barcode

问题 We are implementing GS1 linear barcodes (Code 128, Code 39) and GS1 2D barcodes (Data Matrix, PDF41 [sic]) and also GS1 DataBar barcodes in our application. Since I am new to this, I have few questions regarding GS1-type barcodes. What is the relation between GS1 standard barcodes and generic barcode symbols? Can any text be made into GS1-type barcode (e.g. GS1 DataMatrix) or does the text have to follow a certain mandatory format? Thanks in advance. 回答1: A quick nit: There is no such format

问题 I have been asked to develop a C# Winforms application that reads barcodes and processes data based on products with the relevant barcode. The barcode scanner we're using is a Symbol LS2208 usb scanner and when it came there was no instructions or cd in the box. We plugged it in, it beeped at us and were were able to scan barcode values into notepad as a test. In my application, how do I ensure that the scanner populates data into the relevant textbox (I've been setting focus after every

问题 I'm working on a project which involves taking an image file as input on my desktop and then detecting and decoding all the barcodes present, both 1D and 2D. I've been working with zxing and with the help of GenericMultipleBarcodeReader I was able to read multiple 1D barcodes from the image. However, it fails to detect 2D barcodes. But if I crop the 2D barcode and input this cropped part separately it detects and decodes it without any problem. So, if my image has 2 1D barcode and a 2D

问题 I'm using Zxing library to generate a barcode bitmap from a String numeric code with this code: public Bitmap encodeAsBitmap(String contents, BarcodeFormat format, int img_width, int img_height) throws WriterException { String contentsToEncode = contents; if (contentsToEncode == null) { return null; } Map<EncodeHintType, Object> hints = null; String encoding = guessAppropriateEncoding(contentsToEncode); if (encoding != null) { hints = new EnumMap<EncodeHintType, Object>(EncodeHintType.class);

问题 We need to parse the GS1 datamatrix barcode which will be provided by other party. We know they are going to use GTIN(01), lot number(10), Expiration date(17), serial number (21). The problems is that barcode reader output a string, the format is like this 01076123456789001710050310AC3453G321455777. Since there is not separator and both serial number and lot number are variable length according to GS1 standard, we have trouble to identify segments. My understanding is that it seems like the

问题 I am using PreviewKeyDown event on a window to receive all the keys from a barcode scanner. The KeyEventArgs is an enumeration and does not given me the actual string. I dont want to use TextInput as some of the keys may get handled by the control itself and may not bubble up to the TextInput event. I am looking for a way to convert the the Keys that I get in PreviewKeyDown to actual string. I looked at the InputManager, TextCompositionManager etc but I am not finding a way where I give the

问题 I'm printing some QR codes (from a Ruby script) writing ESC/POS commands to a Epson TM-T20 thermal printer. BTW, I'm writing a simple ESC/POS commands printer "driver". The printer I'm using an Epson TM-T20 (USB interface) I'm doing some tests from a Windows 7 host, using serialport gem. All fine about writing ESC/POS commands for print formatted texts and also linear barcodes, but I have problems uinderstanding the command protocol to print QR CODES, using the only available documentation

问题 I'm printing some QR codes (from a Ruby script) writing ESC/POS commands to a Epson TM-T20 thermal printer. BTW, I'm writing a simple ESC/POS commands printer "driver". The printer I'm using an Epson TM-T20 (USB interface) I'm doing some tests from a Windows 7 host, using serialport gem. All fine about writing ESC/POS commands for print formatted texts and also linear barcodes, but I have problems uinderstanding the command protocol to print QR CODES, using the only available documentation

问题 I want to integrate Zxing in a android project (I'm a beginner). I have seen that the way described here http://bit.ly/nBszrL is discouraged and that the best way to do it is through Intents as said in this post http://bit.ly/o29Uma p.s : I don't want the barcode scanner installed on my device I have Included on my project the required class : http://bit.ly/16pKMKx my test code : package com.example.barcodescanner; import android.os.Bundle; import android.app.Activity; import android.content

问题 I'm a newbie with Ios. i'm learning swift and overlooked object c. Currently, i'm writing an demo with swift and xcode 6.1 which can scan qrcode and barcode from camera or an image from image library. before, i tried using zbar SDK to do this, but it happened error and i didn't know how to fix it, i posted this error in post: Scan qrcode and barcode from camera and image which picked from image library in swift , but nobody answered. i'm trying using ZXingObjC to scan qrcode and barcode from