public void setViewPager(ViewPager view) {
if (mViewPager == view) return;
if (mViewPager != null) {
mViewPager.setOnPageChangeListener(null);
PagerAdapter adapter = view.getAdapter();
if (adapter != null) adapter.unregisterDataSetObserver(mObserver);
}
PagerAdapter adapter = view.getAdapter();
if (adapter == null)
throw new IllegalStateException("ViewPager does not have adapter instance.");
adapter.registerDataSetObserver(mObserver);
mViewPager = view;
view.setOnPageChangeListener(this);
notifyDataSetChanged();
}
@Override
public void onChanged() {
notifyDataSetChanged();
}
