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    NFC－NFCAdapter

    Last updated: 2024-11-21 18:48:11
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      NFCAdapter

      Parameters and Description: Object tech, enumeration of tag types.
      Attributes
      Types
      Note
      ndef
      String
      Corresponds to the Ndef instance, the instance supports reading and writing of NDEF data on NFC tags in NDEF format.
      nfcA
      String
      Corresponds to the NfcA instance, the instance supports reading and writing in accordance with the NFC-A (ISO 14443-3A) standard.
      nfcB
      String
      Corresponds to the NfcB instance, the instance supports reading and writing in accordance with the NFC-B (ISO 14443-3B) standard.
      isoDep
      String
      Corresponds to the IsoDep instance, the instance supports reading and writing in accordance with the ISO-DEP (ISO 14443-4) standard.
      nfcF
      String
      Corresponds to the NfcF instance, the instance supports reading and writing in accordance with the NFC-F (JIS 6319-4) standard.
      nfcV
      String
      Corresponds to the NfcV instance, the instance supports reading and writing in accordance with the NFC-V (ISO 15693) standard.
      mifareClassic
      String
      Corresponds to the MifareClassic instance, the instance supports reading and writing of MIFARE Classic tags.
      mifareUltralight
      String
      Corresponds to the MifareUltralight instance, the instance supports reading and writing of MIFARE Ultralight tags.

      .startDiscovery

      The method is utilized as NFCAdapter.startDiscovery().
      Parameters and Description: Object object.
      Attributes
      Types
      Default value
      Required
      Note
      success
      Function
      -
      Not required
      Callback function for successful interface invocation
      fail
      Function
      -
      Not required
      Callback function for successful interface invocation
      complete
      Function
      -
      Not required
      Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations)
      Error Code
      Error Codes
      Error Message
      Note
      13000
      The device does not support NFC
      -
      13001
      The system's NFC switch is not activated.
      -
      13010
      An unknown error occurred.
      -
      13019
      user is not authorized
      User Authorization Denied
      13011
      invalid parameter
      Invalid parameter
      13012
      parse NdefMessage failed
      Failed to parse the parameter into NdefMessage.
      13021
      NFC discovery already started
      NFC scanning has already commenced.
      13018
      NFC discovery has not started
      Attempted to halt NFC scanning without initiating it.
      13022
      Tech already connected
      The tag has been successfully connected.
      13023
      Tech has not connected
      Attempted to disconnect without a tag being connected.
      13013
      NFC tag has not been discovered
      No NFC tag was detected.
      13014
      invalid tech
      Invalid tag technology.
      13015
      unavailable tech
      Failed to acquire the corresponding technology from the tag.
      13024
      function not support
      The current tag technology does not support this feature.
      13017
      system internal error
      The related read-write operation has failed.
      13016
      connect fail
      Connection failed

      .stopDiscovery

      The method is utilized as NFCAdapter.stopDiscovery().
      Parameters and Description: Object object.
      Attributes
      Types
      Default value
      Required
      Note
      success
      function
      -
      Not required
      Callback function for successful interface invocation
      fail
      function
      -
      Not required
      Callback function for unsuccessful interface invocation
      complete
      function
      -
      Not required
      Callback function executed upon the completion of the interface invocation (both successful and unsuccessful invocations)
      Error Code
      Error Codes
      Error Message
      Note
      13000
      The device does not support NFC
      -
      13001
      The system's NFC switch is not activated.
      -
      13010
      An unknown error occurred.
      -
      13019
      user is not authorized
      User Authorization Denied
      13011
      invalid parameter
      Invalid parameter
      13012
      parse NdefMessage failed
      Failed to parse the parameter into NdefMessage.
      13021
      NFC discovery already started
      NFC scanning has already commenced.
      13018
      NFC discovery has not started
      Attempted to halt NFC scanning without initiating it.
      13022
      Tech already connected
      The tag has been successfully connected.
      13023
      Tech has not connected
      Attempted to disconnect without a tag being connected.
      13013
      NFC tag has not been discovered
      No NFC tag was detected.
      13014
      invalid tech
      Invalid tag technology.
      13015
      unavailable tech
      Failed to acquire the corresponding technology from the tag.
      13024
      function not support
      The current tag technology does not support this feature.
      13017
      system internal error
      The related read-write operation has failed.
      13016
      connect fail
      Connection failed

      .getNdef

      The method is employed as Ndef NFCAdapter.getNdef().
      Function Description: Acquire the Ndef instance, which supports reading and writing of NDEF data on NFC tags in NDEF format.
      Return Value: Ndef.

      .getNfcA

      The method is implemented as NfcA NFCAdapter.getNfcA().
      Function Description: Obtain the NfcA instance, which supports reading and writing in accordance with the NFC-A (ISO 14443-3A) standard.
      Return Value: NfcA.

      .getNfcB

      The method is utilized as NfcB NFCAdapter.getNfcB().
      Function Description: Acquire the NfcB instance, which facilitates reading and writing in compliance with the NFC-B (ISO 14443-3B) standard.
      Return Value: NfcB.

      .getNfcF

      The method is employed as NfcF NFCAdapter.getNfcF().
      Function Description: Procure the NfcF instance, which supports reading and writing in accordance with the NFC-F (JIS 6319-4) standard.
      Return Value: NfcF.

      .getNfcV

      The method is utilized as NfcV NFCAdapter.getNfcV().
      Function Description: Acquire the NfcV instance, which supports reading and writing in compliance with the NFC-V (ISO 15693) standard.
      Return Value: NfcV.

      .getIsoDep

      The method is employed as IsoDep NFCAdapter.getIsoDep().
      Function Description: Obtain the IsoDep instance, which supports reading and writing in accordance with the ISO-DEP (ISO 14443-4) standard.
      Return Value: IsoDep.

      .getMifareClassic

      The method is utilized as MifareClassic NFCAdapter.getMifareClassic().
      Function Description: Acquire the MifareClassic instance, which supports reading and writing of MIFARE Classic tags.
      Return Value: MifareUltralight.

      .getMifareUltralight

      The method is employed as MifareUltralight NFCAdapter.getMifareUltralight().
      Function Description: Obtain the MifareUltralight instance, which supports the reading and writing of MIFARE Ultralight tags.
      Parameter Description: MifareUltralight.

      .onDiscovered

      The method is utilized as NFCAdapter.onDiscovered(function listener).
      Function Description: Monitor NFC Tag.
      Parameter Description:function listener, listener function, with the following arguments Object res:
      Attributes
      Types
      Note
      id
      ArrayBuffer
      -
      techs
      Array
      Tech array, used to match which specific standards (such as NfcA instances) can be used to handle NFC cards.
      messages
      Array
      NdefMessage array, the message format is {id: ArrayBuffer, type: ArrayBuffer, payload: ArrayBuffer}.

      .offDiscovered

      The method is utilized as NFCAdapter.offDiscovered(function listener).
      Function Description: Remove the listener function of the NFC Tag.
      Parameters and Description: function listener, the listening function passed in by onDiscovered. If this parameter is not passed, all listening functions will be removed.
      Example Code
      const listener = function (res) { console.log(res) }
      
      NFCAdapter.onDiscovered(listener)
      NFCAdapter.offDiscovered(listener) // The same function object as the listener must be passed in.
      
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