harmony 鸿蒙nfctech (Standard NFC Technologies)

2022-10-28
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nfctech (Standard NFC Technologies)

The nfctech module provides APIs for reading and writing tags that use different Near-Field Communication (NFC) technologies.

NOTE

The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.

Modules to Import

import tag from '@ohos.nfc.tag';

NfcATag

Provides APIs to access NFC-A (ISO 14443-3A) properties and perform I/O operations on a tag. This class inherits from TagSession.

TagSession is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see TagSession.

The following describes the unique APIs of NfcATag.

NfcATag.getSak

getSak(): number

Obtains the SAK value of this NFC-A tag.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
number	SAK value obtained. The SAK is a hexadecimal number ranging from 0x00 to 0xFF.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'nfcA' correctly.
let sak : number = nfcA.getSak();
console.log("nfcA sak: " + sak);

NfcATag.getAtqa

getAtqa(): number[]

Obtains the ATQA value of this NFC-A tag.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
number[]	ATQA value obtained. Each number of the ATQA is a hexadecimal number ranging from 0x00 to 0xFF.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'nfcA' correctly.
let atqa : number[] = nfcA.getAtqa();
console.log("nfcA atqa: " + atqa);

NfcBTag

Provides APIs to access NFC-B (ISO 14443-3B) properties and perform I/O operations on a tag. This class inherits from TagSession.

TagSession is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see TagSession.

The following describes the unique APIs of NfcBTag.

NfcBTag.getRespAppData

getRespAppData(): number[]

Obtains the application data of this NFC-B tag.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
number[]	Application data obtained, which consists of hexadecimal numbers ranging from 0x00 to 0xFF.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'nfcB' correctly.
let respAppData : number[] = nfcB.getRespAppData();
console.log("nfcB respAppData: " + respAppData);

NfcBTag.getRespProtocol

getRespProtocol(): number[]

Obtains the protocol information of this NFC-B tag.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
number[]	Protocol information obtained, which consists of hexadecimal numbers ranging from 0x00 to 0xFF.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'nfcB' correctly.
let respProtocol : number[] = nfcB.getRespProtocol();
console.log("nfcB respProtocol: " + respProtocol);

NfcFTag

Provides APIs to access NFC-F (JIS 6319-4) properties and perform I/O operations on a tag. This class inherits from TagSession.

TagSession is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see TagSession.

The following describes the unique APIs of NfcFTag.

NfcFTag.getSystemCode

getSystemCode(): number[]

Obtains the system code from this NFC-F tag.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
number[]	System code obtained, which consists of hexadecimal numbers ranging from 0x00 to 0xFF.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'nfcF' correctly.
let systemCode : number[] = nfcF.getSystemCode();
console.log("nfcF systemCode: " + systemCode);

NfcFTag.getPmm

getPmm(): number[]

Obtains the PMm (consisting of the IC code and manufacturer parameters) information from this NFC-F tag.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
number[]	PMm information obtained, which consists of hexadecimal numbers ranging from 0x00 to 0xFF.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'nfcF' correctly.
let pmm : number[] = nfcF.getPmm();
console.log("nfcF pmm: " + pmm);

NfcVTag

Provides APIs to access NFC-V (ISO 15693) properties and perform I/O operations on a tag. This class inherits from TagSession.

TagSession is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see TagSession.

The following describes the unique APIs of NfcVTag.

NfcvTag.getResponseFlags

getResponseFlags(): number

Obtains the response flags from this NFC-V tag.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
number	Response flags obtained, which consist of hexadecimal numbers ranging from 0x00 to 0xFF.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'nfcV' correctly.
let responseFlags : number = nfcV.getResponseFlags();
console.log("nfcV responseFlags: " + responseFlags);

NfcvTag.getDsfId

getDsfId(): number

Obtains the data storage format identifier (DSFID) from this NFC-V tag.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
number	DSFID obtained, which consists of hexadecimal numbers ranging from 0x00 to 0xFF.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'nfcV' correctly.
let dsfId : number = nfcV.getDsfId();
console.log("nfcV dsfId: " + dsfId);

IsoDepTag⁹⁺

Provides APIs to access ISO-DEP (ISO 14443-4) properties and I/O operations on a tag. This class inherits from TagSession.

TagSession is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see TagSession.

The following describes the unique APIs of IsoDepTag.

IsoDepTag.getHistoricalBytes⁹⁺

getHistoricalBytes(): number[]

Obtains the historical bytes for the given tag. This API applies only to the IsoDep cards that use the NFC-A technology.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
number[]	Historical bytes obtained, which consist of hexadecimal numbers ranging from 0x00 to 0xFF. If the IsoDep tag uses the NFC-B technology, null will be returned.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'isoDep' correctly.
let historicalBytes : number[] = isoDep.getHistoricalBytes();
console.log("isoDep historicalBytes: " + historicalBytes);

IsoDepTag.getHiLayerResponse⁹⁺

getHiLayerResponse(): number[]

Obtains the higher-layer response bytes for the given tag. This API applies only to the IsoDep cards that use the NFC-B technology.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
number[]	Higher-layer response bytes obtained, which consist of hexadecimal numbers ranging from 0x00 to 0xFF. If the IsoDep tag uses the NFC-A technology, null will be returned.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'isoDep' correctly.
let hiLayerResponse : number[] = isoDep.getHiLayerResponse();
console.log("isoDep hiLayerResponse: " + hiLayerResponse);

IsoDepTag.isExtendedApduSupported⁹⁺

isExtendedApduSupported(): Promise<boolean>

Checks whether an extended application protocol data unit (APDU) is supported. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
Promise<boolean>	Promise used to return the result. If the extended APDU is supported, true is returned; otherwise, false is returned.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BussinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'isoDep' correctly.

