.NET MAUI iOS端NFC标签扫描无法检测标签的问题求助

开发一款.NET MAUI应用，NFC标签扫描是核心需求之一。Android端从检测NFC标签、获取到处理Payload均已正常实现，但iOS端始终无法检测到NFC标签。

iOS NFC读取服务实现 #

实现的简易iOS NFC服务代码如下：

using CoreFoundation;
using CoreNFC;
using Foundation;
using MSS.App.Services.Interfaces;
using System;
using UIKit;

namespace OurAppNamespace.Platforms.iOS.Services
{
    public class IosNfcService : NFCTagReaderSessionDelegate, INfcService
    {
        private readonly ILogService? _logService;

        private NFCTagReaderSession? _nfcSession;

        public IosNfcService(ILogService? logService)
        {
            _logService = logService;
        }

        public async void Enable()
        {
            _logService?.LogInfo($"{this}.Enable");

            try
            {
                var isNfcAvailable = UIDevice.CurrentDevice.CheckSystemVersion(13, 0);

                _logService?.LogInfo($"{this}.Enable > {nameof(isNfcAvailable)} = {isNfcAvailable}");

                if (isNfcAvailable)
                {
                    _nfcSession = new NFCTagReaderSession(NFCPollingOption.Iso14443 | NFCPollingOption.Iso15693, this, DispatchQueue.CurrentQueue)
                    {
                        AlertMessage = "Test123"
                    };
                    _nfcSession.BeginSession();

                    _logService?.LogInfo($"{this}.Enable > Session started.");
                }
            }
            catch (Exception exception)
            {
                _logService?.LogError($"{this}.Enable > Starting Reader Session failed.", exception);
            }
        }

        public override void DidBecomeActive(NFCTagReaderSession session)
        {
            _logService?.LogInfo($"{this}.DidBecomeActive");
        }

        public override void DidInvalidate(NFCTagReaderSession session, NSError error)
        {
            _logService?.LogInfo($"{this}.DidInvalidate");
        }

        public override void DidDetectTags(NFCTagReaderSession session, INFCTag[] tags)
        {
            _logService?.LogInfo($"{this}.DidDetectTags");
        }

        public void Disable()
        {
            _logService?.LogInfo($"{this}.Disable");

            _nfcSession?.InvalidateSession();
        }
    }
}

按照预期，手机靠近NFC标签时应触发DidDetectTags方法，但实际并未触发。

Info.plist配置 #

在Platforms/iOS下的Info.plist中添加了NFC权限配置：

<key>NFCReaderUsageDescription</key>
<string>NFC tag to read NDEF messages into the application</string>
<key>com.apple.developer.nfc.readersession.iso7816.select-identifiers</key>
<array>
    <string>com.apple.developer.nfc.readersession.iso7816.select-identifiers</string>
    <string>D2760000850100</string>
</array>

Entitlements.plist配置 #

作为首个iOS目标应用，已按照官方指南配置Entitlements.plist：

• 在Platforms/iOS下添加空的Entitlements.plist文件
• 在项目设置的iOS>Bundle Signing中配置自定义权限文件

配置后项目文件中自动添加了对应的PropertyGroup：

<PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net8.0-ios|AnyCPU'">
  <CodesignEntitlements>Platforms\iOS\Entitlements.plist</CodesignEntitlements>
</PropertyGroup>

<PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|net8.0-ios|AnyCPU'">
  <CodesignEntitlements>Platforms\iOS\Entitlements.plist</CodesignEntitlements>
</PropertyGroup>

测试结果 #

已清理bin和obj文件夹，删除设备上的旧版本并重启设备后重新构建应用：

• 应用可正常打开，能看到Enable方法的日志，但DidDetectTags始终未触发
• 若在Entitlements.plist中勾选“Near Field Communication Tag Reading”，应用无法部署，Xamarin日志报错：

Xamarin.Messaging.IDB.Local.DeployAppMessageHandler Error: 0 : An error occurred while trying to deploy the app '[APP_NAME]'. Details: Could not install the application '[PATH]\[APP_NAME]\out\[APP].ipa' on the device [TEST_DEVICE]. Details: ApplicationVerificationFailed|0xE8008015 - Failed to verify code signature of /var/installd/Library/Caches/com.apple.mobile.installd.staging/temp.59k3xO/extracted/Payload/[APP_NAME] : 0xe8008015 (A valid provisioning profile for this executable was not found.)
Xamarin.iOS.Windows.WindowsiOSException: Could not install the application '[LOCAL_PATH]\[APP_NAME]\out\[APP].ipa' on the device [TEST_DEVICE]. Details: ApplicationVerificationFailed|0xE8008015 - Failed to verify code signature of /var/installd/Library/Caches/com.apple.mobile.installd.staging/temp.59k3xO/extracted/Payload/[APP_NAME] : 0xe8008015 (A valid provisioning profile for this executable was not found.)
   at Xamarin.iOS.Windows.Installer.ApplicationSession.InstallApp(String appPath, String appBundleId) in D:\a\_work\1\s\src\Tools\Xamarin.iOS.Windows.Client\Installer\ApplicationSession.cs:line 276
   at Xamarin.iOS.Windows.Installer.ApplicationSession.Deploy(String appRootFolder, String appBundleId, String appName) in D:\a\_work\1\s\src\Tools\Xamarin.iOS.Windows.Client\Installer\ApplicationSession.cs:line 95
   at Xamarin.iOS.Windows.HotRestartClient.Deploy(AppleDevice nativeDevice, String appBundleId, String appBundleName, Boolean& incremental) in D:\a\_work\1\s\src\Tools\Xamarin.iOS.Windows.Client\HotRestartClient.cs:line 250
   at Xamarin.Messaging.IDB.Local.DeployAppMessageHandler.<ExecuteAsync>d__5.MoveNext() in D:\a\_work\1\s\src\Messaging\Xamarin.Messaging.IDB.Local\Handlers\DeployAppMessageHandler.cs:line 43: 04/04/2024 16:20:09Z
    DateTime=2024-04-04T16:20:09.7343180Z: 04/04/2024 16:20:09Z

取消勾选后应用可正常运行，但仍无法检测NFC标签，特此求助。

内容的提问来源于stack exchange，提问作者BeRo