Check internet across multiple OS version

Internet Checker

fun Context?.isOnline(failBlock : () -> Unit  = { globalIntenetFailBock() }, successBlock : () -> Unit ) {
    this?.apply {
            ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
            val b : Boolean = false
            if (cm == null) b = false

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                NetworkCapabilities cap = cm.getNetworkCapabilities(cm.getActiveNetwork())
                if (cap == null) b = false
                b = cap.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
            } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                Network[] networks = cm.getAllNetworks()
                for (Network n: networks) {
                    NetworkInfo nInfo = cm.getNetworkInfo(n)
                    if (nInfo != null && nInfo.isConnected()) b = true
                }
            } else {
                NetworkInfo[] networks = cm.getAllNetworkInfo();
                for (NetworkInfo nInfo: networks) {
                    if (nInfo != null && nInfo.isConnected()) b = true
                }
            }

            b = false

            if (b){
                successBlock()
            }else{
                failBlock()
            }
    }?:failBlock()
}

fun Context?.globalIntenetFailBock(){
    // no internet code here
}


use it like,
isOnline{
    //yay internet... hurray...
},{
    //no internet sorry!!!
}