Question

我需要运行javascript警报的帮助，并在使用xcode创建的简单应用中进行确认，并在其中添加了Webview

我在ViewController.swift中的代码是：

import UIKit
import WebKit

class ViewController: UIViewController {


    @IBOutlet weak var WebView: WKWebView!

    override func viewDidLoad() {

        super.viewDidLoad()
        let url = URL(string: "MY_URL")
        let request = URLRequest(url: url!)

        WebView.load(request)

    }


}

Answer 1

首先添加第一件事，

class ViewController: UIViewController, WKUIDelegate, WKNavigationDelegate {

第二次在viewDidLoad()内的代码中添加代码

override func viewDidLoad() {
    super.viewDidLoad()

    WebView = WKWebView(frame: self.view.frame)
    WebView.uiDelegate = self
    WebView.navigationDelegate = self
    view.addSubview(WebView!)

    // your code goes from year

    let url = URL(string: "MY_URL")
    let request = URLRequest(url: url!)
    WebView.load(request)

}

这就是我可以从您的代码中查找的基本信息。

有关更多详细信息，请参见Link，这可能会消除您的所有疑问：D

Answer 2

我用以下代码解决了问题：

import UIKit

import WebKit

class ViewController: UIViewController, WKUIDelegate, WKNavigationDelegate {


@IBOutlet weak var WebView: WKWebView!


override func viewDidLoad() {

    super.viewDidLoad()

    WebView = WKWebView(frame: self.view.frame)
    WebView.uiDelegate = self
    WebView.navigationDelegate = self
    view.addSubview(WebView!)

    let url = URL(string: "MY_URL")
    let request = URLRequest(url: url!)

    WebView.load(request)


    // Do any additional setup after loading the view, typically from a nib.
}

func webView(_ WebView: WKWebView,
             runJavaScriptAlertPanelWithMessage message: String,
             initiatedByFrame frame: WKFrameInfo,
             completionHandler: @escaping () -> Void) {

    let alert = UIAlertController(title: nil, message: message, preferredStyle: .alert)
    let title = NSLocalizedString("OK", comment: "OK Button")
    let ok = UIAlertAction(title: title, style: .default) { (action: UIAlertAction) -> Void in
        alert.dismiss(animated: true, completion: nil)
    }
    alert.addAction(ok)
    present(alert, animated: true)
    completionHandler()
}

func webView(_ webView: WKWebView, runJavaScriptConfirmPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping (Bool) -> Void) {

    let alertController = UIAlertController(title: nil, message: message, preferredStyle: .actionSheet)

    alertController.addAction(UIAlertAction(title: "Ok", style: .default, handler: { (action) in
        completionHandler(true)
    }))

    alertController.addAction(UIAlertAction(title: "Cancella", style: .default, handler: { (action) in
        completionHandler(false)
    }))

    self.present(alertController, animated: true, completion: nil)
}

}

我需要帮助，以在用Xcode创建的简单Webview应用中运行Javascript Alert＆Confirm

2 个答案: