如何将 url 添加到警报？

Question

有没有办法为寻找更多信息的用户添加 url？我的警报看起来像这样

let alert = UIAlertController(title: "Alert details", message: "For more detailed information, click the link below", preferredStyle: UIAlertControllerStyle.Alert)
    // add url here
    let okayAction = UIAlertAction(title: "Ok", style: .Default) { (action) in
        print(action)
    }
    alert.addAction(okayAction)

想法是将它们重定向到网页并关闭应用程序中的 UIAlertController

Answer 1

您不能向 UIAlertController 添加任意接口。标题和消息不可点击。您无法添加更多文本。相反，添加另一个按钮 (UIAlertAction) 将它们引导至网页。或者，或者使用其他接口而不是 UIAlertController（例如，您可以放置一个 看起来 像警报的呈现视图控制器）。

Answer 2

let alert = UIAlertController(title: "Default Title", message: nil, preferredStyle: .alert)
let textView = UITextView()
textView.autoresizingMask = [.flexibleWidth, .flexibleHeight]

let controller = UIViewController()

textView.frame = controller.view.frame
controller.view.addSubview(textView)
textView.backgroundColor = .clear

alert.setValue(controller, forKey: "contentViewController")

let height: NSLayoutConstraint = NSLayoutConstraint(item: alert.view, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: 150)
alert.view.addConstraint(height)

let attributedString = NSMutableAttributedString(string: "http://movies.com")
let url = URL(string: "http://movies.com")

attributedString.setAttributes([.link: url ?? ""], range: NSMakeRange(0, attributedString.length))


textView.attributedText = attributedString
textView.isUserInteractionEnabled = true
textView.isEditable = false

// Set how links should appear: blue and underlined
textView.linkTextAttributes = [
    .foregroundColor: UIColor.blue,
    .underlineStyle: NSUnderlineStyle.single.rawValue
]

let okAction = UIAlertAction(title: "OK", style: .default) {
    UIAlertAction in
}
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel) {
    UIAlertAction in
}

alert.addAction(okAction)
alert.addAction(cancelAction)

present(alert, animated: true, completion: nil)

从这里开始：https://overcoder.net/q/1502030/кликабельный-url-на-uialertcontroller

如何将 url 添加到警报？

How can I add a url to an alert?

nsurl

swift

uialertcontroller