Android Developers Blog: Gingerbread NDK Awesomeness: "With the latest version of the NDK we intend to further increase the awesomeness of your applications, this time by a pretty big margin. With NDK r5, we’re introducing new APIs that will allow you to do more from native code. In fact, with these new tools, applications targeted at Gingerbread or later can be implemented entirely in C++; you can now build an entire Android application without writing a single line of Java."