使用不同的帐户登录Parse和FB

Question

我正在为iOS实现Parse/Facebook登录，它运行得很好——我用自己的FB用户登录，一切都很好。

但现在我想从另一个FB用户（测试人员的帐户）登录我的iOS应用程序。这就是我所做的：

1. 在我的iPhone上转到我的FB应用程序，注销，然后用我的测试帐户再次登录。

2. 回到我的iOS/Parse应用程序，尝试使用Facebook登录。结果是我用自己的帐户登录了！

我卸载了该应用程序，并从xCode重新运行它，登录了Facebook，然后我又使用了自己的帐户。

无论我做什么，我都会回到自己的账户。看起来Parse或FB正在以某种方式缓存我的信息。如何取消缓存以重新开始？

这是我的登录方法：

- (void)loginWithFB  {
    NSArray *permissionsArray = @[ @"user_about_me", @"user_relationships", @"user_birthday", @"user_location"];
    // Login PFUser using facebook
    [PFFacebookUtils logInWithPermissions:permissionsArray block:^(PFUser *user, NSError *error) {
    [_activityIndicator stopAnimating]; // Hide loading indicator
    if (!user) {
        if (!error) {
            NSLog(@"Uh oh. The user cancelled the Facebook login.");
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Log In Error" message:@"Uh oh. The user cancelled the Facebook login." delegate:nil cancelButtonTitle:nil otherButtonTitles:@"Dismiss", nil];
            [alert show];
        } else {
            NSLog(@"Uh oh. An error occurred: %@", error);
            UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Log In Error" message:[error description] delegate:nil cancelButtonTitle:nil otherButtonTitles:@"Dismiss", nil];
            [alert show];
        }
    } else if (user.isNew) {
        NSLog(@"User with facebook signed up and logged in!");
        AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
        appDelegate.window.rootViewController = appDelegate.tabBarController;
        [appDelegate.tabBarController setSelectedIndex:3];
        [self.navigationController pushViewController:[[MyTrack alloc] init] animated:YES];
    } else {
        NSLog(@"User with facebook logged in!");
        FBRequest *request = [FBRequest requestForMe];
        [request startWithCompletionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
            if (!error) {
                NSString *facebookUsername = [result objectForKey:@"username"];
                [PFUser currentUser].username = facebookUsername;
                [[PFUser currentUser] saveEventually];
                NSLog(@"Welcome Screen I am %@", [[PFUser currentUser] username]);
            } else {
                NSLog(@"Error getting the FB username %@", [error description]);
            }
        }];

        AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
        appDelegate.window.rootViewController = appDelegate.tabBarController;
        [appDelegate.tabBarController setSelectedIndex:0];
    }
}];
    [_activityIndicator startAnimating]; // Show loading indicator until login is finished
}

Answer 1

请在退出时尝试此操作

[FBSession.activeSession close];
[FBSession.activeSession closeAndClearTokenInformation];
FBSession.activeSession = nil;