There is an Application.onCreate() and an Application.onDestroy() you can use. These are not guaranteed to be called when your app isn't visible, in fact destroy isn't guaranteed to be called at all, but that's OK for your use case.
Apparently, the way Maps is doing it is they set a weak ref in onCreate () then check it in onPause/onDestroy. The idea, I suppose, is that the activity transition goes: startActivity onCreate of new activity onPause of existing activity onResume of new activity So if onCreate sets a static ref to itself, then onPause can check if it points at "this" to know if the next activity is another instance of the same thing. You could do the same trick with something stashed in your application object. It has to be a WeakRef because otherwise this will leak the foreground activity (a weak ref is just like a pointer, but it doesn't stop the target being garbage collected. so it can spontaneously become null). --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
