如何从 iOS 中的 Facebook SDK 获取用户信息？

Posted 2023-03-16

【中文标题】如何从 iOS 中的 Facebook SDK 获取用户信息？

【英文标题】：How to get user info from Facebook SDK in iOS?

【发布时间】：2014-03-01 08:22:28

【问题描述】：

如何在用户会话打开时获取用户名。我尝试了 Facebook sdk 示例中的会话登录示例。如果有人知道解决方案，请帮助我。 提前致谢。

 - (IBAction)buttonClickHandler:(id)sender 
        // get the app delegate so that we can access the session property
        SLAppDelegate *appDelegate = [[UIApplication sharedApplication]delegate];

        // this button's job is to flip-flop the session from open to closed
        if (appDelegate.session.isOpen) 
            // if a user logs out explicitly, we delete any cached token information, and next
            // time they run the applicaiton they will be presented with log in UX again; most
            // users will simply close the app or switch away, without logging out; this will
            // cause the implicit cached-token login to occur on next launch of the application
   //hear i need to fetch user name ?


            [appDelegate.session closeAndClearTokenInformation];

         else 
            if (appDelegate.session.state != FBSessionStateCreated) 
                // Create a new, logged out session.
                appDelegate.session = [[FBSession alloc] init];
            

            // if the session isn't open, let's open it now and present the login UX to the user
            [appDelegate.session openWithCompletionHandler:^(FBSession *session,
                                                             FBSessionState status,
                                                             NSError *error) 
                // and here we make sure to update our UX according to the new session state
                [self updateView];
            ];
        
    

【问题讨论】：

developers.facebook.com/docs/ios/graph

【参考方案1】：

登录验证后，您可以从活动的 FBSession 中获取详细信息，如下所示

if (FBSession.activeSession.isOpen) 

    [[FBRequest requestForMe] startWithCompletionHandler:
     ^(FBRequestConnection *connection,
       NSDictionary<FBGraphUser> *user,
       NSError *error) 
         if (!error) 
             NSString *firstName = user.first_name;
             NSString *lastName = user.last_name;
             NSString *facebookId = user.id;
             NSString *email = [user objectForKey:@"email"];
             NSString *imageUrl = [[NSString alloc] initWithFormat: @"http://graph.facebook.com/%@/picture?type=large", facebookId];
         
     ];

更新：在 v3.14.1（2014 年 5 月 12 日）发布后，id 属性已被弃用，而不是 id 使用 objectID 属性

NSString *facebookId = user.objectID;

【讨论】：

@PeerMohamedThabib 你得到了什么错误？你有回电吗？

你说的 fbfetchRequest 是什么意思？

工作得很好，谢谢

最新的 Facebook SDK 建议使用 user.objectID 而不是 user.id（'id' 已被弃用，我想是为了避免与 Objective-c id 对象冲突）

@Pravin 我没有检查最新的 sdk。如果您知道 sdk 的确切版本，请随时更新我的​​答案。

【参考方案2】：

您好，您可以获取 Facebook 用户的详细信息，例如：

- (void)sessionStateChanged:(NSNotification*)notification 
    if ([[FBSession activeSession] isOpen]) 
        [FBRequestConnection
         startForMeWithCompletionHandler:^(FBRequestConnection *connection,
                                           id<FBGraphUser> user,
                                           NSError *error) 
             if (! error) 

                //details of user
                NSLog(@"User details =%@",user);
             
         ];
    else 
        [[FBSession activeSession] closeAndClearTokenInformation];
    

谢谢

【参考方案3】：

if (!error && state == FBSessionStateOpen)
    NSLog(@"Session opened");
    // Show the user the logged-in UI
     FBRequest* userupdate = [FBRequest requestWithGraphpath:@"me" parameters: [NSMutableDictionary dictionaryWithObject:@"picture.type(large),id,birthday,email,gender,username,name,first_name" forKey:@"fields"] HTTPMethod:@"GET"];
    [drk showWithMessage:nil];
    [userupdate startWithCompletionHandler: ^(FBRequestConnection *connection,
                                          NSDictionary* result,NSError *error)
   
    NSLog(@"dict = %@",result);
   ];
    return;

【参考方案4】：

        FBSDKGraphRequest(graphPath: "me", parameters: nil).startWithCompletionHandler( (connection, object, error) in
            guard let user = object as? Dictionary<String, NSObject> else 
                alert("facebook sdk gave me trash object \(object)")
                return
            
            if let error = error 
                alert(error.localizedDescription)
            
            else 
                if let userID = user["id"] 
                   // gr8t success

                

            
        )

【参考方案5】：

-(void)loginViewFetchedUserInfo:(FBLoginView *)loginView user:(id<FBGraphUser>)user 
  
    
    NSLog(@"user facebook details:%@",user.objectID);
    
   

你可以实现这个委托方法。