The Activity class will call finish() on itself if you do not explicitly handle KEYCODE_BACK in your Activity's onKeyDown() function. In general the system maintains a stack of activities for you, pushing a new one when you call startActivity() and poping one when the user hits back or you call finish() on an activity.
You can create a single activity that manages its own internal stack of states, but it's much easier to create a new subclass of Activity for each state you want and let the system handle that for you. -Jeff On Fri, Sep 12, 2008 at 10:16 PM, dai <[EMAIL PROTECTED]> wrote: > > ciao, does someone know what/how android implements the back button? > If I add back button myself, Do I have to do something(use stack to > remember activity) myself? > > Thank you so much > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
