使用图像填充UITableView

Question

我对iOS编程非常陌生，我正试图找出可能微不足道的东西。我试图从Flickr中获取Json数据，特别是图像，并使用此数据在UITableView上填充图片。这是我的尝试：

- (void)jsonParsing
{
    //-- Make URL request with server
    NSHTTPURLResponse *response = nil;
    NSString *jsonUrlString = [NSString stringWithFormat:@"http://api.flickr.com/services/feeds/photos_public.gne?tagmode=any&format=json&tags=QUERY"];
    NSURL *url = [NSURL URLWithString:[jsonUrlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

    //-- Get request and response though URL
    NSURLRequest *request = [[NSURLRequest alloc]initWithURL:url];
    NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil];

    //-- JSON Parsing
    self.flickrArray = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingMutableContainers error:nil];
    NSLog(@"Result = %@",self.flickrArray);

    for (NSMutableDictionary *dic in self.flickrArray)
    {
        NSString *string = dic[@"media"];
        if (string)
        {
            NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
            dic[@"media"] = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
        }
        else
        {
            NSLog(@"Error in url response");
        }
    }

}





- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {

    // Return the number of sections.
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    // Return the number of rows in the section.
    return [self.flickrArray count];
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];

    NSData *imageData = [self.flickrArray objectAtIndex:indexPath.row];
    cell.image = [UIImage imageWithData:imageData];

    return cell;
}

NSLog中唯一发生的事情是：Result =（null）。我不能为我的生活弄清楚我做错了什么。