Facebook Ios sdk登录

Question

我正在尝试创建一个函数与iOS facebook sdk，我将能够登录，如果我登录，我将能够看到nslog字符串“已登录”。然而，我根本看不到它的字符串。此外，在按下按钮、查看我的Facebook应用程序和按下ok继续操作方面，登录似乎工作得很好。有人能告诉我我哪里做错了吗？

   -(IBAction)popButton:(id)sender {

   TUAppDelegate *appDelegate = (TUAppDelegate *)[[UIApplication sharedApplication] delegate];

// this button's job is to flip-flop the session from open to closed
if (appDelegate.session.isOpen) {
    // if a user logs out explicitly, we delete any cached token information, and next
    // time they run the applicaiton they will be presented with log in UX again; most
    // users will simply close the app or switch away, without logging out; this will
    // cause the implicit cached-token login to occur on next launch of the application
    [appDelegate.session closeAndClearTokenInformation];

} else {
    if (appDelegate.session.state != FBSessionStateCreated) {
        // Create a new, logged out session.
        appDelegate.session = [[FBSession alloc] init];
    }

    // if the session isn't open, let's open it now and present the login UX to the user
    [appDelegate.session openWithCompletionHandler:^(FBSession *session,
                                                     FBSessionState status,
                                                     NSError *error) {
        // and here we make sure to update our UX according to the new session state
        [self updateView];
    }];
}
  }
- (void)updateView{
// get the app delegate, so that we can reference the session property
  TUAppDelegate *appDelegate = (TUAppDelegate *)[[UIApplication sharedApplication] delegate];
if (appDelegate.session.isOpen) {
    NSLog(@"Logged In");

} else {
    NSLog(@"Not Logged In");
}
}

Answer 1

我怀疑您至少错过了步骤2d，将openURL连接回Facebook SDK：

https://developers.facebook.com/docs/tutorials/ios-sdk-tutorial/authenticate/

..。也就是说，你很容易错过更多。如果你在登录后再次看到你的应用程序，那么我怀疑你已经将网址方案添加到了你的Info.plist中，否则也要检查一下。