Todo list using recycler activity

#1

I am trying to make a simple Todo list app using edit text and add button. the text that I type is not added into the list by clicking the add button. is there a problem with the way i am using function notifyDataSetCahnged(). please tell the right way to implement it.

code for main Activity

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package com.example.todolist3;

import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

import java.util.ArrayList;

public class RecyclerActivity extends AppCompatActivity {
private Button btnAdd;
private EditText etAdd;
private RecyclerView rvText;
ArrayList list;
ToDoListRecyclerAdapter adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_recycler);
    btnAdd = findViewById(R.id.btnAdd);
    etAdd = findViewById(R.id.etAdd);
    rvText = findViewById(R.id.rvText);
    rvText.setLayoutManager(new LinearLayoutManager(this));
    list=new ArrayList<>();
    list.add("Your text is entered here");
    adapter = new ToDoListRecyclerAdapter(list);
    rvText.setAdapter(adapter);


    btnAdd.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String text = etAdd.getText().toString();
            addText(text);
        }
    });
}
private void addText(String text){
  list.add(text);
  adapter.notifyDataSetChanged();

}

}
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code for adapter
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package com.example.todolist3;

import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import java.util.ArrayList;

public class ToDoListRecyclerAdapter extends RecyclerView.Adapter<ToDoListRecyclerAdapter.ToDoListViewHolder> {
ArrayList list;
public ToDoListRecyclerAdapter(ArrayList list){
this.list=list;
}
@NonNull
@Override
public ToDoListViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
LayoutInflater li=(LayoutInflater)parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View itemView=li.inflate(R.layout.todo_list_card,parent,false);
return new ToDoListViewHolder(itemView) ;
}

    @Override
    public void onBindViewHolder(@NonNull ToDoListViewHolder holder, int position) {
        String TodoList=list.get(position);
        holder.tvText.setText(TodoList);
    }

    @Override
    public int getItemCount() {
        return list.size();
    }

    class ToDoListViewHolder extends RecyclerView.ViewHolder{
        TextView tvText;


        public ToDoListViewHolder(@NonNull View itemView) {
            super(itemView);
            tvText=itemView.findViewById(R.id.tvText);
        }
    }

}
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