Thanks a lot also
On Nov 30, 5:28 pm, "Xiaoliang Ding" <[EMAIL PROTECTED]> wrote:
> Thanks Dianne. Your approaches are very helpful. We will try them both.
>
> Thanks
> Ding
>
> 2008/11/30 Dianne Hackborn <[EMAIL PROTECTED]>
>
> > A good way to do this is publish it as a service in another .apk, which you
> > can query the package manager for and bind to. This isn't really a true
> > plug-in though (a service is a global singleton in the system, and you'll
> > nee to define a .aidl interface to it so it can run in another process).
>
> > Another approach is to put your plug-in into another .apk, publish it in
> > the manifest however you want, find the .apk with the Package Manager, and
> > then use Context.createApplicationContext() with the flag to load the code.
> > From there you can get the ClassLoader for the other .apk and instantiate
> > classes.
>
> > If you do the latter though you really need to be aware of what you are
> > doing: this has all kinds of security implications for you, can have
> > problems if code ends up running as different uids, etc. This is best for
> > the situation where you provide all of the plug-ins, so you can sign them
> > with the same certificate and use a shared user ID for all of them as well
> > as the main application.
>
> > On Fri, Nov 28, 2008 at 2:39 AM, Xiaoliang Ding <[EMAIL PROTECTED]>wrote:
>
> >> Hi, Ludwing, Louis
>
> >> But how about a new added application. If we want to a new
> >> plug-in added into the main application, how can do it ?
>
> >> Thanks
> >> Ding
>
> >> 2008/11/28, Louis <[EMAIL PROTECTED]>:
>
> >>> Thanks Ludwig. And by the way, could we download a Jar file and put it
> >>> into the basic application, then the basic application can call it
> >>> through some interfaces?
>
> >>> On Nov 27, 8:28 pm, Ludwig <[EMAIL PROTECTED]> wrote:
> >>> > Think about Intents and split your application into multiple
> >>> applications
> >>> > (perhaps running under the same userid), each serving a bunch of
> >>> intents.
> >>> > Then you can upgrade each application (which might just respond to one
> >>> > intent) separately and Android will at run-time find the best-matching
> >>> > intent (or give the user the choice which one to use if there are
> >>> multiple
> >>> > good matches).
>
> >>> > Ludwig
>
> >>> > 2008/11/26 Louis <[EMAIL PROTECTED]>
>
> >>> > > Hi, All:
>
> >>> > > Our products which running in other platform are using the modular
> >>> > > approach, which means if user want to add a new feature, he/she only
> >>> > > need to download a new plug-in, but not reinstall the who
> >>> application.
> >>> > > And we used COM library base ideas to do that before, is there anyway
> >>> > > to do it in Android?
>
> >>> > > Welcome any help for it.
>
> >>> > > Best regards,
> >>> > > Louis.
>
> > --
> > 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.
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