Display Namelist In Recyclerview under each letter in alphabetic Order Android

Question

I have list of contacts which has to be displayed in alphabetic under each alphabet as shown in the image shown

How can I do this in RecyclerView, please suggest a solut

Answer 1

compare your model and get first character from title ....

private void getHeaderListLatter(ArrayList usersList) {

        Collections.sort(usersList, new Comparator() {
            @Override
            public int compare(CountriesModel user1, CountriesModel user2) {
                return String.valueOf(user1.name.charAt(0)).toUpperCase().compareTo(String.valueOf(user2.name.charAt(0)).toUpperCase());
            }
        });

        String lastHeader = "";

        int size = usersList.size();

        for (int i = 0; i < size; i++) {

            CountriesModel user = usersList.get(i);
            String header = String.valueOf(user.name.charAt(0)).toUpperCase();

            if (!TextUtils.equals(lastHeader, header)) {
                lastHeader = header;
                mSectionList.add(new CountriesModel(header,true));
            }

            mSectionList.add(user);
        }
    }

and in your adapter getItemViewType Layout like this ....

@Override
    public int getItemViewType(int position) {
        if (mCountriesModelList.get(position).isSection) {
            return SECTION_VIEW;
        } else {
            return CONTENT_VIEW;
        }
    }

for complete reference . https://github.com/sayanmanna/LetterSectionedRecyclerView