[英]SWIFT: Push segue is resulting in a modal segue instead
在我的情節提要中,模態選擇將用戶帶到“登錄”屏幕(從主屏幕)。 然后,我從“注冊”屏幕向下一個屏幕(“創建配置文件”)添加了一個PUSH segue,該屏幕嵌入在導航控制器中(“創建配置文件”屏幕是其中包含“測試”按鈕的屏幕)。
“注冊”屏幕的設置正常。 但是,當用戶輸入其憑據並單擊“注冊”時,確實會將其帶到正確的屏幕,但是使用了模態搜索與推送搜索。 我不知道為什么會這樣。
這是我的注冊視圖控制器代碼。 任何幫助將不勝感激!
import UIKit
import Parse
class SignInViewController: UIViewController {
@IBOutlet weak var usernameField: UITextField!
@IBOutlet weak var passwordField: UITextField!
@IBAction func signInButton(sender: AnyObject) {
PFUser.logInWithUsernameInBackground(usernameField.text!, password:passwordField.text!) {
(user: PFUser?, error: NSError?) -> Void in
if user != nil {
//self.performSegueWithIdentifier("loginUser", sender: self)
self.usernameField.text = ""
self.passwordField.text = ""
} else {
if let errorString = error?.userInfo["error"] as? String {
self.displayAlert("Login Failed", message: errorString)
}
}
}
}
@IBAction func signUpButton(sender: AnyObject) {
if usernameField.text == "" || passwordField.text == "" {
self.displayAlert("Missing Field(s)", message: "Username and password are required")
} else {
let user = PFUser()
user.username = usernameField.text
user.password = passwordField.text
user.signUpInBackgroundWithBlock {
(succeded, error) -> Void in
if let error = error {
if let errorString = error.userInfo["error"] as? String {
self.displayAlert("Sign Up Failed", message: errorString)
}
} else {
self.performSegueWithIdentifier("SignUpToCreate", sender: self)
self.usernameField.text = ""
self.passwordField.text = ""
}
}
}
}
//Dismiss the sign in screen
@IBAction func closeButton(sender: AnyObject) {
self.dismissViewControllerAnimated(true, completion: nil)
}
override func viewDidLoad() {
super.viewDidLoad()
//Format the text fields
textFieldUI()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
//Display alert function
func displayAlert(title: String, message: String) {
let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil))
self.presentViewController(alert, animated: true, completion: nil)
}
//Textfield UI
func textFieldUI() {
passwordField.leftView = UIView(frame: CGRectMake(0, 0, 8, 0))
passwordField.leftViewMode = .Always
usernameField.leftView = UIView(frame: CGRectMake(0, 0, 8, 0))
usernameField.leftViewMode = .Always
}
}
這是不可能的:
Root --(modal)--> SignUp --(push)--> NavigationController<->Detail
結構應該是這樣的
Root --(modal)--> NavigationController<->Signup --(push)--> Detail
我認為您的設計有誤,因為您不想在注冊控制器中顯示導航欄。 您可以通過在顯示它之前設置視圖控制器navigationBarHidden
來防止這種情況。
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