title: How make QR code from object of a class or several data
body: <p>I was looking for QR code example. And I found the below link for creating QR code from a string. <a href="https://stackoverflow.com/a/15510698/2751449">This solution</a> is working fine but if I have a class lets say Student and have fields: id,name,phone. Then create an object of Student class and want to make QR code out of all the info of an object(Which should be information of 1 student). </p>
  
  <p>How am I going to do it? And after making the QR code, how am I going to retrieve it back to the original object?</p>