Develop Bugs

Development Q&A - Ask Development Questions Here!

If you have any questions that may be development related please post them in here instead of making a new thread. Me and hopefully others will try to answer your question to the best of your abilities. Plus it saves me from moving a few hundred threads a day
Thanks!
CK

Where is the best place to learn Linux Kernel Development, or more specifically, Android Kernel Development (if there's any major differences in the two).
I have a slight Computer Science background from being self-taught in basic C programs, an understanding for Object Oriented Programming, and also learning Java throughout school.
I've heard that http://kernelnewbies.org/ is good as well as the standard www.kernel.com website to grab the latest kernel and start tinkering.

phragg said:
Where is the best place to learn Linux Kernel Development, or more specifically, Android Kernel Development (if there's any major differences in the two).
I have a slight Computer Science background from being self-taught in basic C programs, an understanding for Object Oriented Programming, and also learning Java throughout school.
I've heard that http://kernelnewbies.org/ is good as well as the standard www.kernel.com website to grab the latest kernel and start tinkering.
Click to expand...
Click to collapse
The sites you listed are pretty good, also try and learn a little C, or some google searching does wonders

overclocking issues
is it normal for the phone to not be overclocked as soon as the screen goes out?

akamu23 said:
is it normal for the phone to not be overclocked as soon as the screen goes out?
Click to expand...
Click to collapse
Well im not sure of your question, but you can set profiles in SetCPU so that when your screen goes off it can slow the clock down

[Q] Is the G2 capable of Screen Sharing/DLNA
I love my G2, but one feature that I wish the it incorporated is the DLNA screen sharing feature that the MyTouch 4g is touting. Does anyone know if this is something that's possible on the G2?

wrong forum!

i have to ask only because im clueless, wtf is DLNA screen sharing?
thanx, veritas

veritasaequita said:
i have to ask only because im clueless, wtf is DLNA screen sharing?
thanx, veritas
Click to expand...
Click to collapse
My understanding of it is this, it's the ability to stream content directly from your phone to a DLNA compliant device, kind of like a networked media storage device would do. It can be a substitute for TV out in some cases. I have some movies (home movies, photos, etc) that I just recorded on my G2 and want to watch them on my TV. Well, my PS3 is DLNA compliant and I would stream these movies through my PS3. If anyone else has anything to add or wants to correct anything that I may have misstated please do.

How can I enable the long-hold action for the Menu button that pops up the on-screen keyboard?

While I am foaming at the mouth to know how to make my g2 dlna, i have a far moar simple question.
Just need some help starting an app.. such as setcpu from visionary.sh.
I know i can set it from app to start on boot, but have run into it not having su permission at that point. yes I am a script or cmd line no0b but any help would be appreciated.

haensgn said:
While I am foaming at the mouth to know how to make my g2 dlna, i have a far moar simple question.
Just need some help starting an app.. such as setcpu from visionary.sh.
I know i can set it from app to start on boot, but have run into it not having su permission at that point. yes I am a script or cmd line no0b but any help would be appreciated.
Click to expand...
Click to collapse
I feel that's a bit more specific question to be asked in the visionARY app thread located: http://forum.xda-developers.com/showthread.php?t=808514
--
In regards to my posting, is there a decent Guide or Bible that has the various complexities of the Android Kernel?
What is QMI, What is Fastboot, all these types of important Acronyms and Terms that are not known to the general joe schmoe.
Thanks

phragg said:
I feel that's a bit more specific question to be asked in the visionARY app thread located: http://forum.xda-developers.com/showthread.php?t=808514
--
In regards to my posting, is there a decent Guide or Bible that has the various complexities of the Android Kernel?
What is QMI, What is Fastboot, all these types of important Acronyms and Terms that are not known to the general joe schmoe.
Thanks
Click to expand...
Click to collapse
Your answer to my question was sooo unhelpful. Read that thread my question is posted there, and it has gone unanswered. I have also read most of the threads in general, app, and have done a search with no real clear answer.
So now you can either help me or give me some moar useless links.

haensgn said:
Your answer to my question was sooo unhelpful. Read that thread my question is posted there, and it has gone unanswered. I have also read most of the threads in general, app, and have done a search with no real clear answer.
So now you can either help me or give me some moar useless links.
Click to expand...
Click to collapse
Dont get upset

ok , l know !

can someone please help point me in the right direction to overclock my g2. i have read and read but havent been able to completely understnad too well. im a new member here but been lurking for a few months.

