title: How to solve the problem of E/RecyclerView: No adapter attached; skipping layout for this coding?
body: <p>Here is my Password Manager activity</p>
  <p>package com.example.passwordmanager;</p>
  <p>Here is the library that I has imported</p>
  <pre><code>import androidx.appcompat.app.AppCompatActivity;
  import androidx.appcompat.widget.Toolbar;
  import androidx.recyclerview.widget.LinearLayoutManager;
  import androidx.recyclerview.widget.RecyclerView;
  import android.os.Bundle;
  import android.widget.Adapter;
  </code></pre>
  <p>Define the variable</p>
  <pre><code>public class PasswordManager extends AppCompatActivity {
      Toolbar toolbar;
      RecyclerView recyclerView;
      Adapter adapter;
  </code></pre>
  <p>Start to set view
  @Override
  protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_password_manager);
  toolbar = findViewById(R.id.toolbar);</p>
  <pre><code>        recyclerView = findViewById(R.id.listOfPass);
          LinearLayoutManager manager = new LinearLayoutManager(this);
          recyclerView.setLayoutManager(manager);
          recyclerView.setHasFixedSize(true);
      }
  }
  </code></pre>
  <p>The error is occur:</p>
  <pre><code>2022-03-18 12:11:31.937 8858-8858/com.example.passwordmanager E/RecyclerView: No adapter attached; skipping layout
  </code></pre>