how to check internet connectivity in the device in android

Question

Possible Duplicate:
how to check wifi or 3g network is available on android device
Check the Internet Connectivity in Android

I am using an Android device and I am disabling the WiFi connection in my device.Now I have an application which uses Internet and whenever the application runs I want to show a simple message i.e a Toast message telling that "No Internet connection" rather than the crashing of the application.

How to do this?

Answer 1

 public final boolean isInternetOn()
 {

  ConnectivityManager connec = (ConnectivityManager) getSystemService
  (Context.CONNECTIVITY_SERVICE);

  if ((connec.getNetworkInfo(0).getState() == NetworkInfo.State.CONNECTED)
    ||(connec.getNetworkInfo(0).getState() == NetworkInfo.State.CONNECTING)
    ||(connec.getNetworkInfo(1).getState() == NetworkInfo.State.CONNECTING)
    ||(connec.getNetworkInfo(1).getState() == NetworkInfo.State.CONNECTED))

  {

 return true;

  }

  else     
  return false;

 }