Android okhttp3 GET 简单请求

private void getAsynHttp() {
    OkHttpClient okHttpClient = new OkHttpClient();
    Request.Builder builder = new Request.Builder().url("http://193.112.100.126/json/kaoyaoshi/user_getUserOrderDetails.php");
    builder.method("GET", null);
    Request request = builder.build();
    Call call = okHttpClient.newCall(request);
    call.enqueue(new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {

        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {
            if (null !=  response.cacheResponse()) {
                String str = response.cacheResponse().toString();
                Log.i("lalalalala", "cache----" + str);
                } else {
                response.body().string();
                String str = response.networkResponse().toString();
                Log.i("lalalalala", "network-------" + str);
            }

            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    Log.i("lalalalala", "ok-------" );
                    Toast.makeText(getApplicationContext(),"请求成功", Toast.LENGTH_LONG).show();
                }
            });
        }
    });
}