Question

由于多个Alamofire请求，我想通过解析收到的JSON数据来填充表视图。然而，事情是每个单元格与其他单元格有不同的请求。每个单元格都基于IndexPath发出请求。由于调用是异步的，因此并非所有请求都已实现......

我的代码：

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
    var name = ""
    let url = "https://........"+items[indexPath.section][indexPath.row]+"......"

    Alamofire.request(url).responseJSON { (responseData) -> Void in
        if((responseData.result.value) != nil) {
            let swiftyJsonVar = JSON(responseData.result.value!)
            let object = swiftyJsonVar["results"][0]
            print(object)
            name = object["name"].stringValue
            cell.textLabel?.text = name
        }
    }
    return cell
}

如何实现每个请求？提前谢谢！

Answer 1

您应该跟踪每个请求的挂钩索引路径，以便您知道返回的值是

 struct Item
{
    var indexPath:NSIndexPath!

  func getData(index:NSIndexPath)
  {

      let url = "https://........"+items[indexPath.section][indexPath.row]+"......"

      Alamofire.request(url).responseJSON { (responseData) -> Void in
    if((responseData.result.value) != nil) {
        let swiftyJsonVar = JSON(responseData.result.value!)
        let object = swiftyJsonVar["results"][0]

         globalArr// store indexpath and value

         /// remove indexoath from allDownloads

         /// send refresh to table

      }
     }

  }

}

在行的单元格中

     if(indexPath in globalArr)
      {
         // show it
      }
      else
      { 

           // check whether it's download is in progress to avoid multiple same requests when scroll because of dequeuing 
         if(allDownloads doesn't contain inexpath)
         {

              // create object of item and start download

              // allDownloads.add(object)

          }

       }

globalArr：跟踪所有下载的对象

allDownloads：跟踪正在进行的下载

Alamofire请求表视图的每个单元格

1 个答案: