XCode 11.2，模擬器 iOS 11 崩潰並出現錯誤“dyld：惰性符號綁定失敗：找不到符號……”

Question

使用 AWSAppSync ios sdk，嘗試配置 AWSAppSyncClient，模擬器在嘗試創建 Reachability 實例時崩潰（嘗試獲取 UserPoolsAuthProvider 時）：

        let appSyncConfig = try AWSAppSyncClientConfiguration(appSyncServiceConfig: AWSAppSyncServiceConfig(),
                                                              userPoolsAuthProvider: {
                                                              class MyCognitoUserPoolsAuthProvider : AWSCognitoUserPoolsAuthProviderAsync {
                                                                  func getLatestAuthToken(_ callback: @escaping (String?, Error?) -> Void) {
                                                                      AWSMobileClient.default().getTokens { (tokens, error) in
                                                                          if error != nil {
                                                                              callback(nil, error)
                                                                          } else {
                                                                              callback(tokens?.idToken?.tokenString, nil)
                                                                          }
                                                                      }
                                                                  }
                                                              }
                                                              return MyCognitoUserPoolsAuthProvider()}(),
                                                              cacheConfiguration: cacheConfiguration)

以下是完整的錯誤消息：

dyld：惰性符號綁定失敗：找不到符號：_$sSo18NSNotificationNamea12ReachabilityE19reachabilityChangedABvau 引用自：/Users/user/Library/Developer/CoreSimulator/Devices/5BD6D58E-C91E-4737-AD3B-547E9D77770B/data/Containers/Bundle/Application/F8307EF9- 70B5-4834-BFC4-D340DCF4D3DD/nano-staging.app/Frameworks/AWSAppSync.framework/AWSAppSync 預期在：/Users/user/Library/Developer/CoreSimulator/Devices/5BD6D58E-C91E-4737-AD3B-547E9D77770B/data/Containers /Bundle/Application/F8307EF9-70B5-4834-BFC4-D340DCF4D3DD/nano-staging.app/Frameworks/Reachability.framework/Reachability

使用 aws-mobile-appsync-sdk-ios v3.1.11 和 Reachability v5.1.0，將不勝感激任何幫助！

Answer 1

您可以嘗試將 xcode 中的“Reachability.framework”添加到帶有“可選”標志的“Link Binary With Libraries”