I noticed that the Android Developers Activity section has been updated since I started my app, but I am still unclear what the simplest Activity Lifecycle is.
As fa
onCreate() obviously first. Your activity can then enter onPause(). From there it could either onResume() or onDestroy(). That's the simplest path through the lifecycle that I know of.
I had an activity that didn't have an onPause() method. Through an odd series of events I noticed in DDMS that my app wasn't visible, but it was still requesting freshAds from AdMob :) Nice battery sucker. That's since been resolved but reminded me how important the simple things are.