Issue with loading and caching retina images for U

What I have

For my game I'm creating several animations using view.animationImages = imagesArray; [view startAnimating];

In my animation helper class I use this

- (UIImage *)loadRetinaImageIfAvailable:(NSString *)path
{
    NSString *retinaPath = [[path stringByDeletingLastPathComponent] stringByAppendingPathComponent:[NSString stringWithFormat:@"%@@2x.%@", [[path lastPathComponent] stringByDeletingPathExtension], [path pathExtension]]];

    if ([UIScreen mainScreen].scale == 2.0 && [[NSFileManager defaultManager] fileExistsAtPath:retinaPath] == YES)
        return [[UIImage alloc] initWithCGImage:[[UIImage imageWithData:[NSData dataWithContentsOfFile:retinaPath]] CGImage] scale:2.0 orientation:UIImageOrientationUp];
    else
        return [UIImage imageWithContentsOfFile:path];
}

- (NSMutableArray *)generateCachedImageArrayWithFilename:(NSString *)filename extension:(NSString *)extension andImageCount:(int)count
{
    _imagesArray = [[NSMutableArray alloc] init];
    _fileExtension = extension;
    _imageName = filename;
    _imageCount = count;

    for (int i = 0; i < count; i++)
    {
        NSString *tempImageNames = [NSString stringWithFormat:@"%@%i", filename, i];
        NSString *imagePath = [[NSBundle mainBundle] pathForResource:tempImageNames ofType:extension];

        UIImage *frameImage = [self loadRetinaImageIfAvailable:imagePath];
        UIGraphicsBeginImageContext(frameImage.size);
        CGRect rect = CGRectMake(0, 0, frameImage.size.width, frameImage.size.height);
        [frameImage drawInRect:rect];
        UIImage *renderedImage = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();

        [_imagesArray addObject:renderedImage];

        if (_isDoublingFrames)
        {
            [_imagesArray addObject:renderedImage];
        }
        else if (_isTriplingFrames)
        {
            [_imagesArray addObject:renderedImage];
            [_imagesArray addObject:renderedImage];
        }

        NSLog(@"filename = %@", filename);
    }

    return _imagesArray;
}

Problem and facts

Without caching images I got retina versions of images byt my animations are not fluent
If I cache images this way, animations are ok, but uses non-retina versions of images

Please is there some other way to cache and get retina versions?

Are these images located in your application bundle? If so this logic is all unnecessary because the imageWithContentsOfFile: method will already detect and load the @2x image on a retina device.

Also, you'd be better off using the [UIImage imageNamed:] method instead because this automatically caches the image for re-use, and decompresses it immediately, avoiding the need for manually caching the images, or for that trickery with drawing it into an offscreen CGContext.