android - Issue creating JSONObject with Instagram API response -

i have made call instagram endpoint images contain tag #selfie. issue having in dealing response. massive json response, , need "thumbnail" image "url".

how can go structuring object data in jsonobject?

public static class fetchtaggedimages extends asynctask<string, void, jsonarray> {       @override     protected jsonarray doinbackground(string... params) {         string maccesstoken = params[0];         string url = (api_url + "?access_token=" + maccesstoken);         httpget httpget = new httpget(url);         httpclient httpclient = new defaulthttpclient();         string instagramjsonresponse = null;         jsonarray responsearray = null;         httpresponse postresponse;          try {             postresponse = httpclient.execute(httpget);             instagramjsonresponse = entityutils.tostring(postresponse                     .getentity());             jsonobject jsonobject = new jsonobject(instagramjsonresponse);             string thumbnail = jsonobject.getstring("url");              responsearray = new jsonarray(instagramjsonresponse);             log.e("response", instagramjsonresponse);         } catch (exception ex) {             ex.printstacktrace();         }          return responsearray;     }      @override     protected void onpostexecute(jsonarray response) {         // todo auto-generated method stub         super.onpostexecute(response);         log.e("onpostexecute", "onpostexecute");          jsonobject jsonobject;       } } 

here sample of json string

    {      "data":[         {            "tags":[               "summer",             "love",             "tagstagram",             "colorful",             "instalike",             "selfie",             "swag",             "instago",             "igers",             "follow4follow",             "follow",             "instadaily",             "friends",             "style",             "webstagram",             "look",             "instafollow",             "iphoneonly",             "instagood",             "amazing",             "instacool",             "bestoftheday",             "fun",             "followme",             "like4like",             "picoftheday",             "photooftheday"          ],          "location":null,          "link":"http:\/\/instagram.com\/p\/wflirqpxaw\/",          "user_has_liked":false,          "caption":{               "id":"866263615190011927",             "created_time":"1417486691",             "text":"first contest of season 🏄",             "from":{                  "id":"507279035",                "profile_picture":"https:\/\/instagramimages-a.akamaihd.net\/profiles\/profile_507279035_75sq_1397511894.jpg",                "username":"jdbv45",                "full_name":"juan basave"             }          },          "type":"image",          "id":"866263614401482774_507279035",          "likes":{               "data":[                  {                     "id":"956576929",                   "profile_picture":"https:\/\/igcdn-photos-e-a.akamaihd.net\/hphotos-ak-xfa1\/10802992_1561400387426348_1634151041_a.jpg",                   "username":"don_assi2014",                   "full_name":"-ali assi-"                },                {                     "id":"520771011",                   "profile_picture":"https:\/\/igcdn-photos-b-a.akamaihd.net\/hphotos-ak-xfa1\/1889350_1565133803717465_1353157813_a.jpg",                   "username":"michelle.y6",                   "full_name":"michelle y"                },                {                     "id":"873300277",                   "profile_picture":"https:\/\/igcdn-photos-g-a.akamaihd.net\/hphotos-ak-xfa1\/10817804_1543101285933854_123980756_a.jpg",                   "username":"ayah_shahbanderr",                   "full_name":"ayah"                },                {                     "id":"199966711",                   "profile_picture":"https:\/\/igcdn-photos-a-a.akamaihd.net\/hphotos-ak-xfa1\/10617174_587781691338392_1164910966_a.jpg",                   "username":"elijah_reissman_",                   "full_name":"elijah reissman"                }             ],             "count":13          },          "images":{               "low_resolution":{                  "url":"http:\/\/scontent-b.cdninstagram.com\/hphotos-xap1\/t51.2885-15\/1739913_754468237961901_1189124740_a.jpg",                "height":306,                "width":306             },             "standard_resolution":{                  "url":"http:\/\/scontent-b.cdninstagram.com\/hphotos-xap1\/t51.2885-15\/1739913_754468237961901_1189124740_n.jpg",                "height":640,                "width":640             },             "thumbnail":{                  "url":"http:\/\/scontent-b.cdninstagram.com\/hphotos-xap1\/t51.2885-15\/1739913_754468237961901_1189124740_s.jpg",                "height":150,                "width":150             }          },          "users_in_photo":[             ],          "created_time":"1417486691",          "user":{               "id":"507279035",             "profile_picture":"https:\/\/instagramimages-a.akamaihd.net\/profiles\/profile_507279035_75sq_1397511894.jpg",             "username":"jdbv45",             "bio":"",             "website":"",             "full_name":"juan basave"          },          "filter":"mayfair",          "comments":{               "data":[                  {                     "id":"866282245801841449",                   "created_time":"1417488912",                   "text":"#tagstagram #love #friends @tagstagram #photooftheday #selfie #amazing #followme #follow4follow #like4like #look #instalike #igers #picoftheday #instadaily #instafollow #fun #iphoneonly #instagood #bestoftheday #instacool #instago #summer #follow #webstagram #colorful #style #swag",                   "from":{                        "id":"507279035",                      "profile_picture":"https:\/\/instagramimages-a.akamaihd.net\/profiles\/profile_507279035_75sq_1397511894.jpg",                      "username":"jdbv45",                      "full_name":"juan basave"                   }                }             ],             "count":1          },          "attribution":null       }, 

"thumbnail" in "images" object, , "images" object in first object of "data" array.

so need obtain "data" jsonarray first, access each array item, find "images" object item, , can access "thumbnail" object.

your code seems access "url" in top level object not have "url" property.

if you'd access via jsonobject framework, should implement code this:

public string geturl(jsonobject response) throws jsonexception {   jsonarray data = response.getjsonarray("data");   jsonobject object = data.getjsonobject(0);   jsonobject images = object.getjsonobject("images");   jsonobject thumbnail = images.getjsonobject("thumbnail");   return thumbnail.getstring("url"); } 

if need collection of url, need iterate accessing data objects this:

jsonarray data = response.getjsonarray("data"); (int = 0; < data.length(); i++) {   jsonobject object = data.getjsonobject(0);   // ... } 

this basic function dealing json string android framework provides. if feel long way go, consider using gson or jackson json processor.