在 iOS 8 中无法从 Facebook 获取用户的电子邮件个人信息

Posted 2023-03-11

【中文标题】在 iOS 8 中无法从 Facebook 获取用户的电子邮件个人信息

【英文标题】：not Getting user's email Personal info from Facebook in iOS 8

【发布时间】：2015-09-09 06:24:58

【问题描述】：

在我的应用程序中，我必须实现 facebook 登录。基于我正在进行集成的 facebook 文档，但是当我获取用户信息时，电子邮件部分对我来说是空的。 有人可以告诉我问题出在哪里。 我正在使用此代码

FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init];
    //login.loginBehavior = FBSDKLoginBehaviorBrowser;
    [login logInWithReadPermissions:@[@"public_profile",@"email",@"user_friends"] handler:^(FBSDKLoginManagerLoginResult *result, NSError *error)
     
         if (error)
         
             // Process error
         
         else if (result.isCancelled)
         
             // Handle cancellations
         
         else
         
             if ([result.grantedPermissions containsObject:@"email"])
             
                 NSLog(@"result is:%@",result);

                 [login logOut]; // Only If you don't want to save the session for current app
             
         
     ];
    if ([FBSDKAccessToken currentAccessToken])
    
        NSLog(@"Token is available : %@",[[FBSDKAccessToken currentAccessToken]tokenString]);



        [[[FBSDKGraphRequest alloc] initWithGraphpath:@"me" parameters:nil]
         startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) 

             if (!error) 



                 NSLog(@"fetched user:%@  and Email : %@", result,result[@"email"]);
             
         ];
    

出去放这个

fetched user:
    id = 970029739773026393591;
    name = "jace";
  and Email : (null)
FBSDKLog: starting with Graph API v2.4, GET requests for /me should contain an explicit "fields" parameter

【参考方案1】：

Facebook已升级权限，请这样关注

改变这一行

 [[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:nil]

进入

[[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:@@"fields": @"id, name, link, first_name, last_name, picture.type(large), email, birthday, bio ,location , friends ,hometown , friendlists"]

其他reference

【讨论】：

@PRK -- 兄弟很多

【参考方案2】：

您必须传递参数email 才能通过 Facebook 获取 user_email：

///Add This line
NSMutableDictionary* parameters = [NSMutableDictionary dictionary];
                     [parameters setValue:@"id,name,email" forKey:@"fields"];

[[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:parameters] <--------- This line

startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) 
                          if (!error)
                          

                          

【参考方案3】：

你必须得到这样的用户电子邮件

FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init];
    [login logInWithReadPermissions:@[@"email", @"user_friends",@"user_birthday"] handler:^(FBSDKLoginManagerLoginResult *result, NSError *error)
         
             if (error)
             
                 // Process error
                 NSLog(@"error is :%@",error);
             
             else if (result.isCancelled)
             
                 // Handle cancellations
                 NSLog(@"error is :%@",error);
             
             else
             
                 if ([result.grantedPermissions containsObject:@"email"])
                 
                     NSLog(@"Login successfull");
                     [self fetchUserInfo];
                 
             
         ];
    

    -(void)fetchUserInfo
    
        if ([FBSDKAccessToken currentAccessToken])
        
            [[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:@@"fields": @"id,name,link,first_name, last_name, picture.type(large), email, birthday, bio ,location ,friends ,hometown , friendlists"]
             startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) 
                 if (!error)
                 
                  NSLog(@"result : %@",result);
                 
             ];