Question

When i call server its response is based of json object. Actually, I know how to parse JSON object but this response is strange for me. Server response is:

{"body":"Not Available!","clazz":"SoccerMatchPreview","id":{"inc":-2024241794,"machine":415106952,"new":false,"time":1337861978000,"timeSecond":1337861978},"publishedDate":"2012-06-08 17:00:00 +0100","refKey":"SoccerMatchPreview_4fb897be18be8b87f9117595","title":"Poland vs Greece"}

Those Information that I need are body, publishedDate, refKey and title. The code that i have written based of JSON object is this:

JSONObject jObject = new JSONObject(response);
                    JSONArray contestantObjects = jObject.getJSONArray("id");
                    for(int i=0; i<contestantObjects.length(); i++) {
                        mPreview.setBody(contestantObjects.getJSONObject(i).getString("body").toString());
                        mPreview.setPublishedDate(contestantObjects.getJSONObject(i).getString("publishedDate").toString());
                        mPreview.setRefKey(contestantObjects.getJSONObject(i).getString("refKey").toString());
                        mPreview.setTitle(contestantObjects.getJSONObject(i).getString("title").toString());
                    }

But because it doesn’t have “[]” I think it’s not JSON object. therefore, I wrote another code based JSON array.

JSONArray contestantObjects = new JSONArray(response);
                    for(int i=0; i<contestantObjects.length(); i++) {
                        mPreview.setBody(contestantObjects.getJSONObject(i).getString("body").toString());
                        mPreview.setPublishedDate(contestantObjects.getJSONObject(i).getString("publishedDate").toString());
                        mPreview.setRefKey(contestantObjects.getJSONObject(i).getString("refKey").toString());
                        mPreview.setTitle(contestantObjects.getJSONObject(i).getString("title").toString());
                    }

but result is same and Logcat shows:

Value {“id”:{“timeSecond”:1337861978,”time”:1337861978000,”new”:false,”machine”:415106952,”inc”:-2024241794},”body”:”Not Available!”,”title”:”Poland vs Greece”,”publishedDate”:”2012-06-08 17:00:00 +0100″,”clazz”:”SoccerMatchPreview”,”refKey”:”SoccerMatchPreview_4fb897be18be8b87f9117595″} of type org.json.JSONObject cannot be converted to JSONArray

any suggestion would be appreciated. Thanks

Answer 1

JSONArray contestantObjects = jObject.getJSONArray("id");

Your error is here, id is itself a complex object, not an array.

"id":{"inc":-2024241794,"machine":415106952,"new":false,"time":1337861978000,"timeSecond":1337861978}

Therefore, after getting the id JSON object, you should be able to get the individual attributes, e.g. inc, machine, new, time, and timeSecond.

JSONObject idObject = ...getJSONObject("id");
String machine = idObject.get("machine");

A JSON array data structure would have looked like this: [] signifies an array.

For example, "Animals":["Pig", "Cat", "Dog"].

In another example, it can also be an Array of complex objects, "Animals":[{"name":"AAA", "blood":"A"}, {"name":"BBB", "blood":"B"}].

EDIT: Here is a good JSON visualizer i would recommend.

http://jsonviewer.stack.hu/