Facebook SDK 3.0：如何接收用户的电子邮件？

在“旧”FB iOS SDK中，我可以通过以下方式接收用户信息：

NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys: @"SELECT uid, name, email, pic FROM user WHERE uid=me()", @"query", nil]; JBFacebookManager *fbManager = [JBFacebookManager getInstance]; fbManager.requestDelegate = self; [fbManager.facebook requestWithMethodName:@"fql.query" andParams:params andHttpMethod:@"POST" andDelegate:self]; 

我如何用新的FB iOS SDK 3.0来做到这一点？ 我是否需要使用FBRequest或FBOpenGraphAction或FBGraphObject或这些或完全不同的组合？

Answer 1

 if (FBSession.activeSession.isOpen) { [[FBRequest requestForMe] startWithCompletionHandler:^(FBRequestConnection *connection, NSDictionary<FBGraphUser> *user, NSError *error) { if (!error) { self.nameLabel.text = user.name; self.emailLabel.text = [user objectForKey:@"email"]; } }]; } 

由于FBGraphUser没有电子邮件FBGraphUser ，我们不能像名称（dot-syntax）那样访问信息，但NSDictionary仍然有电子邮件kv-pair，我们可以像访问正常的NSDictionary。

不要忘记要求电子邮件的许可，但：

 NSArray *permissions = [[NSArray alloc] initWithObjects:@"email", nil]; [FBSession sessionOpenWithPermissions:permissions completionHandler: ^(FBSession *session, FBSessionState state, NSError *error) { [self facebookSessionStateChanged:session state:state error:error]; }]; 

Answer 2

一旦访问(id<FBGraphUser>)user ，您可以简单地使用user[@"email"] 。

Answer 3

从这里我们可以得到Facebook用户的基本信息和电子邮件ID。

 [FBSession openActiveSessionWithReadPermissions:@[@"basic_info",@"email"] allowLoginUI:YES completionHandler:^(FBSession *session,FBSessionState status,NSError *error){ if(error) { NSLog(@"Facebook Error : %@",error.localizedDescription); } else{ } // Respond to session state changes, // ex: updating the view }]; 

Answer 4

你读过3.0 SDK的源代码吗？ 有一种我认为是相同的方法：

 - (FBRequest*)requestWithMethodName:(NSString *)methodName andParams:(NSMutableDictionary *)params andHttpMethod:(NSString *)httpMethod andDelegate:(id <FBRequestDelegate>)delegate; 

Answer 5

login后获取信息的最简单的方法是：

 -(IBAction)loginWithFacebook:(id)sender{ FBSDKLoginManager *login = [[FBSDKLoginManager alloc] init]; [login logInWithReadPermissions: @[@"public_profile",@"email"] fromViewController:self handler:^(FBSDKLoginManagerLoginResult *result, NSError *error) { if (error) { NSLog(@"Process error"); } else if (result.isCancelled) { NSLog(@"Cancelled"); } else { NSLog(@"Logged in"); [self getFacebookProfileInfos]; } }]; } -(void)getFacebookProfileInfos { NSDictionary *parameters = @ {@"fields": @"id, name, first_name, last_name, picture.type(large), email"}; if ([FBSDKAccessToken currentAccessToken]) { [[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:parameters] startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id result, NSError *error) { if (!error) { NSLog(@"fetched user:%@", result); } }]; } 

}

你会得到所有的信息结果。