Android Studio - WebView

check_connection2.kt

private fun isConnected(context: Context): Boolean
    {
        val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            ////per versioni Android uguali o superiori ad Android M (Android 6.0 - API 23)
            val nw      = connectivityManager.activeNetwork ?: return false
            val actNw = connectivityManager.getNetworkCapabilities(nw) ?: return false
            return when {
                actNw.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> true
                actNw.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> true
                //per altri dispositivi che sono in grado di connettersi con Ethernet
                actNw.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) -> true
                //per controllare la connessione Internet tramite Bluetooth
                actNw.hasTransport(NetworkCapabilities.TRANSPORT_BLUETOOTH) -> true
                else -> false
            }
        }
        else    //per versioni Android inferiori ad Android M (Android 6.0 - API 23)
        {
            return connectivityManager.activeNetworkInfo?.isConnected ?: false
        }
    }