more importantly: if one pushes the power button, while an app is running, this app will loose focus, but however it will still keep running. shouldn't we also stop rendering in that case, in order to not drain the battery that much?
so my question: shouldn't we already stop rendering when we lose focus?
also the app will go into background when there are calls incoming. wouldn't we still be playing back any kinds of sounds still? I only got an ipad so I don't care that much and I have no means of testing, but I was just wondering.