The NDK is a set of tools you use to develop native code for your application. Everything is in a single directory, which you download as an archive file from
http://d.android.com/sdk/ndk. For example, the Windows version of the NDK revision 6b contains these directories:
A few files are also located at the root of the NDK directory:
The NDK documentation is nowhere near as thorough as the SDK on
http://d.android.com, so start by opening documentation.html with your favorite web browser. The README text file is also begging you so go ahead and oblige.
The NDK is a collection of six components: ...