How to change Viewpager tab colour dynamically?

Question

How to change colour of Tabs like this? When I click/swipe to green or any other tab, the tab colour should change to that appropriate colour and rest of other tabs colour

Answer 1

Finally I solved it. Thanks to @Xcihnegn for his idea. This is the solution:

/* For setting default selected tab */

    actionBar.setSelectedNavigationItem(0);
    actionBar.getTabAt(0).setCustomView(R.layout.fragmnt_red);  

    /**
     * on swiping the viewpager make respective tab selected
     * */
    viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {

        @Override
        public void onPageSelected(int position) {

    /*on changing the page make respected tab selected */           
            actionBar.setSelectedNavigationItem(position);

                if(position == 0)
                {

                    actionBar.getSelectedTab().setCustomView(R.layout.fragmnt_red);

                }else if(position == 1)
                {
                    actionBar.getSelectedTab().setCustomView(R.layout.fragmnt_orange);

                }else if(position == 2)
                {
                    actionBar.getSelectedTab().setCustomView(R.layout.fragmnt_green);
                }

            }

        }

        @Override
        public void onPageScrolled(int arg0, float arg1, int arg2) {
        }

        @Override
        public void onPageScrollStateChanged(int arg0) {
        }
    });
}

@Override
public void onTabSelected(ActionBar.Tab tab, android.support.v4.app.FragmentTransaction fragmentTransaction) {
    viewPager.setCurrentItem(tab.getPosition());
}

When one tab gets unselected, setCustomView(null) changes its layout back to its original black colour. So only selected tabs will change colour. Unselecting the tabs will change its layout to original form.

@Override
public void onTabUnselected(ActionBar.Tab tab,     android.support.v4.app.FragmentTransaction fragmentTransaction) {

        if(tab.getPosition() == 0)
        {
            actionBar.getTabAt(0).setCustomView(null);

        }else if(tab.getPosition() == 1)
        {
            actionBar.getTabAt(1).setCustomView(null);

        }else if(tab.getPosition() == 2)
        {
            actionBar.getTabAt(2).setCustomView(null);
        }
    } 
}

To remove unnecessary padding appear when setting the custom view we should use this code in styles.xml.

Dont forget to add the this code just above setcontentview in your activity.

settheme(R.styles.CustomActionbartab);

Custom layout for tabs.