ios - 如何在用户点击 Ui 按钮时将相关数据加载到表中？

Question

我有一个带有 2 个按钮(事件和非事件)的 View 和一个 TableView 来显示我的所有用户。我想如果用户使用显示事件/非事件用户单击其中一个按钮，我该如何加载相关数据？

import UIKit

class ViewController: UIViewController,UITableViewDataSource, UISearchBarDelegate {
    var users:[User] = []
    let user1 = User(username: "user1",email: "user1@mail.com",active: true)
    let user2 = User(username: "user2",email: "user2@mail.com",active: true)
    let user3 = User(username: "user3",email: "user3@mail.com",active: false)

    @IBOutlet weak var btnActiveUser: UIButton!
    @IBOutlet weak var btnInActiveUser: UIButton!

    override func viewDidLoad() {
        super.viewDidLoad()
        users.append(user1)
        users.append(user2)
        users.append(user3)
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return users.count
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell =  UITableViewCell()
        cell.textLabel?.text =  "this cell index for \(users[indexPath.row].username) "
        return cell
    }

    @IBAction func ActionShowActiveUsers(_ sender: Any) {
        let activeUser =  users.filter( { return $0.active == true } )
        print(activeUser.count)
    }

    @IBAction func btnShowInActiveUser(_ sender: Any) {
        let inactiveUser =  users.filter( { return $0.active == false } )
        print(inactiveUser.count)
    }
}

Answer 1

你需要

var allUsers = [User]() 
var currentUsers = [User]()

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return currentUsers.count
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "cell")!
    cell.textLabel?.text =  "this cell index for \(currentUsers[indexPath.row].username) "
    return cell
}

@IBAction func ActionShowActiveUsers(_ sender: Any) {
    currentUsers =  users.filter {$0.active}
    print(currentUsers.count)
    tableView.reloadData()
}

@IBAction func btnShowInActiveUser(_ sender: Any) {
    currentUsers  = users.filter { !$0.active }
    print(currentUsers.count)
    tableView.reloadData()
}

在viewDidLoad中添加这个

tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")