在底部导航视图上重新创建了活动

Question

以下是我选择的底部导航视图项的代码

public static void  setupBottomNavigationView(BottomNavigationViewEx bottomNavigationViewEx){
        Log.d(TAG, "setupBottomNavigationView: Setting up NavigationView1");
        bottomNavigationViewEx.enableAnimation(false);
        bottomNavigationViewEx.enableItemShiftingMode(false);
        bottomNavigationViewEx.enableShiftingMode(false);
        bottomNavigationViewEx.setTextVisibility(false);
    }

      public static void enableNavigation(final Context context, BottomNavigationViewEx view){
    view.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
        @Override
        public boolean onNavigationItemSelected(@NonNull MenuItem item) {
            Fragment fragment;
            switch (item.getItemId()){
                case R.id.nav_home:
                    fragment = new FragmentMarker();
                    loadFragment(fragment);
                    return true;
                case R.id.nav_bookmark:
                    fragment = new FragmentBookmark();
                    loadFragment(fragment);
                    return true;
                case R.id.nav_blog:
                    fragment = new FragmentBlog();
                    loadFragment(fragment);
                    return true;
                case R.id.nav_notification:
                    fragment = new FragmentNotification();
                    loadFragment(fragment);
                    return true;
                case R.id.nav_account:
                    fragment = new FragmentAccount();
                    loadFragment(fragment);
                    return true;

            }
           return false;
        }
    });
 }

是否可以在不重新创建活动的情况下在底部导航栏上显示片段？

Answer 1

       @Override
        public boolean onNavigationItemSelected(@NonNull MenuItem item) {
            Fragment fragment;
            switch (item.getItemId()) {
                case R.id.nav_home:
                    fragment = new HomeFragment();
                    loadFragment(fragment);
                    return true;
                case R.id.nav_bookmark:
                    fragment = new BookmarkFragment();
                    loadFragment(fragment);
                    return true;
                case R.id.nav_blog:
                    fragment = new BlogFragment();
                    loadFragment(fragment);
                    return true;

            }

            return false;
        }
    };

    private void loadFragment(Fragment fragment) {
        // load fragment
        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
        transaction.replace(R.id.frame_container, fragment);
        transaction.addToBackStack(null);
        transaction.commit();
    }