// Connect to the tag if it is not connected.
if (!isoDep.isTagConnected()) {
    if (!isoDep.connectTag()) {
        console.log("isoDep connectTag failed.");
        return;
    }
}

try {
    isoDep.isExtendedApduSupported().then((response: boolean) => {
        console.log("isoDep isExtendedApduSupported Promise response: " + response);
    }).catch((err: BusinessError) => {
        console.log("isoDep isExtendedApduSupported Promise Code: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("isoDep isExtendedApduSupported Promise Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

IsoDepTag.isExtendedApduSupported⁹⁺

isExtendedApduSupported(callback: AsyncCallback<boolean>): void

Checks whether an extended APDU is supported. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<boolean>	Yes	Callback invoked to return the result. If the extended APDU is supported, true is returned; otherwise, false is returned.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'isoDep' correctly.

// Connect to the tag if it is not connected.
if (!isoDep.isTagConnected()) {
    if (!isoDep.connectTag()) {
        console.log("isoDep connectTag failed.");
        return;
    }
}

try {
    isoDep.isExtendedApduSupported((err: BusinessError, response: boolean) => {
        if (err) {
            console.log("isoDep isExtendedApduSupported AsyncCallback Code: ${err.code}, message: ${err.message}");
        } else {
            console.log("isoDep isExtendedApduSupported AsyncCallback response: " + response);
        }
    });
} catch (busiErr) {
    console.log("isoDep isExtendedApduSupported AsyncCallback Code: ${(busiError as Business).code}, " +
        "message: ${(busiError as Business).message}");
}

NdefMessage⁹⁺

NdefMessage.getNdefRecords⁹⁺

getNdefRecords(): tag.NdefRecord[]

Obtains all NDEF records.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
tag.NdefRecord[]	List of NDEF records obtained. For details, see NFCForum-TS-NDEF_1.0.

Example

import tag from '@ohos.nfc.tag';

// Obtain ndefMessage from tag.ndef.createNdefMessage or ndefTag.getNdefMessage.
// let ndefMessage : tag.NdefMessage = tag.ndef.createNdefMessage(...);
// let ndefMessage : tag.NdefMessage = ndefTag.getNdefMessage();

let ndefRecords : tag.NdefRecord[] = ndefMessage.getNdefRecords();
console.log("ndef ndefRecords number: " + ndefRecords.length);

NdefTag⁹⁺

Provides APIs to access the tags in the NFC Data Exchange Format (NDEF). This class inherits from TagSession.

TagSession is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see TagSession.

The following describes the unique APIs of NdefTag.

NdefTag.getNdefTagType⁹⁺

getNdefTagType(): tag.NfcForumType

Obtains the NDEF tag type.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
tag.NfcForumType	NDEF tag type obtained. It can be NFC FORUM TYPE 1, 2, 3, or 4.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefTag' correctly.
let ndefTagType : tag.NfcForumType = ndefTag.getNdefTagType();
console.log("ndef ndefTagType: " + ndefTagType);

NdefTag.getNdefMessage⁹⁺

getNdefMessage(): NdefMessage

Obtains the NDEF message from this NDEF tag.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
NdefMessage	NDEF message created. For details, see NFCForum-TS-NDEF_1.0.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefTag' correctly.
let ndefMessage : tag.NdefMessage = ndefTag.getNdefMessage();
console.log("ndef ndefMessage: " + ndefMessage);

NdefTag.isNdefWritable⁹⁺

isNdefWritable(): boolean;

Check whether this NDEF tag is writable. Before calling the data write API, check whether the write operation is supported.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
boolean	Promise used to return the result. If the tag is writable, true is returned; otherwise, false is returned.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefTag' correctly.
let isWritable : boolean = ndefTag.isNdefWritable();
console.log("ndef isNdefWritable: " + isWritable);

NdefTag.readNdef⁹⁺

readNdef(): Promise<NdefMessage>

Reads the NDEF message from this tag. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
Promise<NdefMessage>	Promise used to return the message read.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefTag' correctly.

// Connect to the tag if it is not connected.
if (!ndefTag.isTagConnected()) {
    if (!ndefTag.connectTag()) {
        console.log("ndefTag connectTag failed.");
        return;
    }
}

try {
    ndefTag.readNdef().then((ndefmessage : tag.NdefMessage) => {
        console.log("ndef readNdef Promise ndefmessage: " + ndefmessage);
    }).catch((err : BusinessError)=> {
        console.log("ndef readNdef Promise err Code: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("ndef readNdef Promise catched busiError Code: ${(busiError as BusinessError).code}, " +
        "message: ${(busiError as BusinessError).message}");
}

NdefTag.readNdef⁹⁺

readNdef(callback: AsyncCallback<NdefMessage>): void

Reads the NDEF message from this tag. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<NdefMessage>	Yes	Callback invoked to return the NDEF message read.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefTag' correctly.

// Connect to the tag if it is not connected.
if (!ndefTag.isTagConnected()) {
    if (!ndefTag.connectTag()) {
        console.log("ndefTag connectTag failed.");
        return;
    }
}

try {
    ndefTag.readNdef((err : BusinessError, ndefmessage : tag.NdefMessage)=> {
        if (err) {
            console.log("ndef readNdef AsyncCallback err Code: ${err.code}, message: ${err.message}");
        } else {
          console.log("ndef readNdef AsyncCallback ndefmessage: " + ndefmessage);
        }
    });
} catch (busiError) {
    console.log("ndef readNdef AsyncCallback catched Code: ${(busiError : BusinessError).code}," +
      " message: ${(busiError : BusinessError).message}");
}

NdefTag.writeNdef⁹⁺

writeNdef(msg: NdefMessage): Promise<void>;

Writes an NDEF message to this tag. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
msg	NdefMessage	Yes	NDEF message to write.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefTag' correctly.
// NDEF message created from raw data, such as:
let ndefMessage : tag.NdefMessage =
    tag.ndef.createNdefMessage([0xD1, 0x01, 0x03, 0x54, 0x4E, 0x46, 0x43]);  // It must be parsed as NDEF Record.
// or ndefMessage created from tag.ndef.createNdefMessage(ndefRecords: NdefRecord[])

