Parse nested JSONObject and JSONArray in android

On click of setOnItemSelectedListener of your listView set adapter for another listView.

I worked on similar scenarion in my case I was getting json response for departments and corresponding Team for departments. Onclick of departments I have to show team list for selected department.I have used spinners for displaying items .Here is the sample code for that :

        ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,
                    android.R.layout.simple_spinner_item, mDeptmntList);
            dataAdapter
                    .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
            mDeptmntSpinner.setAdapter(dataAdapter);
            mDeptmntSpinner
                    .setOnItemSelectedListener(new OnItemSelectedListener() {

                        public void onItemSelected(AdapterView<?> arg0,
                                View arg1, int arg2, long arg3) {
                            int index = arg0.getSelectedItemPosition();
                            mSelectedDeptId = index;

                            ArrayAdapter<String> teamAdapter = new ArrayAdapter<String>(
                                    getApplicationContext(),
                                    android.R.layout.simple_spinner_item, mList
                                            .get(index));
                            teamAdapter
                                    .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
                            mTeamSpinner.setAdapter(teamAdapter);
                        }

                        public void onNothingSelected(AdapterView<?> arg0) {

                        }
                    });

this was my json response :

{
   "departmentId":"1",
   "departmentname":"HR",
   "teamlist":[
      {"teamName":"HR_S",
      "teamName":"HR_P"}
   ]
}


Code for fetching this json is :
        JSONArray array = new JSONArray(JSON response);
        JSONObject obj;
        mDeptmntList = new ArrayList<String>();
        mTeam = new ArrayList<ArrayList<Integer>>();
        for (int i = 0; i < array.length(); i++) {
            obj = (JSONObject) array.get(i);
            mDeptmntList.add(i, obj.getString("departmentname"));
            JSONArray teamList = obj.getJSONArray("teamlist");
            int count = teamList.length();
            for (int j = 0; j < count; j++) {
                mTeamTempId.add(j,teamList.getJSONObject(j).getString("teamName"));
            }
        }