NFC csak Androidra javítás ...

src/WorkFlowCheck.MAUI/Platforms/Android/AndroidManifest.xml

@@ -10,5 +10,5 @@
     <uses-permission android:name="android.permission.CAMERA"/>
 
 
-    <uses-feature android:name="android.hardware.nfc" android:required="false" />
+    <uses-feature android:name="android.hardware.nfc" android:required="true" />
 </manifest>

src/WorkFlowCheck.MAUI/Platforms/Android/MainActivity.cs

@@ -1,40 +1,68 @@
 using Android.App;
 using Android.Content;
 using Android.Content.PM;
+using Android.Nfc;
 using Android.OS;
-using Plugin.NFC;
+
 
 namespace WorkFlowCheck.MAUI
 {
     [Activity(Theme = "@style/Maui.SplashTheme", MainLauncher = true, LaunchMode = LaunchMode.SingleTop, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize | ConfigChanges.Density)]
     public class MainActivity : MauiAppCompatActivity
     {
+        NfcAdapter nfcAdapter;
+        PendingIntent pendingIntent;
+        static Action<string> _onTagRead;
+
         protected async override void OnDestroy()
         {
             SecureStorage.Default.Remove("WFCUser");
             SecureStorage.Default.Remove("AuthToken");
             base.OnDestroy();
         }
+        
         protected override void OnCreate(Bundle savedInstanceState)
         {
-            // Plugin NFC: Initialization before base.OnCreate(...) (Important on .NET MAUI)
-            CrossNFC.Init(this);
-
             base.OnCreate(savedInstanceState);
-        }
-        protected override void OnResume()
-        {
-            base.OnResume();
+            nfcAdapter = NfcAdapter.GetDefaultAdapter(this);
+            pendingIntent = PendingIntent.GetActivity(this, 0,
+                            new Intent(this, typeof(MainActivity)).AddFlags(ActivityFlags.SingleTop),
+                            Build.VERSION.SdkInt >= BuildVersionCodes.S ? PendingIntentFlags.Mutable : PendingIntentFlags.UpdateCurrent);
 
-            // Plugin NFC: Restart NFC listening on resume (needed for Android 10+) 
-            CrossNFC.OnResume();
         }
+        
         protected override void OnNewIntent(Intent intent)
         {
             base.OnNewIntent(intent);
 
-            // Plugin NFC: Tag Discovery Interception
-            CrossNFC.OnNewIntent(intent);
+            if (intent.Action == NfcAdapter.ActionTagDiscovered)
+            {
+                var tag = intent.GetParcelableExtra(NfcAdapter.ExtraTag) as Tag;
+                var id = tag?.GetId();
+                if (id != null)
+                {
+                    var hex = BitConverter.ToString(id).Replace("-", "");
+                    _onTagRead?.Invoke(hex);
+                }
+            }
+        }
+
+        public void StartNfc(Action<string> onTagRead)
+        {
+            _onTagRead = onTagRead;
+            if (nfcAdapter.IsEnabled)
+            {
+                nfcAdapter?.EnableForegroundDispatch(this, pendingIntent, null, null);
+            }
+        }
+       
+        public void StopNfc()
+        {
+            _onTagRead = null;
+            //if (!IsFinishing && !IsDestroyed)
+            //{
+            //    nfcAdapter?.DisableForegroundDispatch(this);
+            //}
         }
     }
 }