By any chance could someone tell me the best way to make a rom, I have a droid 3 and really want to make a rom but I don't know where to start, thanks in advance
Sent from my DROID3 using XDA App
The best roms start with 3 eggs and little bit of milk to make them fluffy. Whisk briskly!
If you want to jump in, this is a good place to start http://source.android.com/source/index.html
If you just want to dip your toe in the water, then you could start with modding roms, such as adding/removing apks, theming, writing update scripts.
Find a rom and unzip it. Look inside, poke around. Don't be shy-take things apart. Peel back the layers until you find xml and png files. Then, put it all back together and see if you can get it to flash.
Thanks
Sent from my DROID3 using XDA App
thanks so much for the info!
If you download a rom and unzip it, there will be a META-INF folder- look in here- there will be some crypto certs and a com/google/android/ folder which will have the updater-script and update-binary. The script is how the phone knows what to do with the rom. Read through the script and try to decipher what it is actually doing. It will be different for some roms. For example, the cyanogen roms will back up some system apps and replace them after flashing.
You might also come across a boot.img in the root directory of the rom. If you do, there will be some instructions in the updater-script for what to do with it.
Next look in the system/app directory- you'll find a bunch of apk files. These are actually in zip format, so you could unzip them to see what is inside.
A basic test would be to add or remove an apk to the system apps and then get it to flash. Of course you'll need a rooted phone and maybe jarsigner or signapk. Signing a rom will put all those CERT.RSA files back into the META-INF/ folder, which contain crypto hashes of all the files and the names of the files. Some recoveries will allow you to flash an unsigned rom, but you might as well figure out how to sign them. It's in the android link I posted earlier.
Good luck!
Thank you for that also this is very helpful I was kinda confused on where to start with aosp, also that the droid 3 has a locked bootloader
Sent from my DROID3 using XDA App
By any chance would you know how to do some theming? If I understand right it has to do with decompiling the framework-res and systemui apks, and replacing some pngs and xmls with others right?
Sent from my DROID3 using XDA App
I just got started with this so I am by no means an expert. I think you'll want to start by deodexing a rom so that you can make changes to the res, xml, etc. I think most stock apps come as a two part package- an .apk file and an .odex file, both with the same names. Find a stock app and look in the framework and app folders. De-odex-ing takes the odex file, de-compiles it, and then recompiles it into a classes.dex file that is put back into the apk or jar file. This configuration will should allow you to make changes without having to compile the rom from scratch... at least that is my understanding.
Find an apk that doesn't have an odex file and look for the classes.dex file inside. Then take a peak in the res folder in the apk. In the res folder you'll find all sorts of xml and png files.
To get started with decompiling, you'll want baksmali http://code.google.com/p/smali/wiki/DeodexInstructions
Take a look at the issues. JesusFreke wrote some interesting comments in issue 61.
I think there are a few other packages that will do the same thing, and there are certainly a few scripts that will work too.
I ran into some issues with deodexing honeycomb- I outlined the process here http://forum.xda-developers.com/showthread.php?t=1324653.
This is also a good source http://wiki.sdx-developers.com/index.php/How_to_deodex_a_ROM
Good info, thanks.
thank you you have been extremely helpful, im gonna try to get my rom out by sometime this week thank you
I just did some mini-theming. I have an ASUS Transformer- the stock rom has it's own back/menu/home buttons. I wanted a more complete honeycomb look, so I grabbed the stock honeycomb versions from a xoom rom, and added them into my deodexed stock ASUS SystemUI.apk. Oddly enough, if I signed the apk, it wouldn't work, but if I left it unsigned, it works fine.
thats odd, i thought you needed to sign it for it to work
Related
This is a very basic guide to beginning themeing. It is not meant to be all-inclusive, just some simple steps that can be taken to make your own custom theme fairly easily. This guide should allow anyone to be able to grab images they like from any ROM and incorporate them into their own.
I SUGGEST YOU ALWAYS MAKE A BACKUP OF ANY FILE BEFORE YOU THEME IT AND NANDROID FIRST BEFORE FLASHING
Here is a basic overview of changing images in an apk:
1. Get your base file to theme – framework-res.apk, com.htc.resources.apk, phone.apk ect.
2. “Open” apk archive with 7-zip (don’t unzip!) and drag and drop the new images into the appropriate folder.
3. Flash new file.
Now some details:
1. The first step is to obtain the file you are going to theme. The file you are themeing ( i.e. going to flash to your phone) must come from the ROM you are currently running. Always use files from your current ROM as a base, however the images you want to change can come from other ROMs, or you can edit existing ones or make your own from scratch. You can obtain your theme base through an ADB pull of the files from your phone, or simply downloading the ROM zip file and extracting the files you need.
