[Q] aspiring developer - Android Q&A, Help & Troubleshooting

So i've compiled my first build from source (NS4G) and have a few questions.
1. after its completed compilation what is the directory/path that i can find the files i need. Ive uploaded a screenshot of the path i think it is however it doesnt contain a system.img file why is that and do i need it?
2.Once i have the correct files how to i place them for use in the emulator?
thank you for any help.

Related

Insert folder on Sdcard/Android/Obb

Hi, i'm editing my first custom rom for my device ( http://www.plunk.it/tvbox/pro ). I wnat to build my custom rom and i need to insert some folders in Sdcard/Android/Obb. When i unpack the firmware i have not this folder. I need to insert this when I edit the firmware.
How can i do?
itachar said:
Hi, i'm editing my first custom rom for my device ( http://www.plunk.it/tvbox/pro ). I wnat to build my custom rom and i need to insert some folders in Sdcard/Android/Obb. When i unpack the firmware i have not this folder. I need to insert this when I edit the firmware.
How can i do?
Click to expand...
Click to collapse
Edit your device.mk in the device tree for your phone. Copy the format used in that file with the files you want to copy
Haze028 said:
Edit your device.mk in the device tree for your phone. Copy the format used in that file with the files you want to copy
Click to expand...
Click to collapse
Sorry, where i find device.mk? Sorry but this is my first custom rom. Can you give me more informations?
itachar said:
Sorry, where i find device.mk? Sorry but this is my first custom rom. Can you give me more informations?
Click to expand...
Click to collapse
In the device tree repo for your device. you'll need the vendor kernel and device source for your device in order to build a custom rom.
The device source will contain a device.mk file, this is where you would add files that need to be copied to the device during the build, along with alot of other things.
I put together a guide on how to build here. I know there are alot of guides out there for building roms, and this isn't much different. Though i've tried to make it as noob friendly as possible.

[HELP] Modifying ROM doubts

Good evening,
I've written a module for my smartphone and I need to compose a rom to install on my device...
I followed some tutorials, so now I know how to build an android kernel, obtaining a zImage.
Now, a friend told me that I must make a backup with clockworkmod (done!) and download on my pc, than I can recover the boot.img from there and split them in ramdisk and kernel.
Now I can compile my new kernel and merge it (the obtained zImage?) with the ramdisk to have a new rom to flash on my device... is true?
But I don't know how I can split the boot.img (maybe with dsixda kitchen?) and how to create the new rom. I tryied som weeks ago with a .zip rom and the dsixda kitchen and I split and recomposed a rom, but files contained in the .zip files was different from files that I downloaded by my device...
Someone can explain me the correct way to do this process? Thank you!
Paolo.dev said:
Good evening,
I've written a module for my smartphone and I need to compose a rom to install on my device...
I followed some tutorials, so now I know how to build an android kernel, obtaining a zImage.
Now, a friend told me that I must make a backup with clockworkmod (done!) and download on my pc, than I can recover the boot.img from there and split them in ramdisk and kernel.
Now I can compile my new kernel and merge it (the obtained zImage?) with the ramdisk to have a new rom to flash on my device... is true?
But I don't know how I can split the boot.img (maybe with dsixda kitchen?) and how to create the new rom. I tryied som weeks ago with a .zip rom and the dsixda kitchen and I split and recomposed a rom, but files contained in the .zip files was different from files that I downloaded by my device...
Someone can explain me the correct way to do this process? Thank you!
Click to expand...
Click to collapse
So many u can use
1. http://forum.xda-developers.com/showthread.php?t=1619473
2. http://forum.xda-developers.com/showthread.php?t=2036528
3. http://forum.xda-developers.com/showthread.php?t=1877807
and many more if u search

