Swift Webview 页面不会打开页面内的链接

Question

我有一个应用程序，它有一个 webview 选项卡。在我使用的特定网站上，它不会打开链接。在 safari 或其他浏览器上时，所有链接都会自动打开一个新选项卡。我想让用户保持在同一个 webview 中。我怎样才能做到这一点？下面是我的代码。我可以使用 React Native 和 Flutter 做到这一点，但无法迅速解决。请帮忙。

class ExampleSecondViewController: UIViewController, WKUIDelegate {
var webView: WKWebView!
override func viewDidLoad() {
   super.viewDidLoad()
   let myURL = URL(string:"https://travelsecrets.live")
   let myRequest = URLRequest(url: myURL!)
   webView.load(myRequest)
   webView.allowsBackForwardNavigationGestures = true
   webView.addObserver(self, forKeyPath: #keyPath(WKWebView.estimatedProgress),
       options: .new, context: nil)

 

       webView.configuration.preferences.javaScriptEnabled = true
}
 
 override func loadView() {
   let webConfiguration = WKWebViewConfiguration()
   webView = WKWebView(frame: .zero, configuration: webConfiguration)
   webView.uiDelegate = self
   view = webView
  }

 override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: 
  [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
    if keyPath == "estimatedProgress" {
        print(Float(webView.estimatedProgress))
     }
  }
  }

Answer 1

你需要为你的 webView 实现 navigationDelegate：

override func loadView() {
    let webConfiguration = WKWebViewConfiguration()
    webView = WKWebView(frame: .zero, configuration: webConfiguration)
    webView.uiDelegate = self
    // this delegate
    webView.navigationDelegate = self
    view = webView
}

并使用这个方法：

func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
 if navigationAction.navigationType == WKNavigationType.linkActivated {
    webView.load(navigationAction.request)
    decisionHandler(.cancel)
    return
 }
 decisionHandler(.allow)
}

基于此线程：https://stackoverflow.com/a/51660446/10492380