解决view的状态变化问题

punchnet/Core/VPNManager.swift

@@ -8,12 +8,16 @@
 import Foundation
 import NetworkExtension
 import SwiftUI
+import Observation
 
 // vpn管理类
+@Observable
 class VPNManager {
     static let shared = VPNManager()
     
-    private var observation: NSKeyValueObservation?
+    private var manager: NETunnelProviderManager?
+    private var statusObserver: NSObjectProtocol?
+    
     var vpnStatus: VPNStatus = .disconnected
     
     enum VPNStatus {
@@ -30,26 +34,34 @@ class VPNManager {
         NSLog("enable vpn with options: \(options)")
         let manager = try await loadAndCreateProviderManager()
         try await manager.loadFromPreferences()
-        self.addVPNStatusObserver(manager)
+        self.manager = manager
         
+        self.addVPNStatusObserver(manager)
         try manager.connection.startVPNTunnel(options: options)
     }
     
     // 关闭vpn
     func disableVpn() async throws {
-        let managers = try await NETunnelProviderManager.loadAllFromPreferences()
-        managers.first?.connection.stopVPNTunnel()
+        guard let manager = self.manager else {
+            return
+        }
+        
+        try await manager.loadFromPreferences()
+        manager.connection.stopVPNTunnel()
     }
     
     // MARK: - Private Methods
     
     // 监控系统VPN的状态的变化
     private func addVPNStatusObserver(_ manager: NETunnelProviderManager) {
-        self.observation = manager.connection.observe(\.status, options: [.initial, .new]) {[weak self] connection, change in
-            guard let status = change.newValue else {
-                return
-            }
-            switch status {
+        if let statusObserver {
+            NotificationCenter.default.removeObserver(statusObserver)
+            self.statusObserver = nil
+        }
+        
+        self.statusObserver = NotificationCenter.default.addObserver(forName: .NEVPNStatusDidChange, object: manager.connection, queue: .main) {[weak self] _ in
+            NSLog("status channge: \(manager.connection.status)")
+            switch manager.connection.status {
             case .invalid, .disconnected, .disconnecting:
                 self?.vpnStatus = .disconnected
             case .connecting, .connected, .reasserting:
@@ -86,7 +98,9 @@ class VPNManager {
     }
     
     deinit {
-        NotificationCenter.default.removeObserver(self)
+        if let statusObserver {
+            NotificationCenter.default.removeObserver(statusObserver)
+        }
     }
     
 }

punchnet/Views/Network/NetworkView.swift

@@ -22,6 +22,7 @@ struct NetworkView: View {
     // 状态管理
     @State private var connectState: ConnectState = .disconnected
     @State private var isOn: Bool = false
+    @State private var vpnManager: VPNManager = VPNManager.shared
 
     // 展示状态
     enum ShowMode {
@@ -93,7 +94,8 @@ struct NetworkView: View {
         }
         .padding(.top, 10)
         .padding(.leading, 10)
-        .onChange(of: VPNManager.shared.vpnStatus) { _, newState in
+        .onChange(of: vpnManager.vpnStatus) { _, newState in
+            NSLog("print view change: \(newState)")
             switch newState {
             case .connected:
                 self.connectState = .connected