The implementation for a block based UIAlertView

Example.m

- (void)deleteFile:(NSString*)file {
	[[HMAlertView alertViewWithTitle:@"Delete File"
	                         message:@"Are you sure?"
	                     cancelTitle:NSLocalizedString(@"No", @"")
	                    cancelAction:nil
	                    confirmTitle:NSLocalizedString(@"Yes", @"")
	                   confirmAction:^(void) {
	                                      [[NSFileManager defaultManager] removeItemAtPath:file error:nil];
	                                 }] show];
}

HMAlertView.h

//
//  HMAlertView.h
//  Created by Chris Ross on 21/07/2011.
//

#import <UIKit/UIKit.h>

@interface HMAlertView : UIAlertView

+ (HMAlertView*)alertViewWithTitle:(NSString*)title
                           message:(NSString*)message
                       cancelTitle:(NSString*)cancelTitle
                      cancelAction:(void(^)())cancelAction
                      confirmTitle:(NSString*)confirmTitle
                     confirmAction:(void(^)())confirmAction;

@end

HMAlertView.m

//
//  HMAlertView.m
//  Created by Chris Ross on 21/07/2011.
//

#import "HMAlertView.h"

@interface HMHiddenAlertViewDelegate : NSObject {
	void(^confirmAction)();
	void(^cancelAction)();
}

- (id)initWithCancelAction:(void(^)())cancelAction confirmAction:(void(^)())confirmAction;

@end;

@implementation HMHiddenAlertViewDelegate

- (id)initWithCancelAction:(void(^)())_cancelAction confirmAction:(void(^)())_confirmAction {
	self = [super init];
	if( self ) {
		cancelAction = [_cancelAction copy];
		confirmAction = [_confirmAction copy];
	}
	return self;
}

- (void)dealloc {
	[cancelAction release];
	[confirmAction release];
	[super dealloc];
}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
	if( buttonIndex == 0 && cancelAction ) {
		cancelAction();
	}
	if( buttonIndex == 1 && confirmAction ) {
		confirmAction();
	}
	[self autorelease];
}

@end

@implementation HMAlertView

+ (HMAlertView*)alertViewWithTitle:(NSString*)title
                           message:(NSString*)message
                       cancelTitle:(NSString*)cancelTitle
                      cancelAction:(void(^)())cancelAction
                      confirmTitle:(NSString*)confirmTitle
                     confirmAction:(void(^)())confirmAction {
	
	return [[[UIAlertView alloc] initWithTitle:title
                                           message:message
                                          delegate:[[HMHiddenAlertViewDelegate alloc] initWithCancelAction:cancelAction confirmAction:confirmAction]
                                 cancelButtonTitle:cancelTitle
                                 otherButtonTitles:confirmTitle, nil] autorelease];
}

@end