com.google.zxing

枚举 EncodeHintType

java.lang.Object

java.lang.Enum<EncodeHintType>

com.google.zxing.EncodeHintType

所有已实现的接口:

java.io.Serializable, java.lang.Comparable<EncodeHintType>

public enum EncodeHintType
extends java.lang.Enum<EncodeHintType>

These are a set of hints that you may pass to Writers to specify their behavior.

枚举常量概要

枚举常量

枚举常量和说明
AZTEC_LAYERS Specifies the required number of layers for an Aztec code.
CHARACTER_SET Specifies what character encoding to use where applicable (type String)
DATA_MATRIX_SHAPE Specifies the matrix shape for Data Matrix (type SymbolShapeHint)
ERROR_CORRECTION Specifies what degree of error correction to use, for example in QR Codes.
MARGIN Specifies margin, in pixels, to use when generating the barcode.
MAX_SIZE 已过时。 without replacement
MIN_SIZE 已过时。 use width/height params in DataMatrixWriter.encode(String, BarcodeFormat, int, int)
PDF417_COMPACT Specifies whether to use compact mode for PDF417 (type Boolean, or "true" or "false" String value).
PDF417_COMPACTION Specifies what compaction mode to use for PDF417 (type Compaction or String value of one of its enum values).
PDF417_DIMENSIONS Specifies the minimum and maximum number of rows and columns for PDF417 (type Dimensions).
QR_VERSION Specifies the exact version of QR code to be encoded.

方法概要

限定符和类型	方法和说明
static EncodeHintType	valueOf(java.lang.String name) 返回带有指定名称的该类型的枚举常量。
static EncodeHintType[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

ERROR_CORRECTION

public static final EncodeHintType ERROR_CORRECTION

Specifies what degree of error correction to use, for example in QR Codes. Type depends on the encoder. For example for QR codes it's type ErrorCorrectionLevel. For Aztec it is of type Integer, representing the minimal percentage of error correction words. For PDF417 it is of type Integer, valid values being 0 to 8. In all cases, it can also be a String representation of the desired value as well. Note: an Aztec symbol should have a minimum of 25% EC words.

CHARACTER_SET

public static final EncodeHintType CHARACTER_SET

Specifies what character encoding to use where applicable (type String)

DATA_MATRIX_SHAPE

public static final EncodeHintType DATA_MATRIX_SHAPE

Specifies the matrix shape for Data Matrix (type SymbolShapeHint)

MIN_SIZE

@Deprecated
public static final EncodeHintType MIN_SIZE

已过时。 use width/height params in DataMatrixWriter.encode(String, BarcodeFormat, int, int)

Specifies a minimum barcode size (type Dimension). Only applicable to Data Matrix now.

MAX_SIZE

@Deprecated
public static final EncodeHintType MAX_SIZE

已过时。 without replacement

Specifies a maximum barcode size (type Dimension). Only applicable to Data Matrix now.

MARGIN

public static final EncodeHintType MARGIN

Specifies margin, in pixels, to use when generating the barcode. The meaning can vary by format; for example it controls margin before and after the barcode horizontally for most 1D formats. (Type Integer, or String representation of the integer value).

PDF417_COMPACT

public static final EncodeHintType PDF417_COMPACT

Specifies whether to use compact mode for PDF417 (type Boolean, or "true" or "false" String value).

PDF417_COMPACTION

public static final EncodeHintType PDF417_COMPACTION

Specifies what compaction mode to use for PDF417 (type Compaction or String value of one of its enum values).

PDF417_DIMENSIONS

public static final EncodeHintType PDF417_DIMENSIONS

Specifies the minimum and maximum number of rows and columns for PDF417 (type Dimensions).

AZTEC_LAYERS

public static final EncodeHintType AZTEC_LAYERS

Specifies the required number of layers for an Aztec code. A negative number (-1, -2, -3, -4) specifies a compact Aztec code. 0 indicates to use the minimum number of layers (the default). A positive number (1, 2, .. 32) specifies a normal (non-compact) Aztec code. (Type Integer, or String representation of the integer value).

QR_VERSION

public static final EncodeHintType QR_VERSION

Specifies the exact version of QR code to be encoded. (Type Integer, or String representation of the integer value).

方法详细资料

values

public static EncodeHintType[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (EncodeHintType c : EncodeHintType.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static EncodeHintType valueOf(java.lang.String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

java.lang.IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

java.lang.NullPointerException - 如果参数为空值