barcode

问题 I've been using the native barcode scanner functionality provided by apple since iOS7 and it is great, but I needed to scan some static images I had so I could automatically catalogue some barcodes. I couldn't find a way to do this natively, so I used an open source package called zBar, and for the most part, it works fine. However, it returns false values often and sometimes flat out fails to find the barcode. I also built the c++ library from scratch but I got the same results in my OS X

问题 Does anybody have any idea about the differences between barcode fonts (used as a font in reports) and fonts that are printed directly from a barcode printer? Why should we put a star before and after the barcode font? It's my understanding that we don't need that when we use a barcode printer... why not? 回答1: The star character is part of the specification for Code 39. It is used as a delimiter for the barcode itself. Barcode readers will not recognize the code if the stars are not present.

问题 Good Day All, I am trying to get barcodes to print correctly in SSRS. I have the correct font installed on the report server and on the machine printing the report, the barcodes look correct on the screen but when you go to print the report it puts spaces in the barcodeand distorts it making it unreadable. How can I fix this issue without a ton of coding or complex solutions? Thanks 回答1: Not a direct answer to your question and I am not an expert in barcode. However following is what we are

问题 Using this library, ZXing, we have a project at school in which we'll implement a inventory system using Android phones. We aim to use an Android phone to be a inexpensive replacement to this: I've read some of the warnings on the FAQ for certain phones. Is there a specific phone that Android developers prefer (with use of the ZXing library in mind)? We have to buy the phone ourselves, so we would prefer not to buy the wrong phone! 回答1: You want phones with auto-focus capability on their

问题 I am working to integrate POS system to my site. So I want to generate barcode. I am using SKU as the data fields to encode the formate is XXXXX-XXX-XXX-XXX . X is a digit from 0 to 9 so after doing research I found code 128 is the best correct me if I am wrong. The problem with size, The label on items are 2' by 3 1/2' inches, when I generate barcode using barbecue and resize the image the scanner cannot read the barcode. So could you please explain what is the size constrains and what is

问题 How can I emulate keyboard press once I scanned a barcode using a usb barcode scanner? I don't have any idea about this and I just want to get some suggestions/instructions on how can I do it. If I have this form, how will the barcode number be inputted in that textbox? thanks! <form method="post" action=""> <input type="text" id="barcode-input" name="barcode-input" value=""/> </form> 回答1: The barcode scanners that I have seen (not that many I have to admit) act like a keyboard. Old ones even

问题 I have an app, i used this code to integrate zxing public Button.OnClickListener mScan = new Button.OnClickListener() { public void onClick(View v) { Intent intent = new Intent("com.google.zxing.client.android.SCAN"); intent.putExtra("SCAN_MODE", "QR_CODE_MODE"); startActivityForResult(intent, 0); } }; public void onActivityResult(int requestCode, int resultCode, Intent intent) { if (requestCode == 0) { if (resultCode == RESULT_OK) { String contents = intent.getStringExtra("SCAN_RESULT");

问题 My application is developed in Delphi 6. This is a resource intesive application due to background processing and large volume of data (It consumes around 60MB - 120MB of physical memory). One of the functionality of this application is to create barcode images after doing certain procesing. If user keeps on generating the Barcodes, then at least One out of Ten Barcode has missing lines in it. We have following steps in generating the output: Create a Barcode image (TImage) in the memory. The

问题 I am trying to generating IDAutomationHC39M for number 50 or 51 the barcode for that gets generated but on scanning I am not able to get the Detail number for that. Same way I am able to create the barcode for 14757 and in that case I am able to scan that barcode properly. How should I scan 2 digit generated Barcodes. Is there some thing I am doing wrong in below code. public void generateBarcode(int id) { if (plBarCode != null) { string barCode = ""; barCode = Convert.ToString(id); System

问题 Using iReport 2.0.2. I have a barcode font that I would like to use, but the first problem is that it isn't included in iReport. I tried to work around the problem by using the barcode font as a regular font and it works fine, but the problem appears when I send the PDF to a component (pdfBox) that sends the PDF directly to printer. The component can't recognize the font (it's long story and not relevant) even though it's embeded and reverts the barcode to Arial. What I would need is to