How do I create delegates in Objective-C?

Question

I know how delegates work, and I know how I can use them.

But how do I create them?

Answer 1

ViewController.h

@protocol NameDelegate 

-(void)delegateMEthod: (ArgType) arg;

@end

@property id  delegate;

ViewController.m

[self.delegate delegateMEthod: argument];

MainViewController.m

ViewController viewController = [ViewController new];
viewController.delegate = self;

Method:

-(void)delegateMEthod: (ArgType) arg{
}