Hi guys,
first of all thanks to all ROM builders, you own and make our phones happy!
I was wondering how your do the process of serving us those ROMs, so:
* the ROM contains what in GNU/Linux is defined as "distribution"?
* you don't recompile the kernel?
* i red the kitchen stuff at chef central and in the development section tutorial,
is it necessary to have it or its purpose is only to ease a ROM editing?
ok, these are my first questions ;-)... i'd really like to build a ROM of mine but
what stops me is the documentation and the missing part of it (e.g., safe ROM
testing (how do you test your ROMs under development?), build.prop stuff
(have you got a reference for all that variables?), ...).
Cheers from a newbie ,
ff0000.it
Related
Dear experts,
like many ppl, I am new to Android Development, and would be able to cook my own rom with amazing home-made features before the end of the week... and I want it to be easy, funny, and eventually Fast....
... Indeed, I don't want all of this, so I'll try to be realistic in my incoming questions and beg for your indulgence if some things sound stupid / inexact / already documented and so on : I have performed a long search process before I decided to post here and would not ask it otherwise.
So, first, here's what I have know about android:
- Android Architecture (various layers)
- Android + java programming (beginner with both but skilled with general OOP and smartphone -iPhone- programming)
- Rom flasing process : rooting, bootloader / recovery flashing , using adb, filesystem of a ROM
- Android official source building (from git repository) and patch apply.
- Basic cooking without any source code modification: use of dsixda's kitchen with xda members' home-made roms mainly
Then, the material I am working with :
- Max OS 10.6.5
- A HTC - Tattoo : rooted, with nandroid and busybox installed (also have an available HTC - Hero)
- adb 1.0.26
- HTC Android Kitchen 0.106 - by dsixda
- Android official source from http://android.git.kernel.org/
Now, what I don't know about is advanced cooking... I read a lot about ppl wondering the same, and generally there was no basic answers (not to mention guide/tutorials).
Since I will surely be the nth to ask this, let's try to ask a specific question.
I downloaded from Android github a patch I am very interested in. This patch applies on the framework and does not impact any other layer (especially not the kernel nor the hardware related libs). After building the source, I thus get a framework.jar I would like to replace some target framework.jar with .
I was quite sure it was not very bright to do such with a custom ROM, even a quite standard FroYo-based one, since there was little chance that such a cooked-rom used a virgin framework taken as-it from android github. But I tried anyway with some of the FroYo-based roms taken from the xda list for my tattoo device. I basicely replaced the framework.jar with mine.
... and indeed, it failed : I kept getting stuck at the boot screen everytime I do such.
So.... I am trying to understand what I do wrong.
- I am quite sure I miss some signing process, but although I read many threads about such a signing about apk files, I did not manage to figure out how to do this with frameworks / jar files. Could someone bring me some light about this?
- Provided the signing is not the (only) problem here, could someone explain where / why I am wrong?
- Eventually, since I did not manage to find full source for a FroYo-based (running) cooked rom , do you know of such a source repository I could work with instead of working with android official sources (including the framework java files + compatible with HTC-tattoo / HTC-hero if possible)?
Thanks for all of you for reading until here, whatever your answers (or silence) may be.
And thanks in advance to those who may have some answers or any constructive criticism.
Roger_Rabbit
--------------------------
An old fashioned rabbit
I Am INTERESTEd IN MAKING roms for defy...i just dunno d procedure
how to make custom.zip and update.zip which can be flash only in custom recovery???
how to edit apk files and tools needed to make it work.???
PLZZ help me out guys....seriously want to build roms for defy....
me too! i was a symbian cooker and now I would make my own rom for defy...but I don't know what tool to use
im not a developer myself but from what i understand, for our phone we can make 2 kinds of roms:
-aosp (android open source project) like cm7, miui and its variants. For this you need to know how to code, compile and debug the android os.
-roms based off stock roms like ms2 ginger etc. For this type you dont have as much flexibly as aosp roms as you dont have source code and this is more or less like cooked roms on wm or symbian.
As for guides on how to get started go over to the main android section in xda. They are a good number of guides if you search properly
http://forum.xda-developers.com/showthread.php?t=1441844
double thread...