2. Now that you have the file to theme, don’t touch it! OK, more specifically, you won’t unzip or do anything to this file except “open” it with 7-zip (unless this is a market app, but more on that later). You are going to drag and drop the new icons into this file by “opening” it and navigating to the appropriate folder. The images you want to change are stored in the apk under /res/drawable-hdpi. Once you have your new icons from other sources, open your base file and navigate to this folder and drop them in.
3. Now you can flash this new file. I have provided empty zip files that you can place your themed files into and flash in recovery. Place your framework-res.apk and/or com.htc.resources.apk into the /system/framework folder located in the zip file provided. Now highlight the META-INF and system folders and zip them up. You can now place this file on the root of your SD card and flash. System apps can be placed under /system/app in the zip file.
Some more info on common themeable files:
Framework-res.apk – this is the meat and potatoes of a theme. On an AOSP ROM it will contain almost everything you want to theme aside from individual apps themselves. Sense ROMs have another file com.htc.resources.apk, as well as framework-res.apk. Both of these files are located in a ROM under /system/framework.
System apps: These apps come packaged in a ROM under /system/apps. They can be themed in the same manner as a framework apk. Some of these apps include Gmail, browser, camera, ect. Place them in your flashable zip under the folder /system/app.
Market apps: These apps are downloaded from the market and are can be pulled from your phone from /data/app. These files require a bit more to theme. They don’t share the same signature as the system apps and you must resign them using a program such as apkmanger. Place them in your flashable zip under /data/app.
If there are any errors, or if anyone has suggestions please let me know. I may have over looked some details, ect.
Thanks to everyone on XDA who has shared their knowledge and made this a great community!
Thanks that will be helpful
Sent from my PC36100 using XDA App
so using this guide we can pull parts and what not from other elements of themes we like and create our own framework to push back? Also, based on what you have, shouldn't it be easy to put this up on bid for hire (?) website to create a program to automate that?
xlGmanlx said:
so using this guide we can pull parts and what not from other elements of themes we like and create our own framework to push back? Also, based on what you have, shouldn't it be easy to put this up on bid for hire (?) website to create a program to automate that?
Click to expand...
Click to collapse
Yes the idea of this guide was to help people pick and choose icons they like in other ROMs and add it to their own. I'm not sure what bid for hire is?
its a website where you can load your requirements and folks can bid to do your work
linky
nukedukem said:
Yes the idea of this guide was to help people pick and choose icons they like in other ROMs and add it to their own. I'm not sure what bid for hire is?
Click to expand...
Click to collapse
xlGmanlx said:
its a website where you can load your requirements and folks can bid to do your work
linky
Click to expand...
Click to collapse
Interesting. Didn't know anything like this existed.
Sent from my EVO (CM6.1) using XDA App
Thank you, thank you!!!! I've been looking for something like this for a while.
evolishesh said:
Thank you, thank you!!!! I've been looking for something like this for a while.
Click to expand...
Click to collapse
No prob. Let me know if it works for you.
I couldn't get the auto signing to work, but the manual way of doing it worked.
Hmm, I got a boot loop on first try and doing this. Does that mean something went wrong with the signing, or that what I created for the theme was wrong? I used the empty .zip folder and re-zipped it, so I don't think that is the issue.
JasonK75 said:
Hmm, I got a boot loop on first try and doing this. Does that mean something went wrong with the signing, or that what I created for the theme was wrong? I used the empty .zip folder and re-zipped it, so I don't think that is the issue.
Click to expand...
Click to collapse
The signing should be ok. If you are using Amon_ra recovery it wont let you flash an unsigned zip I believe. Are you on sense or AOSP? Are you editing images or just copying from other ROMs?
What you might want to do is just create a simple test file. Change just one image and then flash that. That should let you know that your process is correct.
I using Amon Ra and using AOSP. I was moving some items out of a sense ROM so I guess that is where I might have went wrong. I think I'll take your advice and move just a single image and see how that works for me. Thanks!
I tried again this time I ended up stuck at the EVO white screen. I'm guessing it doesn't like the sense part I'm trying to throw in there. I'll have to try again with a AOSP theme instead.
Sent from my EVO (CM6.1.1) using XDA App
A couple things to look out for when swapping sense/CM icons - some file names are slightly different between sense and AOSP. Rename any sense icons to their AOSP counterparts and vice versa. Also, double check the image size of the icon is the same in both, i.e. 70x70 pixels, ect. and make sure you are not adding images that don't exist normally in the framework. For example there wont be any 4G icons in CM framework.
Also, make sure you aren't unzipping the new framework-res.apk you want to theme and flash, or trying to resign it. Only sign the flashable zip, not the individual files inside. The only thing you want to do with the framework-res.apk you will package and flash is open (not unzip) with 7-zip and navigate to the res/drawable-hdpi folder so you can drag and drop the new icons into it, overwriting the old.
