You can't poll screen on/off state. The best you can do is to register a BroadcastReceiver, and wait for an Intent to come along. Until that first Intent is received, you'll have no idea what the screen state is.
On Nov 3, 6:28 pm, Mark Murphy <[email protected]> wrote: > gudujarlson wrote: > > I have an app that runs in the background indefinitely provided there > > is work to be done. I want the app to go to sleep if there is no work > > to be done and the user is idle. > > What does the user being idle have to do with anything here? If there is > no work to be done, there is no work to be done, so stop your service > and wake it up after some time to see if there is new work to be done. > > > What am I to do? > > Don't worry about "user idleness". Just stop your service and get it out > of RAM when you have no work to do. Restart the service after a period > of time, or based on some other event trigger, to see if there is new > work to do. > > > In general, I find the lack of support for polling system state > > properties (e.g. screen state, power state, signal strength) in > > Android to be annoying. It's cool that one can listen for changes in > > system state rather than constantly polling for them, but one still > > needs to know the current state of the property at the time the > > listener is registered. Am I missing something fundamental? > > Power is available on demand via a sticky Intent. > > WiFi signal strength is available on demand via WifiManager. > > GSM/CDMA signal strength is available on demand from TelephonyManager. > > -- > Mark Murphy (a Commons > Guy)http://commonsware.com|http://twitter.com/commonsguy > > Android Training in Germany, 18-22 January 2010:http://bignerdranch.com -- 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
