如何在ViewPager中重用布局/片段

Question

Hi there I am wondering what is the correct way if I would like to add different instance of a Fragment which uses the same Layout with different content in a ViewPager .

So for a better understanding I create my Fragments with an createInstance() method and pass an id with which it gets content for a list from a database . I add them to my FragmentPagerAdapter .

So what I get is the first Fragment added multiple times without getting its content for the actual id .

How could I force the ViewPager to treat the Fragments individually ?

*Edit:

Okay I totally failed within my createInstance() method which was more a getInstance() method and returned the same instance every time...

Answer 1

You need to set adapter.notifyDataSetChanged .

Refer below

class MyFragmentAdapter extends FragmentPagerAdapter{

       public MyFragmentAdapter(FragmentManager fm) {
           super(fm);
       }

       @Override
       public Fragment getItem(int position) {
           return new PagerFragment(arrayListUri.get(position),position);
       }

       @Override
       public int getCount() {
           return 0;
       }
}