Getting Started

安装

bun add @capgo/capacitor-nfc
bunx cap sync

导入

import { CapacitorNfc } from '@capgo/capacitor-nfc';

API 概述

startScanning

开始监听NFC标签。

import { CapacitorNfc } from '@capgo/capacitor-nfc';

await CapacitorNfc.startScanning();

stopScanning

停止当前的NFC扫描会话。

import { CapacitorNfc } from '@capgo/capacitor-nfc';

await CapacitorNfc.stopScanning();

write

将提供的NDEF记录写入最后发现的标签。

import { CapacitorNfc } from '@capgo/capacitor-nfc';

await CapacitorNfc.write({} as WriteTagOptions);

erase

尝试通过写入空的NDEF消息来擦除最后发现的标签。

import { CapacitorNfc } from '@capgo/capacitor-nfc';

await CapacitorNfc.erase();

makeReadOnly

尝试将最后发现的标签设置为只读。

import { CapacitorNfc } from '@capgo/capacitor-nfc';

await CapacitorNfc.makeReadOnly();

share

通过对等连接（仅限Android）共享NDEF消息。

import { CapacitorNfc } from '@capgo/capacitor-nfc';

await CapacitorNfc.share({} as ShareTagOptions);

unshare

停止共享之前提供的NDEF消息（仅限Android）。

import { CapacitorNfc } from '@capgo/capacitor-nfc';

await CapacitorNfc.unshare();

getStatus

获取当前NFC适配器状态。

import { CapacitorNfc } from '@capgo/capacitor-nfc';

await CapacitorNfc.getStatus();

showSettings

打开系统设置页面，用户可以在此处启用NFC。

import { CapacitorNfc } from '@capgo/capacitor-nfc';

await CapacitorNfc.showSettings();

isSupported

检查设备是否支持NFC硬件。

返回 true 如果设备上存在NFC硬件，无论NFC是否当前启用或禁用，均返回true。 false 如果设备上没有NFC硬件，返回false。

使用此方法来确定是否在应用程序UI中显示NFC功能。要检查NFC是否当前启用，请使用 getStatus().

import { CapacitorNfc } from '@capgo/capacitor-nfc';

await CapacitorNfc.isSupported();

类型参考

StartScanningOptions

.行为控制选项

export interface StartScanningOptions {
  /**
   * iOS-only: closes the NFC session automatically after the first successful tag read.
   * Defaults to `true`.
   */
  invalidateAfterFirstRead?: boolean;
  /**
   * iOS-only: custom message displayed in the NFC system sheet while scanning.
   */
  alertMessage?: string;
  /**
   * iOS-only: session type to use for NFC scanning.
   * - `'ndef'`: Uses NFCNDEFReaderSession (default). Only detects NDEF-formatted tags.
   * - `'tag'`: Uses NFCTagReaderSession. Detects both NDEF and non-NDEF tags (e.g., raw MIFARE tags).
   *            Allows reading UID from unformatted tags.
   *            **Requires** the `Near Field Communication Tag Reader Session Formats` entitlement
   *            in your app with the `TAG` format included. Without it the session will fail to
   *            start and the promise will reject with a `NO_NFC` error code.
   * Defaults to `'ndef'` for backward compatibility.
   */
  iosSessionType?: 'ndef' | 'tag';
  /**
   * Android-only: raw flags passed to `NfcAdapter.enableReaderMode`.
   * Defaults to enabling all tag types with skipping NDEF checks.
   */
  androidReaderModeFlags?: number;
}

WriteTagOptions

用于在当前标签上写入 NDEF 消息的选项。

export interface WriteTagOptions {
  /**
   * Array of records that compose the NDEF message to be written.
   */
  records: NdefRecord[];
  /**
   * When `true`, the plugin attempts to format NDEF-formattable tags before writing.
   * Defaults to `true`.
   */
  allowFormat?: boolean;
}

ShareTagOptions

用于使用 Android Beam / P2P 模式共享 NDEF 消息的选项。

export interface ShareTagOptions {
  records: NdefRecord[];
}

NfcStatus

由 .返回的可能的 NFC 适配器状态。

export type NfcStatus = 'NFC_OK' | 'NO_NFC' | 'NFC_DISABLED' | 'NDEF_PUSH_DISABLED';

NfcEvent

插件发送的通用NFC发现事件。

export interface NfcEvent {
  type: NfcEventType;
  tag: NfcTag;
}

NfcStateChangeEvent

NFC适配器可用性发生变化时发出的事件。

export interface NfcStateChangeEvent {
  status: NfcStatus;
  enabled: boolean;
}

NdefRecord

表示单个NDEF记录的JSON结构。

export interface NdefRecord {
  /**
   * Type Name Format identifier.
   */
  tnf: number;
  /**
   * Type field expressed as an array of byte values.
   */
  type: number[];
  /**
   * Record identifier expressed as an array of byte values.
   */
  id: number[];
  /**
   * Raw payload expressed as an array of byte values.
   */
  payload: number[];
}

NfcEventType

描述发生的NFC发现类型的事件类型。

export type NfcEventType = 'tag' | 'ndef' | 'ndef-mime' | 'ndef-formatable';

NfcTag

原生层返回的全标签信息的表示

export interface NfcTag {
  /**
   * Raw identifier bytes for the tag.
   */
  id?: number[];
  /**
   * List of Android tech strings (e.g. `android.nfc.tech.Ndef`).
   */
  techTypes?: string[];
  /**
   * Human readable tag type when available (e.g. `NFC Forum Type 2`, `MIFARE Ultralight`).
   */
  type?: string | null;
  /**
   * Maximum writable size in bytes for tags that expose NDEF information.
   */
  maxSize?: number | null;
  /**
   * Indicates whether the tag can be written to.
   */
  isWritable?: boolean | null;
  /**
   * Indicates whether the tag can be permanently locked.
   */
  canMakeReadOnly?: boolean | null;
  /**
   * Array of NDEF records discovered on the tag.
   */
  ndefMessage?: NdefRecord[] | null;
}

真实数据来源

本页面由插件生成 src/definitions.ts当公共 API 上游发生变化时，请重新运行同步

从开始阶段继续

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