Java convert a Json string to an array

Question

I have a Json String and I am trying to convert it to an array in Java.

public void DisplaySubjects(String subjects)
     {
         JSONObject jsonResponse;
         jsonResponse = new JSONObject(subjects));

Thats as far as I get.I'm not even sure if I have to create a object first.

What I will need to do eventuallay is attach it to a ArrayAdapter in an android app.

Thanks

Solution 1

Something like this:

ArrayList<String> jsonStringToArray(String jsonString) throws JSONException {

    ArrayList<String> stringArray = new ArrayList<String>();

    JSONArray jsonArray = new JSONArray(jsonString);

    for (int i = 0; i < jsonArray.length(); i++) {
        stringArray.add(jsonArray.getString(i));
    }

    return stringArray;
}

Solution 2

You need to make JSON object first.

For example,

JSONObject jsonObject = new JSONObject(resp);

jsonObject may contains other JSON Objects or JSON array.

How to convert the JSON depends on the String.

There is a complete example with some explanation about JSON String to JSON array can be found at http://www.hemelix.com/JSONHandling.

Solution 3

You could try something like:

new JSONArray(jsonString)

or if it is a property:

jsonObject.getJSONArray(propertyName)