How do I write in list view with label?

MIT App Inventor Help
1

Hi,
I want to be able to scan a number in QR so the result will appear in the filter bar (and the list view will show me the correct elements {this I know how to do}).

thank you.

2

Hello Make

So what have you tried? App Inventor's Barcode Scanner Blocks?

http://ai2.appinventor.mit.edu/reference/components/sensors.html#BarcodeScanner