Parse - 作为PFFile的imageView不会加载

时间:2015-06-14 22:18:30

标签: ios swift parse-platform

我不明白发生了什么。我在Parse中将图像保存为PFFile。我可以看到它,我知道它在那里。我希望将它作为细胞图像。下面的代码的其余部分工作正常,PFFile的内存地址也打印。 textLabel和detailTextLabel也很好,但图像不会显示(即使我删除' loadInBackground')。有什么想法吗?

 override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath, object: PFObject?) -> PFTableViewCell? {
    var cell = tableView.dequeueReusableCellWithIdentifier("Cell") as! PFTableViewCell!
    if cell == nil {
     cell = PFTableViewCell(style: .Subtitle, reuseIdentifier: "Cell")
    }

    if let name = object?["name"] as? String {
        cell.textLabel?.text = name
    }

    if let artist = object?["artist"] as? String {
        cell.detailTextLabel?.text = artist
    }

    if let artwork = object?["artwork"] as? PFFile {
        println("we've got an artwork image \(artwork)")
        //cell!.imageView!.image = UIImage(named: "placeholder.jpg")
        cell.imageView?.file = artwork
        cell.imageView?.loadInBackground()
    }

    return cell
}

1 个答案:

答案 0 :(得分:1)

Parse只保存对表中图像的引用,您将不得不进行另一次异步调用来检索该消息。:

let artwork = object?["artwork"] as PFFile
artwork.getDataInBackgroundWithBlock {
  (imageData: NSData?, error: NSError?) -> Void in
  if error == nil {
    if let imageData = imageData {
        let image = UIImage(data:imageData)
    }
  }
}
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