Question

我正在使用swifi创建类似SMS的应用程序。我想显示发布到Firebase数据库的内容，但无法显示。我是一个初学者，所以我认为小学部分是否有问题。构建将成功。即使您登录并显示主屏幕，正在加载的动画继续旋转。

我要检索和显示的信息是名称，句柄，profilePic和两个文本数据。

编写HomeViewTableViewCell和HomeViewController的代码。请。帮帮我...

HomeViewTableViewCellーーーーーーー的ーーーーーーーーー代码

import UIKit

public class HomeViewTableViewCell: UITableViewCell {

  @IBOutlet weak var profilePic: UIImageView!
  @IBOutlet weak var name: UILabel!
  @IBOutlet weak var handle: UILabel!
  @IBOutlet weak var whiteText: UITextView!
  @IBOutlet weak var blackText: UITextView!


  override public func awakeFromNib() {
    super.awakeFromNib()
  }

  public func configure(name:String,handle:String,whiteText:String,blackText:String)
  {
    self.whiteText.text = whiteText
    self.blackText.text = blackText
    self.handle.text = "@"+handle
    self.name.text = name
    if((profilePic) != nil)
    {
      let imageData = NSData(contentsOf: NSURL(string:profilePic!)! as URL)
      self.profilePic.image = UIImage(data:imageData! as Data)
    }
    else
    {
      self.profilePic.image = UIImage(named:"twitter")
    }
  }

}

HomeViewController的ーーーーーーーーーー代码

import UIKit
import FirebaseDatabase
import FirebaseAuth

class HomeViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
  func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell: UITableViewCell = UITableViewCell(style: UITableViewCellStyle.subtitle, reuseIdentifier: "Cell")
    return cell
  }
  var databaseRef = Database.database().reference()
  var loggedInUser:AnyObject?
  var loggedInUserData:AnyObject?


  @IBOutlet weak var aivLoading: UIActivityIndicatorView!
  @IBOutlet weak var homeTableView: UITableView!

  var whiteText = [AnyObject?]()
  var blackText = [AnyObject?]()

  override func viewDidLoad() {
    super.viewDidLoad()

    self.loggedInUser = Auth.auth().currentUser

    self.databaseRef.child("whiteText/\(self.loggedInUser!.uid)").observe(.childAdded, with: { (snapshot:DataSnapshot) in
      self.whiteText.append(snapshot)
    })
    self.databaseRef.child("blackText/\(self.loggedInUser!.uid)").observe(.childAdded, with: { (snapshot:DataSnapshot) in
      self.blackText.append(snapshot)
      self.homeTableView.insertRows(at: [IndexPath(row:0,section:0)], with: UITableViewRowAnimation.automatic)
      self.aivLoading.stopAnimating()
    }){(error) in
      print(error.localizedDescription)
    }
  }
}
override func didReceiveMemoryWarning() {
  super.didReceiveMemoryWarning()
}

func numberOfSectionsInTableView(tableView: UITableView) -> Int {
  return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
  return self.whiteText.count
}


private func tableView(_ tableView: UITableView,
                       cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

  let cell: HomeViewTableViewCell = tableView.dequeueReusableCell(withIdentifier: "HomeViewTableViewCell", for: indexPath as IndexPath) as! HomeViewTableViewCell

  let submitW = (whiteText[(self.whiteText.count-1) - indexPath.row] as AnyObject).value(forKey: "text") as! String

  let submitB = (blackText[(self.blackText.count-1) - indexPath.row] as AnyObject).value(forKey: "text") as!


    cell.configure(name:self.loggedInUserData!.value(forKey: "name") as! String,handle:self.loggedInUserData!.value(forKey: "handle")  as! String,whiteText:submitW,blackText:submitB)

  return cell
}
}

使用swift和firebase创建SNS，表格视图中单元格未显示

0 个答案: