与FragmentPagerAdapter一起使用setTag

Question

使用setTag时，如何Fragment FragmentPagerAdapter。任何建议

public class MainFragmentAdapter extends FragmentPagerAdapter {
 public Fragment getItem(int arg0) {
            switch (arg0) {
            case 0:
                SettingsFragment fr = new SettingsFragment();

<击> fr.setTag（）;

return fr;
        ...
    ....
    ...

            }