I hope that helps!
How important is it to re-sign? I have modified the Framework and Resources apks with 7zip by switching images out. I have also modified the Rosie.apk. I put everything back where it was supposed to go, backed out of 7-zip and flashed. I have never had an issue with it, nor have I re-signed it. Just wondering.
spence341 said:
How important is it to re-sign? I have modified the Framework and Resources apks with 7zip by switching images out. I have also modified the Rosie.apk. I put everything back where it was supposed to go, backed out of 7-zip and flashed. I have never had an issue with it, nor have I re-signed it. Just wondering.
Click to expand...
Click to collapse
AFAIK if you are on clockwork recovery, I don't think it checks for signatures. I think Amon_ra requires a signed file to flash. I think it's just added protection against flashing any old junk. If you can flash in amon_ra without a signature and you don't have problems then I wouldn't worry about it. It's the signature of the framework-res.apk ( or com.htc.resources.apk) that's important. That's why you don't unzip it.
I think that
1.7.0.2 = yes
1.8 = no
nukedukem said:
AFAIK if you are on clockwork recovery, I don't think it checks for signatures. I think Amon_ra requires a signed file to flash. I think it's just added protection against flashing any old junk. If you can flash in amon_ra without a signature and you don't have problems then I wouldn't worry about it. It's the signature of the framework-res.apk ( or com.htc.resources.apk) that's important. That's why you don't unzip it.
Click to expand...
Click to collapse
nukedukem said:
A couple things to look out for when swapping sense/CM icons - some file names are slightly different between sense and AOSP. Rename any sense icons to their AOSP counterparts and vice versa. Also, double check the image size of the icon is the same in both, i.e. 70x70 pixels, ect. and make sure you are not adding images that don't exist normally in the framework. For example there wont be any 4G icons in CM framework.
Also, make sure you aren't unzipping the new framework-res.apk you want to theme and flash, or trying to resign it. Only sign the flashable zip, not the individual files inside. The only thing you want to do with the framework-res.apk you will package and flash is open (not unzip) with 7-zip and navigate to the res/drawable-hdpi folder so you can drag and drop the new icons into it, overwriting the old.
I hope that helps!
Click to expand...
Click to collapse
Thanks, any advice does help.
I did make sure the the icons I was swapping out were named the same thing in the CM ROM, but I didn't check the size of it at all.
I didn't unzip the famework-res.apk but instead just went into it with 7-Zip and dragged the icons into that. Then I backed out of 7-Zip so that it would save and close everything properly - know that does work because that is how I add the Fold transistions to the ROM - and then I put the famework-res.apk into the folder and zip it up per your instructions above. Then I manually sign it (still haven't been able to get the auto-signing to work) and then flash.
I'll have to try again moving a CM theme to the CM framework-res.apk and see if it is working. What I was attempting to do was take, from the Batman Theme for sense, the drop down notification shade with the Bat Icon and put it into the CM ROM. I don't know if you have time to try it yourself to see if it works, or if you get the same issues that I had.
Either way, thanks for the help! I know I'll get this theming down at some point!
nukedukem said:
No prob. Let me know if it works for you.
Click to expand...
Click to collapse
Hey buddy.
I’m stuck. I had to download and install Eclipse with the sdk plus java. I don’t know where to go from there. Every time I open the rom that I want to theme and get the framework.apk and edit the PNG’s , how do I go about saving them? Do I just used the same name as the old ones or I have to save them with a new name.
Or pm Me.
xlGmanlx said:
I think that
1.7.0.2 = yes
1.8 = no
Click to expand...
Click to collapse
So the new amon_ra doesn't require a signed file to flash? I'll make a note off that. Thanks.
JasonK75 said:
Thanks, any advice does help.
I did make sure the the icons I was swapping out were named the same thing in the CM ROM, but I didn't check the size of it at all.
I didn't unzip the famework-res.apk but instead just went into it with 7-Zip and dragged the icons into that. Then I backed out of 7-Zip so that it would save and close everything properly - know that does work because that is how I add the Fold transistions to the ROM - and then I put the famework-res.apk into the folder and zip it up per your instructions above. Then I manually sign it (still haven't been able to get the auto-signing to work) and then flash.
I'll have to try again moving a CM theme to the CM framework-res.apk and see if it is working. What I was attempting to do was take, from the Batman Theme for sense, the drop down notification shade with the Bat Icon and put it into the CM ROM. I don't know if you have time to try it yourself to see if it works, or if you get the same issues that I had.
Either way, thanks for the help! I know I'll get this theming down at some point!
Click to expand...
Click to collapse
OK I'll try and do what you are trying to do and see if it works...
evolishesh said:
Hey buddy.
