Gibs:

I have a sorted Arraylist of contacts. I want to Store the list in shared preference. I have tried the below code :

store

  SharedPreferences.Editor editor = app_preference.edit();
  Set set = new HashSet();
  set.addAll(contact_names_list);
  editor.putStringSet("CONTACT_LIST", set);
  editor.apply();

The problem is, when I retrieve this from Hashset I got an unsorted list. Is there any other way to store arraylist other than Hashset?