MainActivity.kt

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        button.setOnClickListener {

            GlobalScope.launch(context = Dispatchers.Main) {
                println("launched coroutine 1")
                Thread.sleep(5000)
                println("Here after a delay of 5 seconds")
            }

            GlobalScope.launch(context = Dispatchers.Main) {
                println("launched coroutine 2")
            }

        }
    }
}