X509TrustManager的此实现有什么问题？

如何解决X509TrustManager的此实现有什么问题？

我必须访问PlayStore中的应用，两者的实现方式相同 x509trustmanager的版本，但一直被标记为具有“不安全的实现” '，但是代码是相同的...对于如何改进它，我将不胜感激，这不是我最擅长的领域。谢谢

代码：

public void createTrustManager() {
    // Create a trust manager that does not validate certificate chains
    TrustManager[] trustAllCerts = new TrustManager[] {new x509trustmanager() {
        @Override
        public void checkClientTrusted(java.security.cert.X509Certificate[] chain,String authType) {
    }

    @Override
    public void checkServerTrusted(java.security.cert.X509Certificate[] chain,String authType) {


        try {
            try {
                chain[0].checkValidity();
            } catch (java.security.cert.CertificateExpiredException e) {
                e.printstacktrace();
            } catch (java.security.cert.CertificateNotYetValidException e) {
                e.printstacktrace();
            }
        } catch (IllegalArgumentException e) {

            try {
                throw new IllegalArgumentException("CertificateNotYetValidException");
            } catch (IllegalArgumentException ex) {
                ex.printstacktrace();
            }
        }

    }

    public java.security.cert.X509Certificate[] getAcceptedissuers() {
        return null;
    }
    public void checkClientTrusted(X509Certificate[] certs,String authType) {
    }
    public void checkServerTrusted(X509Certificate[] certs,String authType) {
    }
}
};

// Install the all-trusting trust manager
SSLContext sc = null;
try {
    sc = SSLContext.getInstance("SSL");



} catch (NoSuchAlgorithmException e) {
    e.printstacktrace();
}
try {
    assert sc != null;

    sc.init(null,trustAllCerts,new java.security.SecureRandom());
} catch (KeyManagementException e) {
    e.printstacktrace();
}
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());

// Create all-trusting host name verifier

// Install the all-trusting host verifier
HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier()   {
    @Override
    public boolean verify(String hostname,SSLSession arg1) {
        return hostname.equalsIgnoreCase(RestFUL_URLS.DOMAIN) || hostname.equalsIgnoreCase(RestFUL_URLS.DOMAIN) || hostname.equalsIgnoreCase("reports.crashlytics.com") || hostname.equalsIgnoreCase("api.crashlytics.com")  || hostname.equalsIgnoreCase("api.pushy.me")  || hostname.equalsIgnoreCase("mqtt.pushy.me")  || hostname.equalsIgnoreCase("play.google.com" );

    }
});

}