Well, the app reliably works while other activities are running and when the phone is locked. I will have it on Google Play next week and you can try it for yourselves (for a couple bucks). It's called SignalBeacon. You send the phone a text and you get back the phones location. It doesn't have to be running. In fact it never has to run. It just has to be installed on the phone. Gary
On Thursday, February 28, 2013 8:53:21 AM UTC-7, [email protected] wrote: > I have an app with a main activity that has no visible interface > (android:theme="@android:style/Theme.NoDisplay). The app is started by > receipt of an SMS message in a BroadCast activity which kicks off another > activity (also no GUI) that does work and then sends an SMS message. It > works very well; actually better than I had expected because it runs even > if other apps are running a foreground activity. > > Now I'm familiar with the Android Activity Lifecycle but I guess this > means that Android (I'm using 2.33) can run "many" activities "at once." > Even when I'm running a very active GPS tracking application that is > writing layers on a mapview, my "no-display" app starts does his work and > sends the results out on an SMS message. The tracking app that was running > never even blinked. > > I don't have any problem (at least not programming related), I'm just > curious why this works. > Regards, > Gary > > > -- -- 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 --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.

