TabLayout update tab content with a custom view

Question

I'm using TabLayout of the new material design and i have a problem, i can't update tab content of a custom view once the tab is created:

I can simplify my method inside my PagerAdapter with

public View setTabView(int position, boolean selected) {
    View v = LayoutInflater.from(context).inflate(R.layout.default_tab_view, null);
    tv = (TextView) v.findViewById(R.id.tabTextView);
    if(selected)
        tv.setText("SELECTED");
    else 
        tv.setText("UNSELECTED");       
    return v;
}

And in activity i can simplify my code with:

TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
ViewPager pager = (ViewPager) findViewById(R.id.viewpager);
PagerAdapter adapter = new PagerAdapter(getSupportFragmentManager());
pager.setAdapter(adapter);
tabLayout.setupWithViewPager(pager);
for (int i = 0; i < tabLayout.getTabCount(); i++) {
    boolean isFirstTab = i == 0;
    TabLayout.Tab tab = tabLayout.getTabAt(i);
    View v;
    v = adapter.setTabView(i, isFirstTab);
    v.setSelected(isFirstTab);
    tab.setCustomView(v);
}

tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
    @Override
    public void onTabSelected(TabLayout.Tab tab) {
        adapter.setTabView(tab.getPosition(), true);
    }

    @Override
    public void onTabUnselected(TabLayout.Tab tab) {
        adapter.setTabView(tab.getPosition(), false);
    }

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

    }
});

The tabs' titles are set right when the app starts but when i change tab, the content still remains the same.

Answer 1

Ok I think it's bug on android design support library v22.

Because You are talking about the changes in content but I can't change the color of Text. Once the tab are created and if you change the layout it will not reflecting.

And As i have seen your code you are giving the custom layout using setCustomView. and for changing a text you are calling again the method setTabView(). Instead of that there should be method getCustomView() so that you can change the layout. There is a method in a TabLayout.Tab.getCustomView but it doesn't have identifier and I have report this bug.

https://code.google.com/p/android/issues/detail?id=177492

[Update 08-07-2015]

Finally bug is accepted by android bug source traking and marked as Future Release . So we can say that bug will no more exist on future library. and we can have method getCustomView() so that we can easily get our custom view.

[Update 18-08-2015]

Finally the bug is resolved Released in the v23 support libs . Just update support library using SDK manager and you have getCustomView() as a public.

just change this line in gradle

compile 'com.android.support:design:23.0.0'

and make sure compile and target sdk set to 23.

please check my code working fine for me

TabLayout.Tab tab=tabLayout.getTabAt(position);         
View view=tab.getCustomView();         
TextView txtCount= (TextView) 
view.findViewById(R.id.txtCount);         
txtCount.setText(count+"");