My HD2 "Frankenphone" (it's built from no less than 3 other HD2's) has no working hardware keys on the front of the phone. The volume keys, however, do still work. I therefore want to cook a rom based on an existing one that has Volume up/down mapped to HOME/Back.
Furthermore, I was wondering if I could somehow get the MENU button implemented as well. I understand that this is not possible through the SDK, but perhaps it can be done by writing native C code. E.g. a longpress Volume-up could be menu, a long-press Volume-down could be search.
I'm not asking for someone to do this for me, I'd like to do this myself. What I'm looking for are a few quick pointers to how to start this endeavor. I have previous experience cooking custom roms using toolchains under linux, and also experience writing C (non-gui) code under linux. So useful pointers would be :
* Where can I find the key mappings? I suppose this is part of the kernel/user space?
* How would I go about implementing the long-press feature? Or can you hint towards another possible solution that does not involve the front hardware keys (touchscreen snooping for gestures? accellerometer? Any other sensor?)
Take a look here:
http://source.android.com/porting/keymaps_keyboard_input.html
Hope that helps.
One thing I do in most builds is change my call key to a search key.
Hi!
Take a look at the following thread! http://forum.xda-developers.com/showthread.php?t=740629
paalkr said:
Hi!
Take a look at the following thread! http://forum.xda-developers.com/showthread.php?t=740629
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Click to collapse
Awesome, thanks! That worked like a charm. Mounted the system.ext2 loopback, patched the keys, and tadaah, working home + back. That at least makes the phone usable again.
Can anyone recommend a solution to get a working MENU action? It looks like long-press back is handled by apps individually (e.g. in the browser it will show a history), while long-press home displays a task switcher. I could live with long-press back being handled by android itself to implement the menu function.
(edit) looks like this is possible, e.g. here it mentions "including some special features to support the virtual hard keys that are appearing on recent devices such as Droid." Now how did they do that?
Just wondering about the feasibility of (someone with the know-how) creating a background app/service that could monitor and intercept the Nook's Vol+ and Vol- buttons, and if held down for a certain amount of time, perform Menu or Back actions as well.
I would think this possible, based on CM ROMs' ability to skip forwards/backwards from the lockscreen when music is playing, as well as the official XBMC Remote's abililty to change the volume for media playing on an XBMC box without interfering with the volume on the actual Android device.
Under the stock BN ROM I had remapped the Vol buttons, which wasn't a problem since the speaker was barely audible in the first place, but since flashing Dalingrin's OC kernel with the increased volume, I (happily) find the need to be able to change the volume levels easily.
I can't be the only one who's pondered this, but I've read through most of the threads and don't recall seeing this anywhere... If I've missed it, please point me in the right direction.
Thoughts? Takers?
Thanks.
You mean like this easily flashable script in the development forum (page 2).
http://forum.xda-developers.com/showthread.php?t=965023
I am talking an app which would retain volume functionality if the buttons are pressed briefly, as well as implement menu / back functions if held.
Unfortunately it looks like that script you linked to simply remaps the volume keys to menu and back -- without retaining volume functionality:
EpicFail236 said:
[...]
I find that my need for physical menu and back buttons is greater than my need for physical volume buttons.
[...]
This zip is CWM flashable, and simply overwrites the keymap kl files with ones that have the volume buttons remapped.
[...]
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Not exactly what you want, but a simple solution.
see this, tip #7. Its a simple edit to a text file.
Worked on CM7, heres my edited /system/usr/keylayout/qwerty.kl vol up=menu, down=back
Thanks; unfortunately that is the essentially same as sparhawk's solution, and what I did under the BN ROM.
What I'm looking for is a solution via an application that retains the volume button functionality and augments the buttons with menu/back ability and does not simply remap the volume buttons.
If I had the slightest inkling as to how to do this myself, I would. Unfortunately I've tried and failed (miserably) so far at attempting to learn coding for Android.
I was hoping someone might be familiar with the way CM and XBMC Remote handle these intercepts and be able to adapt code, or create something similar for menu/back functionality.
I get what you are saying, but I don't think it would be possible. Notice how if you hold it down now, it will turn the volume down all the way step by step. When the screen is off, it doesn't do anything. If it was made to be held down to switch function, you would lose the ability to turn down the volume by holding it down. I know what I said is confusing, but just think about it lol. Have you thought about remapping tthe keys totally to menu/back, and then having a sound toggle in the pull down widget for the notification bar? You wouldn't have total control over the levels, but at least its something.
Sent from my ADR6300 using XDA App
Xephik said:
I get what you are saying, but I don't think it would be possible. Notice how if you hold it down now, it will turn the volume down all the way step by step. When the screen is off, it doesn't do anything.
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I am running CM7 n11 on the nook, and regardless of whether the screen is on or off: if music is playing, when I hit the volume button, the volume level is changed. Not sure what you're referring to.
Xephik said:
If it was made to be held down to switch function, you would lose the ability to turn down the volume by holding it down.
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I don't necessarily think that's the case.
Example: somehow CM is able to retain volume functionality and add skip next/previous track in music player. When I refer to the ability of CM to skip forward/backwards when music is playing, I am basing this on my experience with CM6.12 on my Droid1.
Xephik said:
Have you thought about remapping tthe keys totally to menu/back, and then having a sound toggle in the pull down widget for the notification bar? You wouldn't have total control over the levels, but at least its something.
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Yeah, done that and didn't love it. I believe a solution such as I'm suggesting would be much more "integrated," elegant, and convenient.
Basically the app would intercept a volume button press:
- brief press: button release < 300ms, app performs volume function
- long press: button held down or release > 300ms, perform back or menu
Are there any experienced devs who provide some insight?
tj!2k7 said:
Thanks; unfortunately that is the essentially same as sparhawk's solution, and what I did under the BN ROM.
