Hi all,
I'm trying to fiddle with a Google apk file that I'm reskinning. Essentially there are multiple versions of the app in the wild already, but one has a dark grey background and I'm trying trying to make it all black.
I figure I need to change the xml file contained within the app. I guess I can just root and edit the xml file that way but I want to stay un-rooted if possible. That means editing the APK.
I downloaded Android Multitool and am trying to unpack the APK, make the necessary changes, and repack it. I'll probably run into signature issues down the road but currently I'm stil struggling with repacking. Specifically, I think I need a framework-res.apk, which I don't know how to find.
I'm assuming I need a stock Android framework-res.apk given the nature of the app, but I don't know where to find one....
Related
ok, so I am working on reskinning sense, I'm using DamageControl 2.1 right now and I was able to edit some of the files used in com.htc.resources.apk without problem.
The problem I am having right now is whenever I try and modify a file in rosie, repack and resign and adb push it back to the phone, sense force closes until I revert back to the orginial file, has anyone run into the same issue?
I am going to download the latest framework to see if there might be an issue with signing caused by not having the latest one. I really can't remember which version I'm running.
i give you credit, i wouldn't even attempt to try this on my phone.
Quick question, is there a reason why you're resigning the .apk? There is no need too.
I was under the impression, perhaps uneccesarily, that whenever you modify an apk it needs to be resigned to prevent problems.
I've always done this, I have never had a problem with that practice in the past which is why it perplexed me now. As I already stated, there was no problems when I modified com.HTC.resources.apk
I'm drunk
obelisk79 said:
ok, so I am working on reskinning sense, I'm using DamageControl 2.1 right now and I was able to edit some of the files used in com.htc.resources.apk without problem.
The problem I am having right now is whenever I try and modify a file in rosie, repack and resign and adb push it back to the phone, sense force closes until I revert back to the orginial file, has anyone run into the same issue?
I am going to download the latest framework to see if there might be an issue with signing caused by not having the latest one. I really can't remember which version I'm running.
Click to expand...
Click to collapse
There is images where the name is yadayad08.png, well the number might not be 08 it might be another number and i really dont feel like diggin into it right now, but the images with that number in the end have scripts attatched to the or it written into the image. Have you looked into that. Sorry if I have been %100 clear but ther is images with scripts actually written inside of them......... if you can follow what i'm sayin...:\ I'm drunk......... anyway i'll look into it right now and be back so I dont look like a complete douchebag
So some images have a script stored in the same file? I have never heard of that before. I'd like to see some examples if possible, and how exactly do you modify them?
Time to put my Google-fu to good use.
Edit: whatcha drinking?
The file I am trying to modify is common_mainnav_scroller3.png. maybe that will help. I'm not at my laptop right now, so I am not able to try modifying it without resigning.
I also found some info about the images with scripts attached to them. I have a utility now to modify that stuff, however looking around some more I also think the files with a filename.9.png are the applicable files. I'm not modifying them right now.
obelisk79 said:
The file I am trying to modify is common_mainnav_scroller3.png. maybe that will help. I'm not at my laptop right now, so I am not able to try modifying it without resigning.
I also found some info about the images with scripts attached to them. I have a utility now to modify that stuff, however looking around some more I also think the files with a filename.9.png are the applicable files. I'm not modifying them right now.
Click to expand...
Click to collapse
yea i know forsure the.9 files have scripts attached however if your just changing something as small as an icon I don't think it should matter. Not sure though, i was trying to port a theme and i ran into this situation im not a linux guru so I kind of gave it up
I do not resign the .apk after modifying them If you are only changing images just make sure the new image has the same name and just open the .apk and drag n drop the image into the folder where it needs to be it will over write the old image and store the new one.
I have modified the Rosie.apk and com.htc.resources.apk many times to change things in the taskbar change over to Espresso etc
if you are only changing .png files just drag and drop.
Also like cheyne1 said files or .png's with xxxx.9.png etc in them are more than just .png files and replacing them will cause all sorts of issues if the new file is not made correctly
well, lesson learned... drag-n-drop worked. didn't think rosie apk was going to be so testy. thanks for the help.
(I'm new at this, any help, or even wild guesses, would be appreciated)
I'm using Daneshm90's (very awesome) APK Manager to mess around with my framework-res.apk file. I've sucessfully reskinned some pngs and changed some xml files and stuff like that.
Why does the following cause a bootloop?
