ViewPager findViewById is null after screen rotation in android

问题

I'm using a viewPager to display some forms. My problem is when i rotate the screen of the device and the viewPager is created again, it doesn't see the viewPager when he reaches the findViewById, it's always null. I have no idea how to handle it when rotation change. I tried the onConfigurationChange but it doesn't work, I tried to save the Id of the pager and then retrieve it using that saved id but nothing too. So I'm quite blocked now.

pager = (CustomViewPager) getActivity().findViewById(R.id.pager);
pager.setPagingEnabled(false);

In onViewCreated

回答1:

do this in onActivityCreate of the fragment

pager = (CustomViewPager) getActivity().findViewById(R.id.pager);
pager.setPagingEnabled(false);

来源：https://stackoverflow.com/questions/21699006/viewpager-findviewbyid-is-null-after-screen-rotation-in-android