'Often'? But when, exactly? Is there some document somewhere that tells us when the system acquires and releases wake locks? Is there some way we can tell when other apps acquire and release them?
This whole thread has been an excellent illustration of why this information is valuable for Android developers. On Aug 20, 1:19 pm, Dianne Hackborn <[email protected]> wrote: > On Wed, Aug 18, 2010 at 12:23 AM, mot12 <[email protected]> wrote: > > That would be the case if the alarm service broadcasts the intent and > > no wake lock is acquired. > > The platform does hold a wake lock while broadcasting an alarm, and always > has. > > > I was talking about a different situation in which the broadcast of > > the alarm intent doesn't happen at the designated time because the > > device is in some funky state. The broadcast happens later, when the > > user manually turns the display on. (After that, the receiving app > > should, of course, acquire a wake lock to process the alarm action but > > that is not a problem if properly coded). The problem is that the > > broadcast of the alarm intent does not happen at the time for which > > the alarm was set (otherwise I would see it in the logs, correct?). > > And that is a major problem for alarm clocks. > > This is exactly what you will see if someone is not holding a wake lock when > they should. The CPU goes to sleep, and won't run again until something > else wakes it up and holds a wake lock. Turning on the screen on does this. > > > All users have reported that the problem goes away if the phone > > remains plugged in. > > Often having a device plugged in will cause a wake lock to be held for the > duration. Definitely, having the screen on (such as when the clock is > displayed while in a desk dock) will keep a wake lock held. > > -- > Dianne Hackborn > Android framework engineer > [email protected] > > 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 [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
