Develop Reference

How to list all possible packages / modules in AOSP via command line?

In AOSP, I often use the following to setup my environment and build target and build the entire image:
$ cd ~/aosp
$ source build/envsetup.sh
$ lunch sdk_phone_x86_64
$ m
I also like to use the following to build a specific package/module instead of the entire image:
$ m <my package>
or
$ cd <path_to_package>
$ mm
Is there a way to simply list all possible packages/modules in all of AOSP? Similar to how running lunch displays all possible targets, I'm interested in seeing a list of all possible packages/modules (e.g. defined in Android.bp and Android.mk).
Follow up question: given a package/module name, is there a way to get the directory or path to the file that defines it?

build/make/envsetup.sh has define the shell function:
- allmod: List all modules.
- pathmod: Get the directory containing a module.

How to check obfuscation results of flutter app?

In native android development I could check whether my minifyEnabled had taken effect.
I used this script (in linux) which allows me to extract the apk and view the java files to see if my code is readable, or has been obfuscated :
#! /bin/bash
d2j=/work/installs/dex2jar-2.0
jdgui=/work/installs/jd-gui-1.4.0.jar
apk_loc=/work/projects/my_app/build/app/outputs/app-release.apk
mkdir -p /work/tmp/dex
rm -rf /work/tmp/dex/*
cd /work/tmp
cp $apk_loc ./app-release.zip
unzip app-release.zip -d dex
cd dex
chmod +x $d2j/*.sh
$d2j/d2j-dex2jar.sh classes.dex
java -jar $jdgui classes-dex2jar.jar
If I use this script on a flutter apk, I don't see any files containing anything related to my original code.

Flutter's dart code is compiled to native and embedded to flutter.so runtime, so decompiling flutter is not as easy as byte code of java/kotlin
However decompiling .so file is possible. You can use the toolchains inside the android ndk to perform the type of disassembling you want to
./android-ndk-r15b/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-objdump -T "flutter.so | less
but this is just give you an objdump.

Creating APK from Kivy on Mac OS X fails after compile

My background is in HTML/JS, so compiling is new for me. While attempting to build my python project in Kivy to an Android .apk, I am getting an error I do not understand:
Command failed: ./distribute.sh -m "kivy"
Here is a portion of the tail end of the debug output...
Compiling /Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/xmllib.py ...
Compiling /Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/xmlrpclib.py ...
Compiling /Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/zipfile.py ...
make: [libinstall] Error 1 (ignored)
PYTHONPATH=/Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7 LD_LIBRARY_PATH=/Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python/Python-2.7.2: \
/Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python/Python-2.7.2/hostpython -Wi -t /Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/compileall.py \
-d /Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages -f \
-x badsyntax /Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages
Listing /Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages ...
PYTHONPATH=/Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7 LD_LIBRARY_PATH=/Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python/Python-2.7.2: \
/Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python/Python-2.7.2/hostpython -Wi -t -O /Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/compileall.py \
-d /Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages -f \
-x badsyntax /Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages
Listing /Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/site-packages ...
PYTHONPATH=/Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7 LD_LIBRARY_PATH=/Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python/Python-2.7.2: \
/Users/Travis/buildozer/.buildozer/android/platform/python-for-android/build/python/Python-2.7.2/hostpython -Wi -t -c "import lib2to3.pygram, lib2to3.patcomp;lib2to3.patcomp.PatternCompiler()"
Leaving ARM environment
cp: build/lib.linux-x86_64-2.7/_ctypes*.so: No such file or directory
# Command failed: ./distribute.sh -m "kivy" -d "myapp"
#
# Buildozer failed to execute the last command
# The error might be hidden in the log above this error
# Please read the full log, and search for it before
# raising an issue with buildozer itself.
# In case of a bug report, please add a full log with log_level = 2
Here is the full debug, for those who want it...
https://www.dropbox.com/s/45lgdhk5y4uj8eg/KivyDebug.txt?dl=1
Also, my buildozer.spec file...
https://www.dropbox.com/s/g5p43jjts49rzza/buildozer.spec?dl=1
EDIT: Downgrading Cython per the advice HERE did not help.
EDIT2: Tried changing requirements to kivy==master. No luck.
EDIT3: Tried chmod -R 777 on both source and buildozer folders. No luck.

OK, I came across the answer to my own problem a while ago and I'm posting it here in case someone else makes the same boneheaded mistake. Basically, I did not read the instructions carefully enough in the documentation. The instructions clearly state "navigate to your project directory and run: buildozer init". I did not navigate to the project folder. I was building in my user directory, hence "/Users/Travis/". Hence the "No such file or directory" error.
You may be asking "How do you expect buildozer to know where your project is?"
Well, the next step says to configure "buildozer.spec", and in there, there is a place to put your path to the main.py, which by default is ".", so I changed that. It actually worked up to the point that it has to write any files.
So, if you're having the same issue as me, you might just need to read more carefully.

