i'm implementing the fragment screen
that contains root view pager
which contains child fragment
and the first of child fragment
has a view pager
which shows images.
it is shown pretty good at first time, but when the fragment
which contains root view pager
is removed and replaced again (with new keyword for fragment screen
), roow view pager
doesn't show child fragment
.
here is the portion of my source.
@AfterViews // this is the method of fragment screen
protected void afterViews() {
api(HotelDetailAPI.class).getProduct("hotels", getArguments().getInt("itemId"), new Callback<Hotel>(this) {
@Override
public void success(Hotel _hotel, Response response) {
hotel = _hotel;
HotelDetailPagerAdapter adapter = new HotelDetailPagerAdapter(getFragmentManager());
contentViewPager.setAdapter(adapter);
contentViewPager.setBackgroundColor(0xffffff);
super.success(hotel, response);
}
@Override
public void failure(RetrofitError error) {
super.failure(error);
LOG.error("failed");
}
});
}
private class HotelDetailPagerAdapter extends FragmentPagerAdapter {
List<Fragment> fragments = new ArrayList<>();
public HotelDetailPagerAdapter(FragmentManager fm) {
super(fm);
Bundle data = new Bundle();
data.putSerializable("hotel", hotel);
Fragment fragment1 = new HotelDetailReservationFragment_();
Fragment fragment2 = new HotelDetailReservationFragment_();
Fragment fragment3 = new HotelDetailReservationFragment_();
fragment1.setArguments(data);
fragment2.setArguments(data);
fragment3.setArguments(data);
fragments.add(fragment1);
fragments.add(fragment2);
fragments.add(fragment3);
}
@Override
public Fragment getItem(int position) {
return fragments.get(position);
}
@Override
public int getCount() {
return 3;
}
}
// this is the first fragment of root view pager it's not shown again.
@EFragment(R.layout.fragment_hotel_detail_reservation)
public class HotelDetailReservationFragment extends BaseFragment {
private Hotel hotel;
@AfterViews
public void afterViews() {
hotel = (Hotel)getArguments().getSerializable("hotel");
FragmentTransaction ft = getBaseActivity().getFragmentManager().beginTransaction();
Fragment fragment = new ImageSliderFragment_();
Bundle data = new Bundle();
data.putStringArray("images", hotel.getImages());
fragment.setArguments(data);
ft.add(R.id.hotel_detail_image_slider_container, fragment);
ft.commit();
}
}
note that fragment screen
is popped from back stack when the user presses back button, and if the user is clicked item again, new instance of fragment screen is replaced
what's wrong with them?