com.google.zxing.qrcode.decoder

类 Decoder

java.lang.Object

com.google.zxing.qrcode.decoder.Decoder

public final class Decoder
extends java.lang.Object

The main class which implements QR Code decoding -- as opposed to locating and extracting the QR Code from an image.

作者:

Sean Owen

构造器概要

构造器

构造器和说明
Decoder()

方法概要

限定符和类型	方法和说明
DecoderResult	decode(BitMatrix bits)
DecoderResult	decode(BitMatrix bits, java.util.Map<DecodeHintType,?> hints) Decodes a QR Code represented as a BitMatrix.
DecoderResult	decode(boolean[][] image)
DecoderResult	decode(boolean[][] image, java.util.Map<DecodeHintType,?> hints) Convenience method that can decode a QR Code represented as a 2D array of booleans.

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

Decoder

public Decoder()

方法详细资料

decode

public DecoderResult decode(boolean[][] image)
                     throws ChecksumException,
                            FormatException

抛出:

ChecksumException

FormatException

decode

public DecoderResult decode(boolean[][] image,
                            java.util.Map<DecodeHintType,?> hints)
                     throws ChecksumException,
                            FormatException

Convenience method that can decode a QR Code represented as a 2D array of booleans. "true" is taken to mean a black module.

参数:

image - booleans representing white/black QR Code modules

hints - decoding hints that should be used to influence decoding

返回:

text and bytes encoded within the QR Code

抛出:

FormatException - if the QR Code cannot be decoded

ChecksumException - if error correction fails

decode

public DecoderResult decode(BitMatrix bits)
                     throws ChecksumException,
                            FormatException

抛出:

ChecksumException

FormatException

decode

public DecoderResult decode(BitMatrix bits,
                            java.util.Map<DecodeHintType,?> hints)
                     throws FormatException,
                            ChecksumException

Decodes a QR Code represented as a BitMatrix. A 1 or "true" is taken to mean a black module.

参数:

bits - booleans representing white/black QR Code modules

hints - decoding hints that should be used to influence decoding

返回:

text and bytes encoded within the QR Code

抛出:

FormatException - if the QR Code cannot be decoded

ChecksumException - if error correction fails