@Override
protected void onDetachedFromWindow() {
updateAdapter(mPager.getAdapter(), null);
mPager.setInternalPageChangeListener(null);
mPager.setOnAdapterChangeListener(null);
mPager = null;
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
final ViewParent parent = getParent();
if (!(parent instanceof ViewPager)) {
throw new IllegalStateException("PagerTitleStrip must be a direct child of a ViewPager.");
}
final ViewPager pager = (ViewPager) parent;
final PagerAdapter adapter = pager.getAdapter();
pager.setInternalPageChangeListener(mPageListener);
pager.setOnAdapterChangeListener(mPageListener);
mPager = pager;
updateAdapter(null, adapter);
}