Extended the MMAD2021 ShoppingBarcode found here
Included CameraX implementation and relied on this tutorial for a Java implemetation
Followed the ML Kit instructions to scan barcodes using the device camera: Scan Barcodes with ML Kit on Android
Relied on Android Programming: The Big Nerd Ranch Guide (3rd Edition) Chapter 5 to correctly handle intent results. Same information can be found in this year's online resources here.