private void setupViewPager(ViewPager viewPager) { ViewPageAdapter adapter = new ViewPageAdapter(getSupportFragmentManager()); adapter.addFrag(new MaterialDesignFrag(getResources().getColor(R.color.colorAccent)), "CAT"); adapter.addFrag(new GridViewFrag(), "DOG"); adapter.addFrag(new RecyclerViewFrag(), "People"); viewPager.setAdapter(adapter); }