fragmentpageradapter

I believe that FragmentStatePagerAdapter does not behave correctly when overriding getItemPosition(Object object) with the purpose of reordering the pages. Below is a simple example. In the initial state, the order of the pages is {A, B, C}. Upon calling toggleState() , the order of the pages changes to {A, C, B}. By overriding getItemPosition(Object object) , we ensure that the current page being viewed (A, B, or C) does not change. public static class TestPagerAdapter extends FragmentStatePagerAdapter { private boolean mState = true; public TestPagerAdapter(FragmentManager fragmentManager) {

I'm using the ViewPager example with ActionBar tabs taken from the Android documentation here . Unfortunately, as soon as I call the addTab method, the application crashes with the following exception: IllegalStateException: The application's PagerAdapter changed the adapter's content without calling PagerAdapter#notifyDataSetChanged! Expected adapter item count 0, found 1. This is the FragmentPagerAdapter code: public static class TabsAdapter extends FragmentPagerAdapter implements ActionBar.TabListener, ViewPager.OnPageChangeListener { private final Context mContext; private final ActionBar