如何使用nfc(android studio)获取卡号

<uses-permission android:name="android.permission.NFC" />
<uses-feature android:name="android.hardware.nfc" android:required="true" />

NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
if (nfcAdapter == null) {
    // 设备不支持NFC
    // 在这里处理设备不支持NFC的情况
}

@Override
protected void onResume() {
    super.onResume();
    IntentFilter intentFilter = new IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED);
    try {
        intentFilter.addDataType("text/plain");
        IntentFilter[] intentFiltersArray = new IntentFilter[]{intentFilter};
        nfcAdapter.enableForegroundDispatch(this, pendingIntent, intentFiltersArray, null);
    } catch (IntentFilter.MalformedMimeTypeException e) {
        e.printStackTrace();
    }
}

@Override
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);
    if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(intent.getAction())) {
        Parcelable[] rawMessages = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);
        if (rawMessages != null) {
            NdefMessage[] messages = new NdefMessage[rawMessages.length];
            for (int i = 0; i < rawMessages.length; i++) {
                messages[i] = (NdefMessage) rawMessages[i];
            }
            if (messages.length > 0) {
                NdefRecord record = messages[0].getRecords()[0];
                String cardNumber = new String(record.getPayload());
                // 在这里处理获取到的卡号
            }
        }
    }
}