how to check internet connection in android programmatically

We will use ConnectionDetector class for find the internet connection.

ConnectionDetector cd;

AlertDialogManager alert = new AlertDialogManager();

// Use AsyncTask execute Method To Prevent ANR Problem

if (!cd.isConnectingToInternet())

{

// Internet Connection is not present

alert.showAlertDialog(MainActivity.this,

"Internet Connection Error",

"Please connect to working Internet connection",false);

// stop executing code by return

//finish();

return;

}