ios - TableViewController - barButtonItem

Question

我有一个嵌入在 UINavigationController 中的 UITableView。我在 Storyboard中设置了一个 rightBarButtonItem 。如果我以正常方式继续，一切都会正常。如果我从 LAPolicy.DeviceOwnerAuthenticationWithBiometrics 闭包中使用， barButtonItem 想要显示，但它有效。

失败了!!

    // Do fingerprint authentication
  if lax.canEvaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, error:&error){

 let reason = "Athenticate for login"       
 lax.evaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, localizedReason: reason, reply: {(success: Bool, authenticationError : NSError?) -> Void in

            // check whether evaluation of fingerprint was successful
            if success {
                self.addCircle(0)
                self.performSegueWithIdentifier("detail", sender: self)
                print("Fingerprint validated.")

如果我旋转设备，该项目就会变得可见。有人知道这里发生了什么事吗？还是“四处走走”？谢谢:)

Answer 1

Normal segue

Segue from DeviceOwnerAuthenticationWithBiometrics