swift - Firebase 数据库发布错误 : Cannot invoke initializer for type 'Post' with an argument list of type

Question

我正在尝试将某些内容发布到我的 Firebase 数据库，但该帖子需要 uid，因此我可以从谁那里知道该帖子。我不断收到此错误:`无法使用类型为'(用户名:String!，postId:String，postText:String!，postGame:String!，postDate:(NSNumber)，postType: String, uid: String!)' 但我不知道如何解决这个问题。有人可以帮帮我吗!谢谢!

 import UIKit
    import FirebaseAuth
    import FirebaseStorage
    import FirebaseDatabase

    class AddPostViewController: UIViewController,UIImagePickerControllerDelegate, UINavigationControllerDelegate {


        @IBOutlet weak var textView: UITextView!
        @IBOutlet weak var GameText: UITextField!

        var currentUser: User2!

        var dataBaseRef: DatabaseReference! {
            return Database.database().reference()
        }

        var storageRef: Storage {

            return Storage.storage()
        }

        func loadUserInfo(){

            let userRef = dataBaseRef.child("users/\(Auth.auth().currentUser!.uid)")
            userRef.observe(.value, with: { (snapshot) in

                self.currentUser = User2(snapshot: snapshot)
                        }) { (error) in
                print(error.localizedDescription)
            }

        }

        @objc func savePost(){

            var text: String!
            var Game: String!

            if let postText = textView.text {
                text = postText
            }

            if let postGame = GameText.text {
                Game = postGame
            }


            let newPost = Post(username: self.currentUser.username, postId: NSUUID().uuidString, postText: text, postGame: Game, postDate: (NSDate().timeIntervalSince1970 as NSNumber), postType: "TEXT", uid: self.currentUser.uid)
                let postRef = self.dataBaseRef.child("posts").childByAutoId()
                postRef.setValue(newPost.toAnyObject(), withCompletionBlock: { (error, ref) in
                    if error == nil {
                        self.navigationController!.popToRootViewController(animated: true)
                    }else {
                        print(error!.localizedDescription)

                    }
                })

            }

        }

这是我的 Post 模型:

import Foundation
import UIKit
import FirebaseDatabase
import FirebaseAuth
import Firebase

struct Post {

    var username: String!
    var Game: String!
    var Console: String!
    var ExtraInfo: String!
    var uid: String!
    var postId: String!
    var postType: String!
    var postText: String!
    var postDate: NSNumber!
    var ref: DatabaseReference!
    var key: String?

    init(snapshot: DataSnapshot){

        self.ref = snapshot.ref
        self.key = snapshot.key
        self.username = (snapshot.value! as! NSDictionary)["username"] as! String
        self.Console = (snapshot.value! as! NSDictionary)["Console"] as! String
        self.ExtraInfo = (snapshot.value! as! NSDictionary)["ExtraInfo"] as! String
        self.Game = (snapshot.value! as! NSDictionary)["Game"] as! String
        self.postId = (snapshot.value! as! NSDictionary)["postId"] as! String
        self.postType = (snapshot.value! as! NSDictionary)["postType"] as! String
        self.postDate = (snapshot.value! as! NSDictionary)["postDate"] as! NSNumber
        self.postText = (snapshot.value! as! NSDictionary)["postText"] as! String
        self.uid = (snapshot.value! as! NSDictionary)["uid"] as! String

    }

    init(username: String, postId: String, Game: String, Console: String, ExtraInfo: String, postText: String, postDate: NSNumber, postType: String, uid: String){

        self.username = username
        self.Game = Game
        self.Console = Console
        self.ExtraInfo = ExtraInfo
        self.postText = postText
        self.postType = postType
        self.uid = uid
        self.postDate = postDate
        self.postId = postId

    }

    func toAnyObject() -> [String: Any] {
        return ["username": username, "postId":postId,"Game": Game , "Console": Console,"ExtraInfo": ExtraInfo ,"postType":postType, "postDate":postDate, "postText":postText,"uid": uid]
    }

}

Answer 1

问题出在这里:

let newPost = Post(username: self.currentUser.username, postId: NSUUID().uuidString, 
postText: text, postGame: Game, postDate: (NSDate().timeIntervalSince1970 as NSNumber), 
postType: "TEXT", uid: self.currentUser.uid)

您正在尝试初始化一个 Post 对象，但是根据您创建的 init，它需要具有以下组件:

init(username: String, postId: String, Game: String, Console: String, 
ExtraInfo: String, postText: String, postDate: NSNumber, postType: String, 
uid: String)

因此，对于 newPost，它应该具有正确的初始值设定项，例如:

let newPost = Post(username: self.currentUser.username, postId: NSUUID().uuidString, 
Game: Game, Console: /*I don't know what goes here */, ExtraInfo: String, 
postText: text, postDate: (NSDate().timeIntervalSince1970 as NSNumber), 
postType: "TEXT", uid: self.currentUser.uid)