隐藏带有片段的ViewPager

Question

i'm having a problem with ViewPager with Fragments. in my app i have one fragment that inside it their's a ViewPager that each Fragment inside it have a ListView. each item on the ListView open another fragment that display more details about that item. so far so good, but when i popBackStack the FragmentManager the current fragment in the ViewPager is not seen.

and if i try to slide between the page i can see the next page and then slide back and see again the hidden page.

PageAdapter code:

private class SchedulePageAdapter extends FragmentStatePagerAdapter{

    JSONArray scheduleJsonArray;
    public SchedulePageAdapter(FragmentManager fm,JSONArray scheduleJsonArray) {
        super(fm);
        this.scheduleJsonArray = scheduleJsonArray;

    }



    @Override
    public ScheduleFragment getItem(int position) {
        ScheduleFragment scheduleFragment = new ScheduleFragment();


        Bundle bundle = new Bundle();
        try {
            bundle.putString("json",scheduleJsonArray.getJSONObject(position).getJSONArray("channel_schedule").toString());
            bundle.putString("day",getArguments().getString("day"));
            bundle.putString("channel",channelTextView.getText().toString());
        } catch (JSONException e) {
            e.printStackTrace();
        }
        scheduleFragment.setArguments(bundle);
        return scheduleFragment;
    }

    public JSONArray getScheduleJsonArray() {
        return scheduleJsonArray;
    }

    @Override
    public int getCount() {
        int count = scheduleJsonArray.length();
        return count;
    }

}

open item in listView:

FragmentManager fragmentManager = getFragmentManager();
    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();


        fragmentTransaction
                .setCustomAnimations(R.anim.slide_in_left, R.anim.slide_out_left, R.anim.slide_in_right, R.anim.slide_out_right)
                .replace(R.id.mainFrameLayout, fullScheduleFragment, FullScheduleFragment.class.getSimpleName())
                .addToBackStack(PhoneMainActivity.MENU_STACK).commit();

Answer 1

try use getChildFragmentManager() when you instanciate your SchedulePageAdapter

PagerAdapter adapter = new SchedulePageAdapter (getChildFragmentManager(), scheduleJsonArray);
        pagerData.setAdapter(adapter);

also use getSupportFragmentManager unstead :

  FragmentManager fragmentManager = getSupportFragmentManager();

if still dosn't work please leave a comment

Good luck