private val  customTabActivityHelper: CustomTabActivityHelper =
        CustomTabActivityHelper(this, lifecycle, this)

override fun onClick(view: View) {
        val viewId = view.id
        val uri = Uri.parse(urlEditText.text.toString())
        when (viewId) {
            R.id.button_may_launch_url -> customTabActivityHelper.mayLaunchUrl(uri)
            R.id.start_custom_tab -> {
                val customTabsIntent = CustomTabsIntent.Builder(customTabActivityHelper.session)
                        .build()
                customTabsIntent.launchWithFallback(
                        this, uri, WebviewFallback())
            }
        }//Unkown View Clicked
    }