93pgt said:
can someone please help point me in the right direction to overclock my g2. i have read and read but havent been able to completely understnad too well. im a new member here but been lurking for a few months.
Click to expand...
Click to collapse
If you could tell me what part of the first post here
you dont under stand i can surely walk you through it.
pls tell if you have the temp. root yet and if you have the new ota

93pgt said:
can someone please help point me in the right direction to overclock my g2. i have read and read but havent been able to completely understnad too well. im a new member here but been lurking for a few months.
Click to expand...
Click to collapse
Take a look at this thread. Should help you get through it easily.

to tell you the truth i was afraid to root my cliq because i didnt want to brick the phone, so no i havent temp rooted yet. i have the new ota. with the temp root if i shut my my off or it dies will it revert back to stoc because of the backup installed
edit. i downloaded visionary about 5 minutes ago so i did the 1 click root.

First off, its not a backup. Secondly, if you reboot you'll clear the cache and will have to re-root. Its temp, so you won't brick your phone.
Sent from my T-Mobile G2 using Tapatalk

To all the Mods and people in charge...

Could i get an answer to this form the Mods and/or people in charge, i posted this over at the Galaxy Tab forum and i have not gotten an answer yet:
Is anyone else able to access the following link: http://forum.xda-developers.com/show...=876178&page=7, its the thread on [HOW TO] Use SIM from Vibrant in T-Mobile TAB! EDGE + Voice with ... i was able to access it in the past but i cant access it anymore, i get the following message:
adinis78, you do not have permission to access this page. This could be due to one of several reasons:
1. Your user account may not have sufficient privileges to access this page. Are you trying to edit someone else's post, access administrative features or some other privileged system?
2. If you are trying to post, the administrator may have disabled your account, or it may be awaiting activation.

adinis78 said:
Could i get an answer to this form the Mods and/or people in charge, i posted this over at the Galaxy Tab forum and i have not gotten an answer yet:
Is anyone else able to access the following link: http://forum.xda-developers.com/show...=876178&page=7, its the thread on [HOW TO] Use SIM from Vibrant in T-Mobile TAB! EDGE + Voice with ... i was able to access it in the past but i cant access it anymore, i get the following message:
adinis78, you do not have permission to access this page. This could be due to one of several reasons:
1. Your user account may not have sufficient privileges to access this page. Are you trying to edit someone else's post, access administrative features or some other privileged system?
2. If you are trying to post, the administrator may have disabled your account, or it may be awaiting activation.
Click to expand...
Click to collapse
That thread had to be removed per the forum rules, specifically those regarding rule 9, as that thread was telling people how to overwrite the IMEI on a device.
Regards
Pulser

I see, it is a shame because that info did help a lot of people.
Sent from my GT-P1000 using XDA App

I understand, as the info was useful, but the legalities of the IMEI tampering are clear, and it's not something we can host, per rule 9.

I am all for rules and enforcing them, but if it wasnt for that info a lot of us t-mobile customers would not be able to use the tab they way it was intended,as a phone. But nothing can be done now but i am glad i found it before it was too late.
But one thing though, there are other threads about changing IMEI and stuff but they are still out there, so i believe it should be the same for everyone.
Not trying to be a snitch or anything lol
Sent from my GT-P1000 using XDA App

adinis78 said:
I am all for rules and enforcing them, but if it wasnt for that info a lot of us t-mobile customers would not be able to use the tab they way it was intended,as a phone. But nothing can be done now but i am glad i found it before it was too late.
But one thing though, there are other threads about changing IMEI and stuff but they are still out there, so i believe it should be the same for everyone.
Not trying to be a snitch or anything lol
Sent from my GT-P1000 using XDA App
Click to expand...
Click to collapse
Well... If you fancy the job of looking through 500,000 threads, be my guest and report them We can only act on what we find or get reported to us, as there's too much otherwise.
We know where you're coming from, but the legal situation is clear.

lol thanks for offer but im good. so if tmo would have gotten a look they could have involved lawyers?
Sent from my GT-P1000 using XDA App

I don't know specifics of this case, but the changing of the IMEI in general is illegal under communications laws. That's the issue here.

