Network detection when on the London Underground

Question

What is the best way to detect if a user has network service when a user has entered the London Underground?

I've tried the following;

ConnectivityManager conMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
if(conMgr.getNetworkInfo(0).isAvailable() || conMgr.getNetworkInfo(1).isAvailable())
{
    // Application online
}

I've also tried getting the network level, but this seems to return the last level before the tube has entered the underground.

Any suggestions gratefully appreciated.

Can this question be simplified to "how do I detect when the user has lost coverage?" — Oliver Charlesworth, Feb 21 '11 at 20:44

score 1 · Accepted Answer · edited May 23 '17 at 10:33

I'm using this code:

public boolean isOnline(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

        NetworkInfo netInfo = cm.getActiveNetworkInfo();
        if (netInfo != null && netInfo.isConnectedOrConnecting()) {
            return true;
        }

        return false;
    }

from thread How to check internet access on Android? InetAddress never times out

Network detection when on the London Underground

1 Answers1