Android studio Bottom navigation bar: How do I set the middle button to be clicked first?

Question

Currently, when I open the app, the left most button is initially clicked. How do I change it so that the middle button is initially clicked when the app is run.

-Thanks

Answer 1

Tow way to define default fragment :

1st : Set the selected index setSelectedItemId

bottomNavigation.setSelectedItemId(R.id.item_id);

---

2nd : Also you can create PushFragment method like below :

public void PushFragment(Fragment fragment){

        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.nav_Frame, fragment).addToBackStack( "HomeFragment" ).commit();
    }

And in onCreate() method declare PushFragment() with your default fragment id see below code :

PushFragment(new HomeFragment());

Answer 2

How you are loading bottom navigation bar items dynamically or static???

static means use like this:

bottomNavigationView.setSelectedItemId(R.id.your_middle_item_id);