Writing out structured array QR code, in my case, pages of QR code was fixed to 4 and data size per code was fixed, so I didn’ t create function to automatically split data to multiple QR codes. It’s best if library handles one big data to be encoded, and automatically split into appropriate QR codes, and return multiple QR code bitmaps, but this will need big modification in source code. I only made modification to Zxing source code as follow: Add function name to create structured array QR code Add flag, current page, total page, and parity to header data Split data, calculating pages, and parity is done on …

Reading structured array isn’t difficult; you can use Zxing library as is. Below is part of source code from my Animal Crossing designer app. Data is decoded to Binary (since QR data is binary in Animal Crossing), and decodeHint parameter is set that way. For structured array QR code, total pages, current page, and other info is written in header part. To get header data, above getRawBytes() function is used. This function returns all raw QR code data including header data. For structured array QR code, leading 5 bytes has following data. 4bit on left side of 0 byte in QR code header is 3 N is current number of …