Network Availability check in Android

public static boolean isNetworkAvailable(Context act) {
        ConnectivityManager connectivityManager
              = (ConnectivityManager) act.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
        return activeNetworkInfo != null;
    }

if(isNetworkAvailable(MainActivity.this)
{
//connection avilable
}
else{
//no connection

}