Getting the current Fragment instance in the viewpager

Question

Below is my code which has 3 Fragment classes each embedded with each of the 3 tabs on ViewPager. I have a menu option. As shown in the onOpt

Answer 1

This is more future-proof than the accepted answer:

public class MyFragmentPagerAdapter extends FragmentPagerAdapter {

    /* ------------------------------------------------------------------------------------------ */
    // region Private attributes :

    private Context _context;
    private FragmentManager _fragmentManager;
    private Map _fragmentsTags = new HashMap<>();

    // endregion
    /* ------------------------------------------------------------------------------------------ */



    /* ------------------------------------------------------------------------------------------ */
    // region Constructor :

    public MyFragmentPagerAdapter(Context context, FragmentManager fragmentManager) {

        super(fragmentManager);

        _context = context;
        _fragmentManager = fragmentManager;
    }

    // endregion
    /* ------------------------------------------------------------------------------------------ */



    /* ------------------------------------------------------------------------------------------ */
    // region FragmentPagerAdapter methods :

    @Override
    public int getCount() { return 2; }

    @Override
    public Fragment getItem(int position) {

        if(_fragmentsTags.containsKey(position)) {

            return _fragmentManager.findFragmentByTag(_fragmentsTags.get(position));
        }
        else {

            switch (position) {

                case 0 : { return Fragment.instantiate(_context, Tab1Fragment.class.getName()); }
                case 1 : { return Fragment.instantiate(_context, Tab2Fragment.class.getName()); }
            }
        }

        return null;
    }

    @Override
    public Object instantiateItem(ViewGroup container, int position) {

        // Instantiate the fragment and get its tag :
        Fragment result = (Fragment) super.instantiateItem(container, position);
        _fragmentsTags.put(position, result.getTag());

        return result;
    }

    // endregion
    /* ------------------------------------------------------------------------------------------ */
}