Converting arraylist of custom class to JSONArray

Question

I didn't expect this is that complex. But I can't figure out how I can convert my arraylist of custom class to a JSONArray. I understand there is no direct method to do that. So I made arraylist of JSONObjects from my arraylist. Now in order to save this into a JSON file, how can I convert the arraylist of JSONObjects to JSONArray?

Kurtis Nusbaum · Accepted Answer · 2011-11-23 19:00:53Z

2

Like this:

JSONArray toReturn = new JSONArray();
for(JSONObject object : yourJSONArrayList){
    toReturn.put(object);
}

toReturn will then be a JSONArray that has all the JSONObjects from your arraylist of JSONObjects in it.

answered Nov 23, 2011 at 19:00

Kurtis Nusbaum

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1 Comment

Tae-Sung Shin Over a year ago

Laughing at myself... As a old .NET developer, I searched add or insert. Thanks!

riotopsys · Accepted Answer · 2011-11-23 20:36:44Z

1

Give Gson Library a try, all that custom json conversion code goes away.

answered Nov 23, 2011 at 20:36

riotopsys

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1 Comment

Tae-Sung Shin Over a year ago

I thought about it before but since our app has relatively large file size, I didn't want to add another 200K. But thanks anyway.

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