onPageSelected doesn't work for first page

Question

My pager adapter ( extends PagerAdepter ) has a textview in it. And I update this textview with MainActivity\'s onPageSelected . Its update textview for position > 0 , but start

Answer 1

For me work next code

    viewPager.addOnPageChangeListener(myOnPageChangeListener);

.

    ViewPager.OnPageChangeListener myOnPageChangeListener = new ViewPager.OnPageChangeListener() {

    //declare key
    Boolean first = true;

    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
        if (first && positionOffset == 0 && positionOffsetPixels == 0){
            onPageSelected(0);
            first = false;
        }
    }

    @Override
    public void onPageSelected(int position) {
        //do what need
    }

    @Override
    public void onPageScrollStateChanged(int state) {
    }
};