如何删除webview的标题

document.title = "";

WebView webView = findViewById(R.id.webview);
webView.setWebChromeClient(new WebChromeClient() {
    @Override
    public void onReceivedTitle(WebView view, String title) {
        super.onReceivedTitle(view, title);
        if (title != null && !title.isEmpty()) {
            view.postDelayed(() -> view.evaluateJavascript("document.title = '';", null), 100);
        }
    }
});

webView.navigationDelegate = self

func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
    webView.evaluateJavaScript("document.title = '';", completionHandler: nil)
}