[Q] How to add Soft keys (Menu ,Home & Back Button) in android 4.2.1 jeely bean? - Android Q&A, Help & Troubleshooting

Hi I am a 4.2.1 Jelly Been user. & my Hardwere keys( Menu Key , Home Button ,& Back Key) are not working anymore.
but my screen works fine.
Can any one tell me how to add soft keys on screen without rooting my device?
I am using apps from google play which can enable Home & Back soft key without rooting my device.
But i dont want to use any app like that because it prob a lot.
How to add these three keys without using any app from play store?
can anyone tell me the coding ? & how to do it ?
& will be great if the menu key is also be enable on screen with out rooting my device.
I have seen post which tells how to enable the on-screen navigation buttons but it required root.
Please somebody help me out.
Home & Back button code will be fine too if without root.
& will be great if with menu key.
i will appreciate your help:good:
Thanks in Advance :angel:

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Sankha1 said:
Hi I am a 4.2.1 Jelly Been user. & my Hardwere keys( Menu Key , Home Button ,& Back Key) are not working anymore.
but my screen works fine.
Can any one tell me how to add soft keys on screen without rooting my device?
I am using apps from google play which can enable Home & Back soft key without rooting my device.
But i dont want to use any app like that because it prob a lot.
How to add these three keys without using any app from play store?
can anyone tell me the coding ? & how to do it ?
& will be great if the menu key is also be enable on screen with out rooting my device.
I have seen post which tells how to enable the on-screen navigation buttons but it required root.
Please somebody help me out.
Home & Back button code will be fine too if without root.
& will be great if with menu key.
i will appreciate your help:good:
Thanks in Advance :angel:
Click to expand...
Click to collapse
try the link
http://forum.xda-developers.com/nexus-s/development/mod-softkeys-ics-jb-roms-t1918632

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Vaibhav Chauhan said:
try the link
http://forum.xda-developers.com/nexus-s/development/mod-softkeys-ics-jb-roms-t1918632
Click to expand...
Click to collapse
He said without root, and for this package, you need to flash a .zip which requires root.
If you have root, the easier way without any apps is this:
http://forum.xda-developers.com/showthread.php?t=2032117
I can't find any way to enable them without root. Sorry.

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AAbounegm said:
He said without root, and for this package, you need to flash a .zip which requires root.
If you have root, the easier way without any apps is this:
http://forum.xda-developers.com/showthread.php?t=2032117
I can't find any way to enable them without root. Sorry.
Click to expand...
Click to collapse
there is a another way by application called softkey enabler works without rooting and this is the easiest way
you can find it on play store

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Vaibhav Chauhan said:
there is a another way by application called softkey enabler works without rooting and this is the easiest way
you can find it on play store
Click to expand...
Click to collapse
The only one I found with this name is this: https://play.google.com/store/apps/details?id=com.fatedevgroup.softkeyenabler
And it says it requires root.

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AAbounegm said:
The only one I found with this name is this: https://play.google.com/store/apps/details?id=com.fatedevgroup.softkeyenabler
And it says it requires root.
Click to expand...
Click to collapse
i am also talking about that app but i did't see it require root

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Thanks you guys so much for replying.. :angel::good:
But there are others apps too which can provide soft keys without root (Home & back button only)
like
1) Back button ( https://play.google.com/store/apps/details?id=com.appspot.app58us.backkey&hl=en )
2) Virtual Button non ROOT for JB ( https://play.google.com/store/apps/details?id=jp.ne.neko.freewing.VirtualButton )
3) Button Savior Non Root ( https://play.google.com/store/apps/details?id=com.smart.swkey.nonroot&hl=en )
I was wondering if a app can provide soft Back & Home keys without any root (like the apps i mentioned above) then there must be some ways to do so by coding & by not using these apps.
like this one u guys mentioned. http://forum.xda-developers.com/showthread.php?t=2032117 , but unfortunately it required root which i dont wanna do because i don't want my device to be vulnerable.
so plz if anyone know the coding of even Home & Back soft keys plzz plzzz plzz tell me. because i really need it ,
Because my awesome Hard keys is dead. & without these keys my phone is useless.:crying:
BTW again Thank you guys very much for replying :good::angel:

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Sankha1 said:
Thanks you guys so much for replying.. :angel::good:
But there are others apps too which can provide soft keys without root (Home & back button only)
like
1) Back button ( https://play.google.com/store/apps/details?id=com.appspot.app58us.backkey&hl=en )
2) Virtual Button non ROOT for JB ( https://play.google.com/store/apps/details?id=jp.ne.neko.freewing.VirtualButton )
3) Button Savior Non Root ( https://play.google.com/store/apps/details?id=com.smart.swkey.nonroot&hl=en )
I was wondering if a app can provide soft Back & Home keys without any root (like the apps i mentioned above) then there must be some ways to do so by coding & by not using these apps.
like this one u guys mentioned. http://forum.xda-developers.com/showthread.php?t=2032117 , but unfortunately it required root which i dont wanna do because i don't want my device to be vulnerable.
so plz if anyone know the coding of even Home & Back soft keys plzz plzzz plzz tell me. because i really need it ,
Because my awesome Hard keys is dead. & without these keys my phone is useless.:crying:
BTW again Thank you guys very much for replying :good::angel:
Click to expand...
Click to collapse
for enabling soft buttons via coding you need to edit system files which require root so you can not add softkeys by coding without root

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Vaibhav Chauhan said:
for enabling soft buttons via coding you need to edit system files which require root so you can not add softkeys by coding without root
Click to expand...
Click to collapse
I understand but then how these apps like "Back Button" doing this without rooting my phone.
i did not root my phone till now & used black button app.
& it can creat Home & Back soft keys on my screen without rooting.
If a app can creat Home & Back Button with out root then it could be done by coding too?

