viewpager setonpagechangelistener deprecated

Question

Today I\'m trying to set ViewPager.setOnPageChangeListener and I\'ve found out that it\'s deprecated.

Answer 1

1. Create an interface if need be;

   public interface FragmentLifecycle {
   public void onPauseFragment();
   public void onResumeFragment();
   

   }

2. Implement Interface in every fragment in viewpager as shown

 public class FragmentCast extends Fragment implements FragmentLifecycle {
  @Override
    public void onPauseFragment() {
        Log.i(TAG, "onPauseFragment()");
        Toast.makeText(getActivity(), "onPauseFragment():" + TAG, Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onResumeFragment() {
        Log.i(TAG, "onResumeFragment()");
        Toast.makeText(getActivity(), "onResumeFragment():" + TAG, Toast.LENGTH_SHORT).show();
    }

1. List this is how u user the addOnPageListener

   enter viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() { int currentPosition = 0;

       @Override
       public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
   
       }
   
       @Override
       public void onPageSelected(int position) {
   
   
           FragmentLifecycle   fragmentLifecycleToShow =(FragmentLifecycle) viewPager.getAdapter().instantiateItem(viewPager, viewPager.getCurrentItem());
           fragmentLifecycleToShow.onResumeFragment();
   
           FragmentLifecycle   fragmentLifecycleToHide =(FragmentLifecycle) viewPager.getAdapter().instantiateItem(viewPager, currentPosition);
           fragmentLifecycleToHide.onPauseFragment();
   
           currentPosition = position;
       }
   
       @Override
       public void onPageScrollStateChanged(int state) {
   
       }
   });
   

2. Implement your calls in the onPauseFragment() or onResumeFragment()