diff --git a/NfcLock.Ios.Binding/ApiDefinition.cs b/NfcLock.Ios.Binding/ApiDefinition.cs
index 19307c4..8089a7c 100644
--- a/NfcLock.Ios.Binding/ApiDefinition.cs
+++ b/NfcLock.Ios.Binding/ApiDefinition.cs
@@ -7,39 +7,48 @@ namespace NfcLock.Ios.Binding
 	[DisableDefaultCtor]
 	interface NFCManager
 	{
-		// -(void)startScan;
+		// +(void)startScan;
+		[Static]
 		[Export ("startScan")]
 		void StartScan ();
 
-		// -(void)endScan;
+		// +(void)endScan;
+		[Static]
 		[Export ("endScan")]
 		void EndScan ();
 
-		// -(void)endScanWithErrorMessage:(NSString * _Nonnull)errorMessage;
+		// +(void)endScanWithErrorMessage:(NSString * _Nonnull)errorMessage;
+		[Static]
 		[Export ("endScanWithErrorMessage:")]
 		void EndScanWithErrorMessage (string errorMessage);
 
-		// -(void)setLoopCbWithCb:(id)cb;
+		// +(void)setLoopCbWithCb:(id)cb;
+		[Static]
 		[Export ("setLoopCbWithCb:")]
 		void SetLoopCbWithCb (NSObject cb);
 
-		// -(void)setFinishedCbWithCb:(void (^ _Nonnull)(void))cb;
+		// +(void)setFinishedCbWithCb:(void (^ _Nonnull)(void))cb;
+		[Static]
 		[Export ("setFinishedCbWithCb:")]
 		void SetFinishedCbWithCb (Action cb);
 
-		// -(void)setChargingCbWithCb:(void (^ _Nonnull)(NSString * _Nonnull, int))cb;
+		// +(void)setChargingCbWithCb:(void (^ _Nonnull)(NSString * _Nonnull, int))cb;
+		[Static]
 		[Export ("setChargingCbWithCb:")]
 		void SetChargingCbWithCb (Action<NSString, int> cb);
 
-		// -(void)setControllingCbWithCb:(void (^ _Nonnull)(NSString * _Nonnull, int))cb;
+		// +(void)setControllingCbWithCb:(void (^ _Nonnull)(NSString * _Nonnull, int))cb;
+		[Static]
 		[Export ("setControllingCbWithCb:")]
 		void SetControllingCbWithCb (Action<NSString, int> cb);
 
-		// -(void)lockWithPassword:(NSString * _Nonnull)password;
+		// +(void)lockWithPassword:(NSString * _Nonnull)password;
+		[Static]
 		[Export ("lockWithPassword:")]
 		void LockWithPassword (string password);
 
-		// -(void)unlockWithPassword:(NSString * _Nonnull)password;
+		// +(void)unlockWithPassword:(NSString * _Nonnull)password;
+		[Static]
 		[Export ("unlockWithPassword:")]
 		void UnlockWithPassword (string password);
 	}
diff --git a/NfcLock.Ios.Binding/NfcLockFramework/NfcLockFramework.xcodeproj/project.xcworkspace/xcuserdata/apple.xcuserdatad/UserInterfaceState.xcuserstate b/NfcLock.Ios.Binding/NfcLockFramework/NfcLockFramework.xcodeproj/project.xcworkspace/xcuserdata/apple.xcuserdatad/UserInterfaceState.xcuserstate
index 88eb74d..3da535e 100644
Binary files a/NfcLock.Ios.Binding/NfcLockFramework/NfcLockFramework.xcodeproj/project.xcworkspace/xcuserdata/apple.xcuserdatad/UserInterfaceState.xcuserstate and b/NfcLock.Ios.Binding/NfcLockFramework/NfcLockFramework.xcodeproj/project.xcworkspace/xcuserdata/apple.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/NfcLock.Ios.Binding/NfcLockFramework/NfcLockFramework/NfcLockFramework.swift b/NfcLock.Ios.Binding/NfcLockFramework/NfcLockFramework/NfcLockFramework.swift
index a22fd31..7f8e9f0 100644
--- a/NfcLock.Ios.Binding/NfcLockFramework/NfcLockFramework/NfcLockFramework.swift
+++ b/NfcLock.Ios.Binding/NfcLockFramework/NfcLockFramework/NfcLockFramework.swift
@@ -3,32 +3,88 @@ import NFCSDK
 
 @objc(NFCManager)
 public class NFCManager: NSObject, NFCTagReaderSessionDelegate {
+    // 单例实例（改为实例属性，而非直接用 static 方法）
     static let instance = NFCManager()
-    private let helper = IOSNFCHelper()
-    private var session: NFCTagReaderSession?
-    private var readyToStart = true
-    private var controlName = ""
+    // NFCSDK 助手（改为实例属性）
+    let helper = IOSNFCHelper()
+    // NFC 会话（改为实例属性）
+    var session: NFCTagReaderSession?
+    // 控制状态（改为实例属性）
+    var readyToStart = true
+    var controlName = ""
     
     private override init() {
-        
+        super.init()
+    }
+    
+    // MARK: - 对外暴露的 OC 调用方法（通过单例调用实例方法）
+    @objc
+    public static func startScan() {
+        instance._startScan()
     }
     
