integer values of array become a float values

[GoogleCodeExporter]

public class Filter extends Object implements Serializable{

    private static final long serialVersionUID = 4944267946319467028L;  
    SparseArray<List<Integer>> catalogue = new SparseArray<List<String>>();

        ....
}

I'm filling catalogue variable with next values : {0=>{1,2,3,4}, 3=>{20,21,22} 
...}

Then I'm saving Filter object like this:
   ...
   ArrayList<Filter> filterList;
   .....

   public void saveFilter(Filter filterModel){      

      filterList.add(filterModel);

      Gson gson = new Gson();
      String jsonStr = gson.toJson(filterList);

      // For example save as
      preference = activity.getSharedPreferences("SJ_MAIN_STORAGE", Context.MODE_PRIVATE);
      Editor editor = preference.edit();
      editor.putString(key, jsonStr);       
      editor.commit();
   }    

I'm getting Filter object this way :
   public ArrayList<Filter> getFilter{
      Gson gson = new Gson();
      ArrayList<Filter> arrayList = new ArrayList<Filter>();    
      String json = preference.getString(key, "");
      if (hStrings.isEmpty(json)) return arrayList;

      JsonParser parser = new JsonParser();
      JsonArray array = parser.parse(json).getAsJsonArray();

      try{
    for(int i = 0; i < array.size(); i++)
    {
        arrayList.add(gson.fromJson(array.get(i), Filter.class));
    }
      }catch(Exception e){

      }
      return arrayList ;
   }

I have the next result of catalogue value: {0=>{1.0,2.0,3.0,4.0}, 
3=>{20.0,21.0,22.0} ...}

(integer values of array become a float values).
Is it right behavior?

Thank you.

Original issue reported on code.google.com by troshkov...@gmail.com on 12 Feb 2014 at 3:00

[jeffreyzh]

I have the same problem，does anyone fixed it ？

[BK-Choi]

// GSON 2.7
((new Gson()).fromJson("{\"test\":630}", Object.class))
// returns 630.0

maybe this is the same problem
why does gson treat an int type json value as if it is an int-frac type?

[eamonnmcmanus]

Addressed by #1290.