folder and file

+(void)createDirForImage:(NSString *)CalendarDir {
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *pathToCalendarDir = [[paths objectAtIndex:0] stringByAppendingPathComponent:CalendarDir];
    NSError *error;
    //Does directory already exist?
    if (![[NSFileManager defaultManager] fileExistsAtPath:pathToCalendarDir]) {
        if (![[NSFileManager defaultManager] createDirectoryAtPath:pathToCalendarDir
                                       withIntermediateDirectories:NO
                                                        attributes:nil
                                                             error:&error]) {
            NSLog(@"Create directory error: %@", error);
        }
    }

}

+ (void)downloadCalendarImage {
    // For this snippet we are downloading the same in two tasks.
    NSString *imageUrl = @"http://www.fnordware.com/superpng/pnggrad8rgb.png";
    // You always start by creating an NSURLConfiguration.
    NSURLSessionConfiguration *sessionConfig = [NSURLSessionConfiguration defaultSessionConfiguration];
    // This creates a session using the current class as a delegate.
    NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfig
                                                          delegate:self
                                                     delegateQueue:nil];
    //Tasks are always created by sessions. This one is created with the block-based method. Remember you could still use the NSURLSessionDownloadDelegate to track download progress.
    NSURLSessionDownloadTask *getImageTask = [session downloadTaskWithURL:[NSURL URLWithString:imageUrl]
                                                        completionHandler:^(NSURL *location, NSURLResponse *response, NSError *error) {
                                                            // Here you use the location variable provided in the completion handler to get a pointer to the image
                                                            //UIImage *downloadedImage = [UIImage imageWithData:[NSData dataWithContentsOfURL:location]];
                                                            // Finally you could, for example, update UIImageView’s image to show the new file.
                                                            dispatch_async(dispatch_get_main_queue(), ^{//scheduleImage.image = downloadedImage;
                                                            });

                                                            // This is me trying to add stuff... downloading the image to a file
                                                            NSString *imageName = [imageUrl lastPathComponent];

                                                            //  NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
                                                           // NSString *basePath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;
                                                            NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
                                                            NSString *pathToCalendarDir = [[paths objectAtIndex:0] stringByAppendingString:@"/CalendarFolder/"];


                                                            UIImage *imageToSave = [UIImage imageWithData:[NSData dataWithContentsOfURL:location]];
                                                            NSData *binaryImageData = UIImagePNGRepresentation(imageToSave);

                                                            BOOL writeSuccess = [binaryImageData writeToFile:[pathToCalendarDir stringByAppendingPathComponent:imageName] atomically:YES];

                                                            if (writeSuccess)
                                                                NSLog(@"The image has been downloaded and saved.");
                                                            else
                                                                NSLog(@"The saving of the Calendar image was unsuccessful.");
                                                        }];
    // You always have to start up the task!
    [getImageTask resume];
}