title: how to set a notification even if app is not running or closed
body: <p>how to set a notification even if the app is not running or closed. I am writing a code in which I am checking for the new data updated in RESTful web services. and if new data is updated it will notify the app user that there is the new item. just like a mail arrived and the user gets notified. I am new to this please suggest. </p>