NSOperation

#import <Foundation/Foundation.h>

@interface DisplayImages : NSOperation {

    NSURL *imageUrl;
    UIImageView *imageView;
}

@property (nonatomic,retain) NSURL *imageUrl;
@property (nonatomic,retain) UIImageView *imageView;

-(id)initWithAttributes:(NSURL *)imageUrlFromMain ImageView:(UIImageView *)imageViewFromParent;

@end




#import "DisplayImages.h"
#import <AssetsLibrary/AssetsLibrary.h>
#import "NSOperationalQueueViewController.h"
@implementation DisplayImages

@synthesize imageUrl;
@synthesize imageView;


-(id)initWithAttributes:(NSURL *)imageUrlFromMain ImageView:(UIImageView *)imageViewFromParent{

    if (![super init]) return nil;

    [self setImageUrl:imageUrlFromMain];

    [self setImageView:imageViewFromParent];

     return self;
}

-(void)main{

    typedef void (^ALAssetsLibraryAssetForURLResultBlock)(ALAsset *asset);
    typedef void (^ALAssetsLibraryAccessFailureBlock)(NSError *error);

    ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *myasset){

        ALAssetRepresentation *rep = [myasset defaultRepresentation];
        CGImageRef iref = [rep fullResolutionImage];
        UIImage *topicImage;

        if (iref){

            topicImage = [UIImage imageWithCGImage:iref scale:[rep scale] orientation:(UIImageOrientation)[rep orientation]];

            self.imageView.image = topicImage;

            //NSOperationalQueueViewController *temp = (NSOperationalQueueViewController *)[NSOperationalQueueViewController getParent];

            //[temp performSelectorOnMainThread:@selector(displayImages:) withObject:self.imageView waitUntilDone:YES];

        }
    };

    ALAssetsLibraryAccessFailureBlock failureblock  = ^(NSError *myerror){

    };

    NSLog(@"Url is %@",(NSString *)imageUrl);

    ALAssetsLibrary* assetslibrary = [[[ALAssetsLibrary alloc] init] autorelease];
    [assetslibrary assetForURL:imageUrl
                   resultBlock:resultblock

                  failureBlock:failureblock];
}

-(void)dealloc{

    [imageUrl release];
    imageUrl = nil;

    [imageView release];
    imageView = nil;

    [super dealloc];
}

@end