Bottom Navigation View : Change the default highlighted Tab when the app launches

问题

As shown above, I have this button navigation view, when ever I launch my application, in default my "Catagories" tab gets highlighted, but I want to get my "Home" tab get highlighted when i launch my application, can anyone help me get out of it?

回答1:

try this use setSelectedItemId() method of your BottomNavigationView like this

BottomNavigationView bottomNavigationView;
bottomNavigationView = (BottomNavigationView) findViewById(R.id.bottomNavigationView);
bottomNavigationView.setSelectedItemId(R.id.home_menu);

or use viewPager.setCurrentItem(); of your view pager like this

viewPager.setCurrentItem(2);

回答2:

   /***Just try to use below code snipet***/

   viewPager.setCurrentItem(2);

   if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
   {
     home_icon.setImageDrawable(getResources().getDrawable(R.drawable.home_icon_selected_state, getApplicationContext().getTheme()));

   }
   else
   {
     home_icon.setImageDrawable(getResources().getDrawable(R.drawable.home_icon_selected_state));
   }

来源：https://stackoverflow.com/questions/46048657/bottom-navigation-view-change-the-default-highlighted-tab-when-the-app-launche