I found someone who asked about enable/disable internet connection and someone else who teaches how to build a notification. So i mixed them up and did this:
public void sendNotification() {
WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
if (wifi.isWifiEnabled()) {
} else {
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_notification)
.setContentTitle("TURN ON WIFI!!")
.setContentText("You should turn it back on!");
NotificationManager mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
}
}
But it isn't working =(