------------------------------ I need to create button scan QR this button will call qr reader program to check image and then retrieve message as url to web activity page when i press in button it will search for qr reader is installed in my mobile or not IF qr reader installed in my mobile open camera and check the image and then send the result to web page activity as URL IF qr reader not installed open google play to search and install in it How i do that by code please help me *What i need actually by code* call program QR reader from my app IF it is installed in my mobile check image as this link HTTP://WWW-code-generator.com/ <http://www-code-generator.com/> and send result words to web activity page as URL IF it is not installed go to google play to install it can you help me in that by code
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