BottomNavigation

For connecting BottomNavigationView with ViewPager, you need to follow thesesteps

• First, you need to create an application with latest Design Support Library(25) to your build.gradle to use BottomNavigationView.

• Then add all the necessary resources ( color, drawable’s ) to the resource directory.

• Create a view with ViewPager and BottomNavigationView

• Create necessary fragments for each tab on the viewpager.

• Then setup the viewpager using fragments and viewpager adapter.

• Add OnNavigationItemSelectedListener for BottomNavigationView, and override OnNavigationItemSelected method with the relevant action.

• Once done with the previous step add OnPageChangeListener to the ViewPager and override the PageSelected method. The magic happens here, the following code selects the relevant item in the BottomNavigationView.

@Override
    public void onPageSelected(int position) {
        if (prevMenuItem != null) {
            prevMenuItem.setChecked(false);
        }
        else
        {
            bottomNavigationView.getMenu().getItem(0).setChecked(false);
        }
       
        bottomNavigationView.getMenu().getItem(position).setChecked(true);
        prevMenuItem = bottomNavigationView.getMenu().getItem(position);
    }
 

For more information, check out my detailed guide here : http://droidmentor.com/bottomnavigationview-with-viewpager-android