在IOS中将字典应用于表视图时出错

Question

我对Objective C中的开发非常陌生，我正在努力弄清楚为什么在将NSDictionary应用于表视图时会出现错误。我收到错误"在'NSDictionary*类型的对象上找不到读取数组元素的预期方法"。有人知道这意味着什么吗？或者我会如何解决它？我已经包括了我遇到问题的模型。

更新时间：被标记的语句是：

NSDictionary *conversation = self.data[indexPath.row];

谢谢！

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    ConversationTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"conversationCell" forIndexPath:indexPath];
    // Get data from array at position of the row
    NSDictionary *conversation = self.data[indexPath.row];
    // Apply the data to each row
    cell.conversationRecipients.text = [conversation valueForKey:@"recipients"];
    cell.conversationPreview.text = [conversation valueForKey:@"last_message"];
    cell.conversationTime.text = [conversation valueForKey:@"last_thread_post_short"];
    //Set conversation thumbnail
    [cell.conversationThumbnail sd_setImageWithURL:[conversation valueForKey:@"sender_avatar"]];
    return cell;
}

这是我设置自我的地方。数据：

// Successful Login
            // Create the URL from a string.
            NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"URLISHERE"]];

            NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:60];
            [request setHTTPMethod:@"GET"];
            [request addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
            // Prepare for the response back from the server
            NSHTTPURLResponse *response = nil;
            NSError *error = nil;
            // Send a synchronous request to the server (i.e. sit and wait for the response)
            NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
            NSError *serializeError;
            id json = [NSJSONSerialization JSONObjectWithData:data options:0 error:&serializeError];
            // Get response
            self.data = json;
            NSLog(@"%@", self.data);
            // Reload data after Get
            [self.tableView reloadData];

Answer 1

self.data的类型必须是NSArray而不是NSDictionary，这样它才能工作。