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. > > > > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
