如何使用 X509TrustManager 验证 android.net.http.SslCertificate？

安卓的WebViewClient calls onReceivedSslError当它遇到不受信任的证书时。但是，那SslError我在该调用中收到的对象没有任何公共方式来访问底层X509Certificate根据现有的验证它TrustStoreManager。查看源代码，我可以访问X509Certificate的编码字节如下：

public void onReceivedSslError(WebView view, SslErrorHandler handler,
        SslError error) {
    Bundle bundle = SslCertificate.saveState(error.getCertificate());
    X509Certificate x509Certificate;
    byte[] bytes = bundle.getByteArray("x509-certificate");
    if (bytes == null) {
        x509Certificate = null;
    } else {
        try {
            CertificateFactory certFactory = CertificateFactory.getInstance("X.509");
            Certificate cert = certFactory.generateCertificate(new ByteArrayInputStream(bytes));
            x509Certificate = (X509Certificate) cert;
        } catch (CertificateException e) {
            x509Certificate = null;
        }
    }

    // Now I have an X509Certificate I can pass to an X509TrustManager for validation.
}

显然，这是私有 API 并且很脆弱，尽管我认为它相当可靠，因为它们无法更改捆绑格式。有没有更好的办法？

经过漫长的等待，似乎有一个方法叫做getX509Certificate(): java.security.cert.X509Certificate已添加到SslCertificate在我之后功能请求作为问题 36984840.