Thanks TreKing - I get it, the Alarm Receiver is kind of a redundant step if all it does is start the Service. But it's not 'wrong' as such.
To the other point, is there actually a way to lauch an app without a main activity? I had read it wasn't possible, and when I tried to do so from AndroidStudio I just got errors, and didn't look at it any further. Is there an example anywhere that you know of? On Monday, 6 June 2016 06:53:28 UTC+1, TreKing wrote: > > > On Sat, Jun 4, 2016 at 5:50 AM, Neilz <[email protected] <javascript:>> > wrote: > >> Hi. I need a background task to run every minute. >> > > > https://developers.google.com/android/reference/com/google/android/gms/gcm/GcmNetworkManager > > >> I have no need for a user interface, although I understand that I must >> still declare a launcher activity >> > > No, you don't. > > >> I'm confused between the use of AlarmManager, Receivers and Services. So >> far, I've scheduled a repeating alarm, which passes a class called >> AlarmReceiver in its Intent. AlarmReceiver extends BroadcastReceiver, and >> the onReceive() method successfully fires every minute, even if I kill the >> activity, which is exactly what I want. >> >> However, at no point am I using a class which extends Service or >> IntentService, which when I look around at other people's examples, seems >> to be what everyone does when they want a task to run as a background >> service. Am I doing something wrong? Should I be calling a Service class >> from my BroadcastReceiver instead of doing the work there? >> > > Probably. You don't really need a receiver in this case. The point of a > receiver is to get notified of specific events happening either in you app > or throughout the system. If all you're interested in is doing some work > every 1 minute, then you don't need the receiver. The alarm manager's > intent that is fired when the alarm goes off can just be an intent to > launch an a(n) (Intent)Service that does that work. > > > ------------------------------------------------------------------------------------------------- > TreKing <http://sites.google.com/site/rezmobileapps/treking> - Chicago > transit tracking app for Android-powered devices > -- 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]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/5b46c17e-b996-493f-968a-f97017068f31%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
