viewpager setonpagechangelistener deprecated

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

ViewPager.setOnPageChangeListener is deprecated now. Need to use ViewPager.addOnPageChangeListener instead.

for example,

ViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
            
        }

        @Override
        public void onPageSelected(int position) {

        }

        @Override
        public void onPageScrollStateChanged(int state) {

        }
    });

You can find this Here.

this worked for me:

viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener(){

    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {       
        conterchange.setText(""+(1+position));
    }

    @Override
    public void onPageSelected(int position) {
    }

    @Override
    public void onPageScrollStateChanged(int state) {
    }
});

Use ViewPager.addOnPageChangeListener instead of ViewPager.setOnPageChangeListener.

Just in case someone needs the solution in kotlin:

viewPager.addOnPageChangeListener (object: ViewPager.OnPageChangeListener {
        override fun onPageScrollStateChanged(state: Int) {
            TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
        }

        override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {
            TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
        }

        override fun onPageSelected(position: Int) {
            TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
        }

    })

You can achieve via SimpleOnPageChangeListener Below is the Code:

private Fragment page = null;
/** Defining a listener for pageChange */
		ViewPager.SimpleOnPageChangeListener pageChangeListener = new ViewPager.SimpleOnPageChangeListener(){
			@Override
			public void onPageSelected(int position) {
				super.onPageSelected(position);
				
				page = getSupportFragmentManager().findFragmentByTag("android:switcher:" + R.id.pager_selectPhotos + ":" + position);

				System.out.println(page);
				switch (position) {
				case 0:
					
					break;
				case 1:
					
					break;

				default:
					break;
				}
			}
		};
		/** Setting the pageChange listener to the viewPager */
		_pager.setOnPageChangeListener(pageChangeListener);

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()