This has been discussed before - here are some tips:
http://groups.google.com/group/tesseract-ocr/browse_frm/thread/5f5c574473439f58
Android is a Java-based platform running on a Linux kernel underneath.
You would need to use JNI or something. That is why some people have
suggested a re-write in pure Java... not realizing that Tesseract
represents hundreds of man-years of coding and sweat. :-)
Regards.