SwiftUI应用集成Facebook登录遇Graph API请求错误求助

我在SwiftUI应用中集成Facebook登录功能，无论是通过TestFlight安装到真机，还是在模拟器测试时，都遇到了错误：Error: The operation could not be completed. (Could not make graph API request error -1)。登录流程能走到“登录成功”的打印，但后续调用Graph API获取用户数据时失败。

相关登录函数代码：

func loginWithFacebook() {
        let loginManager = LoginManager()
        
        loginManager.logOut()

        loginManager.logIn(permissions: ["public_profile"], from: nil) { result, error in
            if let error = error {
//                showAlert(msg: "Facebook login failed with error: \(error.localizedDescription)")
                print("Facebook login failed with error: \(error.localizedDescription)")
                // Handle login failure
            } else if result?.isCancelled == true {
//                showAlert(msg: "Facebook login was cancelled")
                print("Facebook login was cancelled")
                // Handle login cancellation
            } else {
                print("Facebook login successful")
                
                guard let token = AccessToken.current else { return }
                
                if token.hasGranted(permission: "public_profile") {
                    // Perform a Graph API request to get user's profile data
                    let graphRequest = GraphRequest(graphPath: "me", parameters: ["fields": "id,name"], tokenString: token.tokenString, version: nil, httpMethod: .get)

                    graphRequest.start { _, result, error in
                        if let error = error {
                            showAlert(msg: "Failed to fetch Facebook user data: \(error.localizedDescription)")
                            print("Failed to fetch Facebook user data: \(error.localizedDescription)")
                            // Handle the error
                        } else if let userData = result as? [String: Any] {
                            // Extract user information
                            if let userID = userData["id"] as? String,
                               let userName = userData["name"] as? String {
                                print("User ID: \(userID)")
                                print("User Name: \(userName)")

                                // Perform additional actions with the user data
                                otherLogingType = "facebook"
                                submitOtherLogin(username: userName, userEmail: "", userId: userID)
//                                showAlert(msg: "No issue with Facebook, check other login API")
                            }
                        }
                    }
                }
            }
        }
    }

可能的解决方案 #

• 检查Facebook应用平台配置

  1. 确认Facebook开发者后台中，iOS平台的Bundle ID和应用的开发/TestFlight分发Bundle ID完全一致。
  2. 检查Server IP Allowlist是否开启了不必要的IP限制，导致Graph API请求被拦截。
  3. 确保iOS平台的Single Sign On选项已启用。

• 显式指定Graph API版本
  创建GraphRequest时未指定版本会使用SDK默认旧版本，可能存在兼容性问题，建议显式指定当前可用的最新版本：

  let graphRequest = GraphRequest(graphPath: "me", 
                                 parameters: ["fields": "id,name"], 
                                 tokenString: token.tokenString, 
                                 version: "v18.0", // 替换为当前最新版本
                                 httpMethod: .get)
  

• 网络ATS配置检查
  在Info.plist中配置正确的App Transport Security规则，确保允许Facebook域名的HTTPS请求：

  <key>NSAppTransportSecurity</key>
  <dict>
      <key>NSExceptionDomains</key>
      <dict>
          <key>facebook.com</key>
          <dict>
              <key>NSIncludesSubdomains</key>
              <true/>
              <key>NSThirdPartyExceptionRequiresForwardSecrecy</key>
              <true/>
          </dict>
          <key>fbcdn.net</key>
          <dict>
              <key>NSIncludesSubdomains</key>
              <true/>
              <key>NSThirdPartyExceptionRequiresForwardSecrecy</key>
              <true/>
          </dict>
      </dict>
  </dict>
  

• AccessToken有效性验证
  调用Graph API前，确保Token未过期且有效：

  guard let token = AccessToken.current, !token.isExpired else {
      print("Facebook token is invalid or expired")
      return
  }
  

• SDK版本与能力配置

  1. 更新Facebook SDK到最新版本，确保与当前Xcode、iOS版本兼容。
  2. 检查应用Signing & Capabilities中，已添加fb<你的APP_ID>格式的URL Scheme。

内容的提问来源于stack exchange，提问作者Minhaj Ahmed