com.google.zxing.oned

类 UPCEANReader

java.lang.Object

com.google.zxing.oned.OneDReader

com.google.zxing.oned.UPCEANReader

所有已实现的接口:

Reader

直接已知子类:

EAN13Reader, EAN8Reader, UPCAReader, UPCEReader

public abstract class UPCEANReader
extends OneDReader

Encapsulates functionality and implementation that is common to UPC and EAN families of one-dimensional barcodes.

作者:

dswitkin@google.com (Daniel Switkin), Sean Owen, alasdair@google.com (Alasdair Mackintosh)

方法概要

限定符和类型	方法和说明
Result	decodeRow(int rowNumber, BitArray row, int[] startGuardRange, java.util.Map<DecodeHintType,?> hints) Like decodeRow(int, BitArray, java.util.Map), but allows caller to inform method about where the UPC/EAN start pattern is found.
Result	decodeRow(int rowNumber, BitArray row, java.util.Map<DecodeHintType,?> hints) Attempts to decode a one-dimensional barcode format given a single row of an image.

从类继承的方法 com.google.zxing.oned.OneDReader

decode, decode, reset

从类继承的方法 java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

方法详细资料

decodeRow

public Result decodeRow(int rowNumber,
                        BitArray row,
                        java.util.Map<DecodeHintType,?> hints)
                 throws NotFoundException,
                        ChecksumException,
                        FormatException

从类复制的说明: OneDReader

Attempts to decode a one-dimensional barcode format given a single row of an image.

指定者:

decodeRow 在类中 OneDReader

参数:

rowNumber - row number from top of the row

row - the black/white pixel data of the row

hints - decode hints

返回:

Result containing encoded string and start/end of barcode

抛出:

NotFoundException - if no potential barcode is found

ChecksumException - if a potential barcode is found but does not pass its checksum

FormatException - if a potential barcode is found but format is invalid

decodeRow

public Result decodeRow(int rowNumber,
                        BitArray row,
                        int[] startGuardRange,
                        java.util.Map<DecodeHintType,?> hints)
                 throws NotFoundException,
                        ChecksumException,
                        FormatException

Like decodeRow(int, BitArray, java.util.Map), but allows caller to inform method about where the UPC/EAN start pattern is found. This allows this to be computed once and reused across many implementations.

参数:

rowNumber - row index into the image

row - encoding of the row of the barcode image

startGuardRange - start/end column where the opening start pattern was found

hints - optional hints that influence decoding

返回:

Result encapsulating the result of decoding a barcode in the row

抛出:

NotFoundException - if no potential barcode is found

ChecksumException - if a potential barcode is found but does not pass its checksum

FormatException - if a potential barcode is found but format is invalid