Detect broken internet connection whenever the application is running

Question

I'm already using the code below to detect if the user is connected to the internet at the application's splash screen, but I need to detect this whenever the user is in a specific activity. Imagine you are using turn-by-turn navigation and you depend on internet connection, so you must detect a broken internet connection when it happens.

How can I do this without slowing down the app with an infinite loop?

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

        NetworkInfo networkInfo = cm.getActiveNetworkInfo();

        return (networkInfo != null && networkInfo.isConnected());
    } catch (Exception exc) {
        return false;
    }
}

possible duplicate of [How to check internet access on Android? InetAddress never timeouts](http://stackoverflow.com/questions/1560788/how-to-check-internet-access-on-android-inetaddress-never-timeouts) — Peter O., Jan 20 '13 at 13:00
I will add the missing code when I get home. Sorry about it. — juliano.net, Jan 20 '13 at 15:02
@Juliano Nunes Silva Oliveira have you tried with the posted solution? — Pratik Sharma, Jan 22 '13 at 17:09
@PratikSharma not yet, but I'm gonna try it tommorrow and mark which one is the answer. — juliano.net, Jan 22 '13 at 17:31

score 0 · Answer 1 · answered Jan 20 '13 at 12:56

I belive you shoul write your own service with PhoneStateListener, you should implement this method public void onDataConnectionStateChanged(int state) {} And from this service you can check in any time if there is DataConection.

Here is an article about Android PhoneStateListener Illustration–with Auto Logging Calls to Google Calendar Example