ViewPager.setOffscreenPageLimit(0) doesn't work as expected

Question

The fragments I use in my ViewPager instance are quite resource intensive, so I\'d only like to load one at a time. When I try the following:

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Answer 1

I kind of have the same problem. I found some useful code on this site and transform it.

The min int for mViewPager.setOffscreenPageLimit(...); is 1, so even if you change it to 0 you will still have 2 pages loaded.

First thing to do is to create a static int we will call maxPageCount and override FragmentStatePagerAdapter method getCount() to return maxPageCount:

    @Override
    public int getCount() {
        return maxPageCount;
    }

Create then a static method accessible from any where in the program that will allow you to change this maxCount:

public static void addPage(){
    maxPageCount++; //or maxPageCount = fragmentPosition+2
    mFragmentStatePagerAdapter.notifyDataSetChanged(); //notifyDataSetChanged is important here.
}

Now initialize maxPageCount to 1. When ever you want you can add another page. In my case when I needed the user to treat the current page first before generated the other. He do it and then, without problem can swipe to the next page.

Hope it help someone.