问题:

Client wants a button on the mobile web app that launches a QR code scan (with camera on iPad) then returns to the mobile web app with the QR code info. Wondering how best to achieve this and/or if it's even possible. Thanks!

回答1:

Yes, see the zxing: URL format here.

回答2:

Not really possible, sorry.

The closest you can get is some apps have a URL scheme (redlaser://, for example) that you could provide a link to. There's no way of detecting that they've got the app installed, though.

回答3:

The best thing would be to use a bluetooth barcode scanner. Something like Socket scan , CX2864-1336 would work for well for this. I've seen it used with an ipad to manage inventory.

回答4:

Seems like that would require two separate native applications. Both using URL schemes to jump to the other and pass information. If you have a web app and check for a QR code scanner's URL scheme it's totally possible for your web app to launch a QR code scan but passing data back would require a native app. Oh, and I'm not sure if there are any QR code apps with a scheme.