复现步骤： 一 cocoapods 安装 open sdk，版本 1.8.7.1： pod 'WechatOpenSDK' 二 在 Info.plist 配置 Schema 以及 URL Types 中配置 微信 appId： [图片] 三 AppDelegate 注册 WXApi 及实现 WXApiDelegate： @UIApplicationMain class AppDelegate: UIResponder, UIApplicationDelegate { func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {         // WechatOpenSDK         WXApi.startLog(by: .detail) { (msg) in             print("WXApi log: \(msg)")         } // 已使用 safari 验证 "https://sub.domain.com/link" 可以正常调起 app         WXApi.registerApp(Configs.WeChat.appID, universalLink: "https://sub.domain.com/link")         print("WXApi version: \(WXApi.getVersion())")         return true } func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool { return WXApi.handleOpen(url, delegate: self)   } func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool {         return WXApi.handleOpenUniversalLink(userActivity, delegate: self)   } } extension AppDelegate: WXApiDelegate {     // wechat delegate     func onReq(_ req: BaseReq) {         print("wechat onReq \(req.debugDescription)")     }     func onResp(_ resp: BaseResp) {         print("wechat onResp \(resp.debugDescription)")     } } 四 在 ViewController 调用 WXApi 的 方法： + (void)sendReq:(BaseReq *)req completion:(void (^ __nullable)(BOOL success))completion; 五 结果如下： 回调值 userActivity.webpageURL： "https://sub.domain.com/link/wxxxxxxx/refreshToken?wechat_auth_token=xxxx&wechat_auth_context_id=TestAutoCheckContextId_xxxxxx" Log 记录： " WXApi log: wxlog:set property list WXApi log: wxlog:send req[], appID:wxxxxxxxx, universalLink:https://sub.domain.com/link/, sdkVersion:1.8.7.1 WXApi log: wxlog:set property list WXApi log: wxlog:Error:fail to load Keychain status:-25300, keyData null:1 WXApi log: wxlog:token[(null)] is null WXApi log: wxlog:launch app with ul only success WXApi log: wxlog:Successfully starting WeChat with the universal link. WXApi log: wxlog:launch app with ul only success WXApi log: wxlog:launch app with universal link, ret:1 WXApi log: wxlog:req:, cid:xxxxxxxxxx WXApi.send isOk: true WXApi log: wxlog:WXCheckULStepResult[success: 1, errorInfo: Universal Link check passed. The application is launched by WeChat via Universal Link, suggestion: ] WXApi log: wxlog:WXCheckULStepResult[success: 1, errorInfo: All Check Passed!, suggestion: ] " 调用 + (void)checkUniversalLinkReady:(nonnull WXCheckULCompletion)completion; checkUniversalLinkReady: step 0, success true, errorInfo check passed, suggestion  checkUniversalLinkReady: step 1, success true, errorInfo check passed, suggestion  checkUniversalLinkReady: step 2, success true, errorInfo check passed, suggestion  WXApi log: wxlog:set property list checkUniversalLinkReady: step 3, success true, errorInfo check passed, suggestion  WXApi log: wxlog:send req[], appID:wx04155bc44c349cd2, universalLink:https://guardian.kid17.com/link/, sdkVersion:1.8.7.1 WXApi log: wxlog:set property list WXApi log: wxlog:Error:fail to load Keychain status:-25300, keyData null:1 WXApi log: wxlog:token[(null)] is null WXApi log: wxlog:launch app with ul only success checkUniversalLinkReady: step 4, success true, errorInfo check passed, suggestion  WXApi log: wxlog:Successfully starting WeChat with the universal link. WXApi log: wxlog:launch app with ul only success WXApi log: wxlog:launch app with universal link, ret:1 WXApi log: wxlog:req:, cid:xxxxxxxxxxxxxxxxxxxxx WXApi.send isOk: true 该如何解决呢？ 微信号：kid17-test 微信日志已上传，时间 2020-06-11 19:44