存储一组字符串的最佳方法是什么

Question

So I have a set of strings:

public Set<String> favs = new HashSet<>();

Which I add to in the activity later. However I want to be able to read and write these strings from other activities using just one source for all the data I've added a little graphic to try and explain what I mean better. What would be the best way to store my individual strings in this manner?

I would want the data to persist on closing the app. At a guess there would be a maximum of about 30 items. The data would come internally from entered data.

Answer 1

consider using shared preference.

  public void setValue(Set<String> stringSet) {
        getSharedPreferences(getClass().getSimpleName(), Context.MODE_PRIVATE).edit().putStringSet("key",stringSet).comit();
    }