[Mod] Change Headset Button Control

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I take no credit for this Mod. I found this posted in the i9300 section here http://forum.xda-developers.com/show...1767954&page=2. All credit goes to andrewilley.

What this does is map the volume up and down controls on the headset to next and previous track instead. I suggest that you only use this if you are using the wired headphones and want that functionality. Because this will change it for bluetooth devices also. So if you have a headset that already has buttons for both volume and tracks this isn't for you.

Here is andrews post from that thread.

I've managed to get the second and third headset buttons acting as next/previous track functions - without needing any extra software (although of course you can add extra facilities using Headset Button Controller later if you wish). The side volume rocker still works for volume control.

 Christoph Kober pointed me to some documentation on the Android key mapping files (http://source.android.com/tech/input...out-files.html) which helped me in the right direction. I first tried to edit the small file which looked like it handled the headset, but that did not change anything. Then I tried editing the master key mapper file, and that did the job. I assumed that this would also remap the on-device volume buttons too, but fortunately there is another mapping file which overrides the generic one to handle the four hardware buttons - so they get re-mapped back to volume again. Perfect!

 You'll need root access and a text editor for this. Don't mess with this lightly, you are editing system files!!!

 1) Navigate to folder /system/usr/keylayout/
 2) Backup the current Generic.kl file (you were going to do that anyway, right? If you weren't, probably best not go any further...)
 3) Edit the file Generic.kl using a text editor
 3) Comment out the lines for keys 114 and 115 (just put a # at the start of those two lines) thus:
 # key 114 VOLUME_DOWN WAKE
 # key 115 VOLUME_UP WAKE
 4) Find the lines for keys 163 and 165, which look like this:
 key 163 MEDIA_NEXT WAKE
 key 165 MEDIA_PREVIOUS WAKE
 5) change the numbers from '163' to '115', and from '165' to '114', thus:
 key 115 MEDIA_NEXT WAKE
 key 114 MEDIA_PREVIOUS WAKE
 6) Save and reboot

 Andre

Here are recovery zips if you want to flash. You can also use these to flash back and forth if need be. Files were taken from LG1.

Download: http://d-h.st/asK
MD5: aa8334da5d76d8e0a0dd26eafac269c6

Uninstaller Download (reverts back to stock): http://d-h.st/2DC
MD5: c2bd8ccbe81c230ef97997267b600d0c

Originally Posted by crawrj

I take no credit for this Mod. I found this posted in the i9300 section here http://forum.xda-developers.com/show...1767954&page=2. All credit goes to andrewilley.

What this does is map the volume up and down controls on the headset to next and previous track instead. I suggest that you only use this if you are using the wired headphones and want that functionality. Because this will change it for bluetooth devices also. So if you have a headset that already has buttons for both volume and tracks this isn't for you.

Here is andrews post from that thread.

I've managed to get the second and third headset buttons acting as next/previous track functions - without needing any extra software (although of course you can add extra facilities using Headset Button Controller later if you wish). The side volume rocker still works for volume control.

 Christoph Kober pointed me to some documentation on the Android key mapping files (http://source.android.com/tech/input...out-files.html) which helped me in the right direction. I first tried to edit the small file which looked like it handled the headset, but that did not change anything. Then I tried editing the master key mapper file, and that did the job. I assumed that this would also remap the on-device volume buttons too, but fortunately there is another mapping file which overrides the generic one to handle the four hardware buttons - so they get re-mapped back to volume again. Perfect!

 You'll need root access and a text editor for this. Don't mess with this lightly, you are editing system files!!!

 1) Navigate to folder /system/usr/keylayout/
 2) Backup the current Generic.kl file (you were going to do that anyway, right? If you weren't, probably best not go any further...)
 3) Edit the file Generic.kl using a text editor
 3) Comment out the lines for keys 114 and 115 (just put a # at the start of those two lines) thus:
 # key 114 VOLUME_DOWN WAKE
 # key 115 VOLUME_UP WAKE
 4) Find the lines for keys 163 and 165, which look like this:
 key 163 MEDIA_NEXT WAKE
 key 165 MEDIA_PREVIOUS WAKE
 5) change the numbers from '163' to '115', and from '165' to '114', thus:
 key 115 MEDIA_NEXT WAKE
 key 114 MEDIA_PREVIOUS WAKE
 6) Save and reboot

 Andre

Here are recovery zips if you want to flash. You can also use these to flash back and forth if need be. Files were taken from LG1.

Download: http://d-h.st/asK
MD5: aa8334da5d76d8e0a0dd26eafac269c6

Uninstaller Download (reverts back to stock): http://d-h.st/2DC
MD5: c2bd8ccbe81c230ef97997267b600d0c

Works like a charm

Sent from my SAMSUNG-SGH-I747 using xda premium

How can this be used on the actual phone volume buttons instead of the headset? It does work good tho.

Originally Posted by KryPTiCk0d3

How can this be used on the actual phone volume buttons instead of the headset? It does work good tho.

You would have to find to volume rocker buttons and change them but then you couldn't change the volume with them.

Sent from my SAMSUNG-SGH-I747 using xda premium

Would that be in the same generic.kl? or in a different spot? I use that an awful lot, more than volume adjust... so I could live with it for now until a custom rom comes out with it included, not sure of any yet.

Originally Posted by KryPTiCk0d3

Would that be in the same generic.kl? or in a different spot? I use that an awful lot, more than volume adjust... so I could live with it for now until a custom rom comes out with it included, not sure of any yet.

I haven't dug into it yet so not sure. I would expect it to be though. When I get some time I will check it out.

Sent from my SPH-D710 using xda premium

I wanna set that when I hold the headset button that it launches S Voice

Originally Posted by XblackdemonX

I wanna set that when I hold the headset button that it launches S Voice

Doesn't it already do that? Thought I read that on the stock headphones?

Edit: Guess not I just tried it. But I discovered that if you double tap play button it will skip to next track.

Sent from my SPH-D710 using xda premium

Originally Posted by crawrj

Doesn't it already do that? Thought I read that on the stock headphones?

Edit: Guess not I just tried it. But I discovered that if you double tap play button it will skip to next track.

Sent from my SPH-D710 using xda premium

lol i know that double-click skips track...

that doesn't help me lol

is there any way to make it like the g2 where it doesn't change tracks unless you hold it? and if you just click it it still increases or decreases the volume