Need to call onResume for each fragment inside ViewPager

Question

I have to solve this problem in rapid way because in two hours I have to send my project to my professor.

I have a fragmentviewpager with 5 fragment inside a fragment. Inside every fragment I have a table and it update with some data from json file and in base of the page position.

I take the page position with this function inside fragment container and I put it in the static int currentPage:

mPager.setOnPageChangeListener(new OnPageChangeListener() {

    @Override
    public void onPageSelected(int arg0) 
    {
        currentPage=arg0;
    }

    @Override
    public void onPageScrolled(int arg0, float arg1, int arg2) 
    {


    }

    @Override
    public void onPageScrollStateChanged(int arg0) 
    {


    }
});

Inside to onResume of each fragment inside fragmentviewpager I take the current position with the currentPage variable.

But for do a correct work, I need that I can execute onResume every time when I change page with a swipe. In what way can I do ?

This is my fragmentviewpager:

private class ScreenSlidePagerAdapter extends FragmentPagerAdapter 
    {

        // fragments to instantiate in the viewpager
        private List<Fragment> fragments;

        public ScreenSlidePagerAdapter(FragmentManager fm, List<Fragment> fragments) 
        {
            super(fm);
            this.fragments = fragments;
        }

        public void addPage(Fragment page)
        {
            fragments.add(page);
            this.notifyDataSetChanged();
        }

        @Override
        public Fragment getItem(int position) 
        {

            return this.fragments.get(position);
        }

        @Override
        public int getItemPosition(Object object) {
               return POSITION_NONE;
            }

        @Override
        public int getCount() 
        {
            return fragments.size();
        }
    }

How can I solve my problem ? Thank you in Advance :)

Use `getChildFragmentManager()` See http://stackoverflow.com/a/35919170/1257369 http://stackoverflow.com/a/25525714/1257369 — everyman, Mar 10 '16 at 14:30

score 0 · Answer 1 · edited May 23 '17 at 11:59

0

onResume does not get called all time in viewpager, you can create a public method in fragment and you can call that depending on position This link will be use full to you Getting the current Fragment instance in the viewpager

edited May 23 '17 at 11:59

Community

1
1

answered Aug 20 '15 at 04:02

Narendra Kothamire

973
5
11

do you mean to put that function inside every fragment and call in the onpageselected callback ? – aeroxr1 Aug 20 '15 at 04:05
I have added the fragment in this way : fragments.add(Fragment.instantiate(getActivity(),CmdPageSlider.class.getName())); fragments.add(Fragment.instantiate(getActivity(),CmdPageSlider.class.getName())); fragments.add(Fragment.instantiate(getActivity(),CmdPageSlider.class.getName())); fragments.add(Fragment.instantiate(getActivity(),CmdPageSlider.class.getName())); fragments.add(Fragment.instantiate(getActivity(),CmdPageSlider.class.getName())); In what way can I call the right interface ? – aeroxr1 Aug 20 '15 at 04:12
I need to reference to the current fragment to call the interface, but in what way ? – aeroxr1 Aug 20 '15 at 04:16
Why are you using fragments List – Narendra Kothamire Aug 20 '15 at 04:18
what do you suggest to use ? – aeroxr1 Aug 27 '15 at 03:26

Need to call onResume for each fragment inside ViewPager

1 Answers1