TabLayout scrolls to unkown position after calling notifyDataSetChanged on PagerAdapter

Question

I have sample project with TabLayout and PagerAdapter. Strange things happens with TabLayout when I call pagerAdapter.notifyDataSetChanged();

Answer 1

I fix the issue, you need modify the TabLayout source code

void populateFromPagerAdapter() {
    removeAllTabs();

    if (mPagerAdapter != null) {
        final int adapterCount = mPagerAdapter.getCount();
        for (int i = 0; i < adapterCount; i++) {
            addTab(newTab().setText(mPagerAdapter.getPageTitle(i)), false);
        }

        // need call post to run the code, to fix children views not layout
        post(new Runnable() {
            @Override
            public void run() {
                // Make sure we reflect the currently set ViewPager item
                if (mViewPager != null && adapterCount > 0) {
                    final int curItem = mViewPager.getCurrentItem();
                    if (curItem != getSelectedTabPosition() && curItem < getTabCount()) {
                        selectTab(getTabAt(curItem));
                    }
                }
            }
        });
    }
}