如何在iOS中获取Facebook用户朋友的电子邮件ID

Question

我在我的应用程序中使用facebook graph api。 我想在我的应用程序fb图用户的表视图中获取fb朋友的电子邮件ID，但该用户未提供电子邮件的任何属性。 我怎样才能对我有帮助-（void）loginViewShowingLoggedInUser：（FBLoginView *）loginView {self.userInfoTextView.hidden = NO;

// Fetch user data
[FBRequestConnection
 startForMeWithCompletionHandler:^(FBRequestConnection *connection,
                                   id<FBGraphUser> user,
                                   NSError *error) {
     if (!error) {
         NSString *userInfo = @"";

         // Example: typed access (name)
         // - no special permissions required
         userInfo = [userInfo
                     stringByAppendingString:
                     [NSString stringWithFormat:@"Name: %@\n\n",
                      user.name]];

         // Example: typed access, (birthday)
         // - requires user_birthday permission
         userInfo = [userInfo
                     stringByAppendingString:
                     [NSString stringWithFormat:@"Birthday: %@\n\n",
                      user.birthday]];

         // Example: partially typed access, to location field,
         // name key (location)
         // - requires user_location permission
         userInfo = [userInfo
                     stringByAppendingString:
                     [NSString stringWithFormat:@"Location: %@\n\n",
                      user.location[@"name"]]];



         // Example: access via key (locale)
         // - no special permissions required
         userInfo = [userInfo
                     stringByAppendingString:
                     [NSString stringWithFormat:@"Locale: %@\n\n",
                      user[@"locale"]]];


         // Example: access via key for array (languages)
         // - requires user_likes permission
         if (user[@"languages"]) {
             NSArray *languages = user[@"languages"];
             NSMutableArray *languageNames = [[NSMutableArray alloc] init];
             for (int i = 0; i < [languages count]; i++) {
                 languageNames[i] = languages[i][@"name"];
             }
             userInfo = [userInfo
                         stringByAppendingString:
                         [NSString stringWithFormat:@"Languages: %@\n\n",
                          languageNames]];
         }
                      // Display the user info
         self.userInfoTextView.text = userInfo;
     }
 }];

}

Answer 1

您无法通过Facebook API获得朋友的电子邮件地址（有充分的理由-防止垃圾邮件）。 您可以获取当前用户的电子邮件地址，但只能获得扩展许可（ 有关更多信息，请参见此处 ）。

Answer 2

将此行添加到您的代码。 希望对您有帮助。

NSLog(@"%@",[user objectForKey:@"email"]);