Subclass for UIAlertView which allows to use blocks instead of delegate

example.m

LBAlertView *alert = [[LBAlertView alloc] initWithTitle:@"Title" message: @"message" delegate:nil cancelButtonTitle:@"Cancel" otherButtonTitles: @"Enter", nil];
alert.onClickBlock = ^(UIAlertView* alertView, int buttonIndex) {
    if (buttonIndex == 1) {
      // DO something
    }
    else {
      // Do something else
    }
};
[alert show];

LBAlertView.h

#import <UIKit/UIKit.h>

typedef void (^LB_ALERT_BLOC)(UIAlertView* alertView, int buttonIndex);

@interface LBAlertView: UIAlertView<UIAlertViewDelegate>

@property(strong, nonatomic) LB_ALERT_BLOC onClickBlock_;

- (void) setOnClickBlock: (LB_ALERT_BLOC) aBlock;

@end

LBAlertView.m

#import "UIAlertView+LBToolbox.h"

@implementation LBAlertView


- (LB_ALERT_BLOC) onClickBlock {
    return self.onClickBlock_;
}

- (void) setOnClickBlock: (LB_ALERT_BLOC) aBlock {
    self.delegate = self;
    self.onClickBlock_ = aBlock;
}

- (void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    self.onClickBlock_(alertView, buttonIndex);
}
@end