com.google.zxing.oned

类 UPCAReader

java.lang.Object

com.google.zxing.oned.OneDReader

com.google.zxing.oned.UPCEANReader

com.google.zxing.oned.UPCAReader

所有已实现的接口:

Reader

public final class UPCAReader
extends UPCEANReader

Implements decoding of the UPC-A format.

作者:

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

构造器概要

构造器

构造器和说明
UPCAReader()

方法概要

限定符和类型	方法和说明
Result	decode(BinaryBitmap image) Locates and decodes a barcode in some format within an image.
Result	decode(BinaryBitmap image, java.util.Map<DecodeHintType,?> hints) Locates and decodes a barcode in some format within an image.
Result	decodeRow(int rowNumber, BitArray row, int[] startGuardRange, java.util.Map<DecodeHintType,?> hints) Like UPCEANReader.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

reset

从类继承的方法 java.lang.Object

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

构造器详细资料

UPCAReader

public UPCAReader()

方法详细资料

decodeRow

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

从类复制的说明: UPCEANReader

Like UPCEANReader.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.

覆盖:

decodeRow 在类中 UPCEANReader

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

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

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

decodeRow

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

从类复制的说明: OneDReader

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

覆盖:

decodeRow 在类中 UPCEANReader

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

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

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

decode

public Result decode(BinaryBitmap image)
              throws NotFoundException,
                     FormatException

从接口复制的说明: Reader

Locates and decodes a barcode in some format within an image.

指定者:

decode 在接口中 Reader

覆盖:

decode 在类中 OneDReader

参数:

image - image of barcode to decode

返回:

String which the barcode encodes

抛出:

NotFoundException - if no potential barcode is found

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

decode

public Result decode(BinaryBitmap image,
                     java.util.Map<DecodeHintType,?> hints)
              throws NotFoundException,
                     FormatException

从接口复制的说明: Reader

Locates and decodes a barcode in some format within an image. This method also accepts hints, each possibly associated to some data, which may help the implementation decode.

指定者:

decode 在接口中 Reader

覆盖:

decode 在类中 OneDReader

参数:

image - image of barcode to decode

hints - passed as a Map from DecodeHintType to arbitrary data. The meaning of the data depends upon the hint type. The implementation may or may not do anything with these hints.

返回:

String which the barcode encodes

抛出:

NotFoundException - if no potential barcode is found

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