Swift基于系统UIAlertController实现登录弹框

import UIKit class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. } //MARK: -登录弹框 func showLoginAlertView() { let alertController = UIAlertController.init(title: "登录", message: "", preferredStyle: .alert) //输入账号TextField alertController.addTextField { (textField) in textField.placeholder = "请输入登录账号" textField.keyboardType = .default textField.font = UIFont.systemFont(ofSize: 17, weight: UIFont.Weight.semibold) } //输入密码TextField alertController.addTextField { (textField) in textField.placeholder = "请输入密码" textField.isSecureTextEntry = true textField.keyboardType = .asciiCapableNumberPad textField.font = UIFont.systemFont(ofSize: 17, weight: UIFont.Weight.black) } let confirmAction = UIAlertAction(title: "确定", style: .default) { (_) in guard let textFields = alertController.textFields else {return} let result = "账号：\(textFields.first?.text ?? "")\n密码：\(textFields.last?.text ?? "")" print(result) self.showResultAlertView(result) } alertController.addAction(confirmAction) self.show(alertController, sender: self) } //MARK: -已录入信息弹框 func showResultAlertView(_ result: String) { let alertController = UIAlertController.init(title: "登录信息", message: result, preferredStyle: .alert) let confirmAction = UIAlertAction.init(title: "知道了", style: .default) { (_) in } alertController.addAction(confirmAction) self.show(alertController, sender: self) } //MARK: - Event @IBAction func loginButtonDidClicked(_ sender: UIButton) { showLoginAlertView() } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } }

作者：Xcode_boy
链接：https://juejin.cn/post/6844903587965829128