this is an app for generate an QRCode and it can also scan the QRCode
A QR code is a pattern of black and white squares that can be read by a smart phone, allowing the phone user to get more information about something. QR code is an abbreviation for ' Quick Response code'.
ZXing (“zebra crossing”) is a barcode image processing library implemented in Java, with ports to other languages. It has support for 1D product, 1D industrial, and 2D barcodes.
ZXing is used by web search to make millions of barcodes on the web indexable. It also forms the basis of Android’s Barcode Scanner app and is integrated into Google Product and Book Search.
it's simple to use it just you add this ligne in the gradle file if you don't have it
implementation 'me.dm7.barcodescanner:zxing:1.9'
and you can start to scanning any QRcode or Barrecode