This is an Android OCR sample using tesseract. You need to do the followings:
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build http://code.google.com/p/tesseract-android-tools/ as Android library project
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checkout http://code.google.com/p/tesseract-ocr/ and copy traineddata file(s) into "/mnt/sdcard/ocrsample/tessdata/" on your Android like this:
adb push ~/src/tesseract-ocr-read-only/tessdata/eng.traineddata /mnt/sdcard/ocrsample/tessdata/