坐标转换
CGRect frame = [ sender.superview convertRect:sender.frame toView:self.view];
or
CGRect frame = [sender convertRect:sender.bounds toView:self.view];
坐标转换
CGRect frame = [ sender.superview convertRect:sender.frame toView:self.view];
or
CGRect frame = [sender convertRect:sender.bounds toView:self.view];