Blur the Facebook Profile image retrieved with the Facebook SDK

blurFacebookProfileimage.m

self.profilePictureView.profileID = user.id;

double delayInSeconds = 2.0;
dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
    
    UIImageView *imageView = nil;
    for (UIView *subview in [self.profilePictureView subviews]) {
        if ([subview isKindOfClass:[UIImageView class]]) {
            imageView = (UIImageView *)subview;
        }
    }
    
    if (imageView) {
        
        __block NSUInteger blurAppliedCount = 0;
        
        _workingQueue = dispatch_queue_create("com.albertodebortoli.iWillDie", DISPATCH_QUEUE_SERIAL);
        __weak dispatch_queue_t weakWorkingQueue = _workingQueue;
        __weak typeof(self) weakSelf = self;
        CGFloat blurValue = 0.1f;
        
        self.blurRecursiveBlock = ^{
            if (blurAppliedCount < 100) {
                blurAppliedCount++;
                UIImage *blurredImage = [imageView.image blurredImageWithRadius:blurValue];
                dispatch_async(dispatch_get_main_queue(), ^{
                    imageView.image = blurredImage;
                    double delayInSeconds = 0.01;
                    dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
                    dispatch_after(popTime, weakWorkingQueue, weakSelf.blurRecursiveBlock);
                });
            }
        };
        
        dispatch_async(_workingQueue, self.blurRecursiveBlock);
    }
});