我正在使用Android模板导航抽屉活动，但如果我更改标题并添加片段，如果我单击它，它不会将我带到片段[重复]

Question

我使用Android模板打开了一个新的活动，用于导航抽屉活动。当我点击默认的导航抽屉时，它显示了不同的片段。

我已经更改了导航抽屉中选项的标题。但是如果我点击它，它不会把我带到片段。

我在模板的主活动中找不到任何itemSelected或onClick方法，我可以在其中更改代码以显示新片段。请帮助我如何调整代码以获得自己的片段。

'''

public class MainActivity extends AppCompatActivity {

    private AppBarConfiguration mAppBarConfiguration;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        FloatingActionButton fab = findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, "Replace with your own action", 
        Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });
        DrawerLayout drawer = findViewById(R.id.drawer_layout);

        NavigationView navigationView = findViewById(R.id.nav_view);

        // Passing each menu ID as a set of Ids because each
        // menu should be considered as top level destinations.
        mAppBarConfiguration = new AppBarConfiguration.Builder(
                R.id.nav_home, R.id.nav_order, R.id.nav_status)
                .setDrawerLayout(drawer)
                .build();
        NavController navController = Navigation.findNavController(this, 
        R.id.nav_host_fragment);
        NavigationUI.setupActionBarWithNavController(this, navController, 
        mAppBarConfiguration);
        NavigationUI.setupWithNavController(navigationView, navController);


    }



    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is 
       present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onSupportNavigateUp() {
        NavController navController = Navigation.findNavController(this, 
     R.id.nav_host_fragment);
        return NavigationUI.navigateUp(navController, mAppBarConfiguration)
                || super.onSupportNavigateUp();
    }
}

'''

Answer 1

//First set Navigation Item Selected listener 

navigationView.setNavigationItemSelectedListener(this);

//then override the onNavigationItemSelected method like this..
 @Override
    public boolean onNavigationItemSelected(@NonNull MenuItem item) {
        // Handle navigation view item clicks here.
        switch (item.getItemId()) {

            case R.id.home:
               //do something...
                break;
            case R.id.about:
                 //do something...
                break;



        }