[Q] need helps

i want to know how do i do to build a kernel for my htc desire, and ov/uc please thx

Try the Q&A section, where this should've been posted. Maybe you shouldn't be cooking kernels when you can't even manage to read forumpolicies

lol everyone learns and i want to learn how to make it just it

Alkan2 said:
lol everyone learns and i want to learn how to make it just it
Click to expand...
Click to collapse
There is a q&a section on this forum, try there. This thread will probably soon be locked down once mods found out about it and most importantly, you won't get any help here.

hello noob!
http://www.youtube.com/watch?v=JmvCpR45LKA&

Someone needs to take that ****e video off YouTube as it's harsh. How are we meant to build a community if people just shoot n00bs down before they know anything??

EddyOS said:
Someone needs to take that ****e video off YouTube as it's harsh. How are we meant to build a community if people just shoot n00bs down before they know anything??
Click to expand...
Click to collapse
Don't wanna b adding too much to this thread but agree 1000 times with this comment...if it wasn't for noob threads I'd still be stuck with stock rubbish
Sent from my HTC Desire using XDA App

This thread -> LOL

bailz2506 said:
Don't wanna b adding too much to this thread but agree 1000 times with this comment...if it wasn't for noob threads I'd still be stuck with stock rubbish
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
I agree noob threads are great, they helped me immensely.. but the android development thread is there for a specific reason and so is the q&a thread
Sent from my HTC Desire using XDA App

I've been noticing the increase of stupid questions for a while but more importantly, I am getting fed up with the aggressive nature of some of the users. So people post in the wrong section, move post with warning, end of.
Also if the ROMS were cross posted to FAQ by default then more people would end up there instead of using the search to find the ROM title and ending up at the DEV thread.
xda is getting a bad rep for their mods and i'm not surprised. . . .

Alkan2 said:
i want to know how do i do to build a kernel for my htc desire, and ov/uc please thx
Click to expand...
Click to collapse
Returning to the original question.
The prerequisites for rolling your own kernel are:
- A linux system
- Terminal Know-how
- A synched GIT (such as the Bravo CM7 branch)
- Patience
That is just for building the stock kernel.
The additional prerequisites for changing stuff:
- A text editor
- A set of OC/UV values (such as Eviolett's)
- Experience in the linux terminal - more than for just compiling the stock kernel.
It doesn't seem like a lot of work - Sync the GIT, chuck in a few values, and build it. In reality, however, there is a stack of other stuff to do. I have a fairly good knowledge of the linux terminal, but still spent a stack more time getting everything ready than I wanted to (hours, in fact).
As motivated as you may be, it ain't a walk in the park, even with a detailed set of instructions. Stuff is going to go wrong, and a lot of the time, problems differ from those prescribed in the instructions.
Having been there, done that (or more accurately, failed to do that), this is just my two cents.
EDIT: Just to clarify, I failed miserably.

Bradshort said:
Also if the ROMS were cross posted to FAQ by default then more people would end up there instead of using the search to find the ROM title and ending up at the DEV thread.
Click to expand...
Click to collapse
Nice idea but look at Robo's "RCMix S v2.0 Evolutionary Sense" thread" it has a separate RCMix Guide/Tutorial/FAQ + 2 irc channels now have a look through the 12000 odd posts in that thread maybe 50% are total spam by people who don't understand how a forum works, fail to do any independent research but expect someone to hold their hand and explain everything slowly to them. I don't condone it but i fully understand the reaction a lot of "dumb" superfluous posts get

This. Simple fact is most people are incredibly lazy and thinking that devs are here to answer their every stupid question.

Terepin said:
This. Simple fact is most people are incredibly lazy and thinking that devs are here to answer their every stupid question.
Click to expand...
Click to collapse
Must agree.. I spent probably 10+ hours researching before I flashed my first ROM..
Sent from my HTC Desire using XDA App

