How to get [UIImage imageWithContentsOfFile:] and High Res Images working

Question

As many people are complaining it seems that in the Apple SDK for the Retina Display there\'s a bug and imageWithContentsOfFile actually does not automatically load the 2x i

Answer 1

[UIImage imageWithContentsOfFile:] doesn't load @2x graphics if you specify an absolute path.

Here is a solution:

- (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] autorelease];
    else
        return [UIImage imageWithContentsOfFile:path];
}

Credit goes to Christof Dorner for his simple solution (which I modified and pasted here).