xcode iOS：Facebook 登录访问令牌错误：由于模拟器错误，退回到从 NSUserDefaults 加载访问令牌
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/41047345/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
iOS: Facebook Login access token error: Falling back to loading access token from NSUserDefaults because of simulator bug
提问by SabCo
After configuring it based on the instructions I keep on getting this error and I am unable to successfully use Facebook Login on my app. I am running it on XCode 8.1 and using an iOS 10.1 simulator.
根据说明对其进行配置后，我不断收到此错误，并且无法在我的应用程序上成功使用 Facebook 登录。我在 XCode 8.1 上运行它并使用 iOS 10.1 模拟器。
I followed the steps on the Facebook iOS SDK guide and put the Facebook login button in my view controller. I displayed the NSUserdefaults and one of the keys is "com.facebook.sdk:serverConfiguration" so I believe it is saving there.
我按照 Facebook iOS SDK 指南中的步骤操作，并将 Facebook 登录按钮放在我的视图控制器中。我显示了 NSUserdefaults，其中一个键是“com.facebook.sdk:serverConfiguration”，所以我相信它保存在那里。
- (void)viewDidLoad {
[super viewDidLoad];
if ([FBSDKAccessToken currentAccessToken]) {
// User is logged in, do work such as go to next view controller.
NSLog(@"test");
}
else {
FBSDKLoginButton *loginButton = [[FBSDKLoginButton alloc] init];
loginButton.center = self.view.center;
[self.view addSubview:loginButton];
}
_loginButton.readPermissions =
@[@"public_profile", @"email", @"user_friends"];
NSLog(@"%@", [[NSUserDefaults standardUserDefaults] dictionaryRepresentation]);
}
回答by Jorn van Dijk
If the problem is that the iOS Simulator is signed out after a restart of the app, this is caused by a bug in the Facebook SDK. It prevents the simulator from caching the access token.
如果问题是在重新启动应用程序后退出 iOS 模拟器，则这是由 Facebook SDK 中的错误引起的。它可以防止模拟器缓存访问令牌。
You can fix this by adding the following line:
您可以通过添加以下行来解决此问题：
key = [NSString stringWithFormat:@"%@_fix", key];
key = [NSString stringWithFormat:@"%@_fix", key];
in FBSDKKeychainStore.m:94and FBSDKKeychainStore.m:135just before:
在FBSDKKeychainStore.m:94和FBSDKKeychainStore.m:135之前：
[[NSUserDefaults standardUserDefaults] setObject:value forKey:key];
[[NSUserDefaults standardUserDefaults] setObject:value forKey:key];
回答by Emilio Barcelos
To get rid of these rather annoying log messages (that's all they are), go to FBSDKCoreKit's FBSDKKeychainStore.mfile and comment lines 93 and 134:
要摆脱这些相当烦人的日志消息（仅此而已），请转到 FBSDKCoreKit 的FBSDKKeychainStore.m文件并注释第 93 和 134 行：
//NSLog(@"Falling back to storing access token in NSUserDefaults because of simulator bug");
Voilá... gone!
瞧……走了！
Note:This is current for Facebook SDK for iOS version 4.23.0.
注意：这是适用于 iOS 版本 4.23.0 的 Facebook SDK 的最新版本。
For CocoaPods:The file can be found in your Xcode workspace under:
Pods > Pods > FBSDKCoreKit > FBSDKKeychainStore.m
对于 CocoaPods：该文件可以在您的 Xcode 工作区中找到：
Pods > Pods > FBSDKCoreKit > FBSDKKeychainStore.m