I totally agree with fllash. It looks easy, but it certainly isn't.
Just start with downloading a copy of Ubuntu, version 10.04 and up will do just fine.
Why Ubuntu? Well, if you're only starting out with Linux and the more advanced topics such as compiling your own kernel, you'll need all the help you can get. XDA is a great community with a lot of information to be found, but it sure won't cover all the questions you'll have, so you might want to search trough the Ubuntu forums etc., as they might have more specific answers to your questions. There are also numerous books about starting with Linux, so you might want to check those out as well.
When you got a nice grip on working in Linux and the terminal, it's time to get busy programming!
If you're not a programmer already, you might want to start with Java. (Maybe write a little Android program? That way you'll also learn how Android works)
The Linux kernel is written in C and that might be a bit harsh to start out with. However, if you feel confident enough (or if you have programming skills already), go get yourself a book about programming in C, search some tutorials and start off writing some easy and silly programs, just to get a good grip on the language.
When you feel like you got a good grip on programming in C, feel free to download a kernel which is already compatible with the HTC Desire, one from CM or one from Thalamus (from Oxygen ROM) and take a look at the source code. Try to understand what makes it tick. Please note, that these kenels are for AOSP ROM's only! If you want a HTC Sense compatible kernel, go get the source from HTC which you can find here: http://developer.htc.com
By the time you got this far, it's only a piece of cake to compile and install. (Compiling and installing really isn't the hardest part about all this, so you'll manage to find your way out of this one)
Right now, you're probably thinking: "Is this all necessary? I just want my own kernel.." Well, yeah, it kinda is. You just can't follow a tutorial and end up with a kernel which is going to be great. There are going to be bugs, you're going to have problems, nothing will work from the first try.
Maintaining a kernel is hard work and requires a lot of knowledge in order to do a proper job.
Also, take a look at http://developer.android.com/. Knowing how Android works is kinda a requirement as well (at least, I consider it to be a requirement).
Oh, and for the record, please post in the correct forums next time. There's a Q&A section where you can search for, or ask questions. I understand that this is a dev-related question and you might have figured that the dev section would do fine, but unfortunately, it doesn't.
Okay? Well, happy learning! Don't let other forum members or some tough luck get you down.

[Q] NEED HELP. Where is the modified verison of DriveLink I am hearing about????

Hey guy's I recently got the XAV-701HD mirrorlink unit for my truck. The driveLink app is beyond horrible. I read a post from a guy on the reviews section. Here it is
It's a shame that a developer outside of Samsung had to modify this app to make it what it should have been. If anyone reads this review, please know that their is a modified version of drive link. I currently have it on my phone and it works great on my Sony XAV-701HD head unit. I am able to use Pandora and all apps including Netflix. I can load all shortcuts to my home screen and they stay, the annoying warning message is removed, and the app works flawlessly and it is still in development with users reading at xda developers. Make sure your head unit is up to date on the firmware, if you want apps to work while driving, the unit must have the video bypass simply by grounding your parking brake wire. Once you uninstall Samsung's crappy version and install the new version, you will see a whole new world on your unit. I recommend installing button saviour to your phone and using Nova Launcher. Check out all of the videos on YouTube. I am now a happy camper but not with Samsung.
He raves about how awesome this app is but doesnt tell anywhere the damn name or where it is. Does anyone know this and can direct me to where it is? I need it asap. THANKS

I think I found a thread dedicated to it here
http://forum.xda-developers.com/showthread.php?t=1951960&page=17
But I cant post in it. I just need to know where and how to download the modified version, and Do I need to have my phone cracked or unlocked or what have you? Id rather not do that. someone let me know.

luremin said:
I think I found a thread dedicated to it here
http://forum.xda-developers.com/showthread.php?t=1951960&page=17
But I cant post in it. I just need to know where and how to download the modified version, and Do I need to have my phone cracked or unlocked or what have you? Id rather not do that. someone let me know.
Click to expand...
Click to collapse
The link is right there in the OP.
http://www.mediafire.com/?25xw30a5447yo96
According to the OP, it also messes up data on CDMA SGS3's. Of which the Sprint S3 is one.

Man posting anything in this forum is really invloved w/ all these restrictions...
Forgive my ignorance. But what data does it mess up? I saw this on youtube it wont let me type the damn link but its video g1rnm5Cd2ug
search "Drivelink full mirroring"
and it seems this guy is using it w/ the s3.
thank you for the help.

luremin said:
Man posting anything in this forum is really invloved w/ all these restrictions...
Forgive my ignorance. But what data does it mess up? I saw this on youtube it wont let me type the damn link but its video g1rnm5Cd2ug
search "Drivelink full mirroring"
and it seems this guy is using it w/ the s3.
thank you for the help.
Click to expand...
Click to collapse
Data as in mobile network.

