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

This is a Kotlin code for this solution

 for (i in 0..tabLayout.tabCount){
        val tab:TabLayout.Tab? = tabLayout.getTabAt(i)
        if (tab != null){
            val tabTextView:TextView = TextView(this)
            tab.customView = tabTextView

            tabTextView.layoutParams.width = ViewGroup.LayoutParams.WRAP_CONTENT
            tabTextView.layoutParams.height = ViewGroup.LayoutParams.WRAP_CONTENT

            tabTextView.text = tab.text

            if (i == 0){
                // This set the font style of the first tab
                tabTextView.setTypeface(null,BOLD)
                
            }
            if (i == 1){
                // This set the font style of the first tab

                tabTextView.setTypeface(null,NORMAL)
                
            }
        }
    }
    tabLayout!!.addOnTabSelectedListener(object: TabLayout.OnTabSelectedListener {
        override fun onTabSelected(tab: TabLayout.Tab?) {
            viewPager.currentItem = tab!!.position

            val text:TextView = tab.customView as TextView

            
            text.setTypeface(null,BOLD)
            


        }

        override fun onTabUnselected(tab: TabLayout.Tab?) {
            val text:TextView = tab?.customView as TextView


            text.setTypeface(null,NORMAL)
            

        }

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

        }

    })