Tab change listener android

Question

My HomeActivity extends AppCompatActivity that uses 2 tabs.

public class HomeActivity extends AppCompatActivity {

    private SectionsPagerAdapter mSection         


        

Answer 1

Depends on what you want. If you just want to know if the tab page changes, or find out which tab position was selected, use:

mViewPager.setOnPageChangeListener(new OnPageChangeListener() {
    public void onPageScrollStateChanged(int state) {

    }
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

    }

    public void onPageSelected(int position) {

    }
});

Else, if you want to keep track of the tab itself, you will have to implement TabLayout.OnTabSelectedListener like this:

public class HomeActivity extends AppCompatActivity implements TabLayout.OnTabSelectedListener

And add this methods to your HomeActivity class:

@Override
public void onTabSelected(TabLayout.Tab tab) {

}

@Override
public void onTabUnselected(TabLayout.Tab tab) {

}

@Override
public void onTabReselected(TabLayout.Tab tab) {

}