package cn.nahco3awa.naouc; import static android.widget.Toast.LENGTH_SHORT; import android.os.Bundle; import android.widget.Toast; import androidx.appcompat.app.AppCompatActivity; import androidx.navigation.NavController; import androidx.navigation.Navigation; import androidx.navigation.ui.AppBarConfiguration; import androidx.navigation.ui.NavigationUI; import com.google.android.material.bottomnavigation.BottomNavigationView; import cn.nahco3awa.naouc.databinding.ActivityMainBinding; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); MyCrashHandler crashHandler = MyCrashHandler.newInstance(); crashHandler.init(this); Thread.setDefaultUncaughtExceptionHandler(crashHandler); ActivityMainBinding binding = ActivityMainBinding.inflate(getLayoutInflater()); setContentView(binding.getRoot()); BottomNavigationView navView = findViewById(R.id.nav_view); AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder( R.id.navigation_ouc, R.id.navigation_weouc) .build(); NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_activity_main); NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration); NavigationUI.setupWithNavController(binding.navView, navController); } private void sorryNo() { Toast.makeText(this, "× 抱歉,不行。", LENGTH_SHORT).show(); finish(); } }