Question

我正在尝试在登录后从Facebook获取用户名，电子邮件和图片。登录和权限工作正常。

我尝试使用：

FBSession

但我正在试图实施"user of undeclared FBSession"：

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];
     }
 }];}

在此处找到：How to get user info from Facebook SDK in iOS?

任何想法我怎么能做到这一点？或者为什么我对Facebook元素不公开？

Answer 1

如果您使用的是新的facebook sdk和新的图表api，则必须使用访问令牌

if ([FBSDKAccessToken currentAccessToken]) {


    [[[FBSDKGraphRequest alloc] initWithGraphPath:@"me" parameters:@{@"fields": @"picture,email,birthday,gender,name"}] startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id res, NSError *error)
     {
         if (!error) {



             FBID = [res objectForKey:@"id"];
             FBDOB = [res objectForKey:@"birthday"];
             FBEMAIL = [res objectForKey:@"email"];
             FBGENDER = [res objectForKey:@"gender"];
             FBUSERNAME = [res objectForKey:@"name"];


         }
         else
         {
             NSLog(@"%@", [error localizedDescription]);
         }}];
}

查看从facebook获取数据的链接 https://developers.facebook.com/docs/ios/graph

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