// Connect to the tag if it is not connected.
if (!ndefTag.isTagConnected()) {
    if (!ndefTag.connectTag()) {
        console.log("ndefTag connectTag failed.");
        return;
    }
}

try {
    ndefTag.writeNdef(ndefMessage).then(() => {
        console.log("ndef writeNdef Promise success.");
    }).catch((err : BusinessError)=> {
        console.log("ndef writeNdef err Code: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("ndef writeNdef Promise catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

NdefTag.writeNdef⁹⁺

writeNdef(msg: NdefMessage, callback: AsyncCallback<void>): void

Writes an NDEF message to this tag. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
msg	NdefMessage	Yes	NDEF message to write.
callback	AsyncCallback<void>	Yes	Callback invoked to return the result.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefTag' correctly.
// NDEF message created from raw data, such as:
let ndefMessage : tag.NdefMessage = 
    tag.ndef.createNdefMessage([0xD1, 0x01, 0x03, 0x54, 0x4E, 0x46, 0x43]);  // It must be parsed as NDEF Record.
// or ndefMessage created from tag.ndef.createNdefMessage(ndefRecords: NdefRecord[])

// Connect to the tag if it is not connected.
if (!ndefTag.isTagConnected()) {
    if (!ndefTag.connectTag()) {
        console.log("ndefTag connectTag failed.");
        return;
    }
}

try {
    ndefTag.writeNdef(ndefMessage, (err : BusinessError)=> {
        if (err) {
            console.log("ndef writeNdef AsyncCallback Code: ${err.code}, message: ${err.message}");
        } else {
            console.log("ndef writeNdef AsyncCallback success.");
        }
    });
} catch (busiError) {
    console.log("ndef writeNdef AsyncCallback catch busiError Code: ${(busiError as Businsess).code}," +
        " message: ${(busiError as Businsess).message}");
}

NdefTag.canSetReadOnly⁹⁺

canSetReadOnly(): boolean

Checks whether this NDEF tag can be set to read-only.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
boolean	Returns true if the tag can be set to read-only; returns false otherwise.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefTag' correctly.
let canSetReadOnly : boolean = ndefTag.canSetReadOnly();
console.log("ndef canSetReadOnly: " + canSetReadOnly);

NdefTag.setReadOnly⁹⁺

setReadOnly(): Promise<void>

Sets this NDEF tag to read-only. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefTag' correctly.

// Connect to the tag if it is not connected.
if (!ndefTag.isTagConnected()) {
    if (!ndefTag.connectTag()) {
        console.log("ndefTag connectTag failed.");
        return;
    }
}

try {
    ndefTag.setReadOnly().then(() => {
        console.log("ndef setReadOnly Promise success.");
    }).catch((err : BusinessError)=> {
        console.log("ndef setReadOnly Promise err Code: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("ndef setReadOnly Promise catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

NdefTag.setReadOnly⁹⁺

setReadOnly(callback: AsyncCallback<void>): void

Sets this NDEF tag to read-only. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<void>	Yes	Callback invoked to return the result.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefTag' correctly.

// Connect to the tag if it is not connected.
if (!ndefTag.isTagConnected()) {
    if (!ndefTag.connectTag()) {
        console.log("ndefTag connectTag failed.");
        return;
    }
}

try {
    ndefTag.setReadOnly((err : BusinessError)=> {
        if (err) {
            console.log("ndef setReadOnly AsyncCallback err Code: ${err.code}, message: ${err.message}");
        } else {
            console.log("ndef setReadOnly AsyncCallback success.");
        }
    });
} catch (busiError) {
    console.log("ndef setReadOnly AsyncCallback catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

NdefTag.getNdefTagTypeString⁹⁺

getNdefTagTypeString(type: tag.NfcForumType): string

Converts an NFC Forum Type tag to a string defined in the NFC Forum.

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
type	tag.NfcForumType	Yes	NDEF tag type. It can be NFC FORUM type 1, 2, 3, or 4.

Return value

Type	Description
string	Byte array obtained.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefTag' correctly.

try {
    let ndefTypeString : tag.NfcForumType = ndefTag.getNdefTagTypeString(tag.NfcForumType.NFC_FORUM_TYPE_1);
    console.log("ndef ndefTypeString: " + ndefTypeString);
} catch (busiError) {
    console.log("ndef getNdefTagTypeString catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag⁹⁺

Provides APIs to access MIFARE Classic properties and perform I/O operations on a tag. This class inherits from TagSession.

TagSession is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see TagSession.

The following describes the unique APIs of MifareClassicTag.

MifareClassicTag.authenticateSector⁹⁺

authenticateSector(sectorIndex: number, key: number[], isKeyA: boolean): Promise<void>

Authenticates a sector using a key. The sector can be accessed only after the authentication is successful. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
sectorIndex	number	Yes	Index of the sector to authenticate. The sector indexes start from 0.
key	number[]	Yes	Key (6 bytes) used for sector authentication.
isKeyA	boolean	Yes	Whether the key is key A. The value true indicates key A, and false indicates key B.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let sectorIndex = 1; // Change it as required.
    let key = [0x01, 0x02, 0x03, 0x04, 0x05, 0x06]  // The key must be of 6 bytes.
    mifareClassic.authenticateSector(sectorIndex, key, true).then(() => {
        console.log("mifareClassic authenticateSector Promise success.");
    }).catch((err : BusinessError)=> {
        console.log("mifareClassic authenticateSector Promise errCode: ${err.code}, " + "message: ${err.message}");
    });
} catch (busiError) {
    console.log("mifareClassic authenticateSector Promise catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.authenticateSector⁹⁺

authenticateSector(sectorIndex: number, key: number[], isKeyA: boolean, callback: AsyncCallback<void>): void

