public class PagerActivity extends FragmentActivity {

    @InjectView(R.id.view_pager) protected ViewPager viewPager;

    protected ScreenSlidePagerAdapter pagerAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        CalligraphyConfig.initDefault("fonts/Roboto-Regular.ttf");
        setContentView(R.layout.activity_pager);
        ButterKnife.inject(this);

        List<Fragment> fragments = new ArrayList<Fragment>();
        fragments.add(new Fragment1());
        fragments.add(new Fragment2());
        fragments.add(new Fragment3());
        pagerAdapter = new ScreenSlidePagerAdapter(getSupportFragmentManager(), fragments);
        viewPager.setAdapter(pagerAdapter);
        viewPager.setPageTransformer(true, new FancyPageTransformer());
    }

    @Override protected void onResume() {
        super.onResume();
    }

    private class ScreenSlidePagerAdapter extends FragmentPagerAdapter {
        protected List<Fragment> fragments;

        public ScreenSlidePagerAdapter(FragmentManager fm, List<Fragment> fragments) {
            super(fm);
            this.fragments = fragments;
        }

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

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

    private class FancyPageTransformer implements ViewPager.PageTransformer {
        protected View innerView;

        @Override public void transformPage(View view, float position) {
            innerView = view.findViewById(R.id.innerView);
            if (innerView != null) {
                ViewHelper.setAlpha(innerView, 1 - Math.abs(position / 2));
                ViewHelper.setTranslationX(innerView, (float) (-position * 0.6 * view.getWidth()));
//                ViewHelper.setTranslationY(innerView, (float) ((1 - v) * 0.4 * view.getHeight()));
            }
        }
    }
}