I need to add barcode reading feature to my application. I donot know how to enable my application to read barcodes.
I mean a scanner should read the barcode and having matched the article no. in database, info should be displayed on the screen.
Any code examples please?
Thanks
Most barcode scanners act like a keyboard.
There isn't anything special required.
Some scanners can send special key sequences so that you can focus the appropriate text field.
Related
I am using Fabric events to record some events, the content of event is using other language instead of English, it is displayed as some sort of wrong encoded text from Fabric portal(Fabric.io), unreadable. How can we solve this issue? Thanks a lot.
Is there any way to add alt text to a text element in iText? I have seen there is a way to do it for images. Basically, I would like the screen reader to read something besides the actual text that is being displayed. There are two situations in my document that I would need to do this.
One is when the screen-reader is reading an acronym I would like the alt-text to force the screen reader to read each letter instead of trying to read a word. (ie read DIET as D-I-E-T instead of diet)
The second is when it is reading a phone number I would like it to read outloud "phone" before the number. In the document it is currently just the number which would be a little confusing for disabled users. I am unable to actually change the layout to include the word "phone" for non-technical reasons.
There is a method for that.
new Paragraph("Lorem").getAccessibilityProperties().setActualText("Ipsum")
You can call this method on every class that implements IAccessibleElement.
I have ticketing system that I use for students who do consultation with their teachers. The system is working right now, the teacher need to input ticket number which is generated by students.
I want to change the way, I want the ticket number is shown as QRCode, and what the teacher need to do just scan the QRCode thru the camera of their laptop. So it's like replace the way they input the ticket number, from typing the ticket number to just scan the QRCode.
The simplest way to do that is with old-fashioned barcodes.
If the ticket number is short enough (up to 14 digits), you can format it as a EAN13 barcode (13 digits + control).
The number conversion is trivial to make (just Google "generate EAN13" + your programming language)
EAN13 barcodes can be rendered as text with this TTF font: http://www.fontpalace.com/font-details/EAN-13/
Almost every QR reader understand linear barcodes
You can get a Barcode Scanner Gun for 25$. They are plugged via USB, detected as USB keyboards, they input scanned codes as if you typed them and they are fast as hell!
I think you are looking for a scanner soft keyboard. It scans the barcode / qr and set the result in input the same like you typed it.
In example this keyboard
https://play.google.com/store/apps/details?id=com.nikosoft.nikokeyboard
It has the config option to scan and automatically send an Enter keyboard event.
I successfully use it on a telegram bot to similar functionality and I think is a very simple solution.
Does any one know how to set F6 to be a preamble on barcode scanner FS9800? The recommended keyboard configuration way is not working for us. The text editor display the message "F1-F10.....", but when using the arrow keys - nothing expected happens. May be some one has a code I can simply zip to force the setting?
Thanks.
I'm trying to build a web app to programmatically fill out a PDF form. I am going to configure my form first in Adobe Acrobat, then write a Java app with iText to fill out all the form fields via user input from the web. The base form I need to fill out comes from the US government. They created form fields with extremely large kerning (character spacing) values I need to change. However, there appears to be no way to modify this value in the Acrobat UI.
Does anyone know how to manipulate character spacing on form fields in Acrobat 8.0 for Windows? I could try to use iText to programmatically manipulate the kerning of the original document, but this would be much more tedious.
I believe I figured this out: kerning is called "combing" in acrobat, and each of the form fields have been "combed". The strange thing is this option isn't checked when I view the properties of the form field, but "combing" is the behaviour I was attempting to replicate.