Android parsing nested jsonArray

Question

I am working with android .I want to parse a nested json array without name.How can I parse these array and store these into a list and the i need to make list of these list.How can I parse these arrays.Thanks in advance.

Did you already load that in a JSONArray in your code? Or do you need that part as well? — LuigiPower
– LuigiPower, Commented Oct 21, 2015 at 7:49

ThomasThiebaud · Accepted Answer · 2015-10-21 08:02:58Z

1

You can do

JSONArray array = new JSONArray(response); //Where response is your json string

Then you can iterate throws this arrays using a for loop

for(int i=0; i<array.length(); i++) {
    //Do something using :
    //array.get(i) or
    //array.getJsonArray(i) or
    //array.getDouble(i) or
    //...
}

Here is the doc for JsonArray

EDIT If you want to convert your nested jsonArray into nested java list you can do (not tested)

List<List<Double>> arrayList = new ArrayList<>();
JSONArray jsonArray= new JSONArray(response).getJSONArray(0);

for(int i=0; i<jsonArray.length(); i++) {
    JsonArray nestedArray = jsonArray.get(i);
    List<Double> nestedList = new ArrayList<>();
    for(int j=0; j< nestedArray.length(); j++) {
        nestedList.add(nestedArray.getDouble(j));
    }
    arrayList.add(nestedList);
}

edited Oct 21, 2015 at 8:02

answered Oct 21, 2015 at 7:55

ThomasThiebaud

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Comments

luiscosta · Accepted Answer · 2015-10-21 08:09:10Z

1

Use Gson with a class like this to parse your array of arrays of arrays:

public class Example extends ArrayList<ArrayList<ArrayList<Double>>> {}

answered Oct 21, 2015 at 8:09

luiscosta

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3 Comments

luiscosta Over a year ago

For some reason you think I would just post an answer without testing.

Tim Over a year ago

Many people post many things without testing. Unless indicated otherwise, I normally assume it was not tested. Anyway I was just curious

luiscosta Over a year ago

You should check this one, It has the same principle. I already had to parse a JSON Array with this format at work, so I already tested it irl. stackoverflow.com/questions/13736122/…

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