LoadingActivity.java

LoadingActivity.java

private AsyncHttpClient asyncHttpClient;
public class LoadingActivity extends Activity {
       private CountingIdlingResource idlingResource = EspressoIdlingResource.getCountingIdlingResource();
       @Override
       protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activiy_loading_screen);
            asyncHttpClient = new AsyncHttpClient();
            // increment the counter before calling any API.
            idlingResource.increment();
            asyncHttpClient.get(LoadingActivity.this, url, configurationCallback);
}

private JsonHttpResponseHandler configurationCallback = = new JsonHttpResponseHandler() {

        @Override
        public void onSuccess(int statusCode, Header[] headers, JSONObject jsonObject) {
            // decrement the counter when callback is invoked.
            idlingResource.decrement();
            Intent intent = new Intent(LoadingActivity.this, MainActivity.class);
            startActivity(intent);    
        }
    }
}

@VisibleForTesting
public IdlingResource getCountingIdlingResource(){
      return EspressoIdlingResource.getCountingIdlingResource();
}