[MOD] Lower auto brightness to save battery

joshnichols189 said:

Will this work on something like Xylon?

Click to expand...

Click to collapse

neotekz said:

if you have some experience with apk manager you can do this yourself it's fairly easy. Here's a write up i did for the galaxy nexus a while ago. It should be similar for the nexus 4 just different values for the brightness.

Basically what you have to do is decompile the framework-res.apk and change the values is arrays.xml and recompile and push it back using adb.

1. Download APK manager
2. Grab framework-res.apk from your phone under \system\framework\ (you can use root explorer or adb push) and place it in the "place-apk-here-for-modding" folder
3. Run Script.bat and select option 9
4. go to projects\framework-res.apk\res\values\arrays.xml and edit your values with the ones roger posted in my link above
5. Once edited, compile the apk using option 11
6. Is this a system apk. Ans: y
7. Qn: Aside from the signatures...least. Ans: y
8. Prompt: In the apk manager folder u'll find a keep folder..... done then press enter on this script. Press any key to continue . . . go to "keep" folder and delete resources.arsc and then press any key
9. Choose option 22 to set project to unsignedframework-res.apk
10. Choose option 5 to zipalign the new apk.
11. rename the unsignedframework-res.apk to framework-res.apk and push it to system/framework with these commands in adb.

Code:

Mount System in recovery

adb push framework-res.apk /system/framework/framework-res.apk
reboot

here are the values in arrays.xml to be changed. (the values and number of items will probably be different for the Nexus 4 but you can add or delete items if you want more or less brightness settings)

Code:

<integer-array name="config_autoBrightnessLcdBacklightValues"> 
<item>16</item> 
<item>40</item> 
<item>60</item> 
<item>70</item> 
<item>70</item> 
<item>250</item> 
</integer-array>

here's what i had the new values at.(The lower value of 5 might be too dim or bright for the nexus 4 so you might have to see what you prefer)

Code:

<integer-array name="config_autoBrightnessLcdBacklightValues"> 
<item>5</item> 
<item>20</item> 
<item>50</item> 
<item>70</item> 
<item>150</item> 
<item>250</item> 
</integer-array>

You can play around with the numbers to see what suits you. Just make sure you do a nandroid backup before attempting this mod.

Click to expand...

Click to collapse

newcastle9 said:

I posted a apk manager that works with android 4.2.1

http://xdaforums.com/showthread.php?t=2063477

Sent from my Nexus 4 using Tapatalk 2

Click to expand...

Click to collapse

neotekz said:

if you have some experience with apk manager you can do this yourself it's fairly easy. Here's a write up i did for the galaxy nexus a while ago. It should be similar for the nexus 4 just different values for the brightness.

Basically what you have to do is decompile the framework-res.apk and change the values is arrays.xml and recompile and push it back using adb.

1. Download APK manager
2. Grab framework-res.apk from your phone under \system\framework\ (you can use root explorer or adb push) and place it in the "place-apk-here-for-modding" folder
3. Run Script.bat and select option 9
4. go to projects\framework-res.apk\res\values\arrays.xml and edit your values with the ones roger posted in my link above
5. Once edited, compile the apk using option 11
6. Is this a system apk. Ans: y
7. Qn: Aside from the signatures...least. Ans: y
8. Prompt: In the apk manager folder u'll find a keep folder..... done then press enter on this script. Press any key to continue . . . go to "keep" folder and delete resources.arsc and then press any key
9. Choose option 22 to set project to unsignedframework-res.apk
10. Choose option 5 to zipalign the new apk.
11. rename the unsignedframework-res.apk to framework-res.apk and push it to system/framework with these commands in adb.

Code:

Mount System in recovery

adb push framework-res.apk /system/framework/framework-res.apk
reboot

here are the values in arrays.xml to be changed. (the values and number of items will probably be different for the Nexus 4 but you can add or delete items if you want more or less brightness settings)

Code:

<integer-array name="config_autoBrightnessLcdBacklightValues"> 
<item>16</item> 
<item>40</item> 
<item>60</item> 
<item>70</item> 
<item>70</item> 
<item>250</item> 
</integer-array>

here's what i had the new values at.(The lower value of 5 might be too dim or bright for the nexus 4 so you might have to see what you prefer)

Code:

<integer-array name="config_autoBrightnessLcdBacklightValues"> 
<item>5</item> 
<item>20</item> 
<item>50</item> 
<item>70</item> 
<item>150</item> 
<item>250</item> 
</integer-array>

You can play around with the numbers to see what suits you. Just make sure you do a nandroid backup before attempting this mod.

Click to expand...

Click to collapse

thesebastian said:

Tried to do that...but i tried to install the compiled apk with "Solid Explorer".
I finished up with all crashing (because of the framework-res replacement) and after a forced reboot i got a boot loop ( i think ). (Oh, i forgot to edit permissions whether its needed) haha
Nandroid restore after that :good:

But i really wanted to try Paranoid Android values in Nexus 4.

I need a more detailed guide because i'm doing something wrong...
I copy/pasted the resources file (from original framework-res.apk) in order to "compile" the apk.....after that...zipaligned.....and then tried to install it normal (but can't) second..tried to install it with the explorer..

Click to expand...

Click to collapse

neotekz said:

Try using a different version of apk manager. I remember having to use a few different versions before it worked. I don't remember what version. It might of been apktool that I used. I haven't done this mod in a while since the auto brightness of the nexus 4 with AOKP is good and I just use screen dim when I want to go lower.

Click to expand...

Click to collapse