which viewpager settings should be set?

Question

My app has 3 tabs: tablyout, viewpager with fragmentPager adapter. I have a problem: first tab to second tab to third tab and back to first tab fragment restarted.

TextTabAdapter adapter = new TextTabAdapter(getSupportFragmentManager(), 1, fragmentList, tabTitleList); 
viewPager.setAdapter(adapter); 
tabLayout.setupWithViewPager(viewPager);

Answer 1

TextTabAdapter adapter = new TextTabAdapter(getSupportFragmentManager(), 1, fragmentList, tabTitleList); 
viewPager.setAdapter(adapter); 
tabLayout.setupWithViewPager(viewPager);
//set viewpager off screens, By default , it is one. 
viewPager.setOffscreenPageLimit(tabTitleList.size());