Hi, Magic List,
Could you tell me the minimal system server to display a GUI
"desktop"? by desktop, i mean the "HOME" activity, wallpaper , and
launcher stuffs, which are basic.
Here is my story. We are bringing up a prototype of android system
basing on cupcake. In current stage, we just want to verify our SoC is
functional enough to port full-fledged android. now we are ready to
LCDC driver. i made up a virtual power manager driver in kernel so
PowerManager hadn't complain. nowadays, I started the System Server
with SurfaceFlinger can see a big word "ANDROID" flashing.
I observed the 1st activity (HOME process?) had been started. but it
died soon. ActivityManager processed a MSG named
"PROC_START_TIMEOUT_MSG".
more information are dumped in the following log. what's the meaning
of "failed to attach". attach what? it's worth noting that system
server doesn't die with PID344 by now. the animation of "ANDROID" is
still moving and "shell" is usable. What's the state of system server
now?
I/ActivityManager( 310): Starting activity: Intent
{ action=android.intent.action.MAIN
categories={android.intent.category.HOME} flags=0x10000000
comp={com.android.launcher/com.android.launcher.Launcher}
D/ActivityManager( 310): Start running!
I/Zygote ( 310): Process: zygote socket opened
I/ActivityManager( 310): Start proc android.process.acore for
activity com.android.launcher/.Launcher: pid=344 uid=10000 gids={}
I/ActivityManager( 310): startProcessLocked pid >0
W/ResourceType( 310): No package identifier when getting value for
resource number 0x00000000
W/StatusBar( 310): Icon not found in <system>: 0
W/ActivityManager( 310): Process ProcessRecord{2e5b9a48
344:android.process.acore/10000} failed to attach
I/Process ( 310): Sending signal. PID: 344 SIG: 9
E/power ( 310): Failed setting last user activity: g_error=0
W/ActivityManager( 310): goingToSleep with no resumed activity!
Do the warnings of ResourceTypes and StatusBar matter? can anybody
give me a hint why PID344 died? i made up the pm(power manager) in
kernel. I'm not sure PowerManager is functional in android. does it
matter?
i enlist an intuitive list of minimal system server to display a GUI,
please do me a favor to comment on it.
1) ActivityManager
2) PowerManger
3) PackageManger
4) Window Manager
5) Surfaceflinger
6) Audio flinger -- i removed it before, but StatusBar need it to draw
volume.
7) Launcher.apk
8) Settings.apk and SettingsProvider.apk
by the way, ActivityManagerService(AM) and PowerManagerService(PM) are
too involved. could anybody kind give me helpful text to explain its
mechanism?
Thanks,
--lx
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