iPhone: -[UIView presentModalViewController:animated] Argument Error

Question

Hey

When I run my application it shows one warning message:

warning:passing argument 1 of 'presentModalViewController:animated'
from distinct objective - c type

How do I resolve this warning? I've used presentModalViewController:animated many times previously in my application.

Please help me.

Thanks in advance

Answer 1

That method expects it's first argument to be of type UIViewController *. What's likely happening is that you're either passing the wrong object to that method, or you haven't imported the header file for your custom view controllers in the file in which you're calling that method.

Answer 2

Your problem is that you've defined the view controller you're passing like:

UIViewController myViewController=... // <= you've defined it as the struct that defines a class

(note the missing asterisk) instead of:

UIViewController *myViewController=... // <= defined as a pointer to the memory address of an instance.