I did that and the service starts (I can see the log message from onCreate() method) but i want to know how to let the service know that activity updated data from that point onwards ? Isn't there any other way other than AIDL ?
On Tue, Jan 13, 2009 at 12:25 PM, Dianne Hackborn <[email protected]> wrote: > Call startService() like the API demo does. There is a sample showing > exactly this kind of thing. > > On Tue, Jan 13, 2009 at 12:03 PM, Sarath Kamisetty > <[email protected]> wrote: >> >> Hi, >> >> I looked at the other thread where running service in a separate >> process by itself is discouraged and considered rare. In my case, my >> activity and the service both use SQLite so I don't expect to see >> synchronization issues. So, how do I bring my service to life from the >> activity, let it process new information, and put itself to sleep >> until a specific time (which could change every time) or by another >> notification by the activity ? Can I use broadcast intent/receiver >> here ? With the intents, invoking service seems to be easy. All my >> activity needs to tell the service is that some information is updated >> (service knows where to look for this information). If the service is >> not running, it should be started, if it is scheduled to run in future >> (through AlarmManager) that should be canceled and rescheduled using >> new timer value calculated after processing the information. >> >> I am thinking of the following: >> >> activity activates services by doing the following: >> >> Intent intent = new Intent(this, myservice.class); >> this.sendBroadcast(intent); >> >> In the service, I create a task that runs a thread at some point in >> future. When the service is notified of this intent, I will check if a >> thread is scheduled to run and if so, I want to cancel the scheduled >> task. Then I will process new information and then re-schedule a new >> task, if needed. Does this sound like a good approach ? With this I >> don't seem to require any aidl. >> >> Thanks, >> Sarath >> >> On Mon, Jan 12, 2009 at 3:59 PM, Dianne Hackborn <[email protected]> >> wrote: >> > Yes, all of the components of your app share data in the same place of >> > the >> > filesystem, regardless of the process they run in, so any changes you >> > make >> > there will be seen by all of them. Of course you have to be careful if >> > you >> > have multiple processes modifying the same file that they don't step on >> > each >> > other. SQLite takes cares of this for you. >> > >> > See, however, my previous e-mail; from your description this doesn't >> > sound >> > like a case where having a service in a separate process is necessarily >> > a >> > good idea. >> > >> > And yes, using bindService() (with the appropriate flag passed in) will >> > have >> > the service running as long as that client is bound to it. >> > >> > On Mon, Jan 12, 2009 at 12:49 PM, Sarath Kamisetty >> > <[email protected]> wrote: >> >> >> >> Hi, >> >> >> >> I am a little bit confused about what can/cannot a service access when >> >> it is running as an independent process (remote service). I have a >> >> database created by my activity when it is run the 1st time. Later on >> >> this activity adds entries to this database. I don't want my service >> >> running all the time, instead the service uses AlarmManager to >> >> schedule itself to run (sometimes it doesn't know when to run, so has >> >> to suspend itself forever until notified by the activity). For >> >> activity to service communication aidl will be used, but I was >> >> wondering if the service, if run as independent process, can access >> >> the database created and updated by the activity ? Can an application >> >> have multiple processes ? If so, I guess as long as the service and >> >> activity belong to same application I think the answer is yes, but can >> >> someone please confirm ? or is there a need in this case to have >> >> activity and service in completely different applicaitons accessing >> >> shared database (don't know if this is possible) ? >> >> >> >> The other help I am looking for is, in this case how should my >> >> activity be invoking the service ? If I use bindService() will that >> >> make service run when the activity is running (something I don't >> >> need/want to happen) ? or do I need to use some intent and let the >> >> system notify my service ? Can anyone suggest how to design this ? >> >> >> >> Thanks, >> >> Sarath >> >> >> >> >> > >> > >> > >> > -- >> > Dianne Hackborn >> > Android framework engineer >> > [email protected] >> > >> > Note: please don't send private questions to me, as I don't have time to >> > provide private support. All such questions should be posted on public >> > forums, where I and others can see and answer them. >> > >> > >> > > >> > >> >> > > > > -- > Dianne Hackborn > Android framework engineer > [email protected] > > Note: please don't send private questions to me, as I don't have time to > provide private support. All such questions should be posted on public > forums, where I and others can see and answer them. > > > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
