IllegalStateException: The application's PagerAdapter changed the adapter's content without calling PagerAdapter#notifyDataSetChanged

Question

I\'m using the ViewPager example with ActionBar tabs taken from the Android documentation here.

Unfortunately, as soon as I call the

Answer 1

I fixed it by callinig notifyDataSetChanged() once and just before next call of getCount():

private boolean doNotifyDataSetChangedOnce = false;

@Override
public int getCount() {

  if (doNotifyDataSetChangedOnce) {
    doNotifyDataSetChangedOnce = false;
    notifyDataSetChanged();
  }

  return actionBar.getTabCount();

}

private void addTab(String text) {

  doNotifyDataSetChangedOnce = true;

  Tab tab = actionBar.newTab();
  tab.setText(text);
  tab.setTabListener(this);
  actionBar.addTab(tab);

}

private void removeTab(int position) {

  doNotifyDataSetChangedOnce = true;

  actionBar.removeTabAt(position);

}