Running Android App in background or as a constant notification

Question

I'm learning how to make apps for android and I have started by creating one which makes my phone scream when its dropped.

I got it working to where the phone screams when dropped, but now I need to make it so that the phone screams when dropped even when the app is closed, and to show a notification in the notification bar saying that its running

What should I use to do this? Should I use intentService? Ive been looking all over and I'm not sure where to look. Any guides would be appreciated

Answer 1

You need to make your service run in the foreground. You can achieve this by showing a notification when your service is running.

This is how you need to make your service run as foreground

private void showNotification(String title)
{
    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(this)
                    .setSmallIcon(R.drawable.ic_launcher)
                    .setContentTitle(title);

    startForeground(1000,mBuilder.build());  // 1000 - is Id for the notification
}

You can also set your custom RemoteViews in notification using setContent

You can remove the service from foreground state using stopForeground

Answer 2

check Service Training .

For your use case it's important that it's an foreground service: Documentation Service