facebook - Parse.com Facebook 登录停留在 "Loading"iOS

Question

我正在使用 Parse 和 LogInViewController。我在登录 View 中添加了 Facebook。

当有人想连接 Facebook 时，它会打开浏览器，用户接受应用程序，然后返回应用程序。但当他返回应用程序时，他仍处于“加载”状态，但什么也没有发生。

但是，如果用户重新启动应用程序，它就可以工作。

只有当它是用户的第一个连接时我才会遇到这个问题。

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];

    if (![PFUser currentUser]) {        
        // Customize the Log In View Controller
        PFLogInViewController *logInViewController = [[PFLogInViewController alloc] init];
        [logInViewController setDelegate:self];
        [logInViewController setFacebookPermissions:[NSArray arrayWithObjects:@"friends_about_me", nil]];
        [logInViewController setFields:  PFLogInFieldsFacebook | PFLogInFieldsDismissButton];

        // Present Log In View Controller
        [self presentViewController:logInViewController animated:YES completion:NULL];
    }
}

我认为问题不在我的代码中，因为我使用的是 Parse 的默认代码，但我不确定。

Answer 1

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
    return [FBAppCall handleOpenURL:url
                  sourceApplication:sourceApplication
                        withSession:[PFFacebookUtils session]];
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    /*
     Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
     */
    [FBAppCall handleDidBecomeActiveWithSession:[PFFacebookUtils session]];
}

- (void)applicationWillTerminate:(UIApplication *)application {
    /*
     Called when the application is about to terminate.
     Save data if appropriate.
     See also applicationDidEnterBackground:.
     */
    [[PFFacebookUtils session] close];
}