MainActivityから別のアクティビティへの変数のタブフラグメントへの受け渡し

MainActivityに、StoriesActivityに正常に渡した変数があります。

問題は、そこからタブであるStoriesFragmentに移動することですTabLayout。

インテントとバンドルについては理解していますが、この場合にどのように機能するかわかりません。

これはStoriesActivityです：

public class StoriesActivity extends AppCompatActivity {

    //This is our tablayout
    private TabLayout tabLayout;

    //This is our viewPager
    private ViewPager viewPager;

    private Toolbar toolbar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_stories);

        /* +++ START Intent +++ */
        Bundle extras = getIntent().getExtras();

        final int authorID = extras.getInt("author_id");
        final String authorName = extras.getString("author_name");
        Log.i("click", Integer.toString(authorID));
        // this is successful
        /* +++ END Intent +++ */

        toolbar = (Toolbar) findViewById(R.id.toolbar);
        toolbar.setTitle(authorName);
        setSupportActionBar(toolbar);

        toolbar.setNavigationOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                finish();
            }
        });

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

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

    private void setupViewPager(ViewPager viewPager) {
        ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
        adapter.addFragment(new StoriesFragment(), "Stories");
        adapter.addFragment(new CollectionsFragment(), "Collections");
        viewPager.setAdapter(adapter);
    }

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

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

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

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

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

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

そしてこれはStoriesFragmentです（authorIDStoriesActivityから変数にアクセスしていないため、現時点では機能しません）：

public class StoriesFragment extends Fragment {

    public StoriesFragment() {
        // Required empty public constructor
    }

    private ListView storiesListView;

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

        // link ListView object with XML ListView
        storiesListView = (ListView) findViewById(R.id.stories_list_view);

        // create new instance of DatabaseHelper
        DatabaseHelper db = new DatabaseHelper(this);

        // create list of stories through getAllStories method
        List<Book> storyList = db.getAllStories(authorID);

        // create new ArrayAdapter
        ArrayAdapter<Book> arrayAdapter =
                new ArrayAdapter<Book>(this, android.R.layout.simple_list_item_1, storyList);

        // link ListView and ArrayAdapter
        storiesListView.setAdapter(arrayAdapter);

        Log.i("test", storyList.toString());

        storiesListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {

                Book story = (Book) storiesListView.getItemAtPosition(i);
                //Log.i("click", story);

                Intent intent = new Intent(StoriesActivity.this, StoryBodyActivity.class);
                intent.putExtra("story", story.getTitle());
                startActivity(intent);

                //Log.i("click", "That's a click!");
            }
        });

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_stories, container, false);
    }

}

StoriesTabsAdapter：

public class StoriesTabsAdapter extends FragmentPagerAdapter {

    int mNumOfTabs;


    public StoriesTabsAdapter(FragmentManager fm, int NumOfTabs) {
        super(fm);
        this.mNumOfTabs = NumOfTabs;
    }

    private String[] tabTitles = new String[]{"Stories", "Collections"};

    // overriding getPageTitle()
    @Override
    public CharSequence getPageTitle(int position) {
        return tabTitles[position];
    }

    @Override
    public Fragment getItem(int position) {

        switch (position) {
            case 0:
                StoriesFragment tab1 = new StoriesFragment();
                return tab1;
            case 1:
                CollectionsFragment tab2 = new CollectionsFragment();
                return tab2;
            default:
                return null;
        }

    }

    @Override
    public int getCount() {
        return tabTitles.length;
    }

}