在 Swift 中多次按下按钮

Question

当我在应用程序中多次按下按钮时，AppDelegate 中出现错误。

Thread 1: signal SIGABRT

这是我的按钮代码。如果您有任何问题，请务必告诉我！

//import Firebase
//import SVProgressHUD
//import UIKit

@IBAction func logInPressed(_ sender: AnyObject) {
    if emailTextField.text != "" || passwordTextField.text != "" {

        FirebaseApp.configure()
        Auth.auth().signIn(withEmail: emailTextField.text!, password: passwordTextField.text!) {
            (user, error) in
            SVProgressHUD.show()
            if error != nil {
                print(error!)
                self.incorrect.isHidden = false
                SVProgressHUD.dismiss()
            } else {
                self.incorrect.isHidden = true
                SVProgressHUD.dismiss()

                self.performSegue(withIdentifier: "Segue9", sender: self)
            }
        }
    } else {
        incorrect.isHidden = false
    }
}

Answer 1

FirebaseApp.configure() 需要在 application:didFinishLaunchingWithOptions: 函数上从 AppDelegate

崩溃可能是因为你调用了两次。

在 Swift 中多次按下按钮

Pressing a button more than once in Swift

firebase

svprogresshud

swift4

xcode9