I’m stuck. I had to download and install Eclipse with the sdk plus java. I don’t know where to go from there. Every time I open the rom that I want to theme and get the framework.apk and edit the PNG’s , how do I go about saving them? Do I just used the same name as the old ones or I have to save them with a new name.
Or pm Me.
Click to expand...
Click to collapse
So now you have an unzipped framewor-res.apk with a bunch of images. This framework should be the one that you want to take icons from. If not, start over with the ROM you want to copy images from. You will want to copy the images you want to put into another ROM so that you can dump them into the new framework-res.apk. After you figure out what icons you want to bring to your new framework, get a clean version of framework/com.htc from the ROM you are actually running - i.e. if you are running myn ROM on your phone, download the myn ROM and pull out the framework-res.apk or com.resources.apk that you are going to theme.
Now with this fresh clean framework you will "open" it with 7-zip to navigate to the /res/drawable-hdpi folder so you can now drag and drop the images you want to copy over into it. Then the close the 7zip window and your framework-res.apk is all set to flash. You don't need to rename if the file names are the same, you can just drag and drop and the files will be overwritten in the new framework.
Howdy all,
I am wanting to kno if there is anything special about editing certain system apps, do they all need to be signed with the same keys. i think i read this somewhere.
cause when i decompile the phone.apk then recompile with no changes / or with changes, signed it with autosigner or APK-Manager, it just FC's on the phone and i cant make sence of the logs...
oh and i tried pushing the file with adb and x10 mod tool, tried in the emulator, still no joys.
been googling for hours... and i feel i am searching for the wrong things...
Thanks in advance
Pvy.
you can use 7zip to browse the apk as an archive and replace png's and .9.png's inside the drawable folders.
you wouldn't have to resign the apk this way, but i would recommend zip-aligning the apk after you replace the png's.
i would also make sure you know how to work with .9.png's before replacing them. not doing .9.png's correctly will break the app.
I have edited the pngs there is no prob there I can put all the images in.
I am editing the xmls and the manifest... I tried drag and drop but it seems to break the apk...
Thanks tho.
Sent from my X10i using XDA App
Go ahead and compile with apk manager, say yes to 'is it a system apk?'.
Then open the new apk with 7zip and pull out the xmls, etc. you changed.
After that open the original apk w/7zip and drag in the compiled xmls along with your images.
That should work.
So I did this,
compiled phone.apk chose system app when it asked.
drag and dropped the 3 pngs I modded, and a few xml files, and the modded androidmanifest.xml to the original
Pushed it to my phone, rebooted...
But it wont install.
It appears the signing breaks.
Pvy
AyDee said:
Go ahead and compile with apk manager, say yes to 'is it a system apk?'.
Then open the new apk with 7zip and pull out the xmls, etc. you changed.
After that open the original apk w/7zip and drag in the compiled xmls along with your images.
That should work.
Click to expand...
Click to collapse
Sent from my X10i using XDA App
Changing default image
I wondered if anyone could help me out with this
Many thanks
pvyParts said:
So I did this,
compiled phone.apk chose system app when it asked.
drag and dropped the 3 pngs I modded, and a few xml files, and the modded androidmanifest.xml to the original
Click to expand...
Click to collapse
My suggestion is after doing this add the now modded original .apk into a flashable.zip and use xRecovery/FreeXperiaRecovery to install the app.
If you don't know how to make a flashable.zip just use 7zip to replace the phone.apk in a theme update.zip and delete any other folders/.apks that you don't want being reinstalled (framework-res etc.).
Not sure if this will work because I haven't tried this after modding .xml files, but it works after I make any other changes, even changing .9.pngs.
Best of luck, hope this works.
nope that didn't work either... took me a while but once i figured out the update.zip i got it going. and still no joy.
thanks heaps guys for all your help, i think i must have to compile from source or something silly like that...
I'll keep at it and let you all kno how i go...
Hello. I would like to know if anyone has an actual beginner's guide to CIQ removal. For a minute, there was a guide that didn't quite have all the bugs worked out of it, but it was removed. I've been trying to follow Krylon's thread on rootzwiki, but it seems to stop short of telling people how to actually recompile everything and push it back to the phone. It would be helpful and informative to be walked through this process once the CIQ files have been deleted from the decompressed classes.dex files and .xml manifest.
Thanks
Note: So far, I have figured out that autosmali can be used to smali the files back into a classes.dex file, which can be reincorporated into the associated .jar files using 7zip. Seems simple enough. However, the process of getting framework-res updated seems to be more complicated, and requires answering some questions about. Specifically: 1. Option 11 asks (a) Is this a system apk? (b) Aside from the signature, would you like to copy over any additional files that you didn't modify from the original apk in order to ensure least # of errors? I have answered "yes" to 1.(a) and "yes" to 1.(b), which told me to delete the .xml and the resources.arcs file from a temp directory before completing the compile. This whole process has left me with three modified files (framework.jar, android.policy.jar, and framework-res.apk (unsigned)). Now what do I do with them?
