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"
        }

    ]
}

But i have dynamic Json string. And i want to remove only the last JSON object — Mehdi
– Mehdi, Commented Sep 24, 2014 at 5:34

mohammedali sunasara · Accepted Answer · 2014-09-24 08:26:11Z

1

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

answered Sep 24, 2014 at 8:26

mohammedali sunasara

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Comments

ZInj · Accepted Answer · 2014-09-24 06:29:48Z

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!

Fahad Ishaque · Accepted Answer · 2014-09-24 05:49:16Z

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, 2014 at 5:49

Fahad Ishaque

1,9361 gold badge17 silver badges21 bronze badges

4 Comments

Mehdi Over a year ago

But bro response is coming from server and i want to remove the last json object everytime.

Fahad Ishaque Over a year ago

It doesn't matter. What JSON library are you using?

Mehdi Over a year ago

So you mean to say it is not possible.

Fahad Ishaque Over a year ago

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);

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