Authenticates a sector using a key. The sector can be accessed only after the authentication is successful. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
sectorIndex	number	Yes	Index of the sector to authenticate. The sector indexes start from 0.
key	number[]	Yes	Key (6 bytes) used for sector authentication.
isKeyA	boolean	Yes	Whether the key is key A. The value true indicates key A, and false indicates key B.
callback	AsyncCallback<void>	Yes	Callback invoked to return the result.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let sectorIndex = 1; // Change it as required.
    let key = [0x01, 0x02, 0x03, 0x04, 0x05, 0x06]  // The key must be of 6 bytes.
    mifareClassic.authenticateSector(sectorIndex, key, true, (err : BusinessError)=> {
        if (err) {
            console.log("mifareClassic authenticateSector AsyncCallback errCode: ${err.code}, message: ${err.message}");
        } else {
            console.log("mifareClassic authenticateSector AsyncCallback success.");
        }
    });
} catch (busiError) {
    console.log("mifareClassic authenticateSector AsyncCallback catch Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.readSingleBlock⁹⁺

readSingleBlock(blockIndex: number): Promise<number[]>

Reads a block (16 bytes) on this tag. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
blockIndex	number	Yes	Index of the block to read. The block indexes start from 0.

Return value

Type	Description
Promise<number[]>	Promise used to return the block data read.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let blockIndex = 1; // Change it as required.
    mifareClassic.readSingleBlock(blockIndex).then((data : number[]) => {
        console.log("mifareClassic readSingleBlock Promise data: " + data);
    }).catch((err : BusinessError)=> {
        console.log("mifareClassic readSingleBlock Promise errCode: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("mifareClassic readSingleBlock Promise catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.readSingleBlock⁹⁺

readSingleBlock(blockIndex: number, callback: AsyncCallback<number[]>): void

Reads a block (16 bytes) on this tag. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
blockIndex	number	Yes	Index of the block to read. The block indexes start from 0.
callback	AsyncCallback<number[]>	Yes	Callback invoked to return the data read.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let blockIndex = 1; // Change it as required.
    mifareClassic.readSingleBlock(blockIndex, (err : BusinessError, data : number[])=> {
        if (err) {
            console.log("mifareClassic readSingleBlock AsyncCallback err: " + err);
        } else {
            console.log("mifareClassic readSingleBlock AsyncCallback data: " + data);
        }
    });
} catch (busiError) {
    console.log("mifareClassic readSingleBlock AsyncCallback catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.writeSingleBlock⁹⁺

writeSingleBlock(blockIndex: number, data: number[]): Promise<void>

Writes data to a block on this tag. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
blockIndex	number	Yes	Index of the target block. The block indexes start from 0.
data	number[]	Yes	16-byte data to write.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let blockIndex = 1; // Change it as required.
    let rawData = [0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A,
        0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10]; // It must be 16 bytes.
    mifareClassic.writeSingleBlock(blockIndex, rawData).then(() => {
        console.log("mifareClassic writeSingleBlock Promise success.");
    }).catch((err : BusinessError)=> {
        console.log("mifareClassic writeSingleBlock Promise errCode: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("mifareClassic writeSingleBlock Promise catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.writeSingleBlock⁹⁺

writeSingleBlock(blockIndex: number, data: number[], callback: AsyncCallback<void>): void

Writes data to a block on this tag. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
blockIndex	number	Yes	Index of the target block. The block indexes start from 0.
data	number[]	Yes	16-byte data to write.
callback	AsyncCallback<void>	Yes	Callback invoked to return the result.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let blockIndex = 1; // Change it as required.
    let rawData = [0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A,
        0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10]; // It must be 16 bytes.
    mifareClassic.writeSingleBlock(blockIndex, rawData, (err : BusinessError)=> {
        if (err) {
            console.log("mifareClassic writeSingleBlock AsyncCallback err Code: ${err.code}, message: ${err.message}");
        } else {
            console.log("mifareClassic writeSingleBlock AsyncCallback success.");
        }
    });
} catch (busiError) {
    console.log("mifareClassic writeSingleBlock AsyncCallback catch Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.incrementBlock⁹⁺

incrementBlock(blockIndex: number, value: number): Promise<void>

Increments a block with data. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
blockIndex	number	Yes	Index of the block to increment. The block indexes start from 0.
value	number	Yes	Block data to increment. The value cannot be a negative number.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let blockIndex = 1; // Change it as required.
    let value = 0x20; // Change it as required.
    mifareClassic.incrementBlock(blockIndex, value).then(() => {
        console.log("mifareClassic incrementBlock Promise success.");
    }).catch((err : BusinessError)=> {
        console.log("mifareClassic incrementBlock Promise err Code: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("mifareClassic incrementBlock Promise catch Code: ${(busiError as Businsess).code}, " +
       "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.incrementBlock⁹⁺

incrementBlock(blockIndex: number, value: number, callback: AsyncCallback<void>): void

Increments a block with data. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
blockIndex	number	Yes	Index of the block to increment. The block indexes start from 0.
value	number	Yes	Block data to increment. The value cannot be a negative number.
callback	AsyncCallback<void>	Yes	Callback invoked to return the result.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let blockIndex = 1; // Change it as required.
    let value = 0x20; // Change it as required.
    mifareClassic.incrementBlock(blockIndex, value, (err : BusinessError)=> {
        if (err) {
            console.log("mifareClassic incrementBlock AsyncCallback err Code: ${err.code}, message: ${err.message}");
        } else {
            console.log("mifareClassic incrementBlock AsyncCallback success.");
        }
    });
} catch (busiError) {
    console.log("mifareClassic incrementBlock AsyncCallback catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.decrementBlock⁹⁺

decrementBlock(blockIndex: number, value: number): Promise<void>

Decrements a block. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
blockIndex	number	Yes	Index of the block to decrement. The block indexes start from 0.
value	number	Yes	Block data to decrement. The value cannot be a negative number.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let blockIndex = 1; // Change it as required.
    let value = 0x20; // Change it as required.
    mifareClassic.decrementBlock(blockIndex, value).then(() => {
        console.log("mifareClassic decrementBlock Promise success.");
    }).catch((err : BusinessError)=> {
        console.log("mifareClassic decrementBlock Promise errCode: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("mifareClassic decrementBlock Promise catch busiError: Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.decrementBlock⁹⁺

decrementBlock(blockIndex: number, value: number, callback: AsyncCallback<void>): void

