15+ How To Scan Qr Code Tealive
Pics. What are qr codes and how do they work? How to scan a qr code.
Here is how to use any smartphone especially android to read qr codes easily with step by step directions shown.
They were invented by denso wave in 1994. As the codes come back with new uses, it's a good idea to make sure that your phone knows how to scan them. How to scan a qr code. In the above code snippet, i have invoked showdialog() method from catch block, that will show an alertdialog for asking to install barcode scanner app from google play.
