繁体   English   中英

Swift-'PFObject无法转换为NSString'

[英]Swift - 'PFObject is not convertible to NSString'

我一直在尝试打印在单元格中的viewWillAppear中调用的PFQuery ,但是我从此行得到了错误:

cell?.textLabel?.text = message as NSString as String

这是tableView cellForRowAtIndexPath的代码:

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cellId: NSString = "cell"
    var cell: UITableViewCell? = tableView.dequeueReusableCellWithIdentifier(cellId as String) as? UITableViewCell
    if (cell == nil) {
        cell = UITableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier: cellId as String)
    }
    let message = myMessagesArray![indexPath.row] as! PFObject
    cell?.textLabel?.text = message as NSString as String
    return cell!
}

这是PFQuery

 var query = PFUser.query()
    query!.orderByAscending("Messages")
    query!.findObjectsInBackgroundWithBlock {
        (objects: [AnyObject]?, error: NSError?) -> Void in
        if error == nil {
            println("Successfully retrieved \(objects!.count) messages.")
            self.myMessagesArray = objects
            self.tableView?.reloadData()
        } else {
            println(error!.localizedDescription)
        }
    }

使用此代码:

let message = myMessagesArray[indexPath!.row] as! PFObject
cell.textLabel?.text = message.objectForKey("Messages") as? String

暂无
暂无

声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.

 
粤ICP备18138465号  © 2020-2024 STACKOOM.COM