public void notifyDataSetChanged() { mTabLayout.removeAllViews(); PagerAdapter adapter = mViewPager.getAdapter(); IconPagerAdapter iconAdapter = null; if (adapter instanceof IconPagerAdapter) { iconAdapter = (IconPagerAdapter) adapter; } final int count = adapter.getCount(); for (int i = 0; i < count; i++) { CharSequence title = adapter.getPageTitle(i); if (title == null) { title = EMPTY_TITLE; } int iconResId = 0; if (iconAdapter != null) { iconResId = iconAdapter.getIconResId(i); } addTab(i, title, iconResId); } if (mSelectedTabIndex > count) { mSelectedTabIndex = count - 1; } setCurrentItem(mSelectedTabIndex); requestLayout(); }