Determine when a ViewPager changes pages

Question

I have three pages (Fragments) inside a ViewPager, however I only want to display a menu item for two of those pages.

The code given in a previous SO answer does not

Answer 1

Use the ViewPager.onPageChangeListener:

viewPager.addOnPageChangeListener(new OnPageChangeListener() {
    public void onPageScrollStateChanged(int state) {}
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {}

    public void onPageSelected(int position) {
        // Check if this is the page you want.
    }
});