自作delegateメソッドの作り方 ref: http://qiita.com/items/d848e0756e15613e41c6

MyClass.h

@class MyClass;

@protocol MyClassDelegate

@optional
-(void)optionDelegateMethod:(MyClass*)myClass;

@required
-(void)requiredDelegateMethod:(MyClass*)myClass;

@end


@interface MyClass : NSObject
@property id <MyClassDelegate> delegate;
@end

MyClass.m

-(void)MyClassMethod{
    [self.delegate requireDelegateMethod:self];
}

SomeViewController.h

@interface SomeViewController : UIViewController <MyClassDelegate>{
    MyClass *myClass;
}

SomeViewController.m

-(void)requiredDelegateMethod:(MyClass*)myClass{
    NSLog(@"requireDelegateMethod");
}