[How-To] Enable Hardware LED and Camera flash - XPERIA X10 Android Development

As more and more people are interested to port roms from other phones to our x10, these 2 features are usually missing and need some modifications to work properly.
Here is a simple guide to enable these 2 features on our x10
Pre-Requisite
1. You need to know how to use apktool or any tool that can decompile/compile apks.
2. You need to know how to use smali/baksmali tool
This is not a tutorial of how to use apktool or smali tool. Please google for the above for downloads and tutorials
Credits to Z&J for their great FreeX10 rom that provides a base for reference.
Enable Hardware LED
You need to modify framework-res.apk (in /system/framework folder)
1. backup the original framework-res.apk
2. use apktool to decode framework-res.apk to a folder
syntax:
Code:
apktool d framework-res.apk
This should create a folder "framework-res" in the current folder
3. use a text editor (eg notepad++) to open the file <foldername>/res/values/array.xml
look for something similar to below:
Code:
<integer-array name="config_autoBrightnessLevels">
<item>200</item>
<item>400</item>
<item>1000</item>
<item>3000</item>
</integer-array>
<integer-array name="config_autoBrightnessLcdBacklightValues">
<item>25</item>
<item>55</item>
<item>70</item>
<item>70</item>
<item>250</item>
</integer-array>
<integer-array name="config_autoBrightnessButtonBacklightValues">
<item>255</item>
<item>255</item>
<item>0</item>
<item>0</item>
<item>0</item>
</integer-array>
<integer-array name="config_autoBrightnessKeyboardBacklightValues">
<item>0</item>
<item>0</item>
<item>0</item>
<item>0</item>
<item>0</item>
</integer-array>
and replace it with:
Code:
<array name="config_autoBrightnessLevels" />
<array name="config_autoBrightnessLcdBacklightValues" />
<array name="config_autoBrightnessButtonBacklightValues" />
<array name="config_autoBrightnessKeyboardBacklightValues" />
4. open the file <foldername>/res/values/bools.xml
looks for the line:
Code:
<bool name="config_automatic_brightness_available">true</bool>
and change the word "true" to "false"
5. compile the apk
syntax:
Code:
apktool b <foldername>
6. replace the resources.arsc in original framework-res.apk with the one in <foldername>/build/apk folder
Note: I use TotalCommander as it has 2 pane windows and can open apk file as folder but there should be many guides in the App & Theme section
that teach you how to replace resources file in framework-res.apk
7. replace the framework-res.apk in /system/framework folder
8. reboot
Enable Camera Flash Light
You need to modify services.jar (in /system/framework folder)
1. backup the original services.jar
2. use winrar to extract classes.dex from services.jar
3. use smali/baksmali tool to decode classes.dex to a folder
syntax:
Code:
java -jar baksmali.jar -o <foldername>/ classes.dex
4. use a text editor (eg notepad++) to open the file <foldername>/com/android/server/LightsService.smali
5. look for lines that contain this (there should be 5 of them):
Code:
"/sys/class/leds/spotlight/brightness"
or
"/sys/class/leds/flashlight/brightness"
and replace it with:
Code:
"/sys/class/leds/lv5219lg:fled/spotlight_enable"
6. use smali/baksmali tool to compile classes.dex
syntax:
Code:
java -Xmx512M -jar smali.jar <foldername>/ -o classes.dex
7. replace classes.dex in services.jar with the new classes.dex using winrar
8. replace the services.jar in /system/framework folder
9. reboot
10. test it with switchpro or LED Light (from market) or vignette (provided camera works)
Notes:
1. If booting fails that'd mean something wrong in compiling / packing the apk. please replace the original file
2. The method may not apply to every rom. Do it at your own risk.
Pls hit "Thanks" if it helps you

---

This guide was so badly needed,
awesome job bro.... Thumbs up to this awesome guide

---

@cobrato
thank you for this!!!
it will help many ppl who r porting ROMs
@all
u can find the above mentioned tools in most android kitchens [email protected]
some useful links:
one of the best kitchens available: dsixda's HTC Android Kitchen
for smali/baksmali tool http://code.google.com/p/smali/
EASYapkTOOLcompilerDECOMPILER

---

can this be used to turn of the keyboard lights?

---

can someone make a xrec zip for this?

---

Would a flashable zip be possible?
sent from my gingerbread powered c64 with NO wlod

---

chiefy009 said:
Would a flashable zip be possible?
sent from my gingerbread powered c64 with NO wlod
Click to expand...
Click to collapse
Of course it will be possible. But it will be rom secific.
Sent from my X10project using XDA Premium App

---

Ask for patch in TripNreaver Miui 1.0.6
Hi,
Im dumb in commandline, so i ask for someone please to help me in make this patch.
Im ataching the framework_res.apk and services.jar from tripmiui 1.0.6.
http://www.megaupload.com/?d=GK7UQZF0
thanks in advance.

---

Has anybody checked if this works?
Cobrato appreciate that someone took out a patch for 1.0.63 tripmiui?

---

Hello, i keep breaking my device...:-( stuck in step 6...

---

Thanks cobrato , can you make this work in a flashable zip format so we can install it directly to the phone with the no hassle of typing.

---

flashable zip will be really greatfull...

---

For flashable zip you'll need to do it for each rom and that's not the purpose of this thread

---

For those who are interested. Applied to Trip's MIUI 1.07 using this tutorial. (Great COBS! Easy to follow!)
framework - http://dl.dropbox.com/u/11996466/framework-res.apk
Services.jar - http://dl.dropbox.com/u/11996466/services.jar
It works for me!

---

armic said:
For those who are interested. Applied to Trip's MIUI 1.07 using this tutorial. (Great COBS! Easy to follow!)
framework - http://dl.dropbox.com/u/11996466/framework-res.apk
Services.jar - http://dl.dropbox.com/u/11996466/services.jar
It works for me!
Click to expand...
Click to collapse
Are those the files needed for trips 1.07?
Sent from my X10i TripNMiUI using XDA App

---

kylec said:
Are those the files needed for trips 1.07?
Sent from my X10i TripNMiUI using XDA App
Click to expand...
Click to collapse
try Trips' without this and observe if there are hardware led and flash using vig.

---

armic said:
For those who are interested. Applied to Trip's MIUI 1.07 using this tutorial. (Great COBS! Easy to follow!)
framework - http://dl.dropbox.com/u/11996466/framework-res.apk
Services.jar - http://dl.dropbox.com/u/11996466/services.jar
It works for me!
Click to expand...
Click to collapse
hey, great job.
which permissions need to be set for framework-res.apk to work?

---

can it use for enable flash light for video recording in cm 6.1.3 ?

---

pedrocel85 said:
hey, great job.
which permissions need to be set for framework-res.apk to work?
Click to expand...
Click to collapse
Both
X X -
X - -
X - -
Sent from my X10i TripNMiUI using XDA Premium App

---

farzin_silver said:
can it use for enable flash light for video recording in cm 6.1.3 ?
Click to expand...
Click to collapse
As COB said, we need to do it on every ROM separately.
Sent from my X10i TripNMiUI using XDA Premium App