UIAlertView+Blocks.h

#import <Foundation/Foundation.h>

typedef void (^DismissBlock)(int buttonIndex);
typedef void (^CancelBlock)();

@interface UIAlertView (Blocks) <UIAlertViewDelegate> 

+ (UIAlertView*) showAlertViewWithTitle:(NSString*) title
                                message:(NSString*) message
                      cancelButtonTitle:(NSString*) cancelButtonTitle
                      otherButtonTitles:(NSArray*) otherButtons
                              onDismiss:(DismissBlock) dismissed
                               onCancel:(CancelBlock) cancelled;

@end

//
//  UIAlertView+Blocks.m
//  UIKitCategoryAdditions
//

#import "UIAlertView+Blocks.h"

static DismissBlock _dismissBlock;
static CancelBlock _cancelBlock;

@implementation UIAlertView (Blocks)

+ (UIAlertView*) showAlertViewWithTitle:(NSString*) title
                                message:(NSString*) message
                      cancelButtonTitle:(NSString*) cancelButtonTitle
                      otherButtonTitles:(NSArray*) otherButtons
                              onDismiss:(DismissBlock) dismissed
                               onCancel:(CancelBlock) cancelled {

  _cancelBlock  = [cancelled copy];

  _dismissBlock  = [dismissed copy];

  UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title
                                                  message:message
                                                 delegate:[self self]
                                        cancelButtonTitle:cancelButtonTitle
                                        otherButtonTitles:nil];

  for(NSString *buttonTitle in otherButtons)
    [alert addButtonWithTitle:buttonTitle];

  [alert show];
  return alert;
}

+ (void)alertView:(UIAlertView*) alertView didDismissWithButtonIndex:(NSInteger) buttonIndex {

    if(buttonIndex == [alertView cancelButtonIndex])
    {
        _cancelBlock();
    }
  else
  {
    _dismissBlock(buttonIndex - ); // cancel button is button 0
  }
}

@end