Note 2: Looks like I can sign the framework-res.apk file using option 12.
Once you are done modifying the files you need to either put them in an update.zip and flash or push them with adb to their respective folders.
As for someone giving a step by step I doubt that will happen. It seems like the ones that do know how to do alot of the modifications to roms, are pretty vague when they post how to's. Most of the time it seems like they just don't want to share the information. Why I don't know, but that is just my opinion. I am sure I will probably get flamed for saying this but again this is just my opinion.
You can search the forums and find most of the information here and there. Then you need to put it all together and hope it works.
My thought's would be to have a seperate area in the forum to post just Tips, Techniques and How To's. Then alot of the people that want to learn how to theme and build roms would have an better source to find their answers than having to search all the forums. Again just my .02 cents worth...
Hope no one is offended by this as that is not my intention.... XDA is a great source for information...
quick steps..
Decompile Framework.jar, delete the entire carrieriq dir and all it's contents, recompile.
delete /system/xbin/iqbridger
DONE
Makes the rest dead code.
tablador said:
Hello. I would like to know if anyone has an actual beginner's guide to CIQ removal. For a minute, there was a guide that didn't quite have all the bugs worked out of it, but it was removed. I've been trying to follow Krylon's thread on rootzwiki, but it seems to stop short of telling people how to actually recompile everything and push it back to the phone. It would be helpful and informative to be walked through this process once the CIQ files have been deleted from the decompressed classes.dex files and .xml manifest.
Thanks
Note: So far, I have figured out that autosmali can be used to smali the files back into a classes.dex file, which can be reincorporated into the associated .jar files using 7zip. Seems simple enough. However, the process of getting framework-res updated seems to be more complicated, and requires answering some questions about. Specifically: 1. Option 11 asks (a) Is this a system apk? (b) Aside from the signature, would you like to copy over any additional files that you didn't modify from the original apk in order to ensure least # of errors? I have answered "yes" to 1.(a) and "yes" to 1.(b), which told me to delete the .xml and the resources.arcs file from a temp directory before completing the compile. This whole process has left me with three modified files (framework.jar, android.policy.jar, and framework-res.apk (unsigned)). Now what do I do with them?
Note 2: Looks like I can sign the framework-res.apk file using option 12.
Click to expand...
Click to collapse
Don't use option 12.
NEVER SIGN A SYSTEM APK
krylon360 said:
Don't use option 12.
NEVER SIGN A SYSTEM APK
Click to expand...
Click to collapse
Thanks krylon for the quick fix.
If, for completeness, I wanted to put all of these modified files on my phone (unsigned), how would I do it? Last time I tried, I used a root file explorer and my phone started bootlooping immediately after placing framework-res.apk on the phone. Adb was not available, so I had to reflash in order to put the file back the way it was. I was thinking maybe to adp push the file instead of copying it with the explorer.
adb push then reboot.
but, it's best to do it as a fresh install.
Thanks, I will give that a try.
Followed these directions 3x, but when I boot up my phone with these changes, the Android System process stops responding every time i boot my phone. I can bypass the error message fine, though.
edit: Well, after reflashing it 2 more times with the exact same rom, it doesn't happen anymore. MEH, who knows?
One of Raver's ROMs did that too. I think it is a dependency to something you removed. It was fine on the ROM. One FC when you boot ROM and that was it.
Is it possible to take a ROM zip (AOKP, for example) and change around some of the pngs (in SystemUI.apk, for example) before it is installed?
I know how to make the changes I would want to do, and I have the pngs I would want to change; I just want to know if it's possible to do so prior to installation without any issues.
Anyone know?
If not, does anyone know if doing this might mess up my phone? I'd rather not brick my phone.
This is really interesting..
Even I am waiting for the answer :fingers-crossed:
Yea that should work fine. Just don't unzip the ROM. Leave it zipped and copy/paste in and out of it.
And once you flash the ROM, you can always make more PNG edits to SystemUI.apk, etc. and just cut and paste it into your phone using root explorer.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
For the most part, you can usually add/remove/edit individual files/apks inside a ROM zip as long as you're not messing with the folder structure too much. Just open up the updater-script in notepad++ and you can see how the ROM is actually being installed. It usually just extracts the system folder as a whole, so it's essentially oblivious to what's actually inside it.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Great, thanks for the input.
I've never made a ROM of my own, but I've done some APK theming. I'll have to give it a try. I'll post back with the results.
In this tutorial I will show you how to create your own T.W. rom using your GS3 and Root Explorer. There are many ways you can create a rom but not everyone has the time to sit at a computer every night. However, your phone is always on you and can find a few minutes here and there to create your own masterpiece.
For the sake of this tutorial, we will name our new rom "SLICK".
