유니티 C# NFC 태그 리더 읽기 쓰기 사용 방법 간단 구현

유니티 C# NFC 태그 리더 읽기 쓰기 사용 방법 간단 구현

NFCManager.cs

using UnityEngine;

public class NFCManager : MonoBehaviour
{
    AndroidJavaObject nfcActivity;

    void Start()
    {
        if (Application.platform == RuntimePlatform.Android)
        {
            using (AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
            {
                AndroidJavaObject activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");
                nfcActivity = new AndroidJavaObject("com.example.nfcplugin.NFCActivity", activity);
            }
        }
    }

    public void EnableNFC()
    {
        if (nfcActivity != null)
        {
            nfcActivity.Call("enableNFC");
        }
    }

    public void DisableNFC()
    {
        if (nfcActivity != null)
        {
            nfcActivity.Call("disableNFC");
        }
    }

    public void ReadNFC()
    {
        if (nfcActivity != null)
        {
            string tagData = nfcActivity.Call<string>("readNFC");
            Debug.Log("NFC Tag Data: " + tagData);
        }
    }
}

 

Android NFC 기능 구현 (NFCActivity.java)

package com.example.nfcplugin;

import android.app.Activity;
import android.nfc.NfcAdapter;
import android.nfc.Tag;
import android.nfc.tech.NfcV;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;

public class NFCActivity {
    private NfcAdapter nfcAdapter;
    private Activity activity;
    private String nfcData;

    public NFCActivity(Activity unityActivity) {
        this.activity = unityActivity;
        nfcAdapter = NfcAdapter.getDefaultAdapter(activity);
    }

    public void enableNFC() {
        if (nfcAdapter != null && !nfcAdapter.isEnabled()) {
            Toast.makeText(activity, "NFC 활성화 필요", Toast.LENGTH_SHORT).show();
            // NFC 설정 창으로 이동
            activity.startActivity(new Intent(android.provider.Settings.ACTION_NFC_SETTINGS));
        }
    }

    public void disableNFC() {
        // 필요 시 NFC 비활성화 처리
    }

    public String readNFC() {
        // NFC 태그 읽기 처리
        Tag detectedTag = activity.getIntent().getParcelableExtra(NfcAdapter.EXTRA_TAG);
        if (detectedTag != null) {
            nfcData = bytesToHex(detectedTag.getId());
        }
        return nfcData;
    }

    private String bytesToHex(byte[] bytes) {
        StringBuilder sb = new StringBuilder();
        for (byte b : bytes) {
            sb.append(String.format("%02X", b));
        }
        return sb.toString();
    }
}

 

AndroidManifest 수정

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

<application>
    <activity android:name=".NFCActivity">
        <intent-filter>
            <action android:name="android.nfc.action.TAG_DISCOVERED"/>
            <category android:name="android.intent.category.DEFAULT"/>
        </intent-filter>
    </activity>
</application>