Set selected item in Android BottomNavigationView

Question

I am using the new android.support.design.widget.BottomNavigationView from the support library. How can I set the current selection from code? I realized, that

Answer 1

I hope this helps

//Setting default selected menu item and fragment
        bottomNavigationView.setSelectedItemId(R.id.action_home);
        getSupportFragmentManager()
                .beginTransaction()
                .replace(R.id.fragment_container, new HomeFragment()).commit();

It is more of determining the default fragment loaded at the same time with the corresponding bottom navigation menu item. You can include the same in your OnResume callbacks

Answer 2

Use this to set selected bottom navigation menu item by menu id

MenuItem item = mBottomNavView.getMenu().findItem(menu_id);
item.setChecked(true);

Answer 3

To programmatically click on the BottomNavigationBar item you need use:

View view = bottomNavigationView.findViewById(R.id.menu_action_item);
view.performClick();

This arranges all the items with their labels correctly.

Answer 4

@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);

   bottomNavigationView.setOnNavigationItemSelectedListener(this);
   Menu menu = bottomNavigationView.getMenu();
   this.onNavigationItemSelected(menu.findItem(R.id.action_favorites));
}

Answer 5

You can try the performClick method :

View view = bottomNavigationView.findViewById(R.id.YOUR_ACTION);
view.performClick();

Edit

From API 25.3.0 it was introduced the method setSelectedItemId(int id) which lets you mark an item as selected as if it was tapped.

Answer 6

This method work for me.

private fun selectBottomNavigationViewMenuItem(bottomNavigationView : BottomNavigationView,@IdRes menuItemId: Int) {
            bottomNavigationView.setOnNavigationItemSelectedListener(null)
            bottomNavigationView.selectedItemId = menuItemId
            bottomNavigationView.setOnNavigationItemSelectedListener(this)
        }

Example

 override fun onBackPressed() {
        replaceFragment(HomeFragment())
        selectBottomNavigationViewMenuItem(navView, R.id.navigation_home)
    }



private fun replaceFragment(fragment: Fragment) {
        val transaction: FragmentTransaction = supportFragmentManager.beginTransaction()
        transaction.replace(R.id.frame_container, fragment)
        transaction.commit()
    }