how I can access data from a JSONArray in Android?

Question

how I can access data from a JSONArray? It is this and contains this information:

"deadlines": [
{
    "start": 1439539200,
    "end": 1439542800
},
{
    "start": 1440144000,
    "end": 1440147600
},
{
    "start": 0,
    "end": 0
}
]

I need to have in a String tag each item "start". Thanks

EDIT

My code is this:

JSONArray array = moduleObject.specialForcedConf;
// array = [{"deadlines":[{"start":1439539200,"end":1439542800},{"start":1440144000,"end":1440147600},{"start":0,"end":0}]}]

                    for (int j=0; j < array.length(); j++)
                    {
                        try
                        {
                            JSONObject obj = array.getJSONObject(j);
                            String start = obj.getString("start"); 
                            String end = obj.getString("end"); 

                            Log.e("", "start = " + start);
                        }
                        catch (JSONException e)
                        {
                            Log.e("", "error = " + e.getMessage());
                        }
                    }

I get this error:

"error = No value for start"

http://stackoverflow.com/questions/9605913/how-to-parse-json-in-android — koutuk, Aug 13 '15 at 10:38
It seems you'll find an answer to a very similar question [here](http://stackoverflow.com/questions/17136769/how-to-parse-jsonarray-in-android). Hope it will help you. — incoherency, Aug 13 '15 at 10:40

score 0 · Answer 1 · edited Aug 13 '15 at 11:29

0

JSONArray ja = new JSONArray(yourjsondata));
for (int i = 0; i < ja.length(); i++) {
    JSONObject jo_feed = new JSONObject(ja.get(i).toString());
    String start = jo_feed.getString("start");
}

edited Aug 13 '15 at 11:29

Mayank Jain

5,663
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answered Aug 13 '15 at 10:39

Shreenivas Chikati

319
2
11

Rohit5k2 · Accepted Answer · 2015-08-13T11:12:29.017

Do this

JSONArray array = moduleObject.specialForcedConf;
// array = [{"deadlines":[{"start":1439539200,"end":1439542800},{"start":1440144000,"end":1440147600},{"start":0,"end":0}]}]

JSONArray jArray = array.getJSONObject(0).getJSONArray("deadlines");
for (int i = 0; i < jArray.length(); i++) // assuming your array is jArray
{
    try 
    {
        JSONObject obj = jArray.getJSONObject(i);
        String start= obj.getString("start"); // store in an ArrayList
        String end = obj.getString("end");  //// store in an ArrayList
    }
    catch (JSONException e) 
    {
        // Error
    }
}

score 0 · Answer 3 · edited Aug 13 '15 at 11:04

0

Try this:

StringBuilder sb = new StringBuilder();

JSONArray arr = new JSONArray("deadlines");
for(int i=0;i<arr.length;i++){

  JSONObject obj = arr.getJSONObject(i);

  sb.append(obj.get("start").toString());

  sb.append(",");

}

String strStartTag = sb;

edited Aug 13 '15 at 11:04

perror

7,071
16
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answered Aug 13 '15 at 10:46

vinita jain

163
2
18

score 0 · Answer 4 · answered Aug 13 '15 at 10:48

JSONArray mJsonArray=new JSONArray("Deadlines");

for(int i=0;i<mJsonArray.length();i++){
 JSONObject mJsonObject=new JSONObject(mJsonArray.get(i).toString));
 String start = mJsonObject.optString("start",""); 
 String end = mJsonObject.optString("end",""); 
}

how I can access data from a JSONArray in Android?

4 Answers4