On Tue, 2009-05-26 at 00:29 -0700, zhangxiyuan wrote: > Hi Dianne, > Thanks a lot for your help. > > According to the reply from Yi Sun: > >>>>Look into the update() method in BatteryService.java. You may be able to > >>>>solve the issue by register for BATTERY_CHANGED. But, it only be sent > >>>>out when the battery status is changed. Not sure if it is good for you > >>>>or not. > I checked the source code of com.android.server.BatteryService#update > (), yes, the update method first call native_update(), > then check for the status, if some status field changed, then > sendIntent() will be invoked to broadcast. > My question is "does that mean I can not get the battery information > in real-time?", I mean if I launch the application at 00:00:00, then > return to home screen, > then relaunch it at 00:00:30, then maybe none of the status changed, > does that mean I can not get any status information? You need to try it out to see what happen. My case is little different from yours. For me, my driver does not generate battery cap change uevent. SO I have to run a timer to poll the status out and send the intent. So I don't have your problem.
Another way you can do your job is to poll the battery status from sys/power_supply directory by your self. > > Thanks. > > On May 26, 3:16 pm, Dianne Hackborn <hack...@android.com> wrote: > > On Mon, May 25, 2009 at 8:12 PM, zhangxiyuan <zhangzho...@gmail.com> wrote: > > > And I have three other questions: > > > 1. Which apis will be included in the sdk public api? Is there any > > > description about it? > > > > The official public SDK is only the things described here: > > > > http://developer.android.com/reference/packages.html > > > > And yes, @hide is used to keep classes and methods out of the SDK. > > > > 2. I modified the com.android.settings.BatteryInfo activity to another > > > > > activity, delete all the api invocation to the non-public api, > > > I can still get the battery information such as level, scale, ... > > > so, I think what I really need to do is just impelement the > > > BroadcastReceiver, and registerReceiver in the onCreate or onResume > > > methods. > > > Is that right? > > > > Yes, as I said, most of the information is sent as a sticky broadcast. > > > > > 3. I do not have a real android-based phone, so I just run the > > > application on the emulator, I got the following information all the > > > time: > > > Battery status: Charging (AC) > > > Battery level: 50 > > > Battery scale: 100 > > > Battery health: Good > > > Battery voltage: 0 mV > > > Battery temperature: 0.0°C > > > Battery technology: Li-ion > > > I wonder how can I get different information by changing some > > > configurations of the emulator? > > > > Sorry can't help with that. > > > > -- > > 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, and so won't reply to such e-mails. 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 -~----------~----~----~----~------~----~------~--~---
