Develop Reference

Build application from command line

I'm trying to build an apk file from command line. I created a sample project usng the following command:
android create project --target 1 --name MyApp --path ./MyProject --activity MyActivity --package com.example.myapp
Which created the following structure:
/bin
/res
/src
/libs
AndroidManifest.xml
ant.properties
build.xml
local.properties
proguard-project.txt
project.properties
Now when I try to build the project, I get:
$ gradle build
gradle will not execute and completion _gradle exists.
I couldn't find any info on this error, so I ran:
$ _gradle build
_arguments:comparguments:312: can only be called from completion function
user has logged on pts/7 from :0.0.
Any hints on what am I doing wrong? Thanks!

android create project creates project in structure expected by Eclipse, not gradle based (Android Studio) projects.

I was able to build the apk using the following lines:
ant debug
adb install bin/HelloWorld-debug.apk

Javah class access fail

I wanna use tesseract library with my application so i need to implement ndk.i download it add its path to my bash_profile.
export ANDROID_ADB=/Users/gokhanaliccii/Library/Android/sdk/platform-tools
export ANDROID_NDK=/android_ndk/android-ndk-r10d
export PATH=$PATH:$ANDROID_ADB:$ANDROID_NDK
My problem is appeared when i run -javah command at studio terminal. My command is
javah -d jni -classpath /Users/gokhanaliccii/Library/Android/sdk/platforms/android-19/android.jar:/Users/gokhanaliccii/Documents/gokhan_private/android_ocr/NDK_TEST/app/build/intermediates/classes/debug gokhanaliccii.kou.ndk_test.MainActivity
after i got this error i tried to add support libraries
I tried to solved it but i coulndt find solution i'm really exhausted i hope someone know how to solve it
My project is at /Users/gokhanaliccii/Documents/gokhan_private/android_ocr/NDK_TEST

Dont need cp for javah
Run javac on source that includes file with native headers.
Cd to path that is parent of the root of where the ".class" files are.
On cli or in terminal run the javah ( no cp needed )
If stuvk do the ndk samples and it will make sense . They walk u thru javah sample

After lot of researches and training i solved my problem.
javah -classpath /Users/gokhanaliccii/Library/Android/sdk/platforms/android-19/android.jar:/Users/gokhanaliccii/Library/Android/sdk/extras/android/support/v7/appcompat/libs/android-support-v4.jar:/Users/gokhanaliccii/Library/Android/sdk/extras/android/support/v7/appcompat/libs/android-support-v7-appcompat.jar:../../build/intermediates/classes/debug -d jni gokhanaliccii.kou.ndk_test.MainActivit
My result command is above.I tried it at android studio,classes files are at build/intermediadtes/classes/debug if you want try it at eclipse it is under bin folder.

Building webrtc library

I am trying to build webrtc android demo application. I was following README applied by the project. First thing was mentioned about gclient but when i tried to run it "no external or internal command". Then i got this link according to the this link i cloned the depot_tool repository but when at the step when i try to run gclient i got this
So after hours of trying i am not able to run it. if any one has experience with this WebRTC library please provide some help. Any guidance? Any Hlep will be appreciated

I heard few things were changed from svn to GIT. We tried building webRTC to windows7 using visual studio. See if you can use any parts on this.
Get depot_tools software and extract to a location (set this path in environment variable).
cd to depot_tools directory and hit 'gclient' (this should take sometime)
Install python 2.7 and put it path.
create a folder of your choice for webRTC and open command prompt there.
Now hit, gclient config http://webrtc.googlecode.com/svn/trunk
then, gclient sync.
Then set GYP_GENERATORS=msvs environment variable (use ninja if you want that).
Also set msvs_version=2012 (depending on your visual studio version)
now run, gclient runhooks --force
This should generate solutions files for your folder. fireup the libjingle/webrtc.sln files and start building it. I'm not sure if it builds as is. But we had hicupps with that.
See this link on WebRTC native development if you haven't already. From my personal experience building this tricky job initially.
Also note that links might be deprecated as they moved to git, don't know if they are still maintaining it.

How to compile WEBRTC On ubuntu
download script and run:
https://cs.chromium.org/chromium/src/build/install-build-deps.sh
./build/install-build-deps.sh --no-chromeos-fonts
Now download depot tools
$ git clone --depth 1 https://chromium.googlesource.com/chromium/tools/depot_tools.git
Put it in Path
$ export PATH=`pwd`/depot_tools:"$PATH"
Define your settings:
export GYP_DEFINES="target_arch=x64 host_arch=x64 build_with_chromium=0 use_openssl=0 use_gtk=0 use_x11=0 include_examples=0 include_tests=1 fastbuild=1 remove_webcore_debug_symbols=1 include_pulse_audio=0 include_internal_video_render=0 clang=1 "
make file to download the source
mkdir webrtc-checkout
cd webrtc-checkout
I chose branch 50 you can change it
gclient config https://chromium.googlesource.com/external/webrtc.git#branch-heads/50 --name=src
gclient sync --force --with_branch_heads
gclient sync --force --with_branch_heads --nohooks
cd src
git checkout branch-heads/50
gclient runhooks
ninja -C ./out/Release
Collect your LIB & Include file to use it in your project
mkdir ../lib/
find ./ -name "*.o" -and -not -name do_not_use -and -not -name protoc -and -not -name genperf -exec ar crs ../lib/libwebrtc.a {} +
mkdir ../include
find ./ -name *.h -exec cp --parents '{}' ../include ';'

