Parse.com和Facebook登录，运行无限循环 [英] Parse.com and Facebook login, runs infinite loop

问题描述

我将Parse和Facebook iOS SDK更新到最新版本，当我尝试使用Facebook登录我的应用程序崩溃时，从调试器中我可以看到它正在无限循环中调用3-4种方法。 p>

我的登录代码如下所示：

   - （void）openSession 
 {
 UIViewController * topViewController = self.window.rootViewController; 
 NSArray * permissions = [NSArray arrayWithObjects：@user_likes，@friends_likes，nil]; 
 
 //使用Facebook登录PFUser 
 [PFFacebookUtils logInWithPermissions：permissions block：^（PFUser * user，NSError * error）{
 if（！user）{
 if（！error）{
 NSLog（@呃哦，用户取消了Facebook登录。 
} else {
 NSLog（@呃哦发生错误：％@，错误）; 
} 
} else if（user.isNew）{
 NSLog（@用户注册并登录！）; 
 
 if（[[topViewController presentedViewController] isKindOfClass：[PALoginViewController class]]）{
 [topViewController dismissViewControllerAnimated：YES完成：nil]; 
} 
} else {
 NSLog（@用户已登录！）; 
 if（[[topViewController presentsViewController] isKindOfClass：[PALoginViewController class]]）{
 [topViewController dismissViewControllerAnimated：YES完成：nil]; 
} 
} 
}]; 
} 
  

当 logInWithPermissions 被调用。它崩溃到Xcode，调试器显示了很多调用FB登录方法 - 数千实际：

堆栈跟踪http://f.cl.ly/items/3z270O3L1s173Z3o0V3E/Screen% 20Shot％202013-04-20％20at％2010.25.51％20 AM.png

可能是什么错误？

解决方案

这个问题在Facebook上被报告为一个错误： https://developers.facebook.com/bugs/188127071335876?browse=search_5176d24c698df3761093726

现在已经修复了，我可以确认登录现在可以工作 - 即使启用了沙箱。

I updated both Parse and Facebook iOS SDKs to the latest versions, and when I try to login using Facebook my app crashes, and from the debugger I can see that it is calling 3-4 methods in an endless loop.

My login code looks like this:

- (void)openSession
{
    UIViewController *topViewController = self.window.rootViewController;
    NSArray *permissions = [NSArray arrayWithObjects:@"user_likes", @"friends_likes", nil];

    // Login PFUser using Facebook
    [PFFacebookUtils logInWithPermissions:permissions block:^(PFUser *user, NSError *error) {
        if (!user) {
            if (!error) {
                NSLog(@"Uh oh. The user cancelled the Facebook login.");
            } else {
                NSLog(@"Uh oh. An error occurred: %@", error);
            }
        } else if (user.isNew) {
            NSLog(@"User with facebook signed up and logged in!");

            if ([[topViewController presentedViewController] isKindOfClass:[PALoginViewController class]]) {
                [topViewController dismissViewControllerAnimated:YES completion:nil];
            }
        } else {
            NSLog(@"User with facebook logged in!");
            if ([[topViewController presentedViewController] isKindOfClass:[PALoginViewController class]]) {
                [topViewController dismissViewControllerAnimated:YES completion:nil];
            }
        }
    }];
}

The error occurs when logInWithPermissions is called. It crashes into Xcode and Debugger is showing an awful lot of calls to FB login methods - thousands actually:

Stack trace http://f.cl.ly/items/3z270O3L1s173Z3o0V3E/Screen%20Shot%202013-04-20%20at%2010.25.51%20AM.png

What could be wrong?

解决方案

This issue was reported as a bug on Facebook: https://developers.facebook.com/bugs/188127071335876?browse=search_5176d24c698df3761093726

It has now been fixed, and I can confirm that logging in now works - even with Sandbox enabled.

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