Getting JSONObject from JSONArray

Question

I am in a bit of a fix regarding the JSONObject that I am getting as a response from the server   jsonObj   new JSONObject resultString               JSONObject sync reponse   jsonObj getJSONObject  syncresponse                String synckey string   sync reponse getString  synckey                JSONArray createdtrs array   sync reponse getJSONArray  createdtrs                JSONArray modtrs array   sync reponse getJSONArray  modtrs                JSONArray deletedtrs array   sync reponse getJSONArray  deletedtrs                String deleted string   deletedtrs array toString       syncresponse    synckey   2011-09-30 14 52 00   createdtrs      modtrs      deletedtrs     companyid   UTB17   username   DA   date   2011-09-26   reportid   31341      as you can see in the response that I am getting I am parsing the JSONObject and creating syncresponse   synckey  as a JSON object   createdtrs  modtrs  deletedtrs as a JSONArray  I want to access the JSONObject from deletedtrs  so that I can split them apart and use the values  i e I want to extract companyid  username  date etc   How can I go about this    Thanks for your input

User · Answer

Make use of Android Volly library as much as possible  It maps your JSON reponse in respective class objects  You can add getter setter for that response model objects  And then you can access these JSON values parameter using  operator like normal JAVA Object  It makes response handling very simple

User · Answer

When using google gson library   var getRowData           dayOfWeek    Sun        date    11-Mar-2012        los    1        specialEvent            lrv    0            dayOfWeek    Mon        date            los    2        specialEvent            lrv    0 16           JsonElement root   new JsonParser   parse request getParameter  getRowData          JsonArray  jsonArray   root getAsJsonArray         JsonObject  jsonObject1   jsonArray get 0  getAsJsonObject         String dayOfWeek   jsonObject1 get  dayOfWeek   toString         when using jackson library      JsonFactory f   new JsonFactory                  ObjectMapper mapper   new ObjectMapper              JsonParser jp   f createJsonParser getRowData                advance stream to START ARRAY first            jp nextToken                 and then each time  advance to opening START OBJECT          while  jp nextToken      JsonToken START OBJECT                Map lt String Object gt  userData   mapper readValue jp  Map class               userData get  dayOfWeek                   process               after binding  stream points to closing END OBJECT

User · Answer

JSONArray deletedtrs array   sync reponse getJSONArray  deletedtrs     for int i   0  deletedtrs array length    i                  JSONObject myObj   deletedtrs array getJSONObject i

User · Answer

start from  JSONArray deletedtrs array   sync reponse getJSONArray  deletedtrs      you can iterate through JSONArray and use values directly or create Objects of your own type which will handle data fields inside of each deletedtrs array member  Iterating  for int i   0  i  lt  deletedtrs array length    i         JSONObject obj   deletedtrs array getJSONObject i       Log d  Item no   i  obj toString             create object of type DeletedTrsWrapper like this     DeletedTrsWrapper dtw   new DeletedTrsWrapper obj           String company id   obj getString  companyid           String username   obj getString  username           String date   obj getString  date           int report id   obj getInt  reportid        Own object type  class DeletedTrsWrapper        public String company id      public String username      public String date      public int report id       public DeletedTrsWrapper JSONObject obj           company id   obj getString  companyid            username   obj getString  username            date   obj getString  date            report id   obj getInt  reportid

User · Answer

Here is your json          syncresponse             synckey    2011-09-30 14 52 00            createdtrs                          modtrs                          deletedtrs                             companyid    UTB17               username    DA               date    2011-09-26               reportid    31341                            and it s parsing   JSONObject object   new JSONObject result   String syncresponse   object getString  syncresponse    JSONObject object2   new JSONObject syncresponse   String synckey   object2 getString  synckey    JSONArray jArray1   object2 getJSONArray  createdtrs    JSONArray jArray2   object2 getJSONArray  modtrs    JSONArray jArray3   object2 getJSONArray  deletedtrs    for int i   0  i  lt  jArray3  length    i         JSONObject object3   jArray3 getJSONObject i      String comp id   object3 getString  companyid       String username   object3 getString  username       String date   object3 getString  date       String report id   object3 getString  reportid

User · Answer

JSONArray objects have a function getJSONObject int index   you can loop through all of the JSONObjects by writing a simple for-loop   JSONArray array  for int n   0  n  lt  array length    n          JSONObject object   array getJSONObject n          do some stuff

User · Answer

syncresponse    synckey   2011-09-30 14 52 00   createdtrs      modtrs      deletedtrs     companyid   UTB17   username   DA   date   2011-09-26   reportid   31341      The get companyid  username  date   jsonObj syncresponse deletedtrs 0  companyid jsonObj syncresponse deletedtrs 0  username jsonObj syncresponse deletedtrs 0  date

[java] Getting JSONObject from JSONArray

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