Java代码不断跳过JsonObjectRequest

Question

我正在尝试制作一个可以扫描条形码并查找JSON文件中与之相关的值的应用。唯一的问题是它一直跳过JsonObjectRequest方法。

这与此处的Json data array request keeps skipping onResponse非常相似。除了我不使用变量adaptermake。

public void jsonParse(String isbn) {
        final String subisbn = isbn.substring(3,12);
//        final List<String> li = new ArrayList<String>();
        String url = "https://raw.githubusercontent.com/5Volts/FullSpeed/master/DA_ISBN2CLASS2.json";

// I put a breakpoint and found that this is where the code is skipped all the way down to mqueue
        JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, url, null,
                new Response.Listener<JSONObject>() {
                    @Override
                    public void onResponse(JSONObject response) {
                        try {
                            Log.d("Debugline",subisbn);
                            JSONArray jsonArray = response.getJSONArray(subisbn);

                            for (int i = 0; i < jsonArray.length(); i++) {
                                JSONObject obj = jsonArray.getJSONObject(i);

//                                li.add(nbook);
//                                mTextViewResult.setText(nbook);
//                                mTextViewResult.append(nbook+"\n");
                            }
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    }
                }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                error.printStackTrace();
            }
        });

        mQueue.add(request);

    }

    @Override
    public void onDetectedQrCode(Barcode barcode) {
        if (barcode != null) {
            jsonParse(barcode.rawValue);
            Intent intent = new Intent();
            intent.putExtra(BarcodeObject, barcode);
//            Log.d("Debug",barcode.rawValue);
//            System.out.println(barcode.rawValue);
            setResult(CommonStatusCodes.SUCCESS, intent);
            finish();

        }

    }