1) Decompile Framework-res.apk
2) Make a copy of res\drawable\btn_default_small.xml and rename it btn_default_small2.xml
3) Change the background of something to android:background="@drawable/btn_default_small2"
4) Compile\flash to phone etc, watch it bootloop
I can edit existing files just fine, but whenever I try to add and use a new file everything grinds to a halt, even if its just a copy of a working 'stock' file. What am I missing? Is there a list of files somewhere I need to add my new xml file to? Should I be building from source instead of using apk manager?
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
I've looked around for some good tutorials on decompiling APKs using APKTool but haven't been able to get a few questions answered. Hoping someone can guide me with this process a bit since I'm really new at it.
A few things first: I am running CM 7.1 on a Droid Incredible (orig) and I'm also on Windows, not Linux. I'm looking to make some changes to the code of an APK and have APKtool downloaded. Questions I have so far are:
1) Do I need to use the CM 7.1 framework-res.apk file for any decompiling / /recompiling work on this 3rd party APK? Or can I do all the work without it? No one seems to have a clear answer on that and I'm not sure exactly what the framework-res.apk is for exactly.
2) After I decompile an APK and make code changes to a SMALI file, is there anything I need to do special before running the compile command?
3) After I have a newly compiled APK, what do I need to do to make this work on my phone? If I do nothing, the overall file size of the compiled APK seems much smaller than the original one that I decompiled so it seems like something is wrong. Plus it won't install. I saw one video where the newly compiled APK is renamed to .ZIP and the contents are put into the ORIGINAL APK (also renamed to .zip), overwriting all the original contents. Is this required?
4) I've also read that APKs need to be signed to install on Android. Is this correct? I found "SignApk" online which seems like it just asks you to rename your APK to app.apk and it does the signing by running a .BAT file. Is that all I have to do before installing the APK on my phone?
Would really appreciate any help on this. Or if there's a great tutorial out there on doing this, I'd be happy to read through.
Thanks for any help in advance!
I want to know these too! Hope someone helps
Hi, I'm trying to modify /system/framework/framework-res.apk (on the stock Samsung Oreo ROM), more exactly config_locationProviderPackageNames in res/values/arrays.xml so that I can add org.microg.nlp as location provider. I've used the latest apktool (2.3.4) to unpack and repack the apk. I'm replacing it from TWRP and I checked that it has the same owner and rights. And after rebooting the device never finishes booting up (stuck at Samsung logo and blue led).
If I boot back to recovery and put back the original framework-res.apk the system boots fine.
What else do I need to do to make it accept the modified framework?
hey
Are you ONLY modifying the apk?
I would say there is a lot of things to check. It could be that the apk is being rejected by your handling of it. Compare both versions by 7zip lz4 without extracting. Try and use the best tools during the process.
Also more than likely you're conflicting with a service or permission that a perfect apk can't fix.
Have you tried a search in your ROM to see if any files might be associated with the result you want?
Stuff like...
com.android.location.provider.jar
com.android.location.provider.odex
com.android.location.provider.xml
Try doing all the work from your phone without any windows apps. FX explorer and symlink the apk.
Now that everything I said was probably wrong, someone else can tell you how. I'd try fx and symlink, though. It may just align the planets for you
I'm only modifying one XML resource file, but I don't know what else apktool is doing to the apk.
I'm replacing the original framework-res.apk from TWRP, by cat-ing the modified apk over the original, and I've double checked that the ownership and permissions are unchanged.
I guess I can try using another unpack/repack tool and see if it turns out any better, but I've been told that apktool is as good as it gets.
Perhaps it's because the ROM expects the apk to be signed with a certain key? I don't suppose that the key used by Samsung is available somewhere inside the ROM is it?
wirespot said:
I'm only modifying one XML resource file, but I don't know what else apktool is doing to the apk.
I'm replacing the original framework-res.apk from TWRP, by cat-ing the modified apk over the original, and I've double checked that the ownership and permissions are unchanged.
I guess I can try using another unpack/repack tool and see if it turns out any better, but I've been told that apktool is as good as it gets.
Perhaps it's because the ROM expects the apk to be signed with a certain key? I don't suppose that the key used by Samsung is available somewhere inside the ROM is it?
Click to expand...
Click to collapse
@wirespot - Did you ever solve the problem you described in this thread?
Not really. My last attempt was to use Runtime Resource Overlays (RROs) to override certain framework values in order to allow org.microg.nlp to run side by side with Google's service.
I will provide them below but it ultimately didn't work. The RRO apk was installed correctly, I could access the NLP settings in the system settings but the main app still could not detect or connect to the service and none of the apps that use location would work.
