Flutter Android NFC未收到空的NFC标签

我正在使用Ffltter NFC_MANAGER在NFC标签上写东西. 它在iOS上运行得很好 但在Android中，当我试图在空的NFC标签上写入时，它会出现问题. 在具有现有数据的标签上写入数据可以很好地工作.我该怎么修呢？

这是我的iOS代码

  Future<bool> _ndefWrite(NdefMessage ndefMessage) async {
    Completer<bool> completer = Completer<bool>();

    await NfcManager.instance.startSession(
      pollingOptions: {NfcPollingOption.iso14443, NfcPollingOption.iso15693},
      alertMessage: "NFC 태그를 스캔해주세요.",
      onDiscovered: (NfcTag tag) async {
        var ndef = Ndef.from(tag);
        if (ndef == null || !ndef.isWritable) {
          _errorMessage = "쓰기가 불가능한 NFC 태그입니다.";
          NfcManager.instance.stopSession(errorMessage: _errorMessage);
          completer.complete(false); // Use completer to complete with false
        } else {
          try {
            await ndef.write(ndefMessage);
            _alertMessage = "NFC 태그에 성공적으로 기록하였습니다.";
            NfcManager.instance.stopSession(alertMessage: _alertMessage);
            completer.complete(true); // Complete with true upon success
          } catch (error) {
            _errorMessage = error.toString();
            NfcManager.instance.stopSession(errorMessage: _errorMessage);
            completer.complete(false); // Complete with false on error
          }
        }
      },
      onError: (NfcError error) async {
        _errorMessage = error.message;
        NfcManager.instance.stopSession(errorMessage: _errorMessage);
        completer.complete(false); // Complete with false on error
      }
    );

    return completer.future.timeout(const Duration(seconds: 10), onTimeout: () {
      NfcManager.instance.stopSession(errorMessage: "NFC 스캔 시간 초과.");
      if (!completer.isCompleted) {
        completer.complete(false); // Complete with false only if not already completed
      }
      return false;
    });
  }

这是我的Android代码 我认为问题在于当检测到代码中的空Tag时，它会变为null "Ndef.from(tag)" 但在iOS中，它工作得很好.

  Future<bool> _ndefWriteAndroid(NdefMessage ndefMessage) async {
    Completer<bool> completer = Completer<bool>();
    NFCDialog nfcDialog = NFCDialog(context: context, completer: completer);

    nfcDialog.show();
    await NfcManager.instance.startSession(
      onDiscovered: (NfcTag tag) async {
        Navigator.of(context, rootNavigator: true).pop();
        var ndef = Ndef.from(tag);
        if (ndef == null || !ndef.isWritable) {
          _errorMessage = "쓰기가 불가능한 NFC 태그입니다.";
          NfcManager.instance.stopSession(errorMessage: _errorMessage);
          completer.complete(false); // Use completer to complete with false
        } else {
          try {
            await ndef.write(ndefMessage);
            _alertMessage = "NFC 태그에 성공적으로 기록하였습니다.";
            NfcManager.instance.stopSession(alertMessage: _alertMessage);
            completer.complete(true); // Complete with true upon success
          } catch (error) {
            _errorMessage = error.toString();
            NfcManager.instance.stopSession(errorMessage: _errorMessage);
            completer.complete(false); // Complete with false on error
          }
        }
      },
    );

    return completer.future.timeout(const Duration(seconds: 10), onTimeout: () {
      Navigator.of(context, rootNavigator: true).pop();
      NfcManager.instance.stopSession(errorMessage: "NFC 스캔 시간 초과.");
      if (!completer.isCompleted) {
        completer.complete(false); // Complete with false only if not already completed
      }
      return false;
    });
  }

这是我在androidManifest.xml中的意图过滤器

    <intent-filter>
        <action android:name="android.intent.action.MAIN"/>
        <category android:name="android.intent.category.LAUNCHER"/>
    </intent-filter>
    <intent-filter>
        <action android:name="android.nfc.action.TECH_DISCOVERED" />
    </intent-filter>