What I'm looking for is a solution via an application that retains the volume button functionality and augments the buttons with menu/back ability and does not simply remap the volume buttons.
If I had the slightest inkling as to how to do this myself, I would. Unfortunately I've tried and failed (miserably) so far at attempting to learn coding for Android.
I was hoping someone might be familiar with the way CM and XBMC Remote handle these intercepts and be able to adapt code, or create something similar for menu/back functionality.
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Click to collapse
I've seen this behavior to control the Android music player. And honesty I don't see why it couldn't be adapted to throw a back or home interrupt. But to implement it is beyond me!
Here is a GitHub repo to handle the Android player on long press up and down but also still handle volume changes on short press.
https://github.com/metalhead8816/android_frameworks_policies_base
And I'm pretty sure the specific commit would be
https://github.com/metalhead8816/an...mmit/7504617a9211a65ce767281c59668e8641b8a14d
Mat Sumpter said:
Here is a GitHub repo to handle the Android player on long press up and down but also still handle volume changes on short press.
https://github.com/metalhead8816/android_frameworks_policies_base
And I'm pretty sure the specific commit would be
https://github.com/metalhead8816/an...mmit/7504617a9211a65ce767281c59668e8641b8a14d
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We're on a better path now. Thank you for posting concrete evidence of the volume buttons serving two simultaneous functions.
Could that code be used as a base for a standalone background app/service to implement the desired functionality? Better yet if it could be built into a ROM such as CM, but a standalone app would be perfect.
As this is really a question for devs, should I have posted this thread in the dev forum?
This code was put in for eclair so it won't apply cleanly to the Froyo code. But I'm sure a DEV with good Java knowledge could hack this into the current policy framework. From the code this appears pretty integral so I doubt this could be an outside apk that we install. This would likely be an alternate framework we'd need to apply to a ROM much like a style. But again I'm not an Android developer so I don't know for sure.
Button remapper works for the simple remapping, but not for the longpress actions.
I have half a mind to attempt writing a simple service for this
long press menu->vol up in 20% increments
long press back->vol down in 20% increments (may interfere with CM7 long press to kill functionality)
http://android-developers.blogspot.com/2009/12/back-and-other-hard-keys-three-stories.html
http://stackoverflow.com/questions/4983605/send-button-volume-button-action-listeners
http://developer.android.com/reference/android/view/KeyEvent.html
A service sounds (to a non-programmer such as myself) like it would be less involved than framework modifications, and portable across ROM updates.
And personally, I don't mind "losing" long-press-kill functionality as I never use it anyway... I'd love to see some progress along these lines... go for it. =)
If you decide to attempt create a service for this, could you be make the long/short actions customizable?
i.e. :
Short press Vol+: Volume up / Long-press Vol+: Menu
Short press Vol-: Volume down / Long-press Vol-: Back
vs.
Short press Vol+: Menu / Long-press Vol+: Volume up
Short press Vol-: Back / Long-press Vol-: Volume down
In most applications, Menu and Back are usable via the status bar; since that functionality would be redundant, it would be nice to retain quick access to volume for short presses. For instances where Menu and Back are not usable in full-screen applications, long-pressing the buttons to perform menu and back actions doesn't seem like much of an issue.
Actually, if the Menu and Back were long-press actions, couldn't you implement functionality to kill the current app if Back was held for a specific amount of time?
Just thought I'd bump this back to the top... any devs out there who might want to take a crack at something like this?
Until we get Honeycomb AOSP this "hack" would be perfect!
I'm on the lookout too. I'd much rather have my vol up and down keys then have them as back and home. Unfortunately I lack the skills to code it so far!
My prayers, answered. Thanks mad-murdock.
http://forum.xda-developers.com/showthread.php?t=1002000&page=23
I was looking for a way to modify the standard shutter button. I noticed the following line in the source code for the 2.3.2 official camera app:
Code:
mShutterButton = (ShutterButton) findViewById(R.id.shutter_button);
It seems to look if something is set as shutter button (I'm not great with programming though) and I was wondering if the R button could be set as the standard shutter button. It's in the perfect place and I'm abit amazed SE didn't make it the shutter button.
I am aware that there are camera apps for download that allow button mapping but I just wondered if it was possible to make the R the standard shutter button to use it with all apps and it would be nice to have in costum roms.
So if anyone could fix this or atleast set me or somebody else in the right direction to look for (like what file to edit) that would be awesome.
probably wrong place to mention this, but the X button is already mapped as the shutter button
Well, maybe it will, if not, thanks for the tip anyway, I could sue it personally
Any thoughts on whether it's possible to implement a dedicated camera button? It seems superfluous to have both the home button and the power button able to wake the screen, and it'd be great to have one be able to unlock to camera.
That wud be cool like assign pressing both volume up and volume down at the same time as the button
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Yes, this would be great. don't let the thread die.
tekhna said:
Any thoughts on whether it's possible to implement a dedicated camera button? It seems superfluous to have both the home button and the power button able to wake the screen, and it'd be great to have one be able to unlock to camera.
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I think in theory that would be great, but what button would you replace?
The home and power buttons both have functionality that the other doesn't do. Both can unlock the screen (as you pointed out), but they don't both lock the screen. Also, only one of them actually performs the "home button" functions. So both are really needed.
I think matrixzone5's suggestion of a two-button action would probably be required.
Someone's already implemented on screen ICS buttons on the SGSIII, so for me ideally I'd have the power button as the camera button and the home button as the wake/lock button. Works for me because my case makes the power button hard to press.
Is there any way to zoom using the volume button? I installed a different camera app ("open camera") which lets me do that, but it does not launch with the camera button. So if the answer to the first question is no, then is there away to change the camera that opens with the camera button?