Here are a few things you will need...
1. The rom base from Scottsroms. I'm NOT talking about Cleanrom but the unmodified stock rooted rom.
2. Root Explorer.
3. Script Manager
4. Any mod you can flash or come up with on your own.
1. GET STARTED!
Download the base rom to your phones EXT-sdcard and extract it using Root Explorer. After it's extracted the new unziped rom will be located in /storage/sdcard0/SpeedSoftware/Extracted. The extracted rom is now your new base. At this point it would be a great idea to move it to your EXT-sdcard and create a new project folder for it and label the folder "Project SLICK". inside the folder is your rom. lets rename that rom "SLICK".
Lets open your new SLICK rom. You should have some folders...
BOOT IMAGE
DATA
META-INF
SYSTEM
3. THE SYSTEM FOLDER
/SYSTEM/APP
Most of your work will done in the System folder so lets open that up. This is the heart of your rom! There are many folders here but lets start with the app folder. This folder has every app installed in your rom. This is a good time to remove the bloat you don't want in your rom. Go ahead and delete the apk's you don't want or need.
/SYSTEM/BIN
Here you can speed up your system or make it more battery efficient by deleting things like "mpdecision" and things like that. Be careful what you delete though. In general you won't do much in here.
/SYSTEM/BUILD.PROP
Here you can change values or add values. The one value we are concerned with is "ro.build.display.id" This build property's value will be displayed in the end users settings menu under "about phone". So let's give this property the correct value "ro.build.display.id=SLICK ROM v1.0" The rest of the build properties you can do as you wish. Build.prop is simply a text file. You can use the text editor built into Root Explorer.
/SYSTEM/CSC
Open this file and you will see more files. Listed is "feature.xml". Here you can edit values for various items for texting and mms.
/SYSTEM/ETC
Here is where you will find a folder called "init.d". Located in this folder are various text files. The text files are scripts that are told to run when your phone boots. You can add or modify to the existing scripts or create a new text file.
So we went over a few of the basics of modding your new rom and molding it into something you can call your own but does it work??
4. TESTING YOUR NEW BASE.
So we have already modified our rom a considerable amount and should have a good solid base. Before we go any further we should really test things out first. If we did something wrong earlier we will at least have an idea where to look. So lets flash our new rom. Go to you EXT-sdcard and find our project folder. you should still have your SLICK file. Zip this file with Root Explorer. Make sure you have a good battery and a cool environment because it's going to take your GS3 about 30min of hard work to zip this file. When that is finally completed, flash your new rom located in /storage/sdcard0/SpeedSoftware/Archives. Flash it just like you would any other rom.
Test your new rom out on your GS3 and see how things are running. Check your existing modifications you did earlier. If everything looks good, we can continue modding. If not you will need to go back to your base to see where you went wrong. This is also a great time to check your init.d scripts. One way to do this is to download "Script manager" from the market and click on your init scripts to read there log. It will tell you if something went wrong.
If everything is looking good, we can continue modding...
5. THE MODS
So we have that nice clean base but what about all them mods in the roms we download and flash everyday? There are a few different ways we can do this and we will start with the easiest but first, do a nandroid backup of your new base. If one of your mods you perform next goes bad it's simply quicker to recover. Now, If you have flashable zips of some of the mods you like then you can flash them now and make sure they are working the way they should in your rom. Remember, just cause we have the d2vzw does not mean mods from the sprint or T-mobile won't work on our devices. Sometimes it's worth a try. It's all about which firmware they are on and what has changed with the firmware.
So we flashed a few mods but don't have everything we wanted. At this point you are left with only one option and that is to get on that PC of yours and learn to decompile a APK. I may touch on this subject later as it is a bit more involved for someone new to this sort of thing.
6. UNDERSTANDING THE FLASHABLE ZIP
The alternate method of a flashable zip is to extract your flashable using Root Explorer and picking it apart. For example we will use "Lean Kernel" and kill 2 topics with one stone. If you unzip the kernel you will see...
BOOT.IMG
META-INF
SYSTEM
As you can see there are some familiar files to us just like when we extracted our base rom in the beginning. Basically when you flash a mod like this or any flashable for that matter, it installs files into your rom in certain places. In this example we will be installing in BOOT.IMG and SYSTEM. But what? And what is that META-INF file for? Well this META-INF file is what tells your rom what files and what to do with those files. Inside META-INF is a text file called an "updater script".
Here is what it looks like...
Code:
show_progress(0.500000, 0);
mount("ext4", "EMMC", "/dev/block/mmcblk0p14", "/system");
package_extract_dir("system", "/system");
set_perm(0, 0, 0777, "/system/etc/init.d/00leanKernel");
unmount("/system");
assert(package_extract_file("boot.img", "/cache/boot.img"),
write_raw_image("/cache/boot.img", "/dev/block/mmcblk0p7"),
delete("/cache/boot.img"));
show_progress(0.100000, 0);
Line 2 shows it mounting the system so we can write to it.
