ViewPager2 - How to use registerOnPageChangeCallback to check view pager item position

Question

How can I use ViewPager2's registerOnPageChangeCallback facility to check the position of the currently visible ViewPAger2 fragment? I know this will consists of an if/when statement but don't know the correct way to implememnt this.

mViewPager.registerOnPageChangeCallback(object : ViewPager2.OnPageChangeCallback() {
            override fun onPageSelected(position: Int) {
                if (mViewPager.currentPage) == 0 {
                // do something
                }
                else if (mViewPager.currentPage) == 1 {
                // do something
                }
                else {
                // do something
                }
                super.onPageSelected(position)
            }
        })

Answer 1

Use the passed position to know where you are:

 mViewPager.registerOnPageChangeCallback(object : ViewPager2.OnPageChangeCallback() {
            override fun onPageSelected(position: Int) {
                if (position == 0) {
                // you are on the first page
                }
                else if (position == 1) {
                // you are on the second page
                }
                else if (position == 2){
                // you are on the third page
                }
                super.onPageSelected(position)
            }
        })