获取ACAccount Facebook用户全名为空

Question

我正在尝试获取用户Facebook帐户的全名，应用程序已经在Facebook的iPhone设置中设置了权限，前几天这段代码可以工作，但know不能，我不明白为什么，代码是这样的：

ACAccountStore *accountStore = [[ACAccountStore alloc] init];

__block ACAccount *facebookAccount;

ACAccountType *facebookTypeAccount = [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierFacebook];

NSDictionary *options = @{ACFacebookAppIdKey:@"mycode",ACFacebookPermissionsKey: @[@"email"]};

[accountStore requestAccessToAccountsWithType:facebookTypeAccount
                                      options:options
                                   completion:^(BOOL granted, NSError *error) {
                                       if(granted){
                                           NSArray *accounts = [accountStore accountsWithAccountType:facebookTypeAccount];
                                           facebookAccount = [accounts lastObject];
                                           NSLog(@"name: %@",[facebookAccount userFullName]);
                                           dispatch_async(dispatch_get_main_queue(), ^{
                                               [self.fb_name setText:[facebookAccount userFullName]];
                                           });

                                       }
                                   }];

这个：NSLog(@"name: %@",[facebookAccount userFullName]);是null

Answer 1

我相信userFullName只有在iOS 7之后才能使用。也许你是在iOS 7上测试的，现在你在使用iOS 6时遇到了这个问题。有关iOS 6的后备问题，请参阅iOS: user's full name for an ACAccountTypeIdentifierFacebook。