70 lines
2.2 KiB
Swift
70 lines
2.2 KiB
Swift
//
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// CountdownAlertController.swift
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// VoidLink
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//
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// Created by Weimin on 2025/10/6.
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// Copyright © 2025 True砖家 @ Bilibili. All rights reserved.
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//
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import UIKit
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@objc class CountdownAlertController: NSObject {
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/// 类方法，直接在任何 UIViewController 上显示倒计时弹窗
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/// - Parameters:
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/// - viewController: 要显示弹窗的控制器
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/// - title: 弹窗标题
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/// - message: 弹窗内容
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/// - buttonTitle: 按钮初始文字（倒计时结束后显示）
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/// - countdown: 倒计时秒数
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/// - completion: 点击确认或倒计时结束的回调
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@objc public static var actionCancelled:Bool = false
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@objc class func showAlert(
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in viewController: UIViewController,
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title: String?,
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message: String?,
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withCancel: Bool,
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buttonTitle: String,
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countdown: Int,
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completion: (() -> Void)? = nil
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) {
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var remainingSeconds = countdown
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let alert = UIAlertController(title: title, message: message, preferredStyle: .alert)
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let confirmAction = UIAlertAction(title: "\(remainingSeconds)", style: .default) { _ in
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actionCancelled = false
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completion?()
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}
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let cancelAction = UIAlertAction(title: SwiftLocalizationHelper.localizedString(forKey: "Cancel"), style: .cancel) { _ in
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actionCancelled = true
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completion?()
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}
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confirmAction.isEnabled = false
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if withCancel {alert.addAction(cancelAction)}
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alert.addAction(confirmAction)
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viewController.present(alert, animated: true, completion: nil)
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// 倒计时
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let timer = DispatchSource.makeTimerSource(queue: DispatchQueue.main)
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timer.schedule(deadline: .now(), repeating: 1.0, leeway: .milliseconds(50))
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timer.setEventHandler {
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remainingSeconds -= 1
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if remainingSeconds <= 0 {
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timer.cancel()
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confirmAction.isEnabled = true
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confirmAction.setValue(buttonTitle, forKey: "title")
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} else {
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confirmAction.setValue("\(remainingSeconds)", forKey: "title")
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}
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}
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timer.resume()
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}
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}
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