[Q] Extract Compressed File to SD Card Director on First Boot

Hey guys,
I'm currently in the middle of developing my own ROM for an S802 based TV box (M8). I am close to releasing but I have a few issues, one very much in particular. I am trying to find a script that will extract a .tar file to the /sdcard/ directory on first boot of the ROM but I'm having a hell of a time. I am a reseller of these boxes and I'm trying to get my Kodi userdata to extract into the proper directory, /sdcard/Android/data/, on first boot but nothing I do seems to be working. Currently I'm using a script called installApk.sh. From what I've gathered it works fine for extracting .tar files to non-sdcard directories but when I attempt to point the extract path of the tar to the /sdcard/ directory it fails. I've also tried decompiling the kodi apk, injecting all of my userdata directly into the apk and re-signing but that causes all of the addons to fail. I'm wondering if any of you have run into a similar issue or know a solution to my problem. Any help is appreciated. Thanks.
Mag
th3magpi3 said:
Hey guys,
I'm currently in the middle of developing my own ROM for an S802 based TV box (M8). I am close to releasing but I have a few issues, one very much in particular. I am trying to find a script that will extract a .tar file to the /sdcard/ directory on first boot of the ROM but I'm having a hell of a time. I am a reseller of these boxes and I'm trying to get my Kodi userdata to extract into the proper directory, /sdcard/Android/data/, on first boot but nothing I do seems to be working. Currently I'm using a script called installApk.sh. From what I've gathered it works fine for extracting .tar files to non-sdcard directories but when I attempt to point the extract path of the tar to the /sdcard/ directory it fails. I've also tried decompiling the kodi apk, injecting all of my userdata directly into the apk and re-signing but that causes all of the addons to fail. I'm wondering if any of you have run into a similar issue or know a solution to my problem. Any help is appreciated. Thanks.
Mag
Click to expand...
Click to collapse
see Introduction : How to build an Android ROM - XDA-University
[GUIDE] [how to] CREATE OWN ROM [FOR ANY ANDROID DEVICE] [FOR N00B] [EASIEST METHODS] by lokeshsaini94
This thread will be moved to Android Q&A, Help & Troubleshooting

