See inline.., what I tell u is only something works but may not be the "good" way
On Apr 20, 2009, at 12:07 PM, Archer <archerstark...@gmail.com> wrote: > > Greetings, Dianne, Yi and others, > > I have a need to do something similar, that is to access a backend > native service from the application. > > Going through the messages here, there are several things that are > unclear to me. I'd really appreciate if you can provide more > information on them. > > (1) On the native service side (C/C++), I can create a native binder > service class. I can also implement a native executable to instantiate > the binder service and add the service to the service manager. Then > what is the right way to start the native service? (Run the native > executable in some start up scripts?) > [yi] I hook it up from init.rc > (2) On the application side (Java), Dianne, you mentioned "make a > shared library that apps request with <uses-library>", exactly what is > this shared library? Is it the native shared library containing the > interface implementation of the service? > [yi] take a look at developer/samples/platform you will get it > Archer > > On Apr 1, 10:46 am, Dianne Hackborn <hack...@android.com> wrote: >> On Wed, Apr 1, 2009 at 5:39 AM, iblues <iblues....@gmail.com> wrote: >>> With respect to performance, which approach is more better? Because >>> all the other modules in Android such as Camera or Media Recorder >>> module all use native binding and JNI layer for java access. >> >> It just depends how you want to structure things. Eventually you >> are going >> to hit the IPC barrier; the most important thing is probably to >> keep that as >> efficient as possible (in particular reducing the number of IPCs >> that occur >> as much as possible). >> >> -- >> Dianne Hackborn >> Android framework engineer >> hack...@android.com >> >> 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-framework" group. To post to this group, send email to android-framework@googlegroups.com To unsubscribe from this group, send email to android-framework+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-framework?hl=en -~----------~----~----~----~------~----~------~--~---
