问题
Using ZXing (on Android), if you initiate a PDF417 barcode scan like this...
List<String> oDesiredFormats = Arrays.asList("PDF_417".split(","));
IntentIntegrator integrator = new IntentIntegrator(this);
integrator.initiateScan(oDesiredFormats);
... and you initiate an "all codes" (except PDF417 and maybe a few others) barcode scan like this...
IntentIntegrator integrator = new IntentIntegrator(this);
integrator.initiateScan();
... then how do you initiate a single barcode scan that will recognise both (all the standard codes, and PDF417)? Thanks in advance!
回答1:
If you don't specify it, it will default to scanning for whatever the user has configured. This by default includes most formats but not PDF417. So, I think you'd have to enumerate all the formats here. It's not too hard, but do you really want that? usually you have a use case that is scanning for a few related formats at most.
来源：https://stackoverflow.com/questions/22567698/zxing-pdf417-all-code-types