Luke, I guess you are setting your alarm with one of xxx_WAKEUP constants in AlarmManager. Those wake the device up at appropriate times, as specified in the docs.
Switch to the constants that don't have _WAKEUP (i.e. ELAPSED_REALTIME or ELAPSED_RTC) so the phone is not waken up from sleep mode to deliver the alarms. As for the home app being visible or not, I don't believe you can check for that. However, not waking the device up should already give you a huge improvement in battery consumption. -- Kostya 2011/1/12 Luke <[email protected]> > Hi all, > > I'm developing what amounts to an RSS homescreen widget that > periodically (every few hours) downloads headlines from an RSS feed, > then displays each headline in the widget one at a time, cycling to a > new item every 10 seconds. > > All this functionality is working correctly, however watching some log > statements generated by the widget on the DDMS console, I see that > even when the homescreen of the device is not displayed (either > another application is in the foreground, or the display itself is > asleep), the widget content is still cycling every 10 seconds. This > is obviously a concern for battery life. > > Currently I'm using an AlarmManager to handle the cycling of the > widget content at this 10 second interval, but I have no idea how to > suspend the alarm when the homescreen is not displayed or the device > is asleep. I have scoured the documentation, but cannot find any > obvious event I can listen for or API I can query to find out if the > homescreen is currently displayed or not. > > Google's "News and Weather" widget that comes out of the box with > Froyo has similar functionality to the widget I'm developing, but it > does seem to stop cycling through news items when the homescreen is > not in the foreground or the screen is off. > > Any help on how to achieve this would be greatly appreciated! > > Regards, > > Luke. > > -- > 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]<android-developers%[email protected]> > 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 [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
