如何在titlepaindicator中按标题并转到此片段

Question

我在我的应用程序TitlePageIndicator中使用ViewPager并且工作正常。我可以左右开关，一切正常。问题是，我在其他应用程序中看到，如果您触摸viewpager中的某个标题，您也可以转到此屏幕。但不知道我该怎么做。

提前致谢

MainActivity

 private ViewPager pager = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        this.pager = (ViewPager) this.findViewById(R.id.pager);

        MyFragmentPagerAdapter adapter = new MyFragmentPagerAdapter(
                getSupportFragmentManager());
        adapter.addFragment(Europe.newInstance(getResources()
                .getColor(R.color.colorAccent), "Europe"));
        adapter.addFragment(America.newInstance(getResources()
                .getColor(R.color.colorAccent), "America"));
        adapter.addFragment(Asia.newInstance(getResources()
                .getColor(R.color.colorAccent), "Asia"));
        adapter.addFragment(Africa.newInstance(getResources()
                .getColor(R.color.colorPrimaryDark), "Africa"));
        adapter.addFragment(Oceania.newInstance(getResources()
                .getColor(R.color.colorAccent), "Oceania"));

        this.pager.setAdapter(adapter);

        TitlePageIndicator indicator = (TitlePageIndicator) findViewById(R.id.indicator);


        final float density = getResources().getDisplayMetrics().density;
        indicator.setFooterColor(R.color.setTextColor);
        indicator.setFooterLineHeight(1 * density); //1dp
        indicator.setFooterIndicatorHeight(3 * density); //3dp
        indicator.setFooterIndicatorStyle(TitlePageIndicator.IndicatorStyle.Underline);
        indicator.setTextColor(0xAA000000);
        indicator.setTextSize(60);

        indicator.setSelectedColor(R.color.setTextColor);
        indicator.setSelectedBold(true);
        indicator.setViewPager(pager);
    }

FragmentAdapter

public class MyFragmentPagerAdapter extends FragmentPagerAdapter {

    private final String[] titles = {"one", "two", "three", "four"};
    private List<Fragment> fragments;


    public MyFragmentPagerAdapter(FragmentManager fm) {
        super(fm);
        this.fragments = new ArrayList<Fragment>();
    }


    public void addFragment(Fragment fragment) {
        this.fragments.add(fragment);
    }

    @Override
    public Fragment getItem(int position) {
        switch (position) {
            case 0:
                return one.newInstance(0, "Page # 1");
            case 1:
                return two.newInstance(1, "Page # 2");
            case 2:
                return three.newInstance(2, "Page # 3");
            case 3:
                return four.newInstance(3, "Page # 4");
            default:
                return null;
        }
    }


    @Override
    public CharSequence getPageTitle(int position) {
        return titles[position];
    }

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

}