在 Swift Table View 中不填充 Firebase 数据

问题描述

过去 2 天我一直被这个问题困扰，但找不到解决方案。我正在使用带有视图控制器的 Firebase，屏幕的顶部我用它来显示登录用户的信息，在我有一个表视图下，我想在其中显示其他人的图片和基本信息用户。我可以从 Firebase 下载数据并显示登录用户的信息。我遇到的问题是在单元格内填充数据。我创建了一个服务文件，因为我将在应用程序的其他区域多次使用这些功能。

这是我的代码：

import Foundation
import Firebase

struct Service {
    
    static func fetchUser(withUid uid: String,completion: @escaping(Member) -> Void) {
        COLLECTION_USERS.document(uid).getDocument { (snapshot,error) in
            guard let dictionary = snapshot?.data() else { return }
            let user = Member(dictionary: dictionary)
            completion(user)}
    }
    
    static func fetchUsers(forCurrentUser user: Member,completion: @escaping([Member]) -> Void) {
        var members = [Member]()
        
        let query = COLLECTION_USERS
        
        query.getDocuments { (snapshot,error) in
            guard let snapshot = snapshot else { return }
            snapshot.documents.forEach({ document in
                let dictionary = document.data()
                let user = Member(dictionary: dictionary)
                                        
                guard user.uid != Auth.auth().currentUser?.uid else { return }
                members.append(user)
                                        
                    if members.count == snapshot.documents.count - 1 { completion(members)
                        print("FROM SERVICE MEMBERS: \(members)") // Console displays this: FROM SERVICE FETCHING USERS COUNT 5
                }}
            )}
    }
}

查看控制器

import UIKit
import Firebase

class HomeVC: UIViewController,UITableViewDelegate,UITableViewDataSource {
   
    @IBOutlet weak var memberFeedTableView: UITableView!
    @IBOutlet weak var profileImage: userImagesView!
    @IBOutlet weak var profileNameAgeLbl: UILabel!
    @IBOutlet weak var profileCityLbl: UILabel!
    @IBOutlet weak var profileStatus: UILabel!
    @IBOutlet weak var changeFilterOptions: UIBarButtonItem!

    var members = [Member]()
    
    var userId = Auth.auth().currentUser?.uid
    var handle: AuthStateDidchangelistenerHandle?
    var userListener: ListenerRegistration!

    override func viewDidLoad() {
        super.viewDidLoad()

        memberFeedTableView.dataSource = self
        memberFeedTableView.delegate = self
        memberFeedTableView.rowHeight = 450
        
        configureUI()
        
        fetchUserData()
    }
        
    func configureUI() {
        navigationController?.navigationBar.isHidden = false
        overrideUserInterfaceStyle = .light
        
        tapToReleaseKeyboard()
        
        let background = backgroundGradientColor()
        background.frame = self.view.bounds
        self.view.layer.insertSublayer(background,at: 0)
        
    }
    
    func tableView(_ tableView: UITableView,numberOfRowsInSection section: Int) -> Int {
        return members.count
    }
    
    func tableView(_ tableView: UITableView,cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = memberFeedTableView.dequeueReusableCell(withIdentifier: "MembersFeedCell",for: indexPath) as! MembersFeedCell
        cell.configureMemberFeedCell(member: members[indexPath.row])
        return cell
    }
    
    func fetchUsersData(forCurrentUser user: Member) {
        Service.fetchUsers(forCurrentUser: user) { users in
            self.members = users //issue is here,I'm not sure how to send the array to the table view to populate the cells.
            print("CHECKING ARRAY..: \(self.members.count)") // Console displays this: CHECKING ARRAY..: 4



        }
    }
    
    func fetchUserData() {
        guard let currentUid = Auth.auth().currentUser?.uid else { return }
        Service.fetchUser(withUid: currentUid) { user in
            self.fetchUsersData(forCurrentUser: user)
            self.profileNameAgeLbl.text = user.name + "," + " " + (user.age)
            self.profileCityLbl.text = user.city
            self.profileImage.loadImage(with: user.imageURL)}
    }
    

非常感谢任何帮助。谢谢！

解决方法

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