Codi GSON Object Serialization

// CONVERTEIX EL OBJECT a JSON format

Gson gson = new Gson();
String load_data = gson.toJson(OBJECT );
SharedPreferences settings = getSharedPreferences("GameAppSavedData", MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();

// GUARDAR OBJECTE

String saved_data = gson.toJson(OBJECT );
// SAVE DATA TO SHAREDPREFERENCES
editor.putString("Full_Saved_Data", saved_data);
editor.putBoolean("isFirstRun_Flag",false);
editor.commit();

// RECUPERAR OBJECTE

load_data = settings.getString("Full_Saved_Data", "");
OBJECT  = gson.fromJson(load_data, OBJECT .class);