If anybody else wants to build or use the RRO apk I'm attaching the relevant files as well as the apk. Please note that the built apk only has "org.microg.nlp" as service in arrays.xml (but I provide an arrays.xml with all three services).
apktool.yml is provided as txt file because it wouldn't let me upload it otherwise, remove the .txt. It's used if you build the package with apktool. Remember that you'll also have to generate your own certificate and sign the package in order to install it.
Also some links that may help:
https://forum.xda-developers.com/t/guide-how-to-make-gsis-overlay-file-for-your-phone.3878974/
https://github.com/ReinhardStrauch/framework-res-overlay-sample
https://android.stackexchange.com/questions/110927/how-to-mount-system-rewritable-or-read-only-rw-ro
https://source.android.com/devices/architecture/rros#configuring-overlays
https://source.android.com/devices/automotive/hmi/car_ui/appendix
https://source.android.com/devices/automotive/hmi/car_ui/rro#step_6_dump_the_idmap
https://dzone.com/articles/customizing-android-devices-using-the-runtime-reso
https://dzone.com/articles/android-solution-install-parse-1
https://stackoverflow.com/questions...s-not-recognized-internal-or-external-command
https://github.com/lineageos4microg/android_prebuilts_prebuiltapks/issues/22
wirespot said:
I guess I can try using another unpack/repack tool and see if it turns out any better, but I've been told that apktool is as good as it gets.
Click to expand...
Click to collapse
For decompiling and building Android Oreo, I prefer version 2.3.1 of APKTool to other versions of APKTools.
wirespot said:
I'm only modifying one XML resource file, but I don't know what else apktool is doing to the apk.
...
Perhaps it's because the ROM expects the apk to be signed with a certain key? I don't suppose that the key used by Samsung is available somewhere inside the ROM is it?
Click to expand...
Click to collapse
wirespot said:
Hi, I'm trying to modify /system/framework/framework-res.apk (on the stock Samsung Oreo ROM), more exactly config_locationProviderPackageNames in res/values/arrays.xml so that I can add org.microg.nlp as location provider.
What else do I need to do to make it accept the modified framework?
Click to expand...
Click to collapse
I have not tried modifying framework-res.apk of a Samsung Android Oreo nor have I particularly tried the location services mod you are attempting (though I might get around to trying it someday) and do not know if it is valid to to accomplish what you want with it, but believe that the process should be similar to modding the file on LG Android Oreo. I shall try to guide you to how to prepare a framework-res.apk that is proper.
To answer your question about expecting a certain key. The answer to that is that that is usually the case. The signing scheme checks on system apps; however is usually not as thorough as non-system apps. framework-res.apk is also special in that it is not a running app and is instead used as a cache of system resources and system meta information. In the past, before Android Oreo, a rebuilt framework-res.apk may be made to work simply by including original signature files (META-INF) and corresponding AndroidManfest.xml file from the original framework-res.apk into the rebuilt fraemwork-res.apk file. The system would evaluate these files, and pass a check for valid platform signature. With Android Oreo, it appears that there is an additional check that was not present in the past; my best guess is that the system is checking for the V2 signing scheme signing block within the V2 Signing Scheme APK file structure. The check does not, however, thoroughly validate the signing block information.
Your mod seems rather simple and, given your previous posts, would only involve a modification to framework-res.apk "resources.arsc" member file (which contains the compiled "res/values/arrays.xml" file). If the rebuilt "resources.arsc" can be used to update ("Update" is an actual ZIP archive operation) the original framework-res.apk's member file, the updated framework-res.apk should work (and remained zip-aligned if originally zip-aligned), so long as the packed file size of the updated member file is less than or equal to the packed size of the original member file, plus up to 4 bytes depending on proximity to the next member file data if original framework-res.apk is zip-aligned as expected. If the packed modified member file(s) are larger, the original APK file structure would likely not be preserved, and a different method might have to be used. Also note that 7-Zip is not reasonable software to use for this, despite it being included with many tools on XDA to modify APK files; the software has had a history of rearranging unnecessarily zip file table entries when a change is made to an archive. Use a different tool that does not do this, such as WinRAR (I have tested version 5.61).
For normal apps, one may not copy over "resources.arsc" or resources from two different app builds and have things work correctly when the app runs; one would also need to make corresponding changes in the *.dex APK member files. framework-res.apk, not being an app the runs, has no corresponding *.dex files, and one need not worry about corrupting the relationship between the *.dex files and the resource files because none exists to corrupt.