ViewPager setCurrentItem Slide

Question

I have an Activity contains ViewPager , first Fragment in this ViewPager contains ListView and when I click on any Item it replaces this Fragment with selected one , I use setCurrentItem(selectedItem,true)//for smooth scroll but ViewPager slides over all Fragments before selected Fragment I want it to slide to selected Fragment only not over all fragments I tried to use PageTransfrom.transformPage like that

@Override
public void transformPage(View page, float position) {
    int currentItem = viewPager.getCurrentItem();
    if (currentItem != selectedItem)
        page.setVisibility(View.GONE);
}

but with no luck

Answer 1

One possible solution is to modify the PagerAdapter to always return the page you want on item #2.

When clicked on any item from the first page, first change the implementation of the method getItem(int position) of the PagerAdapter, (this is easy if your PagerAdapter is implemented in the same class file of your code), to return the page you want when position == 2, and then call setCurrentItem(2, true). This could make a smooth scroll to the selected page, directly. You may also need to change getCount() to limit the count to only 2, otherwise the next page may not be the expected one.

But this method dismisses the other pages. User could only scroll back to the first page and then navigate to another page. If you want keep the natural order of the pages by manual scroll (not by click), you could restore getItem(int position) to your default implementation once the scoll (by click) stops, and reload the stopped current page to the natural order by calling setCurrentItem(position, false)(immediately, not smoothly this time), then user can scroll back and forth manually.