tablayout change tab selected textsize

Question

Tablayout.tab cant change selected textsize in code

.

textAppearance can't set selectTextsize too.so how complete it?

Answer 1

Give the following a try. Note to implement the tab selected listener as well.

TextView title = (TextView)(((LinearLayout ((LinearLayout) mTabLayout.getChildAt(0)).getChildAt(tabPosition)).getChildAt(1));
title.setTextSize(...);

Answer 2

 class OnTabSelectedListener implements TabLayout.OnTabSelectedListener{
        @Override
        public void onTabSelected(TabLayout.Tab selectedTab) {
            LinearLayout tabLayout1 = (LinearLayout)((ViewGroup) tabLayout.getChildAt(0)).getChildAt(selectedTab.getPosition());
            TextView tabTextView = (TextView) tabLayout1.getChildAt(1);
           // tabTextView.setTypeface(tabTextView.getTypeface(), Typeface.BOLD);
            tabTextView.setTextSize(20);
        }

        @Override
        public void onTabUnselected(TabLayout.Tab unselectedTab) {
            LinearLayout tabLayout1 = (LinearLayout)((ViewGroup) tabLayout.getChildAt(0)).getChildAt(unselectedTab.getPosition());
            TextView tabTextView = (TextView) tabLayout1.getChildAt(1);
            //tabTextView.setTypeface(tabTextView.getTypeface(), Typeface.NORMAL);
            tabTextView.setTextSize(15);
        }

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

        }
    }

Do anything with textview Enjoy....

Answer 3

display bold text

tabLayout.addOnTabSelectedListener(tabSelectedListener)

private val tabSelectedListener = object : TabLayout.OnTabSelectedListener {
  override fun onTabSelected(tab: TabLayout.Tab?) {
    tab?.view?.children?.forEach {
      if (it is TextView) {
        it.post {
          it.setTypeface(ResourcesCompat.getFont(context, R.font.bold_font_name), Typeface.NORMAL)
        }
      }
    }
  }

  override fun onTabUnselected(tab: TabLayout.Tab?) {
    tab?.view?.children?.forEach {
      if (it is TextView) {
        it.post {
          it.setTypeface(ResourcesCompat.getFont(context, R.font.font_name), Typeface.NORMAL)
        }
      }
    }
  }

  override fun onTabReselected(tab: TabLayout.Tab?) {}
}