title: Get Notification about new/changed/deleted contacts in Android when App is not running
body: <p>it there a way to get noticed if a new or changed contact is made in Android? I want to get notified when the app starts, if there are any changes. Using a ContentObserver seems to me, that the app must run it in a activity. Or do i have to load all contacts every time from my DB and i am only able to recognize contact changed while my app runs and has an implemented ContentObserver?</p>