FragmentPagerAdapter notifyDataSetChanged not working

What Nik Myers is saying is correct. However there is a piece missing. When notifyDataSetChanged is called, the method getItemPosition is called. You need to override this to get the fragments to reload.

 @Override
    public int getItemPosition(Object object) {
        // Causes adapter to reload all Fragments when
        // notifyDataSetChanged is called
        return POSITION_NONE;
    }

I'm not sure about this, but you can try to use FragmentStatePagerAdapter instead of FragmentPagerAdapter . The thing is, i've also run into this issue, and it helped me

I have faced the similar problem when I was working on my last project. So I found few Solution.

1. by overriding getItemPosition in the pager adaptor but this is not a good idea.

   @Override
   public int getItemPosition(Object object) {
       // it will recreate all Fragments when
       // notifyDataSetChanged is called
       return POSITION_NONE;
   }
   

2. The second one is cabezas Solution.

3. Most Stable solution override getItemPosition in below fashion:

       @Override
       public int getItemPosition(Object object) {
           if (object instanceof MyFragment) {
               // Create a new method notifyUpdate() in your fragment 
               // it will get call when you invoke 
               // notifyDatasetChaged();
               ((MyFragment) object).notifyUpdate();
           }
           //don't return POSITION_NONE, avoid fragment recreation.
           return super.getItemPosition(object);
       }