Get the current position of a ViewPager on Android

mViewPager.getCurrentItem()

or you can use event for this:

ViewPager.setOnPageChangeListener(OnPageChangeListener listener)

References
https://stackoverflow.com/questions/8258759/getting-the-current-position-of-a-viewpager
https://stackoverflow.com/questions/8117523/how-do-you-get-the-current-page-number-of-a-viewpager-for-android