setOnTabSelectedListener is deprecated

As setOnTabSelectedListener is deprecated now, you can use the new method

addOnTabSelectedListener(OnTabSelectedListener)

This change allows to add multiple tab selection listeners to a single TabLayout.

in kotlin usage like below code;

   tabLayoutView.addOnTabSelectedListener(object : TabLayout.OnTabSelectedListener {
                override fun onTabReselected(p0: TabLayout.Tab?) {
                }

                override fun onTabUnselected(p0: TabLayout.Tab?) {

                }

                override fun onTabSelected(p0: TabLayout.Tab?) {
                    viewPager.currentItem = tabLayoutView.selectedTabPosition
                }


            })

May i know whats going on ?

Deprecated means that they decided this is not a good way to do it or they have found a better way of doing it, and this deprecated method will be removed in the future.

The fix is to use addOnTabSelectedListener instead of setOnTabSelectedListener.
It works almost the same way.

The difference is that with addOnTabSelectedListener:

• you can add multiple listeners. With setOnTabSelectedListener you could only have one.
• you should remove the listener when you're done with it, with removeOnTabSelectedListener.

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General rule of thumb: never use deprecated methods.