An Android Espresso IdlingResource to monitor Volley requests (bot not working yet..)

gistfile1.java

 public final class VolleyIdlingResource implements IdlingResource {
                private static final String TAG = "VolleyIdlingResource";
                private final String resourceName;

                // written from main thread, read from any thread.
                private volatile ResourceCallback resourceCallback;
                
                private Field mCurrentRequests;
                private RequestQueue mVolleyRequestQueue; 

                public VolleyIdlingResource(String resourceName) throws SecurityException, NoSuchFieldException {
                        this.resourceName = checkNotNull(resourceName);
                        
                        mVolleyRequestQueue = MyApplication.getRequestQueue();
                        
                        mCurrentRequests = RequestQueue.class.getDeclaredField("mCurrentRequests");
                        mCurrentRequests.setAccessible(true);
                }

                @Override
                public String getName() {
                        return resourceName;
                }

                @Override
                public boolean isIdleNow() {
                        try {
                                synchronized (set) {
                                    Set<Request> set = (Set<Request>) mCurrentRequests.get(mVolleyRequestQueue);
                                    int count = set.size();
                                    if (set != null) {
                                        
                                            if (count == 0) {
                                                    Log.d(TAG, "Volley is idle now! with: " + count);
                                                        resourceCallback.onTransitionToIdle();
                                            } else {
                                                    Log.d(TAG, "Not idle... " +count);
                                            }
                                            return count == 0;
                                    }
                                 }
                        } catch (Exception e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                        }
                        Log.d(TAG, "something wrong :D.. ");
                        return true;
                }

                @Override
                public void registerIdleTransitionCallback(ResourceCallback resourceCallback) {
                        this.resourceCallback = resourceCallback;
                }

        }