Building OpenSSL for Android (ARMv7) on Win32

How can I build OpenSSL for Android ARM v7 (using Android NDK) on Win32?

Until the OpenSSL's wiki and setenv-android.sh are updated accordingly, I'll publish the recipe here. The required fixes to the process are:
Update setenv-android.sh to support Windows.
Update PATH to use Android NDK's (mingw) GNU make (rather than Cygwin's).
Invoke make with a Windows-style path to Cygwin's perl.
This recipe will be a strange hybrid of Cygwin and mingw (since Android NDK gcc toolchains for win32 are mingw). I'm assuming a Windows x86_64 build of the Android NDK unpacked into c:\android-ndk-r9d, and that you wish to use a gcc 4.8 toolchain.
Install Android NDK (duh!).
Install Cygwin -- make sure to include perl
Start Cygwin shell as an administrator to make sure native symlinks will work.
Within the console, run the following script to set the variables:
export \
CYGWIN=winsymlinks:native \
ANDROID_API=android-14 \
ANDROID_DEV=c:/android-ndk-r9d/platforms/android-14/arch-arm/usr \
PATH=/cygdrive/c/android-ndk-r9d/prebuilt/windows-x86_64/bin:/cygdrive/c/android-ndk-r9d/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64/bin:$PATH \
MACHINE=armv7 \
SYSTEM=android \
ARCH=arm \
CROSS_COMPILE=arm-linux-androideabi-
Now, unpack openssl:
tar xzfv openssl-1.0.1i.tar.gz (or whatever your tarball is)
cd openssl-1.0.1i (or whatever your version is)
Make sure you have actual native Win32 (!) symlinks in include/openssl:
cmd /c "dir include\openssl"
You should see something like:
13-Aug-14 05:59 PM <SYMLINK> aes.h [..\..\crypto\aes\aes.h]
13-Aug-14 05:59 PM <SYMLINK> asn1.h [..\..\crypto\asn1\asn1.h]
(etc.)
Now it's time to configure:
./config shared -no-ssl2 -no-ssl3 -no-comp -no-hw -no-engine --openssldir=/foo/bar
Ignore the failure to build (due to failure to find perl). We'll rectify this right away. Do this:
make PERL=$(cygpath -w $(which perl))
Now wait for a few minutes until it builds, and presto, you have your libcrypto.so etc.

Just a couple of comments on my experience with this:
Executing this statement:
PERL=$(cygpath -w $(which perl))
in the cygwin shell allows the shell to interpret the backslashes as escape characters and the build process chokes. To solve this I did the following:
$ echo $(cygpath -w $(which perl))
which produced the windows formatted path to the perl executable:
C:\cygwin64\bin\perl
Then I added this line to the export shown above:
PERL=c:/cygwin64/bin/perl \
There are other ways of doing this, but it worked and headed off the problem with the ./config statement documented above (not finding perl).
Second issue was the -no- statements. After running the configure, the script reports that you'll have to run make depend. I wanted to exclude MD5 (i.e. -no-md5) and when I did the make depend, it errored out with a report that MD5 was disabled. Uhhh, yes, that was kind of the idea, but I just won't use MD5 hashes. I did use the -no-ssl2 and didn't get any complaints after the make depend.
Third issue and this is a mystery. The build broke on compiling crypto because it could not find a symbol that is supposed to be defined in /crypto/objects/obj_xref.h. When I looked at the file, it was empty. Something in the perl script I suppose, but no time to debug right now, since I'm at proof of concept phase. I placed a copy from a patch that I picked up at https://github.com/devpack/openssl-android
After that, my build ran to completion. I've done no testing with this and it is not a trustworthy solution, but it did compile and produce the static libraries that I need for proof of concept for my client.
Just as an update, my shared library built with these libraries loaded fine on my target.

android monkey runner scripts

I was trying to run a a sample python program using monkey runner but unfortunately throwing an error of this type :
Can't open specified script file
Usage: monkeyrunner [options] SCRIPT_FILE
-s MonkeyServer IP Address.
-p MonkeyServer TCP Port.
-v MonkeyServer Logging level (ALL, FINEST, FINER, FINE, CONFIG, INFO, WARNING, SEVERE, OFF)
Exception in thread "main" java.lang.NullPointerException
so any one can guide me how to resolve this and how to use monkey runner to execute this type of things

I've found that making the path to the script absolute helped monkeyrunner.
I am invoking the runner from a Python script where a helper class has a startMonkey method:
def startMonkey(self, monkeyScript):
command = [ self.env + '\\tools\\monkeyrunner.bat' ]
command.append( os.path.abspath( monkeyScript ) )
return startProcess( command )
This seems to be working for me.

Script file should be a full path file name try below monkeyrunner c:\test_script\first.py
So go to the folder \ sdk \ tools
and press shift and right click to open command prompt and type monkeyrunner c:\test_script\python_file_name.py