How to setup openFrameworks for Android on Windows

How to setup openFrameworks for Android on Windows

Notes

This is a tutorial on how to setup openFrameworks for Android on Windows. The current tutorial only explains how to do this using Linux or Mac OS X.

* update September 2012 *

My MinGW patches for openFrameworks 0071 are now merged into the develop branch of openFrameworks.

Last update: 11-09-2012

* update August 2012 *

I’ve fixed openFrameworks 0071 for MinGW on my branch (which will hopefully merged into the develop branch soon):
https://github.com/falcon4ever/openFrameworks/commits/develop-0071-android-r8b-mingw

Requirements

1. Eclipse (with CDT plugin)
2. Installed JDK (Java SE 7 Update 5) – I am using the x64 version but if you run into problems give x86 a try.
3. Android SDK
4. Installed ADT Plugin for Eclipse
5. Android NDK (this tutorial uses r8b)
6. Apache ANT
7. Git/TortoiseGit

Setup environment

1. Install MinGW/MSYS

Install MinGW and MSYS according to this tutorial:
How to install MinGW, MSYS and Eclipse on windows
(Don’t forget to install the ADT plugin as well)

2. Setup SDKs and PATHS
After downloading the Android NDK, the Android SDK and Apache ANT, unzip them to the following locations:

• C:\Development\android-ndk-r8b
• C:\Development\android-sdk
• C:\Development\apache-ant-1.8.4

note: The locations don’t need to match these, but it is best to put them in a similar location.

If you used the SDK installer instead of the zip package, you might want to create a symbolic link to prevent issues with spaces in the path. Run cmd.exe as Admin:

cd\Development mklink /D android-sdk "C:\Program Files (x86)\Android\android-sdk"

3. Setup JDK

• Add C:\Program Files\Java\jdk1.7.0_05\bin to the PATH variable (if you are using a different version of the JDK, adjust the path accordingly)
  
• Set the JAVA_HOME system variable to the directory of your JDK installation: C:\Program Files\Java\jdk1.7.0_05


4. Clone openFrameworks from Github

• Download openFrameworks (develop)
• I’ll be installing openFrameworks into: C:\temp\OF

• git clone -b develop git://github.com/openframeworks/openFrameworks.git

5. Edit the paths.make file

• Find paths.make.default in the folder openFrameworks\libs\openFrameworksCompiled\project\android
• Copy or rename it to paths.make
• Change the content to:

NDK_ROOT=C:/Development/android-ndk-r8b SDK_ROOT=C:/Development/android-sdk ANT_HOME=C:/Development/apache-ant-1.8.4 ANT_BIN=$(ANT_HOME)/bin/

If you use different versions, be sure to set the correct path!

6. Update the ofAndroidLib project

• Open up the commandline (start -> cmd.exe)
• Run:

  C:/Development/android-sdk/tools/android.bat update project --target android-8 --path C:\temp\OF\addons\ofxAndroid\ofAndroidLib

7. Open Eclipse

• Workspace location: C:\temp\OF\examples\android

8. Set eclipse java compiler compliance to 1.5

• Window > Preferences > Java > Compiler

9. Set Android SDK Location (optional)

• Window > Preferences > Android
• Enter: C:\Development\android-sdk (Or use the one in program files)
• It should list the Android 2.2 target, if not, use the Android SDK and AVD manager to install it.

Note: This step might not be required if your Android development environment is already set up.

10. Import openFrameworks into Eclipse

Import the following projects (existing projects option in the import dialog):

• C:\temp\OF\libs
• C:\temp\OF\libs\openFrameworks
• C:\temp\OF\addons\ofxAndroid\ofAndroidLib
• C:\temp\OF\examples\android

Note: You might want to turn off autobuild before adding these projects (Project > Build Automatically)

11. Switch to the C++ view

• Window > Open Perspective > Other > C++
• Select the openFrameworks project on the left
• Click the hammer icon (the triangle) to change the build target from Linux to Android
• Click the hammer icon to build the project (This might take a while to build).
  

When it is done, check the following location: C:\temp\OF\libs\openFrameworksCompiled\lib\android

It should contain the following files:

• armeabi\libopenFrameworks.a
• armeabi\libopenFrameworksDebug.a
• armeabi-v7a\libopenFrameworks.a
• armeabi-v7a\libopenFrameworks_arm7.a

Manage run configurations

• Select a project on the left (e.g. androidPolygonExample)
• Run > External Tools > External Tools Configuration
• The following dialog should now appear:

• Select program and press New, name the new configuration: Android Install

On the Main tab, use these settings:

• Location: C:\MinGW\msys\1.0\bin\make.exe
• Working Directory: ${project_loc}
• Arguments:

  AndroidInstall PROJECT_PATH=C:/temp/OF/examples/android/${project_name}

On the Refresh tab, use these settings:

• Mark Refresh resources upon completion
• Select The selected resource

On the Build tab, use these settings:

• Mark Build before launch
• Select The project containing the selected resource
• Mark Include referenced projects

Press Apply and Close

Running an example

• Connect your device
• Make sure that the device is recognized. You can do this by typing “adb devices” in the commandline (terminal)
  ( C:\Development\android-sdk-windows\platform-tools>C:\Development\android-sdk-windows\platform-tools\adb.exe devices )
• Select an example on the left side
• Change the target to AndroidRelease
• Run > External Tools > Android Install
• Eclipse should start building the application and will transfer the apk file to your Android device (it will automatically launch the app).
• Done!

FAQ

• Question: I’m getting an error about pkg-config when I try to launch the app (but it works fine)
• Answer: http://www.mingw.org/wiki/FAQ
• “How do I get pkg-config installed? The difficulty in getting pkg-config installed is due its circular depency on glib. To install pkg-config, you should first install the GTK-runtime, the installer is found at http://www.gtk.org/download/win32.php. The pkg-config binary can be obtained from pkg-config_0.23-3_win32.zip. Place pkg-config.exe in your MinGW bin directory.“

 

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