MaterialDrawer set selected profile

I use the MaterialDrawer library by Mike Penz.

In my OnCreate, profiles are added to the drawer from a linkedHashMap. When a profile gets selected, the new selected profile is saved in a sharedPreference.

My Question: if I launch the App again, how can I set the profile, whichs name is stored in the sharedPreference, as the selected?

Edit: Without an identifier? Or is this not possible?

1 answer

  • answered 2017-08-16 19:34 mikepenz

    The MaterialDrawer requires an identifier given to it's elements so that you can reselect them (and that the Drawer itself can re-select them upon configuration changes) again.

    Simply provide any id. You can use something like this:

    private static long hashString64Bit(CharSequence str) {
        long result = 0xcbf29ce484222325L;
        final int len = str.length();
        for (int i = 0; i < len; i++) {
            result ^= str.charAt(i);
            result *= 0x100000001b3L;
        }
        return result;
    }
    

    To generate an long identifier for your string, or you generate some kind of hashcode.