这里有一个收集我的片段的导航。我想在这些片段之间切换，但是通过单击菜单项

NavDirections action = AddArtFragmentDirections.actionAddArtFragmentToViewArtFragment();
Navigation.findNavController(view).navigate(action);

我知道它是用做的，但我不能用onoptionsitemselected
这是所有的密码

public class MainActivity extends AppCompatActivity {
    private FirebaseAuth auth;
    private FirebaseUser currentUser;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        auth = FirebaseAuth.getInstance();
        currentUser = auth.getCurrentUser();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater menuInflater = new MenuInflater(this);
        menuInflater.inflate(R.menu.menu, menu);
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {

        if (item.getItemId() == R.id.addArt) {
            NavDirections action = AddArtFragmentDirections.actionAddArtFragmentToViewArtFragment();
            Navigation.findNavController(this, R.id.addArtFragment).navigate(action);
        } else if (item.getItemId() == R.id.seeUsers) {
            //open userFragment
        } else if (item.getItemId() == R.id.signOut) {
            auth.signOut();
            Intent loginActivity = new Intent(this, LoginAndRegisterActivity.class);
            startActivity(loginActivity);
            finish();
        }
        return super.onOptionsItemSelected(item);
    }
}

和graph.xml

<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main_graph"
    app:startDestination="@id/viewArtFragment">

    <fragment
        android:id="@+id/addArtFragment"
        android:name="com.onurerkantoros.artbookfragment.MainFragments.AddArtFragment"
        android:label="fragment_add_art"
        tools:layout="@layout/fragment_add_art" >
        <action
            android:id="@+id/action_addArtFragment_to_viewArtFragment"
            app:destination="@id/viewArtFragment" />
    </fragment>
    <fragment
        android:id="@+id/viewArtFragment"
        android:name="com.onurerkantoros.artbookfragment.MainFragments.ViewAllArtFragment"
        android:label="fragment_view_art"
        tools:layout="@layout/fragment_view_art" >
        <action
            android:id="@+id/action_viewArtFragment_to_addArtFragment2"
            app:destination="@id/addArtFragment" />
        <action
            android:id="@+id/action_viewArtFragment_to_usersFragment"
            app:destination="@id/usersFragment" />
        <action
            android:id="@+id/action_viewArtFragment_to_artFragment"
            app:destination="@id/artFragment" />
    </fragment>
    <fragment
        android:id="@+id/usersFragment"
        android:name="com.onurerkantoros.artbookfragment.MainFragments.UsersFragment"
        android:label="fragment_users"
        tools:layout="@layout/fragment_users" >
        <action
            android:id="@+id/action_usersFragment_to_viewArtFragment"
            app:destination="@id/viewArtFragment" />
    </fragment>
    <fragment
        android:id="@+id/artFragment"
        android:name="com.onurerkantoros.artbookfragment.MainFragments.ArtFragment"
        android:label="fragment_art"
        tools:layout="@layout/fragment_art" >
        <action
            android:id="@+id/action_artFragment_to_viewArtFragment"
            app:destination="@id/viewArtFragment" />
    </fragment>
</navigation>

如果我这样做 Navigation.findNavController(this, R.id.addArtFragment).navigate(action); 我得到一个错误java.lang.illegalargumentexception:id没有引用这个活动中的视图
菜单图像
我的导航图