Decrements a block. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
blockIndex	number	Yes	Index of the block to decrement. The block indexes start from 0.
value	number	Yes	Block data to decrement. The value cannot be a negative number.
callback	AsyncCallback<void>	Yes	Callback invoked to return the result.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let blockIndex = 1; // Change it as required.
    let value = 0x20; // Change it as required.
    mifareClassic.decrementBlock(blockIndex, value, (err : BusinessError)=> {
        if (err) {
            console.log("mifareClassic decrementBlock AsyncCallback errCode: ${err.code}, message: ${err.message}");
        } else {
            console.log("mifareClassic decrementBlock AsyncCallback success.");
        }
    });
} catch (busiError) {
    console.log("mifareClassic decrementBlock AsyncCallback catch Code: ${(busiError as Businsess).code}, " +
      "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.transferToBlock⁹⁺

transferToBlock(blockIndex: number): Promise<void>

Transfers data from the temporary register to a block. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
blockIndex	number	Yes	Index of the destination block. The value starts form 0.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let blockIndex = 1; // Change it as required.
    mifareClassic.transferToBlock(blockIndex).then(() => {
        console.log("mifareClassic transferToBlock Promise success.");
    }).catch((err : BusinessError)=> {
        console.log("mifareClassic transferToBlock Promise err Code: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("mifareClassic transferToBlock Promise catch Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.transferToBlock⁹⁺

transferToBlock(blockIndex: number, callback: AsyncCallback<void>): void

Transfers data from the temporary register to a block. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
blockIndex	number	Yes	Index of the destination block. The value starts form 0.
callback	AsyncCallback<void>	Yes	Callback invoked to return the result.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let blockIndex = 1; // Change it as required.
    mifareClassic.transferToBlock(blockIndex, (err : BusinessError)=> {
        if (err) {
            console.log("mifareClassic transferToBlock AsyncCallback errCode: ${err.code}, message: ${err.message}");
        } else {
            console.log("mifareClassic transferToBlock AsyncCallback success.");
        }
    });
} catch (busiError) {
    console.log("mifareClassic transferToBlock AsyncCallback catch Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.restoreFromBlock⁹⁺

restoreFromBlock(blockIndex: number): Promise<void>

Restores data in the temporary register from a block. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
blockIndex	number	Yes	Index of the target block. The value starts form 0.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let blockIndex = 1; // Change it as required.
    mifareClassic.restoreFromBlock(blockIndex).then(() => {
        console.log("mifareClassic restoreFromBlock Promise success.");
    }).catch((err : BusinessError)=> {
        console.log("mifareClassic restoreFromBlock Promise errCode: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("mifareClassic restoreFromBlock Promise catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.restoreFromBlock⁹⁺

restoreFromBlock(blockIndex: number, callback: AsyncCallback<void>): void

Restores data in the temporary register from a block. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
blockIndex	number	Yes	Index of the target block. The value starts form 0.
callback	AsyncCallback<void>	Yes	Callback invoked to return the result.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

// Connect to the tag if it is not connected.
if (!mifareClassic.isTagConnected()) {
    if (!mifareClassic.connectTag()) {
        console.log("mifareClassic connectTag failed.");
        return;
    }
}

try {
    let blockIndex = 1; // Change it as required.
    mifareClassic.restoreFromBlock(blockIndex, (err : BusinessError)=> {
        if (err) {
            console.log("mifareClassic restoreFromBlock AsyncCallback err Code: ${err.code}, message: ${err.message}");
        } else {
            console.log("mifareClassic restoreFromBlock AsyncCallback success.");
        }
    });
} catch (busiError) {
    console.log("mifareClassic restoreFromBlock AsyncCallback catch Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.getSectorCount⁹⁺

getSectorCount(): number

Obtains the number of sectors in this MIFARE Classic tag.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
number	Number of sectors obtained.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.
let sectorCount : number = mifareClassic.getSectorCount();
console.log("mifareClassic sectorCount: " + sectorCount);

MifareClassicTag.getBlockCountInSector⁹⁺

getBlockCountInSector(sectorIndex: number): number

Obtains the number of blocks in a sector.

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
sectorIndex	number	Yes	Index of the target sector. The sector indexes start from 0.

Return value

Type	Description
number	Number of blocks obtained.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

try {
    let sectorIndex = 1; // Change it as required.
    let blockCnt : number = mifareClassic.getBlockCountInSector(sectorIndex);
    console.log("mifareClassic blockCnt: " + blockCnt);
} catch (busiError) {
    console.log("mifareClassic getBlockCountInSector catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.getType⁹⁺

getType(): tag.MifareClassicType

Obtains the type of this MIFARE Classic tag.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
tag.MifareClassicType	Type of the MIFARE Classic tag obtained.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.
let getType : tag.MifareClassicType = mifareClassic.getType();
console.log("mifareClassic getType: " + getType);

MifareClassicTag.getTagSize⁹⁺

getTagSize(): number

Obtains the size of this tag. For details, see MifareClassicSize.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
number	Tag size obtained, in bytes. For details, see MifareClassicSize.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.
let tagSize : number = mifareClassic.getTagSize();
console.log("mifareClassic tagSize: " + tagSize);

MifareClassicTag.isEmulatedTag⁹⁺

isEmulatedTag(): boolean

Checks whether it is an emulated tag.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
boolean	Returns true if the tag is an emulated tag; returns false otherwise.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.
let isEmulatedTag : boolean = mifareClassic.isEmulatedTag();
console.log("mifareClassic isEmulatedTag: " + isEmulatedTag);

MifareClassicTag.getBlockIndex⁹⁺

getBlockIndex(sectorIndex: number): number

Obtains the index of the first block in a sector.

