程序包 ohos.nfc.tag

类 NfcATag

java.lang.Object

ohos.nfc.tag.TagManager

ohos.nfc.tag.NfcATag

public class NfcATag
extends TagManager

Provides interfaces to control the read and write of tags that support the NFC-A technology.

This class is inherited from the TagManager abstract class, and provides methods to create NfcATag objects and obtain the ATQA and SAK.

从以下版本开始:

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SystemCapability

SystemCapability.Communication.NFC

字段概要

字段

限定符和类型	字段	说明
static String	EXTRA_ATQA	Indicates the keyword used to obtain the ATQA of an NFC-A tag.
static String	EXTRA_SAK	Indicates the keyword used to obtain the SAK of an NFC-A tag.

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

方法概要

限定符和类型	方法	说明
byte[]	getAtqa()	Obtains the ATQA of an NFC-A tag.
static NfcATag	getInstance(TagInfo tagInfo)	Obtains an NfcATag object based on the tag information.
short	getSak()	Obtains the SAK of an NFC-A tag.

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_ATQA

public static final String EXTRA_ATQA

Indicates the keyword used to obtain the ATQA of an NFC-A tag.

从以下版本开始:

1

另请参阅:

常量字段值

EXTRA_SAK

public static final String EXTRA_SAK

Indicates the keyword used to obtain the SAK of an NFC-A tag.

从以下版本开始:

1

另请参阅:

常量字段值

方法详细资料

getInstance

public static NfcATag getInstance(TagInfo tagInfo)

Obtains an NfcATag object based on the tag information.

During tag reading, if the tag supports the NFC-A technology, an NfcATag object will be created based on the tag information.

参数:

tagInfo - Indicates the tag information.

返回:

Returns the NfcATag object.

从以下版本开始:

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getSak

public short getSak()

Obtains the SAK of an NFC-A tag.

返回:

Returns the SAK of the NFC-A tag.

从以下版本开始:

1

getAtqa

public byte[] getAtqa()

Obtains the ATQA of an NFC-A tag.

返回:

Returns the ATQA of the NFC-A tag.

从以下版本开始:

1