Both Stack Overflow posts your refer to assume that both Activities try to control the display. But the whole point of his post was that he has one that does not use the display at all. So these do not apply.
That said, I am a little surprised it works, too. After all, though there is no requirement that an Activity do display, that is usually the case, so it is the best tested case. I doubt the case the OP is doing is heavily tested at Google, but he seems to have lucked out; perhaps because it is less demanding to get it working and keep it working. On Thursday, February 28, 2013 11:58:49 PM UTC-8, Tamilarasi Sivaraj wrote: > > This is not possible. > You cannot have multiple activities running at the same time. > And you refer this > > http://stackoverflow.com/questions/6692552/running-two-activities-at-the-same-time-on-the-screen > > http://stackoverflow.com/questions/11102337/can-you-have-two-activities-running-at-the-same-time > > Regards > Android developer > Trinay Technology Solutions > www.trinaytech.com > 5705750475 > > On Thursday, February 28, 2013 9:23:21 PM UTC+5:30, > ga...@deanblakely.comwrote: >> >> 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 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 --- 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 android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
