Hi, I did a simple test where I start a service from an activity after acquiring PARTIAL_WAKE_LOCK. Then a 100% charged phone will drain completely in 10 hours when CPU is always on.
Regards, Manoj On Jan 24, 3:13 am, Dianne Hackborn <hack...@android.com> wrote: > The alarm manager would probably be overkill for that. It might make more > sense to do this in a Service, which holds a partial wake lock to keep > itself running. Note that this will have a noticeably impact on battery > life because you are preventing the CPU from going to sleep, though I can't > tell you exactly how much. > > > > > > On Fri, Jan 23, 2009 at 2:01 PM, John Bohumil <jbohu...@gmail.com> wrote: > > Finally, for something like a countdown timer, you really might want to > >> consider using the alarm manager so you don't need to keep your app running > >> at all while it is in the background. That is the kind of thing a well > >> behaving Android app will do. To be able to show the remaining time if the > >> user returns to your activity, you can store on SharedPreferences the time > >> the countdown was started. > > >> Using the alarm manager is also the only way you can make sure you execute > >> when the time expires, even if the user has turned off the phone. > > > As it happens I am writting a countdown timer that implements a repeating > > notification at quite short interface. For example the application might > > chirp every 10 seconds. This is used for certain breathing excercises where > > you hold the breath for 10 seconds, breathe out for 10 seconds, in for 10 > > seconds etc. > > > For such short intervals would I still be better off using the alarm > > manager? The handler technique seems to work great for my purposes but I > > want to make sure I write a well behaved app. > > > John > > -- > Dianne Hackborn > Android framework engineer > hack...@android.com > > Note: please don't send private questions to me, as I don't have time to > provide private support. All such questions should be posted on public > forums, where I and others can see and answer them.- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