     @objc
-    public func startScan() {
-        if (readyToStart) {
+    public static func endScan() {
+        instance._endScan()
+    }
+    
+    @objc
+    public static func endScan(errorMessage: String) {
+        instance._endScan(errorMessage: errorMessage)
+    }
+    
+    @objc
+    public static func setLoopCb(cb: @escaping (String, Bool, Int) -> Bool) {
+        instance._setLoopCb(cb: cb)
+    }
+    
+    @objc
+    public static func setFinishedCb(cb: @escaping () -> Void) {
+        instance._setFinishedCb(cb: cb)
+    }
+    
+    @objc
+    public static func setChargingCb(cb: @escaping (String, Int) -> Void) {
+        instance._setChargingCb(cb: cb)
+    }
+    
+    @objc
+    public static func setControllingCb(cb: @escaping (String, Int) -> Void) {
+        instance._setControllingCb(cb: cb)
+    }
+    
+    @objc
+    public static func lock(password: String) {
+        instance._lock(password: password)
+    }
+    
+    @objc
+    public static func unlock(password: String) {
+        instance._unlock(password: password)
+    }
+    
+    // MARK: - 实际的实例方法（核心逻辑）
+    private func _startScan() {
+        // 1. 检查设备是否支持 NFC
+        guard NFCTagReaderSession.readingAvailable else {
+            _endScan(errorMessage: "设备不支持NFC功能")
+            return
+        }
+        
+        if readyToStart {
             readyToStart = false
+            // 2. 修复语法错误：移除末尾多余的逗号
             session = NFCTagReaderSession(
                 pollingOption: [.iso14443],
-                delegate: self,
-                queue: nil,
+                delegate: self,  // 这里必须传实例 self，而非静态的 self
+                queue: nil
             )
             session?.alertMessage = "请将 iPhone 靠近设备"
             session?.begin()
         }
     }
     
-    @objc
-    public func endScan() {
+    private func _endScan() {
         session?.invalidate()
         Task {
             try? await Task.sleep(nanoseconds: 2_000_000_000)
@@ -36,8 +92,7 @@ public class NFCManager: NSObject, NFCTagReaderSessionDelegate {
         }
     }
     
-    @objc
-    public func endScan(errorMessage: String) {
+    private func _endScan(errorMessage: String) {
         session?.invalidate(errorMessage: errorMessage)
         Task {
             try? await Task.sleep(nanoseconds: 2_000_000_000)
@@ -45,28 +100,98 @@ public class NFCManager: NSObject, NFCTagReaderSessionDelegate {
         }
     }
     
+    private func _setLoopCb(cb: @escaping (String, Bool, Int) -> Bool) {
+        helper.setLoopCb { id, isNew, rssi in
+            let isNew0 = isNew.boolValue
+            let rssi0 = rssi?.intValue ?? 0
+            self.session?.alertMessage = "检测到设备"
+            return KotlinBoolean(bool: cb(id, isNew0, rssi0))
+        }
+    }
+    
+    private func _setFinishedCb(cb: @escaping () -> Void) {
+        helper.setFinishedCb(cb: {
+            self._endScan()
+            cb()
+        })
+    }
+    
+    private func _setChargingCb(cb: @escaping (String, Int) -> Void) {
+        helper.setChargingCb { res, level in
+            let level0 = level?.intValue ?? 0
+            switch res {
+            case "OK":
+                self.session?.alertMessage = "充电中（\(level0)%）"
+            case "UNAUTHORIZED":
+                self._endScan(errorMessage: "验证失败")
+            default:
+                self._endScan(errorMessage: "NFC 标签丢失")
+            }
+            cb(res, level0)
+        }
+    }
+    
+    private func _setControllingCb(cb: @escaping (String, Int) -> Void) {
+        helper.setControllingCb { res, progress in
+            let progress0 = progress?.intValue ?? 0
+            switch res {
+            case "OK":
+                if progress0 < 100 {
+                    self.session?.alertMessage = "\(self.controlName)中（\(progress0)%）"
+                } else {
+                    self.session?.alertMessage = "\(self.controlName)成功"
+                }
+            default:
+                self._endScan(errorMessage: "\(self.controlName)失败")
+            }
+            cb(res, progress0)
+        }
+    }
+    
+    private func _lock(password: String) {
+        controlName = "关锁"
+        helper.lock(password: password)
+    }
+    
+    private func _unlock(password: String) {
+        controlName = "开锁"
+        helper.unlock(password: password)
+    }
+    
+    // MARK: - NFCTagReaderSessionDelegate 协议方法（必须是实例方法）
+    // 1. 可选方法：会话激活时调用（非必选，但建议保留）
     public func tagReaderSessionDidBecomeActive(_ session: NFCTagReaderSession) {
         print("NFC Session Active")
     }
     
