当我在 viewDidLoad
中运行应用程序时,我需要检查用户之前是否登录过。
if FBSDKAccessToken.currentAccessToken() != nil {
print("1")
presentViewController(controller, animated: true, completion: nil)
} else {
print("2")
let button = FBSDKLoginButton()
button.delegate = self
button.readPermissions = ["public_profile", "user_friends"]
view.addSubview(button)
}
它总是打印"2"
。为什么?
最佳答案
必须在AppDelegate
中实现以下两个方法:
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
return FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions)
}
func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject) -> Bool {
return FBSDKApplicationDelegate.sharedInstance().application(application, openURL: url, sourceApplication: sourceApplication, annotation: annotation)
}
关于ios - 如何检查用户是否在 iOS 中使用 FBSDKLoginKit 登录?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/32565164/