Set Initially Selected Item Index/id In Bottomnavigationview

I have implemented BottomNavigationView and have no idea how to set selection index or MenuItem id (in my case, middle item should be selected by default). I'm afraid there's no s

Solution 1:

Set the selected menu item ID using setSelectedItemId:

bottomNavigationView.setSelectedItemId(R.id.item_id);

This method started being available from Android Support Library 25.3.0.

Solution 2:

The only solution that worked for me is:

Viewview= bottomNavigationView.findViewById(R.id.menu_action_dashboard);
view.performClick();

Simply performing click does the trick. Hope we'll get extra methods/properties in future releases.

UPD:

As user5968678mentioned, a new method was added since Android Support Library v25.3.0:

bottomNavigationView.setSelectedItemId(R.id.item_id);

so use this instead :)

Solution 3:

I think this solution my be slightly more elegant than accepted answer:

bottomNavigationView.getMenu().getItem(menuItemIndex).setChecked(true)

where menuItemIndex is index of the selected element.

Solution 4:

Here's what the documentation says about it:

Menu items can also be used for programmatically selecting which destination is currently active. It can be done using MenuItem#setChecked(true)

As an alternative to what Jan posted, you can also find the item by id:

Menumenu= findViewById(R.id.navigation).getMenu();
menu.findItem(R.id.navigation_home).setChecked(true);

Also, in general, I can recommend calling .callOnClick() instead of .performClick().

Solution 5:

If you're using listener, like default implementation in android studio, try this:

BottomNavigationViewnavigation= (BottomNavigationView) findViewById(R.id.navigation);
IntegerindexItem=4;
navigation.getMenu().getItem(indexItem).setChecked(true);
mOnNavigationItemSelectedListener.onNavigationItemSelected(navigation.getMenu().getItem(indexItem));