refresh a fragment from its parent activity

Question

I have almost the exact same problem as this question here: Android, How to restart/refresh a fragment from FragmentActivty?

I\'m trying to call the a method of a

Answer 1

You have to do this :

frag.getFragmentManager().beginTransaction().detach(frag).commit();
frag.getFragmentManager().beginTransaction().attach(frag).commit();

Answer 2

Your fragments are managed by the adapter. Therefore, you also have to call for the adapter to refresh your fragments. These steps are necessary:

1. Override getItemPosition in your Adapter

   @Override
   public int getItemPosition(Object object) {
       // POSITION_NONE makes it possible to reload the PagerAdapter
       return POSITION_NONE;
   }
   

2. Once you did that call

   mViewPager.getAdapter.notifyDataSetChanged();
   

   in your Activity. From the fragment object itself you could use a callback to inform the Activity of the need to refresh.

This will freshly populate the viewPager with new instances of your fragments which is like restarting / refreshing the fragment.

Hope it helps and this was what you were looking for.

Answer 3

You can find your fragment by the Tag, but of course you need to give this tag to it while adding the fragment.

First add your fragment with a tag:

        fragmentManager = getFragmentManager();
        fragmentTransaction = fragmentManager.beginTransaction();
        SomeFragment fragment = new ManageLinksFragment();
        fragmentTransaction.add(R.id.fragment_container1,fragment, "sometag");
        fragmentTransaction.commit();

And then on the Activity's site:

SomeFragment mSomeFragment = (SomeFragment) getFragmentManager().findFragmentByTag("sometag");
// now mSomeFragment.callsomething();

Answer 4

getFragmentManager().beginTransaction().detach(this).attach(this).commit();