title: ios- appropriate way to do background process
body: <p>I've gotten lost. I'm a new IOS developer coming from Android and I'm in desperate need of some clarification. I have an app which does some checks, namely, it makes a UIWebView, loads a webpage, downloads the source and extracts some numbers I need from it. Now what I want to do is, the app has to do this in the background and notify the user when there is a change in numbers. Now in Android I just used a <code>BroadcastReceiver</code>, doing the check, and sending a notification whenever there was a change. I've read about <code>UILocalNotification</code> but I'm not sure how to achieve the same on IOS as I have on Android. I have to fire some code first, to then determine whether to fire a Notification. Any suggestions?</p>