Hey guys,
so this is applicable to all devices and its android specific therefore I think this is the best place to ask these question/s. I learned coding with Python for a few months last year and really enjoyed it. Now I am thinking since I have an android phone that is claimed by most "unbrickable" and I am probably stuck with it for another year I decided to learn android programming and contribute to this awesome community and hopefully make my phone awesome myself. Before I can do all that I have a few questions. Most of the development guides I saw after google searching, referred to how to create apps ( now I know there are guides to creating roms here). If I learn with those guides how to make apps will it be a similar process when I wan't to make custom roms? Also how to start? Start with Java SDK, with eclipse? Point to some guides plox
early thanks
There are guides for building apps... and guides for building ROMs... but AFAIK, guides for customising ROMs don't really exist... ROM customisations are generally just done following the API or using someone's work as a reference point....
craigacgomez said:
There are guides for building apps... and guides for building ROMs... but AFAIK, guides for customising ROMs don't really exist... ROM customisations are generally just done following the API or using someone's work as a reference point....
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Click to collapse
I think I worded that wrong. I know there are guides for building apps and building roms but I was asking If I use one of those guides to build app + learn to build app using a book or something will it help me build roms later? And for the custom rom thing, I meant like theres hellfire ics cm9 then theres eaglesblood ics cm9 for same device but by different people so I when I said custom rom I mean like my own ics cm9. but anyway thanks for your answer.
First and last bump
Making ROM's is different then making apps, while the skills you learn using Eclipse and Java JDK will only teach you Java, XML and ADB at most, when making ROM's you need to know many different things. While you can make custom ROM's with little programming experience to be a true master of making custom ROM's you need to know Java and XML, for modifying and creating your own custom apps you can include in your ROM, C and C++ for tweaking the kernel to truly optimize performance, Shell for creating scripts to automate tasks and performing other functions in your ROM, Photoshop/GIMP for image editing and creation in order to customize the look of your ROM, as well as patience to debug any problems you may run into and a couple other skills as well.
If you want to learn how to compile CM9 check out these guides:
[TUTORIAL]Setting up and compiling CM9/CM10 from source
Galaxy Nexus (GSM): Compile CyanogenMod 9 (Linux) It's for the Galaxy Nexus but it's still a very good place to start with to learn how to compile CM9 from source.
For learning basic customization of ROM's check out these great videos:
Let me know if you still have questions .
shimp208 said:
Making ROM's is different then making apps, while the skills you learn using Eclipse and Java JDK will only teach you Java, XML and ADB at most, when making ROM's you need to know many different things. While you can make custom ROM's with little programming experience to be a true master of making custom ROM's you need to know Java and XML, for modifying and creating your own custom apps you can include in your ROM, C and C++ for tweaking the kernel to truly optimize performance, Shell for creating scripts to automate tasks and performing other functions in your ROM, Photoshop/GIMP for image editing and creation in order to customize the look of your ROM, as well as patience to debug any problems you may run into and a couple other skills as well.
Okay that makes sense. So if I learn to make apps since thats what most guides are, I will learn to work with JDK and XML but creating ROMs requires much more knowledge. I am okay with just being able to compile source codes/porting roms from similar devices and what not. I am pretty decent with Photoshop so thats a win Thank you sir
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Click to collapse
Hi,
I wanted to ask this in other subforum, but this is my first post and I don't have permission there. Do you have a guide to recommend for creating custom roms?
I know a lot about Linux, I can compile kernels, patch, I know C a little. I programmed couple of Android apps, in Java and Go, so I guess I have some basic knowledge.
What do you guys do, with what source do you start? Is it a stock android source but you modify kernel and modules or you need first to find exact source for that phone?
For example, I own a Lenovo A560, and would like to try build custom rom for it. What would be the first steps?
Thanks,
Milan
Hey guys . I'm new to Android development...but i have a good idea about developing a custom rom and kernel using ubuntu..
But one day i was thinking that,
everyone who are interested in rom development goes through the AOSP website and tries it. And atlast after so many confusions and so many new learnings they compile it..
Bug fixing and adding features is next job.... Let's keep it aside
My thought was to build a software using java or c++ , which will automatically compile the rom for any device according to the user's input.
The inputs are device's code name (eg:-hammerhead)
And type of os(lineage based or aosp based etc...)
In the background of this software, all the rom compiling codes, source downloading codes, setting up environment codes etc,.. will be feeded using c++ or java.
After getting inputs from the user via a simple interface, the process will start. Downloading source, choosing directory,compilation, and finally the flashable rom will be the output of this software which will be stored in the given directory folder...
What do u guys think about this. Will this work???
i also know there are many troubles making this software
Pls comment abt ur thought guys..
I also need help in this case..
My vote is for is for a interactive GUI for android kernel development. One to allow easy modification to the kernel source and compilation. Kinda like Link+ Kernel Ide for Eclipse but for android