Does the iOS SDK support system services' event handling? I mean, could I have my app listening for external events such as sms reception, battery level of charge...
I was looking for documentation at iOS developers' site, and it looks like the only types of events I can handle are user events when interacting with the UI, events triggered by UI controls, Cocoa events, accelerometer and GPS events: Event Handling Guide for iOS
Are those actually all the events that can be listened in an app, or am I missing some other documentation about system events as the ones I mentioned?
Thanks