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QR Label scanning(Barcode scan) multiple backend calls issue

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Hi,

 

I am developing the UI for barcode reading device Zebra TC75 , which is an andriod mobile attached with laser scanner to read the bar codes.

 

 

This device automatically sets the scanned value on current focused input field(cursor). I have used liveChange function in that field which triggers multiple times after the scanned value is set. This is does not happen on desktop version of UI where i just paste the QR code into the input field and only one backend call is hit. I could not find the drivers for this device to enable USB debugging. I have used a JQuery delay of 3 seconds after scanning the QR code to avoid sending truncated value to the backend.  I have searched on SCN for any ideas related to this issue, but i could not find one.

 

Currently i am using flags to avoid multiple backend calls, but still there is one extra call going. 

 

This a new development for me and i am unable figure out the issue with multiple calls.

 

Everything works fine on Desktop UI, but things behave differently on Mobile.

 

 

Can anyone please suggest a solution for this issue. Its urgent.

 

 

Thanks,

 

Saurabh.


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