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WKWebViewでSPAなサイトの遷移を監視する方法

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概要

SPAのようなページを構築していてURLを監視したいけどdelegateが呼ばれず検知出来ない

解決法

KVOでWKWebViewのurlプロパティを監視する。

class ViewController: UIViewController{
    var webView: WKWebView
    private var _observers = [NSKeyValueObservation]()
    //中略
    override func viewDidLoad(){
        _observers.append(webview.observe(\.url, options: .new) { _, _ in
            print("URL: \(self.webView.url)")
        })
    }
}

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