DropBox获取的共享链接未在ios目标c中找到

Question

我使用以下代码找到了Dropbox获取共享链接。 我使用此代码在ios 9中使用最新的api获取dropbox获取共享链接 但我的问题是那个

我的代码在obj c

DBUserClient *client = [DBClientsManager authorizedClient];
            // "Full Dropbox" or "/Apps/<APP_NAME>/" if app has permission "App Folder").

            [[client.sharingRoutes getSharedLinkMetadata:path]setResponseBlock:^(DBSHARINGSharedLinkMetadata * _Nullable result, DBSHARINGSharedLinkError * _Nullable routeError, DBRequestError * _Nullable networkError) {
                if (result) {
                    [self sendEmail:result.url];
                }
                else
                {

                    NSString *title = @"";
                    NSString *message = @"";
                    if (routeError) {
                        // Route-specific request error
                        title = @"Route-specific error";
                        if (routeError ) {
                            message = [NSString stringWithFormat:@"Invalid path: %@", routeError];

                        }

                    }
                    else
                    {
                        // Generic request error
                        title = @"Generic request error";
                        if ([networkError isInternalServerError]) {
                            DBRequestInternalServerError *internalServerError = [networkError asInternalServerError];
                            message = [NSString stringWithFormat:@"%@", internalServerError];

                        }
                        else if ([networkError isBadInputError])
                        {
                            DBRequestBadInputError *badInputError = [networkError asBadInputError];
                            message = [NSString stringWithFormat:@"%@", badInputError];

                        }
                        else if ([networkError isAuthError])
                        {
                            DBRequestAuthError *authError = [networkError asAuthError];
                            message = [NSString stringWithFormat:@"%@", authError];

                        }
                        else if ([networkError isRateLimitError])
                        {
                            DBRequestRateLimitError *rateLimitError = [networkError asRateLimitError];
                            message = [NSString stringWithFormat:@"%@", rateLimitError];

                        }
                        else if ([networkError isHttpError])
                        {
                            DBRequestHttpError *genericHttpError = [networkError asHttpError];
                            message = [NSString stringWithFormat:@"%@", genericHttpError];

                        } else if ([networkError isClientError])
                        {
                            DBRequestClientError *genericLocalError = [networkError asClientError];
                            message = [NSString stringWithFormat:@"%@", genericLocalError];

                        }


                    }

                    UIAlertController *alertController =

                    [UIAlertController alertControllerWithTitle:title
                                                        message:message preferredStyle:(UIAlertControllerStyle)UIAlertControllerStyleAlert];
                    [alertController addAction:[UIAlertAction actionWithTitle:@"OK"
                                                                        style:(UIAlertActionStyle)UIAlertActionStyleCancel
                                                                      handler:nil]];
                    [self presentViewController:alertController animated:YES completion:nil];

                    //[self setFinished];
                }
            }];

结果是 results image

但是我第一次创建链接然后得到它的make错误plz帮助我如何获得链接.... 请详细定义我.. 感谢