ViewPager and Fragment refresh data, viewpagerfragment

ViewPager and Fragment refresh data, viewpagerfragment

Alas, every time I forget how to write it, remember it honestly!

public class MDTabViewPagerAdapter extends FragmentStatePagerAdapter {    private static final String TAG = MDTabViewPagerAdapter.class.getSimpleName();    private List list;    private FragmentManager fm;    public MDTabViewPagerAdapter(FragmentManager fm, List list) {        super(fm);        this.fm = fm;        this.list = list;    }    @Override    public Fragment getItem(int position) {        Fragment fragment =  (Fragment)list.get(position);        return fragment;    }    @Override    public int getCount() {        return list == null ? 0 : list.size();    }    public void setFragments(ArrayList<Fragment> fragments) {        if ((list == null) && (fm == null) || (fragments == null)) {            LogUtil.w(TAG, "setFragments is fail. params is null");            return;        }        FragmentTransaction ft = fm.beginTransaction();        for (int i = 0; i < list.size(); i++) {            Fragment fragment = (Fragment) list.get(i);            ft.remove(fragment);        }        ft.commit();        ft = null;        fm.executePendingTransactions();        this.list.addAll(fragments);        notifyDataSetChanged();    }    /*        @Override        public Object instantiateItem(ViewGroup container, int position) {            Fragment fragment = (Fragment) super.instantiateItem(container, position);            return fragment;        }            @Override        public int getItemPosition(Object object) {            return POSITION_NONE;        }    */}