Pull Notification in Android
<p>I want to implement notification in my android app. 
The case is, I want to show the notifications when my app is closed and turn off when app is opened. So basically I want to show the notifications when the app is closed.</p>

<p>So what should I use in this situation? Should I use Service + AlarmManager?</p>

<p>Can anyone give me some example or reference?</p>

<p>Thanks</p>
