Save state when viewpager is used with fragment fragmentpageradapter

The principle is hide show If you want to achieve other situations, you can replace

public class ViewPagerAdapter extends FragmentPagerAdapter {
    

    private List<Fragment> fragmentList;
    FragmentManager fragmentManager;
    public ViewPagerAdapter(@NonNull FragmentManager fm) {
    
        super(fm);
        this.fragmentManager = fm;
    }

    @NonNull
    @Override
    public Fragment getItem(int position) {
    
        return fragmentList.get(position);
    }

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


    public void setFragmentList(List<Fragment> fragmentList) {
    
        if (this.fragmentList != null) this.fragmentList.clear();
        this.fragmentList = fragmentList;
    }

    @NonNull
    @Override
    public Object instantiateItem(@NonNull ViewGroup container, int position) {
    
       Fragment fragment = (Fragment) super.instantiateItem(container, position);
        fragmentManager.beginTransaction().show(fragment).commit()
        return fragment;
    }

    @Override
    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
    
        //super.destroyItem(container, position, object);
        Fragment fragment = fragmentList.get(position);
        fragmentManager.beginTransaction().hide(fragment).commit();
    }
}