上传短信无法取消的问题

local_plugins/chat_api/ios/chat_api/Sources/chat_api/SystemFunctionHandler.swift

@@ -568,7 +568,9 @@ private class TranslationModeHandler: FunctionHandler {
 }
 
 /// 发送短信处理器
-private class SendTextMessageHandler: FunctionHandler {
+private class SendTextMessageHandler: NSObject, FunctionHandler, MFMessageComposeViewControllerDelegate {
+    private var continuation: CheckedContinuation<Result, Never>?
+    
     func handle(arguments: [String: Any]) async throws -> String {
         guard let contact = arguments["contact"] as? String,
               let message = arguments["message"] as? String else {
@@ -581,17 +583,19 @@ private class SendTextMessageHandler: FunctionHandler {
     
     private func sendTextMessage(contact: String, message: String) async -> Result {
         return await withCheckedContinuation { continuation in
+            self.continuation = continuation
             DispatchQueue.main.async {
                 if MFMessageComposeViewController.canSendText() {
                     let messageVC = MFMessageComposeViewController()
                     messageVC.recipients = [contact]
                     messageVC.body = message
+                    messageVC.messageComposeDelegate = self  // 设置 delegate
                     
                     if let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene,
                        let window = windowScene.windows.first,
                        let rootViewController = window.rootViewController {
                         rootViewController.present(messageVC, animated: true)
-                        continuation.resume(returning: Result(success: true, message: "短信界面已打开"))
+                        // 不在这里立即返回结果，等待用户操作
                     } else {
                         continuation.resume(returning: Result(success: false, message: "无法打开短信界面"))
                     }
@@ -601,6 +605,33 @@ private class SendTextMessageHandler: FunctionHandler {
             }
         }
     }
+    
+    // MARK: - MFMessageComposeViewControllerDelegate
+    func messageComposeViewController(_ controller: MFMessageComposeViewController, didFinishWith result: MessageComposeResult) {
+        controller.dismiss(animated: true) {
+            // 在界面关闭后返回结果
+            let message: String
+            let success: Bool
+            
+            switch result {
+            case .cancelled:
+                message = "用户取消发送短信"
+                success = false
+            case .sent:
+                message = "短信发送成功"
+                success = true
+            case .failed:
+                message = "短信发送失败"
+                success = false
+            @unknown default:
+                message = "未知结果"
+                success = false
+            }
+            
+            self.continuation?.resume(returning: Result(success: success, message: message))
+            self.continuation = nil
+        }
+    }
 }
 
 /// 拨打电话处理器