Sorting a Recyclerview

Question

Hi guys How would i be able to sort a recyclerview by the data that is within a certain textview which is inside each item inside the recyclerview. I also would love to know

Answer 1

First of all Sort the data using Comparator before setting adapter. using Collections. import java.util.Collections like

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

In above I sort a lable in AnyClass alphabetically. And In order to add a header you have to convert the label into charArray and compare it with last item in array. if it is not that then add a header.

Some Helpful links

https://eshyu.wordpress.com/2010/08/15/cursoradapter-with-alphabet-indexed-section-headers/

https://github.com/amalChandran/ListviewAlphabetIndexer

Display Namelist In Recyclerview under each letter in alphabetic Order Android