Nullpointerexception: Attempt To Invoke Virtual Method 'void Android.support.v4.app.fragment.setmenuvisibility(boolean)' On A Null Object Reference

I am trying to implement viewpager with Tablayout. In this everything is fine working properly, but the one problem is when i come back from another screen view pager lost their po

Solution 1:

Your code is right you only have to change the placement of code put your

tabLayout.setupWithViewPager(viewPager);

,

tabLayout.addTab(tabLayout.newTab().setText("Websites"));
tabLayout.addTab(tabLayout.newTab().setText("Mobile Application"));
tabLayout.addTab(tabLayout.newTab().setText("Graphics"));
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);

after setadapter in viewPager

 viewPager.setAdapter(adapter);
 viewPager.setOffscreenPageLimit(3);