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
sectorIndex	number	Yes	Index of the target sector. The sector indexes start from 0.

Return value

Type	Description
number	Index of the first block obtained.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

try {
    let sectorIndex = 1; // Change it as required.
    let blockIndex : number = mifareClassic.getBlockIndex(sectorIndex);
    console.log("mifareClassic blockIndex: " + blockIndex);
} catch (busiError) {
    console.log("mifareClassic getBlockIndex catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareClassicTag.getSectorIndex⁹⁺

getSectorIndex(blockIndex: number): number

Obtains the index of the sector that holds the specified block.

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
blockIndex	number	Yes	Index of the block. The block indexes start from 0.

Return value

Type	Description
number	Index of the sector obtained.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareClassic' correctly.

try {
    let blockIndex = 1; // Change it as required.
    let sectorIndex : number = mifareClassic.getSectorIndex(blockIndex);
    console.log("mifareClassic sectorIndex: " + sectorIndex);
} catch (busiError) {
    console.log("mifareClassic getSectorIndex catch busiError Code: ${(busiError as Businsess).code}, " +
       "message: ${(busiError as Businsess).message}");
}

MifareUltralightTag⁹⁺

Provides APIs to access MIFARE Ultralight properties and perform I/O operations on a tag. This class inherits from TagSession.

TagSession is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see TagSession.

The following describes the unique APIs of MifareUltralightTag.

MifareUltralightTag.readMultiplePages⁹⁺

readMultiplePages(pageIndex: number): Promise<number[]>

Reads four pages of data (4 bytes per page) from this tag. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
pageIndex	number	Yes	Index of the first page to read. The page indexes start from 0.

Return value

Type	Description
Promise<number[]>	Promise used to return the data read, which is 16 bytes in total.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example


import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareUltralight' correctly.

// Connect to the tag if it is not connected.
if (!mifareUltralight.isTagConnected()) {
    if (!mifareUltralight.connectTag()) {
        console.log("mifareUltralight connectTag failed.");
        return;
    }
}

try {
    let pageIndex = 1; // Change it as required.
    mifareUltralight.readMultiplePages(pageIndex).then((data : number[]) => {
        console.log("mifareUltralight readMultiplePages Promise data = " + data);
    }).catch((err : BusinessError)=> {
        console.log("mifareUltralight readMultiplePages Promise Code: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("mifareUltralight readMultiplePages Promise catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareUltralightTag.readMultiplePages⁹⁺

readMultiplePages(pageIndex: number, callback: AsyncCallback<number[]>): void

Reads four pages of data (4 bytes per page) from this tag. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
pageIndex	number	Yes	Index of the first page to read. The page indexes start from 0.
callback	AsyncCallback<number[]>	Yes	Callback invoked to return the data read, which is 16 bytes in total.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareUltralight' correctly.

// Connect to the tag if it is not connected.
if (!mifareUltralight.isTagConnected()) {
    if (!mifareUltralight.connectTag()) {
        console.log("mifareUltralight connectTag failed.");
        return;
    }
}

try {
    let pageIndex = 1; // Change it as required.
    mifareUltralight.readMultiplePages(pageIndex, (err : BusinessError, data : number[])=> {
        if (err) {
          console.log("mifareUltralight readMultiplePages AsyncCallback Code: ${err.code}, message: ${err.message}");
        } else {
          console.log("mifareUltralight readMultiplePages AsyncCallback data: " + data);
        }
    });
} catch (busiError) {
    console.log("mifareUltralight readMultiplePages AsyncCallback catch Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareUltralightTag.writeSinglePage⁹⁺

writeSinglePage(pageIndex: number, data: number[]): Promise<void>

Writes one page (4 bytes) of data to this tag. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
pageIndex	number	Yes	Index of the page to write. The page indexes start from 0.
data	number[]	Yes	4-byte data to write.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareUltralight' correctly.

// Connect to the tag if it is not connected.
if (!mifareUltralight.isTagConnected()) {
    if (!mifareUltralight.connectTag()) {
        console.log("mifareUltralight connectTag failed.");
        return;
    }
}

try {
    let pageIndex = 1; // Change it as required.
    let rawData = [0x01, 0x02, 0x03, 0x04]; // MUST be 4 bytes, change it to be correct raw data.
    mifareUltralight.writeSinglePage(pageIndex, rawData).then(() => {
        console.log("mifareUltralight writeSinglePage Promise success.");
    }).catch((err : BusinessError)=> {
        console.log("mifareUltralight writeSinglePage Promise err Code: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("mifareUltralight writeSinglePage Promise catch Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareUltralightTag.writeSinglePage⁹⁺

writeSinglePage(pageIndex: number, data: number[], callback: AsyncCallback<void>): void

Writes one page (4 bytes) of data to this tag. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
pageIndex	number	Yes	Index of the page to write. The page indexes start from 0.
data	number[]	Yes	4-byte data to write.
callback	AsyncCallback<void>	Yes	Callback invoked to return the result.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareUltralight' correctly.

// Connect to the tag if it is not connected.
if (!mifareUltralight.isTagConnected()) {
    if (!mifareUltralight.connectTag()) {
        console.log("mifareUltralight connectTag failed.");
        return;
    }
}

try {
    let pageIndex = 1; // Change it as required.
    let rawData = [0x01, 0x02, 0x03, 0x04]; // MUST be 4 bytes, change it to be correct raw data.
    mifareUltralight.writeSinglePage(pageIndex, rawData, (err : BusinessError)=> {
        if (err) {
            console.log("mifareUltralight writeSinglePage AsyncCallback Code: ${err.code}, message: ${err.message}");
        } else {
            console.log("mifareUltralight writeSinglePage AsyncCallback success.");
        }
    });
} catch (busiError) {
    console.log("mifareUltralight writeSinglePage AsyncCallback catch Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

MifareUltralightTag.getType⁹⁺

getType(): tag.MifareUltralightType

Obtains the type of this MIFARE Ultralight tag.

