How do I change the text style of a selected tab when using tabLayout?

Question

I want to make the text of a selected tab bold. How can I do this either through xml or java code, whatever is easier.

Answer 1

Hello Friends Try This

first add this method

  private void updateCounter() {
    try {
        for (int i = 0; i < tabLayout.getTabCount(); i++) {
            updateTab(tabLayout.getTabAt(i));
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

second add this Method

   private void updateTab(TabLayout.Tab tab) {
    Method method;
    try {
        method = TabLayout.Tab.class.getDeclaredMethod("getCustomView");
        method.setAccessible(true);

        View tabView = (View) method.invoke(tab, new Object[0]);

        TextView tv_title = null;

        if (tabView != null) {
            tv_title = tabView.findViewById(R.id.tv_title);
        }

        switch (tab.getPosition()) {
            case 0:
                if (tv_title != null) {
                    tv_title.setText(tabTitle[0]);

                    if(viewPager.getCurrentItem() == 0){
                        tv_title.setTypeface(CustomerApplication.getInstance().getMontserratBold());
                    }else{
                        tv_title.setTypeface(CustomerApplication.getInstance().getMontserratMedium());
                    }
                }
                break;

            case 1:
                if (tv_title != null) {
                    tv_title.setText(tabTitle[1]);

                    if(viewPager.getCurrentItem() == 1){
                        tv_title.setTypeface(CustomerApplication.getInstance().getMontserratBold());
                    }else{
                        tv_title.setTypeface(CustomerApplication.getInstance().getMontserratMedium());
                    }
                }
                break;
        }
        tab.setCustomView(tabView);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

last call view pager change listener

private final ViewPager.OnPageChangeListener onPageChangeListener = new ViewPager.OnPageChangeListener() {
    @Override
    public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

    }

    @Override
    public void onPageSelected(int position) {
        updateCounter();
    }

    @Override
    public void onPageScrollStateChanged(int state) {

    }
};