两个arraylist到一个recyclerview

Question

I have 2 Arraylists. One fetches SQLite data and one fetches Firebase Data

What i want to do is display the sqlite Data first and then below that the Firebase data... My SQLite data is mostly old data and firebase data is new. So i want the new data to be showed first and then if i swipe up the old one. Can i add 2 lists to same recyclerviews as both fetches different types of data

SQLite

               while (csr.moveToNext()) {
                    String mA= csr.getString(csr.getColumnIndex(A));
                    String mB = csr.getString(csr.getColumnIndex(B));
                    String mC= csr.getString(csr.getColumnIndex(C));
                    String mD= csr.getString(csr.getColumnIndex(D));
                    String mE= csr.getString(csr.getColumnIndex(E));
                    String mF= csr.getString(csr.getColumnIndex(F));

                    list.add(new SQLiteHelper(mA, mV, mC, mD, mE, mF));

                }

Firebase

    Helper help= dataSnapshot.getValue(Helper.class);
    List.add(help);

Arraylist 1 = list (Old data)

Arraylist 2 = List (New Data)

Can someone help me out please

Answer 1

You can just Create an Arraylist for the Adapter and then add the data you want to display first first and add the data you want to display below after that.

List<Helper> sqlite = ...
List<Helper> firebase = ...

List<Helper> helpers = new ArrayList<>();
helpers.addAll(sqlite);
helpers.addAll(firebase);

//TODO pass list to the adapter