How do I get the key for each object in a dynamic JSON array?

Question

How do I parse this object and get the name (key) for each person?

I can't just do String name = jsonObject.getString("name"); because the name is the key, not the value.

JSONObject jsonObject =

{
    "data" :
    [{
        "Bob": {
            "last-name": "Jorgenson",
            "email": "b@b.com",
        },

        "Steve": {
            "last-name": "Bobson",
            "email": "steve@juno.com",
        },
    }],
    "statusCode" : 200
}

So what's the best way to parse it with the dynamically-named keys?

Update:

jArray was taken from the jsonObject which is now represented. However, I was having trouble implementing answers because of type errors related to trying to get jArray from jsonObject.get("data")

Disclaimer

Yes, this is pretty basic stuff. The dynamic bit is throwing me off though. There are many similar questions, but they usual involve a number of other factors. I can successfully download the data and store it in the JSONObject jsonObject above. I just need to figure out how to parse the data as outlined above.

`JSONObject` should have a `keys` method or something similar. Just iterate over the result. — Sotirios Delimanolis, Jul 10 '14 at 04:44
possible duplicate of [java iterate over JSONObject?](http://stackoverflow.com/questions/9151619/java-iterate-over-jsonobject) — chiuki, Jul 10 '14 at 04:50

score 5 · Accepted Answer · answered Jul 10 '14 at 04:52

5

    Iterator<String> keys = jsonObject.keys();
    while (keys.hasNext()) {
        String key = keys.next();
    }

answered Jul 10 '14 at 04:52

JRomero

4,878
1
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Beautifully succinct answer. Does the iterator skip item[0] because it starts with keys.next()? When I log key at each part of the while loop, it only Logs n-1 of the elements in the data (indicating it may be skipping an item at the beginning or the end.) – mrgnw Jul 11 '14 at 01:32
That's odd. Iterators always starts *before* the first item. Maybe you should post that as a new question... – JRomero Jul 11 '14 at 13:06
I'll double check and make sure I didn't mess anything up. Thanks! – mrgnw Jul 11 '14 at 19:25

score 2 · Answer 2 · answered Jul 10 '14 at 04:50

2

The keys() method of JSONObject might be the method you're looking for.

answered Jul 10 '14 at 04:50

Michael Barz

276
2
11

score 0 · Answer 3 · answered Jul 10 '14 at 04:58

0

you can use this:

for(int i=0;i<jsonArray.length();i++){
    JSONObject temp = jsonArray.getJSONObject(i);
    String name;
    Iterator<String> keys = temp.keys();
    if(keys.hasNext())
        name = keys.next();
}

answered Jul 10 '14 at 04:58

SMR

6,628
2
35
56

How do I get the key for each object in a dynamic JSON array?

Update:

Disclaimer

3 Answers3