ios - FBSession : an attempt was made reauthorize permissions on an unopened session

我正在关注这个tutorial
在Facebook SDK 3.1上实现 View 预览文章，但是当我调用此方法时
...

// Ask for publish_actions permissions in context
    if ([FBSession.activeSession.permissions
         indexOfObject:@"publish_actions"] == NSNotFound) {
        // No permissions found in session, ask for it
        [FBSession.activeSession
         reauthorizeWithPublishPermissions:
         [NSArray arrayWithObject:@"publish_actions"]
         defaultAudience:FBSessionDefaultAudienceFriends
         completionHandler:^(FBSession *session, NSError *error) {
             if (!error) {
                 // If permissions granted, publish the story
                 [self publishStory];
             }
         }];
    } else {
        // If permissions present, publish the story
        [self publishStory];
    }

...

返回以下错误:



会发生什么事？谢谢!

编辑:
跑了我的 friend ，非常感谢，但是仍然有一个细节...当第一次发帖时，他要求授权应用程序时，我授权了这个秋天

/*
*在具有发布权限的情况下打开一个新 session
*/

  [FBSession openActiveSessionWithPublishPermissions:[NSArray arrayWithObject:@"publish_actions"]
                                   defaultAudience:FBSessionDefaultAudienceOnlyMe
                                      allowLoginUI:YES
                                 completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
                                     if (!error && status == FBSessionStateOpen) {
                                         [self publishStory];
                                     }else{
                                         NSLog(@"error");
                                        //Here I get the error mentioned below
                                     }
                                 }];
}

错误:错误:

最佳答案

该错误表明未打开FBSession。因此，您应在尝试重新授权之前检查 session 是否已打开。

if ([[FBSession activeSession] isOpen]) {
  /*
   * if the current session has no publish permission we need to reauthorize
   */
  if ([[[FBSession activeSession] permissions]indexOfObject:@"publish_actions"] == NSNotFound) {

        [[FBSession activeSession] requestNewPublishPermissions:[NSArray arrayWithObject:@"publish_actions"] defaultAudience:FBSessionDefaultAudienceFriends
                                              completionHandler:^(FBSession *session,NSError *error){
                                                  [self postPhoto];
                                              }];

    }else{
        [self publishStory];
    }
}else{
    /*
     * open a new session with publish permission
     */
    [FBSession openActiveSessionWithPublishPermissions:[NSArray arrayWithObject:@"publish_actions"]
                                       defaultAudience:FBSessionDefaultAudienceOnlyMe
                                          allowLoginUI:YES
                                     completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
                                         if (!error && status == FBSessionStateOpen) {
                                             [self publishStory];
                                         }else{
                                             NSLog(@"error");
                                         }
                                     }];
}

确保一致请求相同的权限，即 publish_actions (请注意复数)。

关于ios - FBSession : an attempt was made reauthorize permissions on an unopened session，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/14695312/