java - how to parse a JSON string which is inside a array -


i have json of following format:

{     "result": {         "question": "barack obama vs mitt romney?",         "option": [             "barack obama",             "mitt romney",             "other"                    ],         "percentage": [             20,             40,             80                       ]                } }

and using following code parse giving null pointer exception @ option array.

jsonparser jparser = new jsonparser();

                    jsonobject json = jparser.getjsonobjectfromurl(url);                     log.e("json",json.tostring());                      log.e("-------url-------", ""+url);                           string resultstr = json.getstring("result");                          log.e("result string ",resultstr);                          jsonobject jsonobject2 = new jsonobject(resultstr);                           string question_string = jsonobject2.getstring("question");                          log.e("question string ",question_string);                           string option_str = jsonobject2.getstring("option");                           jsonarray optionarray = new jsonarray(option_str);                         log.d("option array", string.valueof(optionarray.length()));

you need json array way:

jsonarray optionarray = jsonobject2.getjsonarray("option"); log.d("option array", string.valueof(optionarray.length()));

check http://www.androidhive.info/2012/01/android-json-parsing-tutorial/


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