new OkHttpClient.Builder() .certificatePinner(new CertificatePinner.Builder() .add("publicobject.com", “sha256/{ hash value }”) .build()) .build(); Request request = new Request.Builder() .url("https://publicobject.com/robots.txt") .build(); Response response = client.newCall(request).execute(); } PinningͷظݶΛઃఆෆՄ