Thank you all for the discussion which saves my investigation. I was using the Handler.postDelayed() with something like a AlarmRunner to make a count down. Then I get the same problem that, handler paused when my phone standby. I'll switch to AlarmManager instead according to your suggestions.
Btw, seems it's really important for Android developers to get a real phone for testing. Emulator is just emulator... On Nov 29, 1:31 am, Kostya Vasilyev <kmans...@gmail.com> wrote: > Paul, > > You don't need a Service or a Handler to handle events from Alarm > Manager - just a Broadcast Receiver. It's even better, in that Android > guarantees to hold a wake lock for the duration of your receiver's > onReceive. > > -- Kostya > > 28.11.2010 18:59, Paul Townsend ?????: > > > > > > > Hi guys thx for your help, been playing around with it and I tried > > setting up a service which works, but this will run in the background > > all the time so if I use an alarm manager how accurate is it can you > > set one for say 30 seconds time, or is it still bad to use a service > > even though all its doing is waiting for handler.post() to come along > > to play a sound. The timer is designed to have several times per timer > > so each timer will finish several times, i.e pyramid splits, and can > > have many timers > > > On 21 November 2010 23:30, Dianne Hackborn <hack...@android.com > > <mailto:hack...@android.com>> wrote: > > > You don't need to try around with different things, the behavior > > is very well defined: if you are not holding a wake lock, the CPU > > is allowed to go to full sleep, so no code can be executed until > > an external event wakes it up. A thread sitting there waiting on > > a timer is never an external event. > > > If you need to make sure you wake up even if the CPU is asleep, > > use the AlarmManager. > > > On Sun, Nov 21, 2010 at 8:21 AM, Paul Townsend <deer...@gmail.com > > <mailto:deer...@gmail.com>> wrote: > > > Just tried that bvut dose the same thing, although I have used > > countdownTimer in a custom TextView that I wrote so I could > > have a countdown timer for the UI and this dose not pause. I > > might look into to transfering the other timer bits to the > > text view and use that as a all in one timer solution and see > > if that works. > > > On 21 November 2010 03:34, Hal <dsheppar...@gmail.com > > <mailto:dsheppar...@gmail.com>> wrote: > > > You may want to look at CountDownTime also. It seems to > > work fine > > (even when the Screen goes off). > > I took the following from the web: > > > public class MyCount extends CountDownTimer { > > public MyCount(long millisInFuture, long > > countDownInterval) { > > super(millisInFuture, countDownInterval); > > } > > > public void onFinish() { > > counter = new MyCount(5000, 1000); > > counter.start (); > > } > > > public void onTick(long millisUntilFinished) { > > tv.setText("Hal:" + timer.getTime()); > > } > > } > > > The timer component uses a "Live" Jt component (separate > > thread): > > > private void timer() { > > > JtFactory main = new JtFactory (); > > > // Create the component > > > timer = (Timer) main.createObject (Timer.JtCLASS_NAME); > > > // Asynchronous processing of messages. > > main.setSynchronous(false); > > main.sendMessage (timer, new JtMessage > > (Timer.UPDATE_TIME)); > > > } > > > ..... > > counter = new MyCount(5000, 1000); > > counter.start(); > > setContentView(tv); > > ....... > > > On Nov 20, 3:58 pm, Paul Townsend <deer...@gmail.com > > <mailto:deer...@gmail.com>> wrote: > > > I made a simple countdown timer and it works as expected > > when plugged > > > in via usb for debugging but when I take it off > > debugging and the > > > screen goes off either time out or power button the > > handler fails to > > > fire at the end time. I have created a custom timer > > class that gets > > > created from the main activity when needed, because its > > able to have > > > multiple countdowns running at the same time. Am I right > > in thinking > > > that the handler just gets paused when the screen goes > > off and if so > > > what are my alternatives. The activity is still in the > > foreground and > > > I assumed the handler would still fire if the screen > > goes off. > > > -- > > You received this message because you are subscribed to > > the Google > > Groups "Android Developers" group. > > To post to this group, send email to > > android-developers@googlegroups.com > > <mailto:android-developers@googlegroups.com> > > To unsubscribe from this group, send email to > > android-developers+unsubscr...@googlegroups.com > > <mailto:android-developers%2bunsubscr...@googlegroups.com> > > For more options, visit this group at > > http://groups.google.com/group/android-developers?hl=en > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to > > android-developers@googlegroups.com > > <mailto:android-developers@googlegroups.com> > > To unsubscribe from this group, send email to > > android-developers+unsubscr...@googlegroups.com > > <mailto:android-developers%2bunsubscr...@googlegroups.com> > > For more options, visit this group at > > http://groups.google.com/group/android-developers?hl=en > > > -- > > Dianne Hackborn > > Android framework engineer > > hack...@android.com <mailto:hack...@android.com> > > > Note: please don't send private questions to me, as I don't have > > time to provide private support, and so won't reply to such > > e-mails. All such questions should be posted on public forums, > > where I and others can see and answer them. > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to > > android-developers@googlegroups.com > > <mailto:android-developers@googlegroups.com> > > To unsubscribe from this group, send email to > > android-developers+unsubscr...@googlegroups.com > > <mailto:android-developers%2bunsubscr...@googlegroups.com> > > For more options, visit this group at > > http://groups.google.com/group/android-developers?hl=en > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Developers" group. > > To post to this group, send email to android-developers@googlegroups.com > > To unsubscribe from this group, send email to > > android-developers+unsubscr...@googlegroups.com > > For more options, visit this group at > >http://groups.google.com/group/android-developers?hl=en > > -- > Kostya Vasilyev -- WiFi Manager + pretty widget > --http://kmansoft.wordpress.com -- You received this message because you are subscribed to the Google Groups "Android Developers" group. 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