Hi, Look at android<http://www.google.com/codesearch#cZwlSNS7aEw/&exact_package=android&q=NetlinkListener&type=cs&l=34> /system<http://www.google.com/codesearch#cZwlSNS7aEw/system/&exact_package=android&q=NetlinkListener&type=cs&l=34> /core<http://www.google.com/codesearch#cZwlSNS7aEw/system/core/&exact_package=android&q=NetlinkListener&type=cs&l=34> /libsysutils<http://www.google.com/codesearch#cZwlSNS7aEw/system/core/libsysutils/&exact_package=android&q=NetlinkListener&type=cs&l=34> /src<http://www.google.com/codesearch#cZwlSNS7aEw/system/core/libsysutils/src/&exact_package=android&q=NetlinkListener&type=cs&l=34> /NetlinkEvent.cpp
This has a function namely "decode" .. I guess this does exactly what you want :) For your Java Part, What exactly you want to do in Java ? The Parsing or receiving of the UEvent ? Or the Complete thing you mentioned before ? Thanks, Durga On Mon, Jul 18, 2011 at 7:39 PM, Hemant <[email protected]> wrote: > Hi, > > Thanks for your reply. > Well I want to write in C because I know only that.. > I wrote a small program based on netlink to receive uevent and it > works fine. But now I am a bit confused because I am getting all > events and not the only one. > How can I parse an uevent message? Is there any data structure for it? > > If I want to do it in Java, then can you give me an example of it? > > Thanks/ > Hvr > > On Jul 18, 4:57 pm, Durgadoss Ramanathan <[email protected]> > wrote: > > Hi, > > > > Android has a UEvent Listener in the Application Framework. > > This receives the UEvent from the Kernel. > > > > For BatteryStatus: > > You may want to look at > > frameworks/base/services/java/com/android/server/BatteryService.java > > Similarly, also at BatteryServer.cpp(corresponding JNI..) > > > > Basically the battery service gets info from the JNI and packs them into > an > > intent > > and broadcasts it. Intent : Action_Battery_Changed > > You can register to listen this intent and extract every little detail > from > > this :) > > > > BTW, Nothing stops you from writing a C program that can catch > > the UEvents. You have to write a Netlink Socket receiver..in order to do > > that. > > > > Just Curious, Why you want to do that in C ? > > > > [If you are Ok to that in Java, then its very simple & easy..] > > > > > > > > > > > > On Mon, Jul 18, 2011 at 4:45 PM, Hemant <[email protected]> > wrote: > > > I want to handle uevent in user-space mainly for battery status > > > changed in my application. > > > Can this be done using C program? > > > Can this be done by calling a select() on one of the sysfs which > > > indicates change in battery voltage? > > > How Android polls uevents from kernel? > > > > > Br/ > > > Hvr > > > > > -- > > > 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 > > > > -- > > Regards > > Durgadoss- Hide quoted text - > > > > - Show quoted text - > > -- > 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 > -- Regards Durgadoss -- 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