System capability: SystemCapability.Communication.NFC.Tag

Return value

Type	Description
tag.MifareUltralightType	Type of the MIFARE Ultralight tag obtained.

Example

import tag from '@ohos.nfc.tag';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'mifareUltralight' correctly.
let getType : tag.MifareUltralightType = mifareClassic.getType();
console.log("mifareUltralight getType: " + getType);

NdefFormatableTag⁹⁺

Provides APIs for formatting NDEF formattable tags. This class inherits from TagSession.

TagSession is the base class of all NFC tag technologies. It provides common interfaces for establishing connections and transferring data. For more details, see TagSession.

The following describes the unique APIs of NdefFormatableTag.

NdefFormatableTag.format⁹⁺

format(message: NdefMessage): Promise<void>

Formats this tag as an NDEF tag, and writes an NDEF message to it. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
message	NdefMessage	Yes	NDEF message to write. If this parameter is null, the tag is formatted only (no data will be written).

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefFormatable' correctly.

// Connect to the tag if it is not connected.
if (!ndefFormatable.isTagConnected()) {
    if (!ndefFormatable.connectTag()) {
        console.log("ndefFormatable connectTag failed.");
        return;
    }
}

try {
    // NDEF message created from raw data, such as:
    let ndefMessage = tag.ndef.createNdefMessage([0xD1, 0x01, 0x03, 0x54, 0x4E, 0x46, 0x43]);  // It must be parsed as NDEF Record.
    // or ndefMessage created from tag.ndef.createNdefMessage(ndefRecords: NdefRecord[])

    ndefFormatable.format(ndefMessage).then(() => {
        console.log("ndefFormatable format Promise success.");
    }).catch((err : BusinessError)=> {
        console.log("ndefFormatable format Promise err Code: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("ndefFormatable format Promise catch busiError Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

NdefFormatableTag.format⁹⁺

format(message: NdefMessage, callback: AsyncCallback<void>): void

Formats this tag as an NDEF tag, and writes an NDEF message to it. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
message	NdefMessage	Yes	NDEF message to write when the formatting is successful. If this parameter is null, the tag is formatted only (no data will be written).

Return value

Type	Description
callback: AsyncCallback<void>	Callback invoked to return the result.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefFormatable' correctly.

// Connect to the tag if it is not connected.
if (!ndefFormatable.isTagConnected()) {
    if (!ndefFormatable.connectTag()) {
        console.log("ndefFormatable connectTag failed.");
        return;
    }
}

try {
    // NDEF message created from raw data, such as:
    let ndefMessage = tag.ndef.createNdefMessage([0xD1, 0x01, 0x03, 0x54, 0x4E, 0x46, 0x43]);  // It must be parsed as NDEF Record.
    // or ndefMessage created from tag.ndef.createNdefMessage(ndefRecords: NdefRecord[])

    ndefFormatable.format(ndefMessage, (err : BusinessError)=> {
        if (err) {
            console.log("ndefFormatable format AsyncCallback Code: ${err.code}, message: ${err.message}");
        } else {
            console.log("ndefFormatable format AsyncCallback success.");
        }
    });
} catch (busiError) {
    console.log("ndefFormatable format AsyncCallback catch Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

NdefFormatableTag.formatReadOnly⁹⁺

formatReadOnly(message: NdefMessage): Promise<void>

Formats this tag as an NDEF tag, writes an NDEF message to it, and then sets the tag to read-only. This API uses a promise to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
message	NdefMessage	Yes	NDEF message to write. If this parameter is null, the tag is formatted only (no data will be written).

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefFormatable' correctly.

// Connect to the tag if it is not connected.
if (!ndefFormatable.isTagConnected()) {
    if (!ndefFormatable.connectTag()) {
        console.log("ndefFormatable connectTag failed.");
        return;
    }
}

try {
    // NDEF message created from raw data, such as:
    let ndefMessage = tag.ndef.createNdefMessage([0xD1, 0x01, 0x03, 0x54, 0x4E, 0x46, 0x43]);  // It must be parsed as NDEF Record.
    // or ndefMessage created from tag.ndef.createNdefMessage(ndefRecords: NdefRecord[])

    ndefFormatable.formatReadOnly(ndefMessage).then(() => {
        console.log("ndefFormatable formatReadOnly Promise success.");
    }).catch((err : BusinessError)=> {
        console.log("ndefFormatable formatReadOnly Promise Code: ${err.code}, message: ${err.message}");
    });
} catch (busiError) {
    console.log("ndefFormatable formatReadOnly Promise catch Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

NdefFormatableTag.formatReadOnly⁹⁺

formatReadOnly(message: NdefMessage, callback: AsyncCallback<void>): void

Formats this tag as an NDEF tag, writes an NDEF message to the NDEF tag, and then sets the tag to read-only. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.NFC_TAG

System capability: SystemCapability.Communication.NFC.Tag

Parameters

Name	Type	Mandatory	Description
message	NdefMessage	Yes	NDEF message to write. If this parameter is null, the tag is formatted only (no data will be written).

Return value

Type	Description
callback: AsyncCallback<void>	Callback invoked to return the result.

Error codes

For details about the error codes, see NFC Error Codes.

ID	Error Message
3100201	Tag running state is abnormal in service.

Example

import tag from '@ohos.nfc.tag';
import {BusinessError} from '@ohos.base';

// Check whether 'tag.TagInfo' in 'js-apis-nfcTag.md' has obtained 'ndefFormatable' correctly.

