删除JSONArray中的某个元素

 public void removeThisGarden(String gardenId){
         try {
             List list = new ArrayList();
             String gardens = SharePreferenceUtil.getStringDataByKe(this,"gardens",null);
             gardenArray = new JSONArray(gardens);
             for (int i = 0;i
                 list.add(gardenArray.get(i));
                 JSONObject gardenJson = (JSONObject) gardenArray.get(i);
                 if (gardenId.equals(gardenJson.getString("gardenId"))){
                     list.remove(i);
                 }
                 gardenArray = new JSONArray(list);
                 SharePreferenceUtil.saveStringDataToSharePreference(this,"gardens",gardenArray.toString());
             }
         }catch (JSONException e){
             e.printStackTrace();
         }
     }