"cordova platform add android" fails with unexpected error

i am trying to install Phonegap on Ubuntu 13.04, i have installed the Android SDK with all available Packages, but running the following command:
cordova platform add android
fails with an unexpected error:
[Error: An error occured during creation of android sub-project. An unexpected error occurred: "$ANDROID_BIN" create project --target $TARGET --path "$PROJECT_PATH" --package $PACKAGE --activity $ACTIVITY &>/dev/null exited with 1
Deleting project...
I have set the PATH Variables for Android (tools / platform-tools) and java and ant are installed.
Why does this happen? How can i get a more detailed error message?

have you tried running command with sudo?
it could be a permissions issue.
If still not working, try running it using verbose mode i.e. sudo -d cordova...
In case this is due to activity name whitespaces, see comments for this answer.
There is an issue reported in https://issues.apache.org/jira/browse/CB-4198, for which I've sent a pull request to remove whitespaces https://github.com/phonegap/phonegap/pull/39.

As #José said, the "hello" example doesn't work because spaces are not allowed.
Changing it to "HelloWorld" solves the problem.

remove the space in between name tags in config.xml
MyAppName< name>

In my case, using debian wheezy, the example from: http://docs.phonegap.com/en/edge/guide_cli_index.md.html#The%20Command-line%20Interface does not work with this error:
[Error: An error occured during creation of android sub-project. An unexpected error occurred: "$ANDROID_BIN" create project --target $TARGET --path "$PROJECT_PATH" --package $PACKAGE --activity $ACTIVITY &>/dev/null exited with 1
Deleting project...
]
After adding $JAVA_HOME (Java sun, with openjdk did't work) and $PATH the andriod sdk path to .../sdk/platform-tools:../sdk/tool
The solution in my case was the project name:
The example that doesn't work:
cordova create HelloWorld com.example.hello "Hello World"
THIS works:
cordova create HelloWorld com.example.hello HelloWorld

Make sure your package and project names are correct, following the com.mycompanyname.myappname format without any numbers or dashes.
Here's the issue being tracked by PhoneGap.

If you open up the create file (phonegap-2.7.0/lib/android/bin/create) with textEdit, there is a line that lists
ANDROID_BIN=”${ANDROID_BIN:=$( which android )}”.
The “which android” is the cause of the issue
If you replace this line with the full path to your android tools (SDK), it should resolve the issue. It looked like this:
ANDROID_BIN=/Users/cswjs/Documents/Dev/adt-bundle/sdk/tools/android
OR try modify ~/.bash_profile using open ~/.bash_profile to full PATH
export PATH=${PATH}:/Users/cswjs/Documents/Dev/adt-bundle/sdk/platform-tools:/Users/cswjs/Documents/Dev/adt-bundle/sdk/tools
And use cordova create foo com.example.foo foo to create new project named foo. Make sure project name should be same.
Hope this could help someone!

IN my case there are many places in create script where u need to remove >null to see real logs. and i finally resolved my issues by
sudo chown -R sachinsharma ~/.cordova

cocos2d-2.0-rc2-x-2.0.1 Hello World sample doesn't work using cygwin on windows8

I am unable to build helloWorld sample to get .so to run it in eclipse. I have imported project successfully and changed variable to my root path as required. this is my build_native.sh. I am pasting the only change I made in that file
NDK_ROOT_LOCAL=/cygdrive/e/android-ndk-r8
COCOS2DX_ROOT_LOCAL=/cygdrive/e/cocos2d
And my NDK is working fine because I have executed HelloWorld sample of NDK successfully. My SDK version is 20 and NDK version is 8 and I am using cygwin above than 1.7.. I have executed the chown on my NDK directory.. But when I run the command ./build_native.sh in HelloWorld sample program for cocos2d I get this error
E:/android-ndk-r8/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/../lib/gcc/arm- linux-androideabi/4.4.3/../../../../arm-linux-androideabi/bin/ld.exe: ./obj/local/armeabi/png.a: No such file: Permission denied
collect2: ld returned 1 exit status
and when I search for png.a in my NDK directory window can't locate that file. I am confused whether it's a permission error or File isn't there. But I have the latest NDK if file isn't there how come anyone will able to run cocos2d-x??? Need Help!!!

It seems like the permissions on built files were missing when I tried as well.
$ ls -l obj/local/armeabi/png.a
---------- 1 someuser Domain Users 912618 Jul 12 18:23 obj/local/armeabi/png.a
There is a link suggested on the forum which doesn't seem to be accessible right now.
Anyway, to fix, you can set the permission on the files.
$ cd obj/local/armeabi/
$ chmod 664 *.a
$ cd ../../..
Edit: A better fix may be to set the default permissions in /etc/fstab to
none /cygdrive cygdrive binary,noacl,posix=0,user 0 0
Following this, you should be able to run ./build_native.sh.
A command you could use to locate all files below the current directory which have no (read/write) permission available on them is find . -type f -perm 0
See this answer to set write permissions on all files below your working directory.
Consider going through a tutorial on chmod to understand the concept of permissions in linux/unix in case you're unfamiliar with them.