Blocksのラッパークラス ref: http://qiita.com/items/2082

BlocksWrapper.h

#import <Foundation/Foundation.h>

typedef void (^CallableBlock)();

@interface BlocksWrapper : NSObject

@property (strong, nonatomic) CallableBlock blocks;
- (BlocksWrapper *)initWithBlocks:(CallableBlock)blocks;
- (void)invoke;

@end

BlocksWrapper.m

#import "BlocksWrapper.h"

@implementation BlocksWrapper
@synthesize blocks = _blocks;

- (BlocksWrapper *)initWithBlocks:(CallableBlock)blocks
{
    self = [super init];
    self.blocks = blocks;
    return self;
}

- (void)invoke
{
    self.blocks();
}
@end