Convert json object into multiple arrays android

Question

I have a json object being downloaded from my server that returns a result in the following format:

{"Bookname":["Alive-O","All Write Now ","Bun Go Barr 1","Planet Maths","Small World"],"SubjectName":["Religion","English","Irish","Maths","Science"]}

What I want to do is turn that into two different arrays to use on the android device.

Here is the request and the looking for the response within my asynctask

        String[] BookName;
        String[] BookSubject;
        try {
            post.setEntity(new UrlEncodedFormEntity(dataToSend));
            HttpResponse httpResponse = client.execute(post);

            HttpEntity entity = httpResponse.getEntity();
            String result = EntityUtils.toString(entity);
            JSONObject jObject = new JSONObject(result);


        }

Just wondering how I store the above result in the two arrays?

Mukesh Rana · Accepted Answer · 2016-02-10 21:43:42Z

1

It would be something like this

    JSONObject jsonObject = new JSONObject(result);

    // for getting booknames
    JSONArray jsonArray = jsonObject.getJSONArray("Bookname");
    bookName = new String[jsonArray.length()]
    for (int i = 0; i < jsonArray.length(); i++) {
        bookName[i] = jsonArray.getString(i);
    }

    // for getting subjectnames
    jsonArray = jsonObject.getJSONArray("SubjectName");
    bookSubject = new String[jsonArray.length()]
    for (int i = 0; i < jsonArray.length(); i++) {
        bookSubject[i] = jsonArray.getString(i);
    }

Hope it will help..!!

answered Feb 10, 2016 at 21:43

Mukesh Rana

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1 Comment

Eoin Ó Cribín Over a year ago

Exactly wanted just looking for syntax. Thanks a lot :)

CommonsWare · Accepted Answer · 2016-02-10 21:41:32Z

1

Given that you chose JSONObject, that your JSON is that unusual structure, and that you want to mirror that structure in your Java:

Step #1: Call getJSONArray() on jObject() twice, to get the two JSONArray objects (Bookname and SubjectName)

Step #2: Allocate each String[] to be the proper length (call length() on the JSONArray)

Step #3: For each JSONArray, loop over the array indices (0 to length()) and call getString() for each index, assigning it to the appropriate index in the associated String[]

answered Feb 10, 2016 at 21:41

CommonsWare

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