json fetch

- (NSString*)currentImageOnServer {
    NSURL *JSONLocation = [NSURL URLWithString:@"http://radiolight.us/Calendar/dirList.php"];
    NSString *pictureLocation = [NSString stringWithFormat:@"http://radiolight.us/Calendar/"];

    [[[NSURLSession sharedSession] dataTaskWithURL:JSONLocation
                                 completionHandler:^(NSData *JSONdata, NSURLResponse *response, NSError *error) {
                                     // Process Data
                                     NSError *jsonParsingError = nil;
                                     NSArray *filesInDirectory = [NSJSONSerialization JSONObjectWithData:JSONdata
                                                                                                 options:0
                                                                                                   error:&jsonParsingError];
                                     for (NSDictionary *dictionary in filesInDirectory) { NSString *fileName = dictionary[@"name"];
                                         if ([[fileName pathExtension] isEqualToString: @"png"]) {
                                             NSString *imagePath = [pictureLocation stringByAppendingPathComponent:fileName];
                                             nameOfFile = fileName;
                                             imageURL = imagePath;
                                             NSLog(@"imageURL is %@", imageURL);
                                         }
                                         NSLog(@"Dictionary Deal finished, nameOfFile is now %@", nameOfFile);
                                     }
                                 }] resume];
    return nameOfFile;
}