CODEWITHSUNDEEP
androidandroid-tablayout
Gürkan Çatak
Gürkan Çatak

Reputation: 953

How do I listen for tab changes in TabLayout?

I am using Fragment class and TabLayout with ViewPager to implement swipe tabs.

I have 3 java class:

(OneFragment extends Fragment, TwoFragment extends Fragment, ThreeFragment extends Fragment and MainActivity extends AppCompatActivity)

Also I have 4 different xml files for all these class. In fact, I designed my code according to this tutorial

Now I want to listen when user switch between tabs. For example When the user goes 1st tab to 2nd tab, I want this to execute:

Toast t = Toast.makeText(getActivity(),"You are exit from 1st tab", Toast.LENGTH_LONG);
t.show();

Or when the user goes to 1st or 3rd tab from 2, this should be executed:

Toast t = Toast.makeText(getActivity(),"You are exit from 2nd tab", Toast.LENGTH_LONG);
t.show();

It is interesting that I couldn't any answer for TabLayout, although there are tens of answers for Tabhost.

How can I design my code to understand "which tab is changing, What is previous tab?" in TabLayout ?

Note: I used, tried to override onDestroyView(), onDestroy() and onHiddenChanged() but I couldn't solve my problem. Only onDestroy() worked but it is working when the user exits the application as well.

Upvotes: 2

Views: 2656

Answers (1)

Stephen Vinouze
Stephen Vinouze

Reputation: 2065

You will need to implement the TabLayout.OnTabSelectedListener interface for that.

Use addOnTabSelectedListener and removeOnTabSelectedListener methods to do so. Note that setOnTabSelectedListener is now deprecated.

Upvotes: 3

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