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我的要求是在某些条件下通过代码关闭 Facebook 窗口。我正在使用Facebook iOS SDK 3.5.1。

有什么方法可以在运行的应用程序上显示（Facebook）屏幕或以编程方式关闭 Facebook 屏幕？

我在 2 种情况下使用 facebook-

  1. 用于登录
  2. 用于发送应用请求。

两者的代码如下 -

1.登录：

AppDelegate *appDelegate = (AppDelegate*)[UIApplication sharedApplication].delegate;
if (appDelegate.session.state != FBSessionStateCreated || !appDelegate.session.isOpen) {
    // Create a new, logged out session.
    NSArray *permissions = [NSArray arrayWithObjects:@"publish_stream",@"user_birthday",@"user_photos", @"email", @"user_location", @"user_hometown", nil];
    appDelegate.session = [[FBSession alloc] initWithPermissions:permissions];
}

[appDelegate.session openWithCompletionHandler:^(FBSession *session,
                                                 FBSessionState status,
                                                 NSError *error) {
    if (appDelegate.session.state!=258 && appDelegate.session.state!=257) {
        [self accessTokenFound:appDelegate.session.accessToken];
    }
}];

2.对于应用请求

NSMutableDictionary* params = [NSMutableDictionary dictionary];
AppDelegate* appDelegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
[params setObject:friendID forKey:@"to"];

// Display the requests dialog
[FBWebDialogs
 presentRequestsDialogModallyWithSession:appDelegate.session
 message:message
 title:nil
 parameters:params
 handler:^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
     if (error) {
         NSLog(@"Error sending request.");
     } else {
         if (result == FBWebDialogResultDialogNotCompleted) {
             NSLog(@"User canceled request.");
         } else {
             NSDictionary *urlParams = [self parseURLParams:[resultURL query]];
             if (![urlParams valueForKey:@"request"]) {
                 NSLog(@"User canceled request.");
             } else {
                 NSString *requestID = [urlParams valueForKey:@"request"];
                 [self requestSentSuccessfully];
             }
         }
     }
 }];
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