Question

I am trying to update a password generator I made to include the ability to save passwords, so I’m using SharedPreferences. I want to put the saved passwords inside a Set, but when I try to save the set using SharedPreferences.Editor’s putStringSet method, Eclipse does not recognize it. When I hover over putStringSet in my code, the 2 quick fixes available are “Change to putString(…)” and “add cast to editor”, but I don’t think either of those helps.

This is what I have:

public void save(View v)
{
    SharedPreferences prefs = getPreferences(MODE_PRIVATE);
    final SharedPreferences.Editor editor = prefs.edit();
    savedPasswords = (Set<String>) getSharedPreferences("savedPasswordsList", 0);
    AlertDialog.Builder dialog = new AlertDialog.Builder(this);
    dialog.setItems(passwords, new DialogInterface.OnClickListener(){
        public void onClick(DialogInterface face, int num)
        {
            savedPasswords.add(passwords[num]);
            editor.putStringSet("savedPasswordsList", savedPasswords);
            editor.commit();
            refreshSavedPasswordsList();
        }
    });
    dialog.show();
}

Answer 1

putStringSet(...) was added at API 11 (Android v3.0.x onwards). My guess is you’re targeting a version below that.