Objective-C Protocol Template

MyDelegateClass.h

/**
 * MyDelegateClass.h
 */

#import <Foundation/Foundation.h>

@protocol MyDelegate;
@interface MyDelegateClass : NSObject {
    id <MyDelegate>_delegate;
}

@property (nonatomic, assign) id <MyDelegate>_delegate;
- (void)someMethod;
@end

@protocol MyDelegate <NSObject>
@optional
- (void)doSomething;
@end


/**
 * MyDelegateClass.m
 */
#import "MyDelegateClass.h"

@implementation MyDelegateClass
@synthesize _delegate;

- (void)someMethod {
    // Call DelegateMethod
    if ([_delegate respondsToSelector:@selector(doSomething)]) {
        [_delegate performSelector:@selector(doSomething)];
    }
}

@end




/**
 * ClientViewController.h
 */
#import "MyDelegateClass.h"

@interface ClientViewController : UIViewController <MyDelegate> {
}

@end


/**
 * ClientViewController.m
 */
#import "ClientViewController.h"

@implementation AccountsViewController

#pragma mark - MyDelegate DelegateMethods
- (void)doSomething {
}

@end