Line 3 shows us extracting the entire directory of the system file in the flashable into the system file of our rom.
Line 4 shows we are setting permissions for one of the system files we just installed in the rom. In this case it is an INIT.D file.
Line 5 shows us returning the system to an un-writable state.
Line 6 shows we are now installing the other file called BOOT.IMG.
So we installed BOOT.IMG and the SYSTEM file. The BOOT.IMG file is usually only found in a rom or kernel zip so most of the time you won't see this file in a flashable but I wanted to use this as an example to show a bit about the kernel side of things.
Ok, so lets get back to the original files of this flashable zip. The updater script stated we installed a new system file into the rom so whats in there? If we open the SYSTEM file from our flashable with Root Explorer you will find a file hierarchy...
SYSTEM
-- ETC
--- INIT.D
---- "00LEANKERNEL"
-- LIB
--- MODULES
---- Listed here are a bunch of ".ko" modules and i'm not listing them all.
So whats the point of all this? Well lets say when we originally debloated our rom in the begining we could of included some of our flashable mods like a custom kernel before we zip the rom to test the base. So in this case we can manually install this kernel before we zip the base. We can take the BOOT.IMG from our extracted kernel and replace the BOOT.IMG in our extracted rom. We only need the files from the flashable so we need to copy and paste the "00LEANKERNEL" file from our flashable to our roms /system/etc/init.d folder. We can also take those ".ko" files from the flashable and dump those into the /system/lib/module folder and we are done. You have now manually installed a kernel into your base rom before you zipped it. Now when you zip your rom and flash it, your new base rom will boot with your custom kernel. Since we manually installed the kernel we don't need the META-INF file provides an auto install script for installing through recovery. Technically we could take all of our flashable mods, extract them, look at the file hierarchy and copy and paste the those files to our extracted base rom. That way we can zip our rom and test it with the mods right off the bat. You can really make things quicker this way and is in general the way to go.
I think it's rather important to fully understand a flashable zip. How it's built and how it completes it's task. It's used so often and makes mods so incredibly easy to install but it is also what installs our rom! One of the files we see when we open "slick" is a META-INF and there inside is the updater script to flash the rom. Again we are doing the same thing as we do with the flashable mod but this time we are installing a lot more files with a lot more permissions. It is the exact same thing as shown above just a bit more extensive.
7. PUT THE PIECES TOGETHER
Ok so we have our base rom running on our phone and possibly a few mods installed. We also have our extracted and debloated "slick" rom on the EXT-sdcard inside our project folder. The next part is rather easy if you understand how those flashable mods were installed. If you understand the whole flashable and its files, your better off just extracting them and then copy and paste them where they need to go. After you have all your mod files in place you can now zip your official "Slick" rom using Root Explorer of course. Prepare yourself for another 30 minutes for it to zip. After it's zipped your done. You have now created your first fully modded rom! However...
Lets say you don't get the whole flashable thing and or you had made some other changes to the rom while you were testing. Lets say you flashed some mods and created a few init.d scripts or the build.prop along the way. NO WORRIES! We can put the rom together another way. A lot of the mods you flash will install files in some usual areas of the rom like your Framework folder and such. Lets just say we don't know though. You can actually copy complete folders from the rom you are running right there and now and paste them into your extracted "Slick" base rom using Root Explorer. So you can take "/system/framework" from your currently running rom, copy it, and paste it in "/storage/EXT-sdcard/project folder/slick/system/framework". In short just take your copy of the framework file and put it in your extracted base and paste it. Root Explorer will then ask you if you want to replace this file and click yes. You have just transferred any modded file that might have been in framework to your extracted rom. Any folder you may think was modded, simply copy and paste it to your extracted base rom on your EXT-sdcard. Once you think you have it all the modded files transferred you can zip your new "Slick rom! Flash and enjoy!!
FINISHED
So we have now completed our own rom on the device itself. It's really not too difficult just a bit more time consuming with zipping and that. However, you may need to do a bit more research on how to decompile and recompile an APK. This is one of things that can really be a pain to setup. It's again the basics that will kill you. The whole PITA is not decompiling or making changes to a framework file, it's setting up the environment that sucked for me. You have to get the Java and files in order and all the little crap to get it to work. IMO, if you haven't decompiled an APK yet it's really not difficult at all. Like I said. It's the basics. I encourage you to learn this because it's so freakin easy after it's all setup and you will be able to do so much more with your rom. Once you get this APK thing down don't be afraid to take someone elses work and reverse engineer it. Try to figure out what that developer did to accomplish what he wanted. It's a great way to learn and thats what it's about.