// Connect to the tag if it is not connected.
if (!ndefFormatable.isTagConnected()) {
    if (!ndefFormatable.connectTag()) {
        console.log("ndefFormatable connectTag failed.");
        return;
    }
}

try {
    // NDEF message created from raw data, such as:
    let ndefMessage = tag.ndef.createNdefMessage([0xD1, 0x01, 0x03, 0x54, 0x4E, 0x46, 0x43]);  // It must be parsed as NDEF Record.
    // or ndefMessage created from tag.ndef.createNdefMessage(ndefRecords: NdefRecord[])

    ndefFormatable.formatReadOnly(ndefMessage, (err : BusinessError)=> {
        if (err) {
            console.log("ndefFormatable formatReadOnly AsyncCallback err Code: ${err.code}, message: ${err.message}");
        } else {
            console.log("ndefFormatable formatReadOnly AsyncCallback success.");
        }
    });
} catch (busiError) {
    console.log("ndefFormatable formatReadOnly AsyncCallback catch Code: ${(busiError as Businsess).code}, " +
        "message: ${(busiError as Businsess).message}");
}

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harmony 鸿蒙nfctech (Standard NFC Technologies)

nfctech (Standard NFC Technologies)

Modules to Import

NfcATag

NfcATag.getSak

NfcATag.getAtqa

NfcBTag

NfcBTag.getRespAppData

NfcBTag.getRespProtocol

NfcFTag

NfcFTag.getSystemCode

NfcFTag.getPmm

NfcVTag

NfcvTag.getResponseFlags

NfcvTag.getDsfId

IsoDepTag9+

IsoDepTag.getHistoricalBytes9+

IsoDepTag.getHiLayerResponse9+

IsoDepTag.isExtendedApduSupported9+

IsoDepTag.isExtendedApduSupported9+

NdefMessage9+

NdefMessage.getNdefRecords9+

NdefTag9+

NdefTag.getNdefTagType9+

NdefTag.getNdefMessage9+

NdefTag.isNdefWritable9+

NdefTag.readNdef9+

NdefTag.readNdef9+

NdefTag.writeNdef9+

NdefTag.writeNdef9+

NdefTag.canSetReadOnly9+

NdefTag.setReadOnly9+

NdefTag.setReadOnly9+

NdefTag.getNdefTagTypeString9+

MifareClassicTag9+

MifareClassicTag.authenticateSector9+

MifareClassicTag.authenticateSector9+

MifareClassicTag.readSingleBlock9+

MifareClassicTag.readSingleBlock9+

MifareClassicTag.writeSingleBlock9+

MifareClassicTag.writeSingleBlock9+

MifareClassicTag.incrementBlock9+

MifareClassicTag.incrementBlock9+

MifareClassicTag.decrementBlock9+

MifareClassicTag.decrementBlock9+

MifareClassicTag.transferToBlock9+

MifareClassicTag.transferToBlock9+

MifareClassicTag.restoreFromBlock9+

MifareClassicTag.restoreFromBlock9+

MifareClassicTag.getSectorCount9+

MifareClassicTag.getBlockCountInSector9+

MifareClassicTag.getType9+

MifareClassicTag.getTagSize9+

MifareClassicTag.isEmulatedTag9+

MifareClassicTag.getBlockIndex9+

MifareClassicTag.getSectorIndex9+

MifareUltralightTag9+

MifareUltralightTag.readMultiplePages9+

MifareUltralightTag.readMultiplePages9+

MifareUltralightTag.writeSinglePage9+

MifareUltralightTag.writeSinglePage9+

MifareUltralightTag.getType9+

NdefFormatableTag9+

NdefFormatableTag.format9+

NdefFormatableTag.format9+

NdefFormatableTag.formatReadOnly9+

NdefFormatableTag.formatReadOnly9+

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本文目录

IsoDepTag⁹⁺

IsoDepTag.getHistoricalBytes⁹⁺

IsoDepTag.getHiLayerResponse⁹⁺

IsoDepTag.isExtendedApduSupported⁹⁺

IsoDepTag.isExtendedApduSupported⁹⁺

NdefMessage⁹⁺

NdefMessage.getNdefRecords⁹⁺

NdefTag⁹⁺

NdefTag.getNdefTagType⁹⁺

NdefTag.getNdefMessage⁹⁺

NdefTag.isNdefWritable⁹⁺

NdefTag.readNdef⁹⁺

NdefTag.readNdef⁹⁺

NdefTag.writeNdef⁹⁺

NdefTag.writeNdef⁹⁺

NdefTag.canSetReadOnly⁹⁺

NdefTag.setReadOnly⁹⁺

NdefTag.setReadOnly⁹⁺

NdefTag.getNdefTagTypeString⁹⁺

MifareClassicTag⁹⁺

MifareClassicTag.authenticateSector⁹⁺

MifareClassicTag.authenticateSector⁹⁺

MifareClassicTag.readSingleBlock⁹⁺

MifareClassicTag.readSingleBlock⁹⁺

MifareClassicTag.writeSingleBlock⁹⁺

MifareClassicTag.writeSingleBlock⁹⁺

MifareClassicTag.incrementBlock⁹⁺

MifareClassicTag.incrementBlock⁹⁺

MifareClassicTag.decrementBlock⁹⁺

MifareClassicTag.decrementBlock⁹⁺

MifareClassicTag.transferToBlock⁹⁺

MifareClassicTag.transferToBlock⁹⁺

MifareClassicTag.restoreFromBlock⁹⁺

MifareClassicTag.restoreFromBlock⁹⁺

MifareClassicTag.getSectorCount⁹⁺

MifareClassicTag.getBlockCountInSector⁹⁺

MifareClassicTag.getType⁹⁺

MifareClassicTag.getTagSize⁹⁺

MifareClassicTag.isEmulatedTag⁹⁺

MifareClassicTag.getBlockIndex⁹⁺

MifareClassicTag.getSectorIndex⁹⁺

MifareUltralightTag⁹⁺

MifareUltralightTag.readMultiplePages⁹⁺

MifareUltralightTag.readMultiplePages⁹⁺

MifareUltralightTag.writeSinglePage⁹⁺

MifareUltralightTag.writeSinglePage⁹⁺

MifareUltralightTag.getType⁹⁺

NdefFormatableTag⁹⁺

NdefFormatableTag.format⁹⁺

NdefFormatableTag.format⁹⁺

NdefFormatableTag.formatReadOnly⁹⁺

NdefFormatableTag.formatReadOnly⁹⁺