+    // 2. 必选方法：会话失效/出错时调用
     public func tagReaderSession(_ session: NFCTagReaderSession, didInvalidateWithError error: Error) {
-        endScan()
+        // 区分用户主动取消和真实错误
+        if let nfcError = error as? NFCReaderError {
+            if nfcError.code != .readerSessionInvalidationErrorUserCanceled {
+                print("NFC 会话错误: \(nfcError.localizedDescription)")
+            }
+        }
+        _endScan()
     }
     
+    // 3. 必选方法：检测到 NFC 标签时调用
     public func tagReaderSession(_ session: NFCTagReaderSession, didDetect tags: [CoreNFC.NFCTag]) {
+        guard let tag = tags.first else {
+            _endScan(errorMessage: "未检测到有效NFC标签")
+            return
+        }
         
-        guard let tag = tags.first else { return }
-        
-        session.connect(to: tag) { error in
-            if error != nil {
-                self.endScan(errorMessage: "NFC 连接失败")
+        session.connect(to: tag) { [weak self] error in
+            guard let self = self else { return } // 避免循环引用
+            
+            if let error = error {
+                self._endScan(errorMessage: "NFC 连接失败: \(error.localizedDescription)")
                 return
             }
             
             switch tag {
-                
             case .miFare(let miFareTag):
-                
                 self.helper.setTransceiver { data, resolve in
                     let length = Int(data.size)
                     var buffer = [UInt8](repeating: 0, count: length)
@@ -76,8 +201,8 @@ public class NFCManager: NSObject, NFCTagReaderSessionDelegate {
                     let command = Data(buffer)
                     
                     miFareTag.sendMiFareCommand(commandPacket: command) { response, error in
-                        if error != nil {
-                            self.endScan(errorMessage: "NFC 标签丢失")
+                        if let error = error {
+                            self._endScan(errorMessage: "NFC 标签丢失: \(error.localizedDescription)")
                             let _ = resolve(KotlinByteArray(size: 0))
                             return
                         }
@@ -94,81 +219,13 @@ public class NFCManager: NSObject, NFCTagReaderSessionDelegate {
                     do {
                         try await self.helper.process()
                     } catch {
-                        print("process error")
+                        print("process error: \(error.localizedDescription)")
                     }
                 }
                 
-                
             default:
-                self.endScan(errorMessage: "不是 NFC-A 标签")
+                self._endScan(errorMessage: "不是 NFC-A 标签")
             }
         }
     }
-    
-    @objc
-    public func setLoopCb(cb: @escaping (String, Bool, Int) -> Bool) {
-        helper.setLoopCb { id, isNew, rssi in
-            let isNew0 = isNew.boolValue
-            let rssi0 = rssi?.intValue ?? 0
-            self.session?.alertMessage = "检测到设备"
-            return KotlinBoolean(bool: cb(id, isNew0, rssi0))
-        }
-    }
-    
-    @objc
-    public func setFinishedCb(cb: @escaping () -> Void) {
-        helper.setFinishedCb(cb: {
-            self.endScan()
-            cb()
-        })
-    }
-
-    @objc
-    public func setChargingCb(cb: @escaping (String, Int) -> Void) {
-        helper.setChargingCb { res, level in
-            let level0 = level?.intValue ?? 0
-            switch (res) {
-            case "OK":
-                self.session?.alertMessage = "充电中（\(level0)%）"
-                break
-            case "UNAUTHORIZED":
-                self.endScan(errorMessage: "验证失败")
-                break
-            default:
-                self.endScan(errorMessage: "NFC 标签丢失")
-            }
-            cb(res, level0)
-        }
-    }
-    
-    @objc
-    public func setControllingCb(cb: @escaping (String, Int) -> Void) {
-        helper.setControllingCb { res, progress in
-            let progress0 = progress?.intValue ?? 0
-            switch (res) {
-            case "OK":
-                if (progress0 < 100) {
-                    self.session?.alertMessage = "\(self.controlName)中（\(progress0)%）"
-                } else {
-                    self.session?.alertMessage = "\(self.controlName)成功"
-                }
-                break
-            default:
-                self.endScan(errorMessage: "\(self.controlName)失败")
-            }
-            cb(res, progress0)
-        }
-    }
-    
-    @objc
-    public func lock(password: String) {
-        controlName = "关锁"
-        helper.lock(password: password)
-    }
-    
-    @objc
-    public func unlock(password: String) {
-        controlName = "开锁"
-        helper.unlock(password: password)
-    }
 }