content: /*
   * Copyright 2018 Google LLC
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.example.android.basicandroidaccessibility;
  
  import androidx.appcompat.app.AppCompatActivity;
  import android.os.Bundle;
  import androidx.appcompat.widget.Toolbar;
  import androidx.navigation.NavController;
  import androidx.navigation.Navigation;
  import androidx.navigation.ui.AppBarConfiguration;
  import androidx.navigation.ui.NavigationUI;
  
  public class MainActivity extends AppCompatActivity {
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
  
          NavController navController = Navigation.findNavController(this, R.id.my_nav_host_fragment);
          AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(navController.getGraph()).build();
  
          Toolbar toolbar = findViewById(R.id.toolbar);
          setSupportActionBar(toolbar);
          NavigationUI.setupWithNavController(toolbar, navController, appBarConfiguration);
      }
  }
  