Remove JSONobject from JSONarray in Android

Question

I have Dynamic JSON String i want to remove the last JSON object from the JSONARRAY in android. here is my dynamic JSON String in android. My json string is

("{\"findAllUsersResponse\": "+arguments[0].toString()+"}");

    {
    "findAllUsersResponse": [
        {
            "id": "kicJw2whXyuGjbNo936L",
            "name": "Fghhjj",
            "udid": "2AA120E3-7478-4AD4-9C68-9C0920669B84"
        },
        {
            "id": "NEF45TWNI6-Uc_r7938R",
            "name": "ssss",
            "udid": "1DD083C2-7F1D-4BB3-9AB9-691A5FD251CC"
        },
        {
            "id": "xuXY7Ah2-O-jL4Zk939D",
            "name": "Test",
            "udid": "A892E0AB-6732-4F42-BEFA-3157315E9EE4"
        },
        {
            "id": "w1FnBz8B9ciWUzBk939k",
            "name": "Aditi",
            "udid": "A892E0AB-6732-4F42-BEFA-3157315E9EE4"
        }

    ]
}

http://stackoverflow.com/questions/19837532/remove-json-object-from-jsonarray-jettison — Aditya Gupta, Sep 24 '14 at 05:32
But i have dynamic Json string. And i want to remove only the last JSON object — Mehdi, Sep 24 '14 at 05:34

score 1 · Answer 1 · answered Sep 24 '14 at 06:29

Was facing a similar problem. There are no methods in the JSONarray object to get what you want. You could make a function to remove it. Saw this solution somewhere.

   public static JSONArray remove(final int index, final JSONArray from) {
    final List<JSONObject> objs = getList(from);
    objs.remove(index);

    final JSONArray jarray = new JSONArray();
    for (final JSONObject obj : objs) {
        jarray.put(obj);
    }

    return jarray;
}

public static List<JSONObject> getList(final JSONArray jarray) {
    final int len = jarray.length();
    final ArrayList<JSONObject> result = new ArrayList<JSONObject>(len);
    for (int i = 0; i < len; i++) {
        final JSONObject obj = jarray.optJSONObject(i);
        if (obj != null) {
            result.add(obj);
        }
    }
    return result;
}

Cheers!

score 1 · Accepted Answer · answered Sep 24 '14 at 08:26

If your String is not going to change and you only want last object to be deleted use substring and create new string.

 String finduserjson=  "{\"findAllUsersResponse\": "+arguments[0].toString()+"}");
    String t = finduserjson.substring(finduserjson.indexOf("{"), finduserjson.lastIndexOf(",{"));
    String j = "]}";
    finduserjson = t+j;

Cheers

score 0 · Answer 3 · answered Sep 24 '14 at 05:49

0

If you are using JSON rather than GSON or JACKSON, then you cannot call .remove() method because you would not find it there.

Best thing you can do is, re-create a new JSONArray and add required JSONObjects in it.

answered Sep 24 '14 at 05:49

Fahad Ishaque

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But bro response is coming from server and i want to remove the last json object everytime. – Mehdi Sep 24 '14 at 05:50
It doesn't matter. What JSON library are you using? – Fahad Ishaque Sep 24 '14 at 05:52
So you mean to say it is not possible. – Mehdi Sep 24 '14 at 06:00
What I am saying is that, with JSON.org library this cannot be done. If you are using some other library (which you actually should), then all you need to do is call something like foo.remove(foo.size() - 1); – Fahad Ishaque Sep 24 '14 at 06:02

Remove JSONobject from JSONarray in Android

3 Answers3