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All I need is to write a code using zxing library to integrate barcode scanner into my app. basically, a button when is hit open the camera to scan the QRcode without having to download barcode scanner. I wrote a code that shows how to scan QR code but i had to use intent to call barcode scanner which is kind of lame because I don't want a user to have to go through long process.
Note: you have to use zxing. I could send you the code i wrote if you like.