Facebook SDK + iPhone SDK +单点登录

Question

我知道这个问题已经被问过了，但是我已经一整天都在阅读帖子，我已经应用了我能找到的所有修复程序，但仍然有问题。

我正在尝试实现Facebook SDK的新单点登录功能，以允许我的应用程序使用Facebook的应用程序而不是webView进行身份验证。当我的应用程序切换到Facebook的应用程序时，它显示正在加载几秒钟，然后切换回来，但令牌仍然为空。我有一种感觉，这与我的应用程序的URL方案有关，但我遵循了许多教程，并且相当有信心，我目前的plist值是正确的：

​

下面是我在appDelegate和viewController文件中实现的代码: appDelegate.h

Facebook *facebook;

appDelegate.m

// Pre 4.2 support
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
    return [facebook handleOpenURL:url]; 
}

// For 4.2+ support
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url
  sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
    return [facebook handleOpenURL:url]; 
}

SecondViewController.m

-(IBAction) fbButton {
    //FACEBOOK INTEGRATION
    appDelegate.facebook = [[Facebook alloc] initWithAppId:@"222087841143437" andDelegate:appDelegate];

    // Check and retrieve authorization information
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    if ([defaults objectForKey:@"FBAccessTokenKey"] 
        && [defaults objectForKey:@"FBExpirationDateKey"]) {
        appDelegate.facebook.accessToken = [defaults objectForKey:@"FBAccessTokenKey"];
        appDelegate.facebook.expirationDate = [defaults objectForKey:@"FBExpirationDateKey"];
    }
    if (![appDelegate.facebook isSessionValid]) {
        appDelegate.facebook.sessionDelegate = self;
        [appDelegate.facebook authorize:permissions];
        NSLog(@"Token: %@", [defaults objectForKey:@"FBAccessTokenKey"]);
    } else {
        NSLog(@"Already logged in!");

    }
    [appDelegate.facebook requestWithGraphPath:@"me" andDelegate:self];

}


- (void)request:(FBRequest *)request didLoad:(id)result {
    NSString *nameID = [[NSString alloc] initWithFormat:@"%@ (%@)", [result objectForKey:@"name"], [result objectForKey:@"id"]];
    NSMutableArray *userData = [[NSMutableArray alloc] initWithObjects:
                                [NSDictionary dictionaryWithObjectsAndKeys:
                                 [result objectForKey:@"id"], @"id", 
                                 nameID, @"name", 
                                 [result objectForKey:@"picture"], @"details", 
                                 nil], nil];

    [userData release];
    [nameID release];
    NSLog(@"DATA RECEIVED: %@", result);
}

- (void)request:(FBRequest *)request didReceiveResponse:(NSURLResponse *)response {
    NSLog(@"request:didReceiveResponse:");
}

- (void)request:(FBRequest *)request didFailWithError:(NSError *)error {
    NSLog(@"%@", [error localizedDescription]);
    NSLog(@"Err details: %@", [error description]);
};
- (void)fbDidLogin {
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setObject:[[appDelegate facebook] accessToken] forKey:@"FBAccessTokenKey"];
    [defaults setObject:[[appDelegate facebook] expirationDate] forKey:@"FBExpirationDateKey"];
    [defaults synchronize];
    NSLog(@"Facebook Logged in!");

    [appDelegate.facebook requestWithGraphPath:@"me" andDelegate:self];


}

我知道我两次调用appDelegate.facebook的requestWithGraphPath:@"me“和andDelegate:self，但我不认为这是问题所在。

当我按下登录按钮时，下面是控制台中的一段代码：

2011-10-18 15:37:33.287 Track[2235:707] Token: (null)
2011-10-18 15:37:36.578 Track[2235:707] request:didReceiveResponse:
2011-10-18 15:37:36.584 Track[2235:707] The operation couldn’t be completed. (facebookErrDomain error 10000.)
2011-10-18 15:37:36.586 Track[2235:707] Err details: Error Domain=facebookErrDomain Code=10000 "The operation couldn’t be completed. (facebookErrDomain error 10000.)" UserInfo=0x1ce480 {error=<CFBasicHash 0x1c9560 [0x3e368630]>{type = mutable dict, count = 2,
entries =>
    2 : <CFString 0x19a830 [0x3e368630]>{contents = "type"} = <CFString 0x11d230 [0x3e368630]>{contents = "OAuthException"}
    3 : <CFString 0x1f5b60 [0x3e368630]>{contents = "message"} = <CFString 0x1f8a70 [0x3e368630]>{contents = "An active access token must be used to query information about the current user."}

我很感谢你的帮助，我真的希望我不会错过这里解决这个问题的讨论。下面是我通读过但没有成功找到解决方案的几个

How to implement Single Sign On (SSO) using facebook ios sdk for iphone Facebook SSO and request iOS SDK Facebook API for iPhone Error: An active access token must be used

Answer 1

确保您的Facebook应用程序(您在Facebook上创建的实际应用程序)未处于沙箱模式，如果处于沙箱模式，请确保您的Facebook应用程序( iPhone Facebook客户端)当前登录的用户是该应用程序的开发人员。