Search Firestore query don't show data in RecycleView

Question

this is my data in Firestore I want to show this name "mouad"

This is my code

ublic class SearchActivity extends AppCompatActivity {

    private RecyclerView mMainList;
    private FirebaseFirestore mFirestore;
    private List usersList;
    private CustomAdapter adapterRe;
    EditText editText;
    Button btnSearch;
    String  name;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_search_firebase);

        mFirestore = FirebaseFirestore.getInstance();


        editText = (EditText) findViewById(R.id.search);
        btnSearch = (Button) findViewById(R.id.btn);

        usersList = new ArrayList();
        adapterRe = new CustomAdapter(getApplicationContext(), usersList);

        mMainList = (RecyclerView) findViewById(R.id.recyvle);
      //  mMainList.setHasFixedSize(true);
     //   mMainList.setLayoutManager(new LinearLayoutManager(this));
     //   mMainList.setAdapter(adapterRe);


        btnSearch.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                SearchUserFirebase();
            }
        });



    }

    private void SearchUserFirebase() {
        name = editText.getText().toString();
        if(!name.isEmpty()){

            Query query =  mFirestore.collection("Movies").orderBy("name" ).startAt(name).endAt(name + "\uf8ff");
            query.addSnapshotListener(new EventListener() {
               @Override
               public void onEvent(QuerySnapshot documentSnapshots, FirebaseFirestoreException e) {

                   if (e != null){

                       Log.d("TAG", "Error : " + e.getMessage());
                   }
                   ArrayList adsList = new ArrayList();

                   for(DocumentChange doc : documentSnapshots.getDocumentChanges()){

                       if (doc.getType() == DocumentChange.Type.ADDED){

                           Movies users = doc.getDocument().toObject(Movies.class);
                           usersList.add(users);
                           adapterRe.notifyDataSetChanged();

                       }
                   }

                   Log.d("TAG", "no of records of the search is " + adsList.size());

               }
           });

        }
    }
    }

This is error

error

Answer 1

Typically this error appears when you are trying to set the adapter from a background thread and not from the "main" thread (for example inside the onCreate() method).

If you are trying to set the adapter from a "delayed" method like inside the onEvent() method, this warning will always appear.

To solve this, move the creation of the adapter in the same thread and get the following line of code out of that for loop.

adapterRe.notifyDataSetChanged();

Answer 2

Do you have an empty constructor inside the "Movies.java" file?

 public Movies() {
      //Necessary to retrieve data
 }