Converting Amlogic firmware IMG files into flashable ZIP for custom recovery

While trying to create my first ever Android firmware I had solve several problems, especially if you consider that I prefer under Windows instead of Linux.
I won't go into too many details as I have to assume everyone attempting this did at least some reading on the general how to of firmware installations and modifications.
Things you need:
Original firmware for your device as a IMG file
Amlogic's Customisation tool
A Rom Kitchen of your choice (I use Carliv)
System_Extractor-WIN-master
Some time...
Step1: Load the firmware into the AML tool and tick all boxes except the last one.
In the tmp folder you will find the unpacked files.
Under Level one are the files we want.
You will see a bunch of "PARTITION" files, we copy the following ones into a seperate folder for further use to create the ZIP.
I suggest to name the folder "Install" so we are all on the same page here.
boot.partition
bootloader.partition
logo.partition
recovery.partition
If you checked a flashable ZIP update before you will notice some files are missing, let's try to fix that.
Rename all partition files you copied to img, so instead of boot.partition you get boot.img.
Unpack the boot.img with your kitchen.
You will find a file "boot.img-second" - copy that into your install folder and rename it to dtb.img.
Inside the unpacked ramdisk (In your kitchen) of the boot.img you will fing the "file_contexts" file - copy that into your install folder as well.
Most AML firmware I had so far used a system.new.dat and a system.transfer.list to create the system partition.
We can create them from the system.partition file after renaming to system.img in System_Extractor-WIN-master .
To do this the system.img needs to be unpacked and we need again a copy of the file_contexts.
After the image is unpacked we can pack it again as system.new.dat and system.transfer.list.
The last missing bits can be tricky though as now we need a META-INF folder that works for our device in question.
There are two way to fix that.
Method one:
Search the usually chinese websites using Google to find original firmware for your device.
Chance are that you will find something like an OTA update - in there you will find what you need.
Method two (I never tested that):
Take the META-INF folder from an OTA update of a box with identical hardware specs.
Most important part here is the memory configuration so for a 2/16GB box you need a 2/16GB OTA update.
Next of same importance is the WiFi/Bluetooth config.
If you only have Wifi than an update for a box With daul wifi and BT4.0 won't help you.
If the actual Wifi chip is a different one but CPU, GPU, Memory and connections are the same it should still work.
Once you have the META-INF folder included into your Install folder the firmware is ready to be zipped - in theory!
The X96 for example uses a hash check for the update and created system partition.
To be able to flash your image you need to know what the original recovery would expect - has check or not.
The updater script within the META-INF folder needs to be updated to match your build.prop details as well hash check/no hash check.
Again, with an original OTA update you will find these infos.
Only if you don't have the OTA and no clue what your updater script and recovery needs you are a bit lost.
I know I has not all the steps in detail and if you are without and OTA update you need to search but otherwise feel free to ask and I will try to assist to make it complete if I can.
Downunder35m said:
While trying to create my first ever Android firmware I had solve several problems, especially if you consider that I prefer under Windows instead of Linux.
I won't go into too many details as I have to assume everyone attempting this did at least some reading on the general how to of firmware installations and modifications.
Things you need:
Original firmware for your device as a IMG file
Amlogic's Customisation tool
A Rom Kitchen of your choice (I use Carliv)
System_Extractor-WIN-master
Some time...
Step1: Load the firmware into the AML tool and tick all boxes except the last one.
In the tmp folder you will find the unpacked files.
Under Level one are the files we want.
You will see a bunch of "PARTITION" files, we copy the following ones into a seperate folder for further use to create the ZIP.
I suggest to name the folder "Install" so we are all on the same page here.
boot.partition
bootloader.partition
logo.partition
recovery.partition
If you checked a flashable ZIP update before you will notice some files are missing, let's try to fix that.
Rename all partition files you copied to img, so instead of boot.partition you get boot.img.
Unpack the boot.img with your kitchen.
You will find a file "boot.img-second" - copy that into your install folder and rename it to dtb.img.
Inside the unpacked ramdisk (In your kitchen) of the boot.img you will fing the "file_contexts" file - copy that into your install folder as well.
Most AML firmware I had so far used a system.new.dat and a system.transfer.list to create the system partition.
We can create them from the system.partition file after renaming to system.img in System_Extractor-WIN-master .
To do this the system.img needs to be unpacked and we need again a copy of the file_contexts.
After the image is unpacked we can pack it again as system.new.dat and system.transfer.list.
The last missing bits can be tricky though as now we need a META-INF folder that works for our device in question.
There are two way to fix that.
Method one:
Search the usually chinese websites using Google to find original firmware for your device.
Chance are that you will find something like an OTA update - in there you will find what you need.
Method two (I never tested that):
Take the META-INF folder from an OTA update of a box with identical hardware specs.
Most important part here is the memory configuration so for a 2/16GB box you need a 2/16GB OTA update.
Next of same importance is the WiFi/Bluetooth config.
If you only have Wifi than an update for a box With daul wifi and BT4.0 won't help you.
If the actual Wifi chip is a different one but CPU, GPU, Memory and connections are the same it should still work.
Once you have the META-INF folder included into your Install folder the firmware is ready to be zipped - in theory!
The X96 for example uses a hash check for the update and created system partition.
To be able to flash your image you need to know what the original recovery would expect - has check or not.
The updater script within the META-INF folder needs to be updated to match your build.prop details as well hash check/no hash check.
Again, with an original OTA update you will find these infos.
Only if you don't have the OTA and no clue what your updater script and recovery needs you are a bit lost.
I know I has not all the steps in detail and if you are without and OTA update you need to search but otherwise feel free to ask and I will try to assist to make it complete if I can.
Click to expand...
Click to collapse
Thank you for this explanation, but the explanation of the video to better understand everyone
Will see if I can at least add some pics while working on Nougat.
Hello,
Thanks for you tutorial.
I have a h96 Pro+ and the last firmware was a .img file... (Link of the firmware : https://mega.nz/#F!d1tHVZgA!Qc0mAom7FBHT9HDv3rGtGQ )
Is there a good guy who can convert this .img to a .zip file please ?
A lot of users are asking for this, me too and if you can help me to do this it will be really cool and appreciate
Thank you,
Carmin.
Thanks for your explanation im trting to port 7.1.1 to my tv box and i have found one funcional the only troble is the wi fi drivers not working ill give it a try latter today
Sent from my SM-N9300 using Tapatalk

need to find path

hello there i need to edit a file and could find the following path :
frameworks/base/core/res/res/values/config.xml
the rom is flashed on my device and i just want to edit some things there. I did find out that this is a path from source files but i want to edit the file within the builded rom. There must be a path to edit this after you flashed the rom.
thanks in advance

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