Install Android NDK on Windows

1. Download Android NDK

• Download latest version of NDK from http://developer.android.com/tools/sdk/ndk/index.html 
• Decompress it and put NDK folder anywhere you want. For my example: D:\SDK\android-ndk-r9d

2. Install CDT for Eclipse

• Open Eclipse, Help-->Install New Software
• Press "Add"
• Name: CDT(whatever you want), Location: http://download.eclipse.org/tools/cdt/releases/kepler
• Check "CDT Main features"
• Press Next to install.

3. Install NDK Plugin for Eclipse

• Open Eclipse, Help-->Install New Software
• Search for https://dl-ssl.google.com/android/eclipse/ in "Work with", if you can't find one, just press "Add" to add it.
• Check "NDK plugins"
• Press Next to install.

4. Setup NDK

• Restart Eclipse, if you just complete all steps above.
• Window-->Preferences-->Android-->NDK
• Enter the NDK decompressed path, for my example: D:\SDK\android-ndk-r9d

5. Install Cygwin

• Download latest version of Cygwin from http://www.cygwin.com
• Execute setup.exe you downloaded.
• Next-->Select "Install from Internet"
• Select your Root Directory, in my example: C:\cygwin64\
• Next-->Local Package Directory
• Next-->Next-->select a download server
• Next-->Start to download and install
• When Select Packages, please change "Devel" to "Install"
• Next-->Finish
• How to verify your cygwin:

A. Go to your cygwin installed path (Root Directory), for my example: C:\cygwin64\

B. Execute C:\cygwin64\cygwin.bat

make -v

You should see your GNU Make version.

gcc -v

You should see your gcc version.

Finished, you can build your JNI now!!!!!