CNexus said:
Data as in mobile network.
Click to expand...
Click to collapse
Might be a dumb question again but what would it mess up in lamens terms? like I wont get cell signal etc? Or it will totally F the phone up?. And will it do this by just installing it?

luremin said:
Might be a dumb question again but what would it mess up in lamens terms? like I wont get cell signal etc? Or it will totally F the phone up?. And will it do this by just installing it?
Click to expand...
Click to collapse
I think what they mean is that it will just kill your signal while in use, but not permanently
And I don't know much else about the specifics, let me help you rack up some quick 10 posts here and then you can go ask in that thread

Please read forum rules before posting
Questions and help issues go in Q&A and help sections
Thread moved
Thank you for your cooperation
Friendly Neighborhood Moderator

CNexus said:
I think what they mean is that it will just kill your signal while in use, but not permanently
And I don't know much else about the specifics, let me help you rack up some quick 10 posts here and then you can go ask in that thread
Click to expand...
Click to collapse
Ah damn I defiantly dont want that, that wuld defeat the purpose of the NAV on the mirrorlink function. Thanks for the rack up for this silly rule lol.

luremin said:
Ah damn I defiantly dont want that, that wuld defeat the purpose of the NAV on the mirrorlink function. Thanks for the rack up for this silly rule lol.
Click to expand...
Click to collapse
It's too limit the amount of spam by some new users. They tend to post in the dev section when they shouldn't, making question threads or things that should go in general
So that's where that rule comes from :thumbup:
Anyway, everything else good? Latest modem and all?

Possible? broke lcd, unlock PIN from PC

Hey guys! My Galaxy s3 i747 from At&t has the lcd broken, I want to extract my information but since I do not have an LCD, I cannot input my pin so that the computer recognizes the device. Is there ANYTHING i can do? bypass the lockscreen from the PC to access the folders on android and recover my docs, or input the PIN from some sort of command, or screencast to succesfuly bypass this only barrier to get my pictures that are the most important part.

Try scrolling down a few posts

jde984 said:
Try scrolling down a few posts
Click to expand...
Click to collapse
I will try that which helps, but the problem is that I had keepsafe app which hides pictures and documents which are really hidden folders. Which a normal backup I think would not back up, there are documents therewhich are of extreme value. That is why I am looking for a way to access the phone.
I tried screencasting but since it is not in debug mode, i guess it doesnt appear in my computer for the cast to access it.thanks

I saw a post someone saying that people don't use the search enough but a way to back up data.. The way it works from reading it was if you are rooted. I have a question. does any part of your screen work or is it just a big blob of color**. also I stopped rooting and modding my phone after getting a good one due to bugs in custom roms. Having stock allows me to call Samsung and ***** and rage and have support. Don't get me wrong the modding community is great and I respect that. But my phone is pretty much my work it has to work how it was sold to me.
I hope there is a way to allow you to fix it yourself with out sending it to Samsung. Or having to pay top dollar for your data.
also search on the internet has become to the point of hopeless, most the time you have to word it right or know the tech term to get the answer easy. I feel your pain and respect the fact you had the guts to ask for help.

Yopkin1 said:
I saw a post someone saying that people don't use the search enough but a way to back up data.. The way it works from reading it was if you are rooted. I have a question. does any part of your screen work or is it just a big blob of color**. also I stopped rooting and modding my phone after getting a good one due to bugs in custom roms. Having stock allows me to call Samsung and ***** and rage and have support. Don't get me wrong the modding community is great and I respect that. But my phone is pretty much my work it has to work how it was sold to me.
I hope there is a way to allow you to fix it yourself with out sending it to Samsung. Or having to pay top dollar for your data.
also search on the internet has become to the point of hopeless, most the time you have to word it right or know the tech term to get the answer easy. I feel your pain and respect the fact you had the guts to ask for help.
Click to expand...
Click to collapse
My galaxy is actually rooted, i have searched for this and sincerely have not found a solution, i was looking for another galaxy s3 in the family or friends to temporarily use their screen and input the passcode, for now it is my only option. But i habe yet found nobody with this phone model
My lcd does not work completely, the glass and lcd broke.
I still look for the solution, i do not wait for it, but I kindly ask if anyone knows something i have not seen or found

Please read forum rules before posting
Questions and help issues go in Q&A and Help section
Thread moved
Thank you for your cooperation
Friendly Neighborhood Moderator

johnfortis said:
My galaxy is actually rooted, i have searched for this and sincerely have not found a solution, i was looking for another galaxy s3 in the family or friends to temporarily use their screen and input the passcode, for now it is my only option. But i habe yet found nobody with this phone model
My lcd does not work completely, the glass and lcd broke.
I still look for the solution, i do not wait for it, but I kindly ask if anyone knows something i have not seen or found
Click to expand...
Click to collapse
Couldn't you Odin cwm recovery of you don't already have it and pull via adb?
There is a guide for doing it via backup image in twrp
Sent from my SAMSUNG-SGH-I747 using xda app-developers app