for (id view in self.view.subviews)
{
if ([view isKindOfClass:[UITextField class]])
UITextField* textField = (UITextField*)view;
[textField resignFirstResponder];
}
遍历UIView的子类,布布扣,bubuko.com
遍历UIView的子类
原文：http://www.cnblogs.com/guatiantian/p/3823007.html
