com.google.zxing.qrcode

类 QRCodeReader

java.lang.Object

com.google.zxing.qrcode.QRCodeReader

所有已实现的接口:

Reader

直接已知子类:

QRCodeMultiReader

public class QRCodeReader
extends java.lang.Object
implements Reader

This implementation can detect and decode QR Codes in an image.

作者:

Sean Owen

构造器概要

构造器

构造器和说明
QRCodeReader()

方法概要

限定符和类型	方法和说明
Result	decode(BinaryBitmap image) Locates and decodes a QR code in an image.
Result	decode(BinaryBitmap image, java.util.Map<DecodeHintType,?> hints) Locates and decodes a barcode in some format within an image.
void	reset() Resets any internal state the implementation has after a decode, to prepare it for reuse.

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

QRCodeReader

public QRCodeReader()

方法详细资料

decode

public Result decode(BinaryBitmap image)
              throws NotFoundException,
                     ChecksumException,
                     FormatException

Locates and decodes a QR code in an image.

指定者:

decode 在接口中 Reader

参数:

image - image of barcode to decode

返回:

a String representing the content encoded by the QR code

抛出:

NotFoundException - if a QR code cannot be found

FormatException - if a QR code cannot be decoded

ChecksumException - if error correction fails

decode

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

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

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

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

reset

public void reset()

从接口复制的说明: Reader

Resets any internal state the implementation has after a decode, to prepare it for reuse.

指定者:

reset 在接口中 Reader