How to determine through the application whether there is an Internet or not?

Question

Android

How to determine whether the user is connected to the Internet through the application or not? It is necessary to determine this moment right at the very opening of the application.

Answer 1

public boolean isOnline() {
        ConnectivityManager cm =
                (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo netInfo = cm.getActiveNetworkInfo();
        return netInfo != null && netInfo.isConnectedOrConnecting();
    }

Answer 2

Ping google. Pinging - yes, not pinging - no

Answer 3

Windows, for example, makes a request to www.msftncsi.com/ncsi.txt and if 200 Ok - the network is available.