Display fragment viewpager within a fragment

Question

use AsyncTask to set the adapter for viewPager. It works for me. The asyncTask is to make the original fragment complete it's transition. and then we proceed with viewPager fragments, basically to avoid recursion.

 @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    mView = inflater.inflate(R.layout.team_card_master, container, false);
    mViewPager = (ViewPager)mView.findViewById(R.id.team_card_master_view_pager);

    final Button button = (Button)mView.findViewById(R.id.load_viewpager_button);
    button.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            mViewPager.setAdapter(mAdapter);
            button.setVisibility(View.GONE);
        }
    });

    mAdapter = new ViewPagerAdapter(getFragmentManager());
    new setAdapterTask().execute();

    return mView;
}

private class setAdapterTask extends AsyncTask<Void,Void,Void>{
      protected Void doInBackground(Void... params) {
            return null;
        }

        @Override
        protected void onPostExecute(Void result) {
                   mViewPager.setAdapter(mAdapter);
        }
}

You can use FragmentStatePagerAdapter instead of FragmentPageAdapter. It will remove fragments for you.

I just ran into this same problem. I had a Fragment that needed to host a ViewPager of Fragments. When I stacked another Fragment on top of my ViewPagerFragment, and then hit back, I would get an IllegalStateException. After checking the logs (when stacking a new Fragment), I found that my ViewPagerFragment would go through its lifecycle methods to stop and destroy, however its children Fragments in the the ViewPager would stay in onResume. I realized that the children Fragments should be managed by the FragmentManager for the ViewPagerFragment, not the FragmentManager of the Activity.

I understand at the time, the answers above were to get around the limitations of Fragments not being able to have children Fragments. However, now that the latest support library has support for Fragment nesting, you no longer need to hack around setting the adapter for your ViewPager, and passing getChildFragmentManager() is all you need. This has been working perfectly for me so far.

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    mView = inflater.inflate(R.layout.team_card_master, container, false);
    mViewPager = (ViewPager) mView.findViewById(R.id.team_card_master_view_pager);

    mAdapter = new ViewPagerAdapter(getChildFragmentManager());
    mViewPager.setAdapter(mAdapter);

    return mView;
}

I used Handler.post() to set adapter outside of original fragment transaction:

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    mHandler.post(new Runnable() {
        @Override
        public void run() {
            mViewPager.setAdapter(mAdapter);     
        }
    });        
}