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Sankha1 said:
I understand but then how these apps like "Back Button" doing this without rooting my phone.
i did not root my phone till now & used black button app.
& it can creat Home & Back soft keys on my screen without rooting.
If a app can creat Home & Back Button with out root then it could be done by coding too?
Click to expand...
Click to collapse
please explain how you will done it by coding

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Vaibhav Chauhan said:
please explain how you will done it by coding
Click to expand...
Click to collapse
This is what i have asked too...
how to do it by coding?
if a app can do it without rooting my phone then how to do it?

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Sankha1 said:
This is what i have asked too...
how to do it by coding?
if a app can do it without rooting my phone then how to do it?
Click to expand...
Click to collapse
if you want to edit system file to coding you need root
without root it can not done

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Vaibhav Chauhan said:
if you want to edit system file to coding you need root
without root it can not done
Click to expand...
Click to collapse
Oke i will root my phone then ..
so can you tell me how to add menu soft key by coding?
please describe the process..

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Sankha1 said:
Oke i will root my phone then ..
so can you tell me how to add menu soft key by coding?
please describe the process..
Click to expand...
Click to collapse
in this link
http://forum.xda-developers.com/showthread.php?t=2032117

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Vaibhav Chauhan said:
in this link
http://forum.xda-developers.com/showthread.php?t=2032117
Click to expand...
Click to collapse
Well Thanks a lot..

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Well Finally i Root my phone using Framaroot-1.9.1 .apk. & Does As Describe Below :
1) open Es file explorer.
2) go to system & open "build.prob" with text editer.
3) & in the buttom of file i put this value qemu.hw.mainkeys=0 & save & exit.
4) shut down my phone & on again.
But the ****ing Navigation bar did not appear.
I repeat this above step 10 time & shut down my phone & on again but still this ****ing Navigation bar did not appear.
can anybody tell me why?
i am using a karbonn titenium s2 white model.

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Sankha1 said:
Well Finally i Root my phone using Framaroot-1.9.1 .apk. & Does As Describe Below :
1) open Es file explorer.
2) go to system & open "build.prob" with text editor.
3) & in the bottom of file i put this value qemu.hw.mainkeys=0 & save & exit.
4) shut down my phone & on again.
But the ****ing Navigation bar did not appear.
I repeat this above step 10 time & shut down my phone & on again but still this ****ing Navigation bar did not appear.
can anybody tell me why?
i am using a karbonn titanium s2 white model.
Click to expand...
Click to collapse
I found 2 solutions for your problem:
1- Try adding "ro.show.navigationbar=0" instead of "qemu.hw.mainkeys=0" (without the quotation marks ). But first make sure that they aren't present in the beginning. (Got this from: http://bit.ly/1sosAta )
2- The other way is by flashing a .zip file made by an XDA member and he posted it on this thread: http://forum.xda-developers.com/galaxy-s3/themes-apps/mod-enable-screen-nav-soft-keys-t1918166
Here is the download link: http://nrecom.net/downloads/summary/11-navbar/189-nav-universal-aroma-16
Try this. I hope I helped

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AAbounegm said:
I found 2 solutions for your problem:
1- Try adding "ro.show.navigationbar=0" instead of "qemu.hw.mainkeys=0" (without the quotation marks ). But first make sure that they aren't present in the beginning. (Got this from: http://bit.ly/1sosAta )
2- The other way is by flashing a .zip file made by an XDA member and he posted it on this thread: http://forum.xda-developers.com/galaxy-s3/themes-apps/mod-enable-screen-nav-soft-keys-t1918166
Here is the download link: http://nrecom.net/downloads/summary/11-navbar/189-nav-universal-aroma-16
Try this. I hope I helped
Click to expand...
Click to collapse
Thank You but i got another problem now, & i think big one!
after trying so many time the 1st process i describe above & failed ,
I overwrite the "build.prob" file with a "build.prob" file which i manually copy using Es file explorer before rooting my device from SD Card.
But Before i overwrite i again edit the back up file & put this value qemu.hw.mainkeys=0 in it , & Then overwrite it.
& Then I unchecked "Quick Boot " Option In settings & shut down my phone & try to turn it on again but since then my phone is not starting. though the starting animation are playing at the moment i turn it on but freeze then, at the end of the starting animation.
I open boot loader by pressing Volume down + Power key together until the boot menu appear & Clear "eMMC" 3 times & reboot . but nothing happened.
Can u tell me what the hell happened with my phone? & How can i make it work again?

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Sankha1 said:
Can u tell me what the hell happened with my phone? & How can i make it work again?
Click to expand...
Click to collapse
It's boot looping because you've done something wrong, so if you don't have CWM and a backup installed you'll have to reflash your device. You'll have to check your devices forum for help with that.

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XperienceD said:
It's boot looping because you've done something wrong, so if you don't have CWM and a backup installed you'll have to reflash your device. You'll have to check your devices forum for help with that.
Click to expand...
Click to collapse
But what did go wrong? I did not flash any custom rom . Neither i delete any system file . I did successfully root my phone.
& checked it with "Root Checker" apps too.
Then what goes wrong?
& how to reflash my device?