BarcodeScanner | Android手机客户端关于二维码扫描的源码，使用了zxing | Barcode Processing library

I want to have an Expo BarCodeScanner inside of a view on a screen.

I've been using vw and vh for width and height because I want it to change based on the amount of screen space I have. I've tried putting a border around it but it never shows up. I've tried putting it on the view around the barcodescanner as well as the scanner itself.

Here is the code snippet of my barcodescanner as well as the corresponding styles and screenshot.

so here is the thing. after scanning 3 different barcodes. i have created a button that will show the value of those. So it is like this.

i am trying to get the info of the following barcodes using a "get button" on them.

first, i scan the barcode then put it on a list. using this

Tech stack: Expo, React-Native Using: expo-barcode-scanner

I am trying to create an app that will scan a QR code and then display the info from the QR code on the screen, preferably in a modal so I can display an image.

I've created an app that will do that... except that it uses an alert function to show the text. How can I change it to a modal? When I try to change it to modal, or return a modal it doesn't work.

My code:

i have a constant array in which i push variables and then when i navigate to another page and go back to the first one, i find the same elements in the array the const doesnt get back it's first values. i need it to be an empty array every time i navigate to that page. i even tryed to clear it myself in the function cleartab with array.slice with array.filter... but nothing worked for me. this is the code :

I am deveoping an app in Flutter using GetX state management, but having a difficult time getting address from GPS on the spot. I am using Geocoder and geolocator to fetch latitude, longitude, and address based on coordinates. I have a Floatingactionbutton that scans a barcode and adds some data to Firestore: latitude, longitude, and address.

The problem I am having is I am seeing data like this adding to Firestore(below). Sometimes I have to scan like 3 times before the address and coordinates are added to firestore. How do I make sure the coordinates and address are fetched first before adding to firestore. Using a stateful widget I believe I could do it in the initstate?

'''

So i followed googles tutorial for their barcode scanner (this one) and the qr scanning works like a charm. The only problem is that i don't need qr codes but rather bar codes. But they don't work. It doesn't detect anything. I tried multiple online bar codes and ones from around the house but none got recognised as a barcode.

this is the code in my activity that handles the image and scanner:

I am using flutter package

barcode_scan: any

for scanning barcode using my scanner to record data using flutter desktop support, but this extension asking me for camera even i have scanner to scan barcode code sample that i am using.

I'm trying to make a simple application with ionic (angular) and I have this problem : I have an HTML table looped with ngFor and I have a condition to verify in the ts file if this condition is true I want only one line to change his style and give the green background-color and like a default the background of all the line is red

in my case, if the condition this true all the line of the table "" will be green

here the HTML file