How change ActionBar colour when swiping between fragments (Material Design)?

Question

I have an app i am doing, which has a FragmentPagerAdapter setup with 3 fragments to swipe between on the main page.

I have been trying to get it setup so as you swi

Answer 1

You could make your FragmentPagerAdapter implements ViewPager.OnPageChangeListener.

Then, override onPageSelected

@Override
public void onPageSelected(int position) {
    // get the action bar here and change color
}

As for the color change animation. I didn't try it, but this is from another stackoverflow issue :

Android objectAnimator animate backgroundColor of Layout