在iOS iOS中使用会话处理取消按钮 [英] Handle cancel button in facebook iOS using session

问题描述

  [FBSession setActiveSession：[[FBSession alloc] initWithPermissions ：[NSArray arrayWithObjects：@publish_actions，read_stream，user_hometown，user_birthday，email，nil]]]; 
 
 [[FBSession activeSession] openWithBehavior：FBSessionLoginBehaviorForcingWebView completionHandler：
 ^（FBSession * session，FBSessionState状态，NSError *错误）
 {
 if（state == FBSessionStateOpen ）
 {
 //使用用户的详细信息并在Facebook上发布
} 
}]; 
  

现在这对我来说很好。但是如果用户在登录Facebook之前按下关闭/取消按钮怎么办？如果用户按下取消按钮，我需要执行一组语句。我该怎么做
任何帮助将不胜感激。

解决方案

尝试这个

  [FBSession setActiveSession：[[FBSession alloc] initWithPermissions：[NSArray arrayWithObjects：@publish_actions，read_stream ，user_hometown，user_birthday，email，nil]]]; 
 
 [[FBSession activeSession] openWithBehavior：FBSessionLoginBehaviorForcingWebView completionHandler：
 ^（FBSession * session，FBSessionState状态，NSError *错误）
 {
 if（state == FBSessionStateOpen ）
 {
 //使用用户的细节并在Facebook上发布
} 
 else if（state == FBSessionStateClosed）
 {
 //如果用户不认证
} 
 else if（steate == FBSessionStateClosedLoginFailed）
 {
 
} 
 
}]; 
  

I tried to search this but couldn't find anything useful.

[FBSession setActiveSession:[[FBSession alloc] initWithPermissions:[NSArray arrayWithObjects:@"publish_actions,read_stream,user_hometown,user_birthday,email", nil]]];

    [[FBSession activeSession] openWithBehavior:FBSessionLoginBehaviorForcingWebView completionHandler:
    ^(FBSession *session,FBSessionState state,NSError *error)
    {
        if(state == FBSessionStateOpen)
       {
             // use user's detail and post on Facebook
       }
    }];

Now this works fine for me. But what if user presses close/cancel button before logging into Facebook. I need to execute set of statements if user pressed cancel button. How can i do this. Any help would be appreciated.

解决方案

try this

 [FBSession setActiveSession:[[FBSession alloc] initWithPermissions:[NSArray arrayWithObjects:@"publish_actions,read_stream,user_hometown,user_birthday,email", nil]]];

[[FBSession activeSession] openWithBehavior:FBSessionLoginBehaviorForcingWebView completionHandler:
^(FBSession *session,FBSessionState state,NSError *error)
{
    if(state == FBSessionStateOpen)
   {
         // use user's detail and post on Facebook
   }
   else if(state == FBSessionStateClosed)
  {
       // if user not authenticated
   }
   else if(steate == FBSessionStateClosedLoginFailed)
  {

  }

}];

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