程序包 ohos.nfc.tag

类 IsoDepTag

java.lang.Object

ohos.nfc.tag.TagManager

ohos.nfc.tag.IsoDepTag

public class IsoDepTag
extends TagManager

Provides interfaces to obtain IsoDepTag objects and tag information.

This class is inherited from the TagManager abstract class and provides the methods to create IsoDepTag objects and obtain the higher layer response and historical bytes.

从以下版本开始:

1

SystemCapability

SystemCapability.Communication.NFC

字段概要

字段

限定符和类型	字段	说明
static String	EXTRA_HILAYER_RESP	Indicates the keyword used to obtain the higher layer response of an ISO-DEP tag that is based on the NFC-B technology.
static String	EXTRA_HIST_BYTES	Indicates the keyword used to obtain the historical bytes of an ISO-DEP tag that is based on the NFC-A technology.

从类继承的字段 ohos.nfc.tag.TagManager

ISO_DEP, MIFARE_CLASSIC, MIFARE_ULTRALIGHT, NDEF, NFC_A, NFC_B, NFC_F, NFC_V

构造器概要

构造器

构造器	说明
IsoDepTag(TagInfo tagInfo)	Obtains an IsoDepTag object based on the tag information.

方法概要

限定符和类型	方法	说明
byte[]	getHiLayerResponse()	Obtains the higher layer response of an ISO-DEP tag that is based on the NFC-B technology.
byte[]	getHistoricalBytes()	Obtains the historical bytes of an ISO-DEP tag that is based on the NFC-A technology.
static Optional<IsoDepTag>	getInstance(TagInfo tagInfo)	Obtains an instance of IsoDepTag object based on the tag information.

从类继承的方法 java.lang.Object

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

从类继承的方法 ohos.nfc.tag.TagManager

checkConnected, connectTag, getMaxSendLength, getSendDataTimeout, getTagInfo, isTagConnected, reset, sendData, setSendDataTimeout

字段详细资料

EXTRA_HILAYER_RESP

public static final String EXTRA_HILAYER_RESP

Indicates the keyword used to obtain the higher layer response of an ISO-DEP tag that is based on the NFC-B technology.

从以下版本开始:

1

另请参阅:

常量字段值

EXTRA_HIST_BYTES

public static final String EXTRA_HIST_BYTES

Indicates the keyword used to obtain the historical bytes of an ISO-DEP tag that is based on the NFC-A technology.

从以下版本开始:

1

另请参阅:

常量字段值

构造器详细资料

IsoDepTag

public IsoDepTag(TagInfo tagInfo)

Obtains an IsoDepTag object based on the tag information.

During tag reading, if the tag supports the ISO-DEP protocol, an IsoDepTag object will be created based on the tag information.

参数:

tagInfo - Indicates the tag information.

从以下版本开始:

1

方法详细资料

getInstance

public static Optional<IsoDepTag> getInstance(TagInfo tagInfo)

Obtains an instance of IsoDepTag object based on the tag information.

During tag reading, if the tag supports the ISO-DEP protocol, an IsoDepTag object will be created based on the tag information.

参数:

tagInfo - Indicates the tag information.

返回:

IsoDepTag object

从以下版本开始:

1

getHistoricalBytes

public byte[] getHistoricalBytes()

Obtains the historical bytes of an ISO-DEP tag that is based on the NFC-A technology.

返回:

Returns the historical bytes of the tag; returns an empty array with a length of 0 if the ISO-DEP tag is not based on the NFC-A technology.

从以下版本开始:

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getHiLayerResponse

public byte[] getHiLayerResponse()

Obtains the higher layer response of an ISO-DEP tag that is based on the NFC-B technology.

返回:

Returns the higher layer response of the tag; returns an empty array with a length of 0 if the ISO-DEP tag is not based on the NFC-B technology.

从以下版本开始:

1