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美好的一天,我在這裏是新的,希望這個問題不是太愚蠢。Swift非平衡呼叫開始/結束外觀轉換爲<UINavigationController:0x7fd61043fce0>
運行期間我收到了警告Unbalanced calls to begin/end appearance transitions for <UINavigationController: 0x7fd61043fce0>
。但是,我找不到代碼中有UINavigationController
的任何地方,也沒有找到項目中的任何其他文件。
import UIKit
class ViewController: UIViewController,PFLogInViewControllerDelegate, PFSignUpViewControllerDelegate, FBLoginViewDelegate {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
//self.navigationController?.navigationBarHidden = true
if(PFUser.currentUser() == nil){
var logInViewController = PFLogInViewController()
logInViewController.delegate = self
//customize logInViewController
logInViewController.fields = PFLogInFields.UsernameAndPassword | PFLogInFields.LogInButton | PFLogInFields.PasswordForgotten | PFLogInFields.Facebook | PFLogInFields.SignUpButton
logInViewController.facebookPermissions = ["public_profile", "email", "user_friends"]
logInViewController.logInView.logo = UIImageView(image: UIImage(named: "Logo"))
//create a signUpViewController instance
var signUpViewController = PFSignUpViewController()
signUpViewController.delegate = self
//add signUpViewController instance to logInViewController for signUp module.
logInViewController.signUpController = signUpViewController
self.parentViewController?.presentViewController(logInViewController, animated: true, completion: nil)
}else{
FBSession.activeSession().close()
}
}
我是否錯過了應該檢查的內容?
或者,將演示文稿移動到'viewDidAppear'中。 – 2015-02-11 13:52:10
謝謝! @RoryMcKinnel,幫助! – bobster 2015-02-17 14:24:52