ViewPager update fragment on swipe

Question

i have a problem that i have been struggling with for the past 2 days.

I am building an app that uses ActionBar, ViewPager & FragmentPagerAdapter. The code for

Answer 1

setOnPageChangeListener has been deprecated. Instead, you should use addOnPageChangeListener.

mViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
        @Override
        public void onPageScrolled(final int i, final float v, final int i2) {
        }
        @Override
        public void onPageSelected(final int i) {
            YourFragmentInterface fragment = (YourFragmentInterface) mPagerAdapter.instantiateItem(mViewPager, i);
            if (fragment != null) {
                fragment.fragmentBecameVisible();
            } 
        }
        @Override
        public void onPageScrollStateChanged(final int i) {
        }
    });