Android 如何在垂直viewpager中实现堆栈转换

如何在VerticalViewPager中实现堆栈转换，下面是我的代码，我已经用堆栈转换实现了VerticalViewPager，但问题是它正在淡出，我想在浏览页面时消除淡出

 public class VerticalViewPager extends Activity  {

private static final float MIN_SCALE = 0.75f;
PagerAdapter adapter;
private static final float MIN_ALPHA = 0.75f;
private boolean a;


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

    final fr.castorflex.android.verticalviewpager.VerticalViewPager verticalViewPager = (fr.castorflex.android.verticalviewpager.VerticalViewPager) findViewById(R.id.verticalviewpager);


    adapter = new MyCustomAdapter(VerticalViewPager.this, SplashScreen.newsidArray, SplashScreen.newsdescArray, SplashScreen.newstitleArray,
            SplashScreen.newsimageArray, SplashScreen.newsdateArray, SplashScreen.newsauthorArray, SplashScreen.newsurlArray);
    verticalViewPager.setOffscreenPageLimit(1);
    verticalViewPager.setAdapter(adapter);

    verticalViewPager.setPageTransformer(false, new PageTransformer() {


        @Override
        public void transformPage(View view, float position) {
            int pageWidth = view.getWidth();
            int pageHeight = view.getHeight();

            if (position < -1) { // [-Infinity,-1)
                // This page is way off-screen to the left.
                view.setAlpha(0);

            } else if (position <= 0) { // [-1,0]

                view.setAlpha(1);

            } else if (position <= 1) { // (0,1]
                // Fade the page out.
                view.setAlpha(1F-position);
                view.setTranslationY((int) ((float) (pageHeight) * -position));


            } else { // (1,+Infinity]
                // This page is way off-screen to the right.
                view.setAlpha(0);
            }






        }
    });
    verticalViewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
        public void onPageScrollStateChanged(int state) {



        }

        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {


            int page = verticalViewPager.getCurrentItem();

            Log.e("page",String.valueOf(page));

            if((page+1)== MyCustomAdapter.nodata){
               // Toast.makeText(VerticalViewPager.this,"No News Available To Swipeup",500).show();

                final Toast toast = Toast.makeText(getApplicationContext(), "No News Available To Swipeup", Toast.LENGTH_SHORT);
                toast.show();

                Handler handler = new Handler();
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        toast.cancel();
                    }
                }, 500);
            }

        }

        public void onPageSelected(int position) {

            SplashScreen.myCustomPosition = position;


        }
    });

}


}

公共类VerticalViewPage扩展活动{
专用静态最终浮动最小刻度=0.75f；
PagerAdapter适配器；
专用静态最终浮动最小值α=0.75f；
私有布尔a；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.VerticalViewPage）；
最终fr.castorflex.android.VerticalViewPage.VerticalViewPage VerticalViewPage=（fr.castorflex.android.VerticalViewPage.VerticalViewPage）findViewById（R.id.VerticalViewPage）；
adapter=新的MyCustomAdapter（VerticalViewPage.this、SplashScreen.newsidArray、SplashScreen.newsdescArray、SplashScreen.newstitleArray、，
SplashScreen.newsimageArray、SplashScreen.newsdateArray、SplashScreen.newsauthorArray、SplashScreen.newsurlArray）；
VerticalviewPage.setOffscreenPageLimit（1）；
VerticalViewPage.setAdapter（适配器）；
verticalViewPager.setPageTransformer（false，新的PageTransformer（）{
@凌驾
公共页面（视图、浮动位置）{
int pageWidth=view.getWidth（）；
int pageHeight=view.getHeight（）；
if（位置<-1）{/[-无穷大，-1）
//这个页面在屏幕的左边。
视图。setAlpha（0）；
}如果有其他信息（是否对此进行了更新）？