is the problem with popover.