I have the solution :) I use the same handler (set as static variable), so i don't lose the reference.
Then I have made myHandler that extends Handler where i have a reference to the active activity, so when i rotate screen active_activity == null in onStop() and when start the onCreate() a update the reference in the Handler active_activity = this it works! :D On 25 Feb, 13:37, skink <[email protected]> wrote: > On Feb 25, 1:03 pm, Paolo <[email protected]> wrote: > > > > > > > Do nothing. > > my background thread has a reference to the (first) handler. when it > > finishes it sends a message on this handler. > > > If I rotate the screen before the thread has sent the message, i think > > that my activity is able to catch the message because I read this from > > the Documentation: > > > "A Handler allows you to send and process Message and Runnable objects > > associated with a thread's MessageQueue. Each Handler instance is > > associated with a single thread and that thread's message queue. When > > you create a new Handler, it is bound to the thread / message queue of > > the thread that is creating it -- from that point on, it will deliver > > messages and runnables to that message queue and execute them as they > > come out of the message queue." > > > is it correct my idea? > > > On 25 Feb, 12:46, skink <[email protected]> wrote: > > > > Paolo wrote: > > > > Hi, > > > > > In my main activity (ListActivity) i start a thread in background to > > > > do some work and always in the activity i use a Handler to receive a > > > > message, containing in the filed obj one vector with many objects, > > > > from the thread when it finishes its work. Obviously i have overridden > > > > the methods handleMessage(Message m). > > > > It seems to work fine if I don't rotate the screen. > > > > > I would like to know what happen to the handler if i rotate the screen > > > > (like in the G1 using keybord). I know the the activity is destroyed > > > > with onDestroy and created again with onCreate(). and my handler? what > > > > happen to my handler? > > > > handler is just handler (new one is created), the real question is > > > what you do with your thread if you rotate the screen > > > > pskink > > if you do nothing with your thread i think that you should use in that > thread new handler, old one is associated with old activity > > pskink -- 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
