Re: [android-developers] Poll Screen On/Off state
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 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
[android-developers] Poll Screen On/Off state
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. The second part has me stumped. On Windows Mobile I was able to poll the power state to determine user idleness. On BlackBerry I was able to poll the device idle time. However, there does not appear to be a way to determine user idleness on Android. Instead of polling for user idleness directly, I thought I might be able to use the on/off state of the screen. There are 2 intents ACTION_SCREEN_OFF and ACTION_SCREEN_ON and I was able to setup a listener for these (BroadcastReceiver). The problem is that I do not know how to determine the current state of the screen at the time I register the listener, therefore I have to wait until the next screen on/off change to know anything. The docs speak of some intents that are sticky and thus will allow the current state to be determined, but the screen events do not appear to have that property. What am I 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? -- 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
