Super simple block-based delegates for UIActionSheet and UIAlertView

JCDActionSheetDelegate.h

//
//  JCDActionSheetDelegate.h
//  Created by Justin Driscoll on 4/3/13.
//

#import <UIKit/UIKit.h>

typedef void (^JCDActionSheetDelegateCallback)(UIActionSheet *actionSheet, NSInteger buttonIndex);

@interface JCDActionSheetDelegate : NSObject <UIActionSheetDelegate>

- (id)initWithCallback:(JCDActionSheetDelegateCallback)callback;

@end

JCDActionSheetDelegate.m

//
//  JCDActionSheetDelegate.m
//  Created by Justin Driscoll on 4/3/13.
//

#import "JCDActionSheetDelegate.h"

@interface JCDActionSheetDelegate () {
    JCDActionSheetDelegate *_this;
    JCDActionSheetDelegateCallback _callback;
}
@end

@implementation JCDActionSheetDelegate

- (id)initWithCallback:(JCDActionSheetDelegateCallback)callback
{
    self = [super init];
    if (self) {
        // We need to retain ourselves
        _this = self;

        _callback = [callback copy];
    }
    return self;
}

- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex
{
    _callback(actionSheet, buttonIndex);

    // We can release ourselves now
    _this = nil;
}

@end

JCDAlertViewDelegate.h

//
//  JCDAlertViewDelegate.h
//  Created by Justin Driscoll on 7/26/13.
//

#import <Foundation/Foundation.h>

typedef void (^JCDAlertViewDelegateCallback)(UIAlertView *alertView, NSInteger buttonIndex);

@interface JCDAlertViewDelegate : NSObject <UIAlertViewDelegate>

- (id)initWithCallback:(JCDAlertViewDelegateCallback)callback;

@end

JCDAlertViewDelegate.m

//
//  JCDAlertViewDelegate.m
//  Created by Justin Driscoll on 7/26/13.
//

#import "JCDAlertViewDelegate.h"

@interface JCDAlertViewDelegate () {
    JCDAlertViewDelegate *_this;
    JCDAlertViewDelegateCallback _callback;
}
@end

@implementation JCDAlertViewDelegate

- (id)initWithCallback:(JCDAlertViewDelegateCallback)callback
{
    self = [super init];
    if (self) {
        // We need to retain ourselves
        _this = self;

        _callback = [callback copy];
    }
    return self;
}

- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
{
    _callback(alertView, buttonIndex);

    // We can release ourselves now
    _this = nil;
}

@end