我的数据突然停止显示我的用户名。这有什么奇怪之处,或者我只是误读了我的代码。它之前正在工作,但现在它突然停止输出用户名。
{
"rules": {
"Users":{
".read": "true",
".write": "true"
},
"general_room" : {
".read": "true",
".write": "true"
}
}
}
import UIKit
import Foundation
import Firebase
import FirebaseDatabase
import FirebaseStorage
import AlamofireImage
import Alamofire
struct postStruct {
let username : String!
let message : String!
let photoURL : String!
let timeStamp: String!
}
class GeneralChatroom: UIViewController, UITableViewDataSource, UITableViewDelegate, UITextFieldDelegate {
@IBOutlet weak var messageTextField: UITextField!
@IBOutlet weak var tableView: UITableView!
var generalRoomDataArr = [postStruct]()
override func viewDidLoad() {
super.viewDidLoad()
//TableView Cell word wrap (Dynamic Text)
self.tableView.dataSource = self
self.tableView.delegate = self
self.tableView.estimatedRowHeight = 78
self.tableView.rowHeight = UITableViewAutomaticDimension
let ref = FIRDatabase.database().reference()
//let userID = FIRAuth.auth()?.currentUser?.uid
ref.child("general_room").queryOrderedByKey().observe(.childAdded, with: {snapshot in
let snapDict = snapshot.value as? NSDictionary
let message = snapDict?["Message"] as? String ?? ""
let username = snapDict?["Username"] as? String ?? ""
let firebaseUserPhotoURL = snapDict?["photo_url"] as? String ?? ""
print("username: " + username)
print("message: " + message)
//Time String from Firbase Database
let timeString = snapDict?["time_stamp"] as? String ?? "2017-03-06 00:20:51"
//timeAgoSinceDate - Format and call function to recieve time of post
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let timeStampDate = dateFormatter.date(from: timeString)
let timeStamp = timeAgoSinceDate(date: timeStampDate!, numericDates: false)
//Assign array values
self.generalRoomDataArr.insert(postStruct(username: username, message: message, photoURL: firebaseUserPhotoURL, timeStamp: timeStamp), at: 0)
self.tableView.reloadData()
})
}
@IBAction func backButtonPressed(_ sender: UIButton) {
self.performSegue(withIdentifier: "BackToRoom", sender: nil)
}
//Message Send button is pressed data uploaded to firebase
@IBAction func sendButtonPressed(_ sender: UIButton) {
//If a character exists will be uploaded to firebase
if ((messageTextField.text?.characters.count)! > 0) {
let message : String = self.messageTextField.text!
UploadGeneralChatRoom(message: message) //upload to general_room
self.messageTextField.text = nil
messageTextField.resignFirstResponder()//Quit keyboard
self.tableView.reloadData() //Reload tableView
//UploadUserData() //Update Rank in database
}
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return generalRoomDataArr.count // your number of cell here
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell")
//Transform Data From ^ to load at the bottom
tableView.transform = CGAffineTransform (scaleX: 1,y: -1);
cell?.contentView.transform = CGAffineTransform (scaleX: 1,y: -1);
cell?.accessoryView?.transform = CGAffineTransform (scaleX: 1,y: -1);
// tableView.backgroundColor = UIColor.white
// tableView.layer.cornerRadius = 3.0
// tableView.layer.masksToBounds = false
// tableView.layer.shadowColor = UIColor.black.withAlphaComponent(0.2).cgColor
// tableView.layer.shadowOffset = CGSize(width: 0, height: 0)
// tableView.layer.shadowOpacity = 0.8
// cell?.contentView.backgroundColor = UIColor.clear
//
// let whiteRoundedView : UIView = UIView(frame: CGRect(x: 10, y: 8, width: self.view.frame.size.width - 20, height: 120))
//
// whiteRoundedView.layer.backgroundColor = CGColor(colorSpace: CGColorSpaceCreateDeviceRGB(), components: [1.0, 1.0, 1.0, 0.9])
// whiteRoundedView.layer.masksToBounds = false
// whiteRoundedView.layer.cornerRadius = 3.0
// whiteRoundedView.layer.shadowOffset = CGSize(width: 0, height: 0)
// whiteRoundedView.layer.shadowOpacity = 0.2
//
// cell?.contentView.addSubview(whiteRoundedView)
// cell?.contentView.sendSubview(toBack: whiteRoundedView)
//
//
//Set username label to display username
let usernameLabel = cell?.viewWithTag(1) as! UILabel
usernameLabel.text = generalRoomDataArr[indexPath.row].username
//Set message label to display message
let messageLabel = cell?.viewWithTag(2) as! UILabel
messageLabel.text = generalRoomDataArr[indexPath.row].message
messageLabel.numberOfLines = 0
//initialize UI Profile Image
let imageView = cell?.viewWithTag(3) as! UIImageView
//Make Porfile Image Cirlce
imageView.layer.cornerRadius = imageView.frame.size.width/2
imageView.clipsToBounds = true
//Set timeStampLabel to current time AGO
let timeStampLabel = cell?.viewWithTag(4) as! UILabel
timeStampLabel.text = generalRoomDataArr[indexPath.row].timeStamp
timeStampLabel.numberOfLines = 0
//Loading and change of Usesrs profile image on chat cell
let userProfileChatImage = generalRoomDataArr[indexPath.row].photoURL
//Load profile image(on cell) with URL & Alamofire Library
let downloadURL = NSURL(string: userProfileChatImage!)
imageView.af_setImage(withURL: downloadURL as! URL)
// your cell coding
return cell!
}
// KeyBoard (move text box above keyboard)
// Start Editing The Text Field
func textFieldDidBeginEditing(_ messageTextField: UITextField) {
moveTextField(messageTextField, moveDistance: -250, up: true)
}
// Finish Editing The Text Field
func textFieldDidEndEditing(_ messageTextField: UITextField) {
moveTextField(messageTextField, moveDistance: -250, up: false)
}
// Hide the keyboard when the return key pressed
func textFieldShouldReturn(_ messageTextField: UITextField) -> Bool {
messageTextField.resignFirstResponder()
return true
}
// Move the text field in a pretty animation!
func moveTextField(_ messageTextField: UITextField, moveDistance: Int, up: Bool) {
let moveDuration = 0.3
let movement: CGFloat = CGFloat(up ? moveDistance : -moveDistance)
UIView.beginAnimations("animateTextField", context: nil)
UIView.setAnimationBeginsFromCurrentState(true)
UIView.setAnimationDuration(moveDuration)
self.view.frame = self.view.frame.offsetBy(dx: 0, dy: movement)
UIView.commitAnimations()
}
}//END CLASS
答案 0 :(得分:0)
前言:由于代表,我还不能做出简单的评论。正如Ro4ch所提到的,检查身份验证规则非常重要。但是,您可以验证snapshot.key
值是否与Firebase控制台上的值相同。
我将假设Kebtfc...
是general_room
的孩子。如果是这样的话。然后该快照将是一组用户快照正确吗?你需要解析它。