webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setDatabaseEnabled(true);
webView.setWebChromeClient(new WebChromeClient());
webView.setWebViewClient(new WebViewClient() {
    @Override
    public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
        handler.proceed();
    }

    @Override
    public void onReceivedClientCertRequest(WebView view, ClientCertRequest request) {
        // TODO: Supply the client certificate
        request.onProceed(privateKey, certificates)
    }
        });
webView.loadUrl("https://some.app.url");