Barcode Reader not working in specific app

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Posted on by CU10040401-0

I'm trying to use a barcode reader in an app I'm building, and no matter what I do the scanner won't return any value. I'm using the following code in the 'On Scan' property of the scanner:

Set(barcodeValue, Text(First(BarcodeReader1.Barcodes).Value));

This value is initially blank, and after scanning, remains blank. To try troubleshoot the issue, I made a brand new app and tried the same method... and it worked perfectly. It's just in this one app that the reader won't return anything. Anyone have any idea how I might fix this? I've tried removing/re-adding the reader control multiple times, but with no luck. All values other than 'On Scan' are default.

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Building Power Apps

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IanJB 93 on at

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I had this same problem come up, but for apps that had been operating successfully for months. All of my apps that use the new [not so new anymore] modern barcode reader control just stopped working. In the canvas studio the test data populates fine, but when any user tried on a mobile device nothing was returned, whether I was just trying to access the first barcode value or assigning it to a variable (like in your Set example).

I noted that my old apps were still working fine - those that had ye'ol barcode scanner control. Luckly we can still access this tool in the retired settings. I just replaced the modern reader with the old scanner and everyone is back up and running. No idea why this stopped working though, which is frustrating!

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jjacquet 21 on at

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Seconding this with the hope of raising visibility.

We are using the barcode reader control and returning values to a collection (multiple scans; code below). We don't want to rely on a retired control for this.

We have some users who hit 'submit' and get both the Type and Value as expected, but others get only the Type and Value is blank.

Searching everywhere for some sort of answer here.

Collect(

ScannedItems,

btnBarcodeReader.Barcodes

);

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onparr24 23 on at

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I am also experiencing issues with the barcode reader. I have 50+ users and have been using the barcode reader without any issues until today. It seems to be sporadically working. Any suggestions are welcome!

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NP-02081205-0 2 on at

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We have just found that this only effected users that installed Powers Apps on devices on the 1 Aug 2024. Removing and reinstalling the app on each device solved this issue. This also works if you run the update now avalible for Power Apps in the devices app store.

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