Android Volley DefaultRetryPolicy 无法按预期工作

Question

所以，我有这个 Volley PUT 请求:

private boolean syncCall(JSONObject jsonObject, final VolleyCallback
        callback) {

    final ProgressDialog progDailog = new ProgressDialog(context);

    final Boolean[] success = {false};

    progDailog.setMessage("...");
    progDailog.setIndeterminate(false);
    progDailog.setProgressStyle(ProgressDialog.STYLE_SPINNER);

    progDailog.setCancelable(false);
    progDailog.show();

    final SharedPreferences prefs = PreferenceManager
            .getDefaultSharedPreferences(context);

    RequestQueue queue = Volley.newRequestQueue(context, new HurlStack());

    final String token = prefs.getString("token", null);

    String URL = Constants.getUrlSync();
    String param1 = String.valueOf(prefs.getInt("pmp", 1));
    String param2 = String.valueOf(prefs.getInt("ei", 1));

    URL = URL.replace("[x]", param1);
    URL = URL.replace("[y]", param2);

    //pegar id pmp e IE corretas
    JsonObjectRequest jsObjRequest = new JsonObjectRequest(Request
            .Method.PUT, URL, jsonObject,
            new Response.Listener<JSONObject>() {
                @Override
                public void onResponse(JSONObject response) {
                    callback.onSuccess(response + "");
                    success[0] = true;
                    progDailog.dismiss();
                }
            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {

                    callback.onFailure(error);
                    tokenFailure(error);
                    success[0] = false;
                    progDailog.dismiss();
                }
            }) {


        @Override
        public Map<String, String> getHeaders() throws
                AuthFailureError {

            HashMap<String, String> headers = new HashMap<>();
            headers.put("Token", token);

            return headers;
        }
    };

    int socketTimeout = 30000;
    RetryPolicy policy = new DefaultRetryPolicy(socketTimeout, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);

    jsObjRequest.setRetryPolicy(policy);


    queue.add(jsObjRequest);

    return success[0];
}

我的问题是我发送了一个非常大的 JSON，所以默认的 5 秒超时是不够的。因此，我尝试将超时增加到 30 秒，并使用 DefaultRetryPolicy 来增加重试次数。

问题是，它会在 5 秒内保持超时，甚至不会重试一次!

重试时我必须要有监听器或回调吗？我对 DefaultRetryPolicy 做错了什么？请帮忙，这个问题让我抓狂......

Answer 1

是否需要使用 DefaultRetryPolicy？

因为您可以定义自己的。

取而代之的是:

RetryPolicy policy = new DefaultRetryPolicy(socketTimeout,     
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,     
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);

试试这个:

jsObjRequest.setRetryPolicy(new RetryPolicy() {
    @Override
        public int getCurrentTimeout() { 
            // Here goes the new timeout
            return mySeconds; 
        }
        @Override
        public int getCurrentRetryCount() { 
            // The max number of attempts
            return myAttempts; 
        }
        @Override
        public void retry(VolleyError error) throws VolleyError {
            // Here you could check if the retry count has gotten
            // To the max number, and if so, send a VolleyError msg
            // or something    
        }
    });