片段中的标签布局

Question

我正在尝试在片段中创建标签布局，但我在创建ViewPagerAdapter时遇到错误，因为它无法解析方法getFragmentManger（） 我尝试使用getActivity但问题仍然存在

这是片段的代码

public class HomeFragment extends Fragment {

private TabLayout tabLayout;
private ViewPager viewPager;

public static final String TAG = "HF";
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    return inflater.inflate(R.layout.fragment_home, container, false);

    viewPager = (ViewPager) getActivity().findViewById(R.id.viewpager);
    setupViewPager(viewPager);

    tabLayout = (TabLayout) getActivity().findViewById(R.id.tabs);
    tabLayout.setupWithViewPager(viewPager);
}

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
}

private void setupViewPager(ViewPager viewPager) {
    ViewPagerAdapter adapter = new ViewPagerAdapter(getFragmentManager());
    adapter.addFragment(new OneFragment(), "ONE");
    adapter.addFragment(new TwoFragment(), "TWO");
    adapter.addFragment(new ThreeFragment(), "THREE");
    viewPager.setAdapter(adapter);
}

class ViewPagerAdapter extends FragmentPagerAdapter {
    private final List<android.support.v4.app.Fragment> mFragmentList = new ArrayList<>();
    private final List<String> mFragmentTitleList = new ArrayList<>();

    public ViewPagerAdapter(FragmentManager manager) {
        super(manager);
    }

    @Override
    public android.support.v4.app.Fragment getItem(int position) {
        return mFragmentList.get(position);
    }

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

    public void addFragment(android.support.v4.app.Fragment fragment, String title) {
        mFragmentList.add(fragment);
        mFragmentTitleList.add(title);
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return mFragmentTitleList.get(position);
    }
}

}