java - Android-volley:如何获取字符串响应值并将其分配到 volley StringRequest 方法之外？

Question

当我在调试器中运行该方法时，数据按预期显示，但是每当我尝试使用它执行任何操作时，parentObject 的值都会返回为 null。

我只是想从服务器获取响应并将其存储为 JSONObject 以便在其他地方重用。

public void jsonParse() {
    String url = "http://178.128.166.68/getUserInfo.php";

    StringRequest request = new StringRequest(Request.Method.POST, url,  new Response.Listener<String>() {
        @Override
        public void onResponse(String response) {
            try {
                /*
                the data appears as expected within the debugger however
                 returns null when i attempt to use it elsewhere
                 */
                parentObject = new JSONArray(response);

            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {

        }
    }) {
        @Override
        protected Map<String, String> getParams() {
            Map<String, String> params = new HashMap<String, String>();
            params.put("phone", phone);
            params.put("password", password);

            return params;
        }
    };
    mQueue.add(request);


}

Answer 1

StringRequest request = new StringRequest(Request.Method.POST, url,  new Response.Listener<String>() {
    @Override
    public void onResponse(String response) {
        try {
            JSONObject obj = new JSONObject(response);
            parentObject = new JSONArray(obj);
            for (int i = 0; i < parentObject.length(); i++) {
                JSONObject parObj = (JSONObject) parArray.get(i);
                ModelClass modelClass = new ModelClass()// you have to create a model 
                modelClass.set1Parameter(parObj.getString("1Parameter"));
                modelClass.set2Parameter(parObj.getString("2Parameter"));
                arrayList.add(modelClass)//In your arraylist save the data


            }



        } catch (JSONException e) {
            e.printStackTrace();
        }
    }