How to sort Strings on an Android RecyclerView?

Question

I have a recyclerView full of CardViews that have 2 paramteres (Both of them are Strings), one of those is a title,I would like to have a button to sort them alphabetically base

Answer 1

The easiest way to sort a list is to use java.util.Collections

Collections.sort(categories, new Comparator() {
            @Override
            public int compare(Categories lhs, Categories rhs) {
                return lhs.title.compareTo(rhs.title);
            }
        });

This will compare the title character by character. and will sort your list from a to z.

Don't forget after the modification to notify the list that the data have changed with notifyDataSetChanged() (from your RecyclerView.Adapter).