I may add to this somewhere down the road but for now it's all I have. I hope this helped and motivated someone to create a rom and begin there journey to become developer someday! We can all use fresh ideas for development. There is so much more to come for Android so get your hands dirty and share!
Thanks guys!
Ha never really thought of doing this on the fly with my phone. Even though all the right stuff was sitting in my face thanks for opening my eyes razz1
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dincdoes.me said:
Ha never really thought of doing this on the fly with my phone. Even though all the right stuff was sitting in my face thanks for opening my eyes razz1
Sent from my SCH-I535 using Tapatalk 4 Beta
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It's another way. May not be the fastest way but it's another option. I also wanted to write this as a general rom creation and learning some basics. It's always the basics that will kill a project and motivation. I would like to see a complete newb to be able to complete a rom with this tutorial. Then I accomplished something. Going to have to finish this tomorrow though. It's taking longer than I thought lol.
Yea I mean I'm a newb at doing it from my phone if that counts =) .. What explorer do you like to use to repack the zips. I'm sure I'll try this method soon to play while bored at work. Rom tool box will help with boot animations, fonts and transition animations too take care thanks for giving our community some new skills I'm sure it will help out down the road.
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Thank you for this post. This will definitely get me to try and make my own ROM the way I like, also I might just learn some new stuff. Great post thanks again
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Nice tutorial.
It's a great way to show what can be done just from your phone.
:good:
Right on man. Been waiting for this. Thank you.
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dincdoes.me said:
Yea I mean I'm a newb at doing it from my phone if that counts =) .. What explorer do you like to use to repack the zips. I'm sure I'll try this method soon to play while bored at work. Rom tool box will help with boot animations, fonts and transition animations too take care thanks for giving our community some new skills I'm sure it will help out down the road.
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I use androzip man.
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More added
So would I make, say ROM manager a system app? Just copy the apk into the /System/App folder?
Evil Genius Jr. said:
So would I make, say ROM manager a system app? Just copy the apk into the /System/App folder?
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Yes, but not all apps you download from google play work in /system/app. Some want to be installed into /data/app. However /data/app doesn't exist till after the rom is booted. You would need to add the folder to your extracted rom and modify the updater script.
razz1 said:
Yes, but not all apps you download from google play work in /system/app. Some want to be installed into /data/app. However /data/app doesn't exist till after the rom is booted. You would need to add the folder to your extracted rom and modify the updater script.
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You are the fu**ing man razz1.
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That's about all I have for now. OP completed!:sly:
Hello. Ok so I created a ROM what I call MyTWGE (Tuchwiz Google Edition). Followed the instructions, unzipped the stock Verizon OS went into the -app- folder deleted all the Verizon, Samsung and Google apps (only the ones that are download able from Google Play). Replaced the stock launcher with the 5x6 version that I extracted from another zip, replaced the camera with the Google edition camera (download able from GP), replaced the keyboard with the Note2 keyboard (also unzipped from another zip). Looked around and deleted a few more files I found that were connected to some Samsung apps and zipped it up. Flashed the zip yesterday onto the phone and it's ALIVE working.
Thank you for your patience to write up all these instructions. I previously used TB to debloat my phone and that was it, learned a few thing thanks again
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Lehocki said:
Hello. Ok so I created a ROM what I call MyTWGE (Tuchwiz Google Edition). Followed the instructions, unzipped the stock Verizon OS went into the -app- folder deleted all the Verizon, Samsung and Google apps (only the ones that are download able from Google Play). Replaced the stock launcher with the 5x6 version that I extracted from another zip, replaced the camera with the Google edition camera (download able from GP), replaced the keyboard with the Note2 keyboard (also unzipped from another zip). Looked around and deleted a few more files I found that were connected to some Samsung apps and zipped it up. Flashed the zip yesterday onto the phone and it's ALIVE working.
Thank you for your patience to write up all these instructions. I previously used TB to debloat my phone and that was it, learned a few thing thanks again
Sent from my SCH-I535 using xda app-developers app
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Lol the whole time I was reading this I was waiting for you to say something didn't work out for you but it all did I guess. Nice!!
Yeah running for the past 24h no problems everything works. Thanks
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---------- Post added at 02:24 AM ---------- Previous post was at 02:07 AM ----------
Only thing that that's annoying is the wifi in the taskbar. I read in one of the posts that I have to go into systemui and some other files within n delete lines 12 through 21 but that didn't work , am guessing I need to decompile systemui to do that. The person in the post didn't clarify and I'm not ready to do that yet. Reason is I don't know anything about programming or linux or decompiler or anything like that. Deleting files I can do replacing some sure. But I'm happy my first attempt to mix something together worked and I'll keep doing it till I actually figure out what it is that I am doing. Thanks again for the post
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Yea. Follow Didacts write ups to get you through it. It's all in framework res apk.