UIAlertView Display while iPhone is asleep and locked

I am writing an app the is pretty much always going to be open (hardly ever would run in background) and I want to be able to alert the user with a 开发者_StackOverflowsound, vibrating the phone, and showing an alert message when there is a state change. The problem I am having is that when I use the UIAlertView, the AlertView seems to be hit or miss whether it plays the sound and/or vibrates. For example, sometimes it only alerts the user after the phone is unlocked. Is there a way that I can make the UIAlertView more aggressive?

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In iOS 4, Push Notifications are no longer the only option.

You'll want to look into the UILocalNotification class. It provides similar functionality without having to setup/maintain a push notification server.

More information here: Local Notification Programming Guide.