PFLogInViewController错误-使用Parse注销后无法登录到Facebook [英] PFLogInViewController error- unable to login to Facebook after logging out with Parse

问题描述

我正在使用PFLogInViewController登录到首次成功运行的Facebook-

I am using PFLogInViewController to login to facebook which works successfully the first time-

- (void)logInViewController:(PFLogInViewController *)controller
           didLogInUser:(PFUser *)user {
if([PFFacebookUtils isLinkedWithUser:user]){
    FBRequest *request = [FBRequest requestForMe];
    [request startWithCompletionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
        NSDictionary *userData = (NSDictionary *)result;

        NSString *facebookID = userData[@"id"];
        NSString *name = userData[@"name"];
        NSString *location = userData[@"location"][@"name"];
        NSString *gender = userData[@"gender"];
        NSString *birthday = userData[@"birthday"];
        NSString *relationship = userData[@"relationship_status"];

        [user setObject:userData[@"id"] forKey:@"fbId"];
        [user setObject:userData[@"name"] forKey:@"name"];
        [user setObject:userData[@"email"] forKey:@"email"];
        [user saveInBackground];
        NSURL *pictureURL = [NSURL URLWithString:[NSString stringWithFormat:@"https://graph.facebook.com/%@/picture?type=large&return_ssl_resources=1", facebookID]];
        NSURLRequest *urlRequest = [NSURLRequest requestWithURL:pictureURL];

        // Run network request asynchronously
        [NSURLConnection sendAsynchronousRequest:urlRequest
                                           queue:[NSOperationQueue mainQueue]
                               completionHandler:
         ^(NSURLResponse *response, NSData *data, NSError *connectionError) {
             if (connectionError == nil && data != nil) {
                 // Set the image in the header imageView
                 PFFile *profileImage=[PFFile fileWithData:data];
                 [user setObject:profileImage forKey:@"profileImage"];
                 [user saveInBackground];
             }
         }];

    }];
}

[self dismissViewControllerAnimated:YES completion:nil];

}

如果我随后调用[PFUser logOut]并再次打开PFLogInViewController，则当我点击Facebook图标再次登录时，facebook微调框将无限期旋转，并且出现错误尝试将objectId更改为已知的离线商店".

If I then call [PFUser logOut] and open the PFLogInViewController again, when I tap the facebook icon to log in again, the facebook spinner spins indefinitely and I get the error "Attempted to change an objectId to one that's already known to the OfflineStore."

如何注销当前用户，然后使用PFLogInViewController重新登录?

How do I log out of the current user and then login again using PFLogInViewController?

推荐答案

如果我从appDelegate中删除了[Parse enableLocalDatastore]，则不会再出现此错误.如果我不固定任何对象，禁用此功能是否有不利之处?如果没有网络连接，我还能使用"saveEventually"吗?

If I remove [Parse enableLocalDatastore] from the appDelegate, I no longer get this error. If I am not pinning any objects is there any disadvantage to disabling this? Will I still be able to use "saveEventually" if there is no network connection?

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