Compile, decompile and sign APK using apktool utility.

1. Download latest apktool version.
2. Download the batch file and aapt.exe.
3. Create a folder anywhere in the PC and put all the apktool.jar, aapt.exe and the batch script in that folder.

4. Open command prompt.
5. Navigate to the folder where you placed apktool.jar, batch script and the aapt.exe.
6. Now, you need to install the file using the " IF " command.
7. Type the following command.

	apktool if name-of-the-app.apk
	
8. For decompiling use the command "d". The "d" stands for decompile.

	apktool d name-of-the-app.apk
	
9. After the app is correctly decompiled, a new folder will be created in the same folder where you placed your app. This contains all the xml's and smali files which can be edited for different mode's.

10. To recompile the app use the following command " B ". The "b" simply means recompile.

	apktool b name-of-the-app-folder
	
11. The final modded app will be in the "dist" folder located inside the original app folder created by apktool.

Signing the apk

1. open a new command prompt and change into the sign-apk directory using cmd
2. move the modified-unsigned apk into this folder

3. then type the following command -

	java -jar signapk.jar certificate.pem key.pk8 path-of-the-folder-contaning-the-apk.apk path-of-the-new-signed-apk.apk
	
4. Once compiled, the signed apk will be found in the same folder.

hello,
thanks for this tutorial,

i use this process to decompile/rebuild/signed the calendar apk of the android system but when i want to install in the phone, it keeps telling me "a package with same name followed by a different signature....."
so application not installing

how to use the same signature

@Faugun, you need to uninstall the calendar app on your phone before you can install the apk you tampered with. It should however work on another android device that doesn't use the same calendar app.

Hey guys ,

I am trying to get the 4g+ icon to show up on my pixel using bouygues here in france. I previously had a nexus 5x and on certain roms(ex: aosp extended and octos) the 4g+ icon would popup and I would notice an increase in data speed.

Ive dug into the matter and apparently in systemui.apk there is an xml where the setting for the lteplus icon is set to be hidden. I've tried to edit this and another line according to a post I was referred to on github , but after recompiling with apktool, I get a bunch of errors.

Could somebody more knowledgeable with apktool or compiling apps try and compile the app for me, please?

I've attached some images so you can see what I am talking about . The line is "config_hidelteplus=true"

https://imgur.com/a/nlEkIhG

It's a simple and perfect tutorial for apktool.
thank so much.

Where to find signapk.jar?

Where to find signapk.jar?

http://www.mediafire.com/file/h5fob1afzt1p4ss/SignApk.rar/file
Password : SanketN8