Question

我正在尝试制作一个会问问题的应用，而您必须回答是非题。这是我正在参加的在线课程的一部分。我首先面对的挑战是在屏幕上显示“ 4 + 2等于6”并显示它。这是我为显示该代码而编写的代码。

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var questionLabel: UILabel!
    @IBOutlet weak var optionBar: UIProgressView!
    @IBOutlet weak var trueButton: UIButton!
    @IBOutlet weak var falseButton: UIButton!


    override func viewDidLoad() {
        super.viewDidLoad()
        questionLabel.text = "Four + two is equal to 6"
    }



    @IBAction func answerButtonPressed(_ sender: UIButton) {
    }
}

当我尝试运行模拟器时，出现错误：

以NSException类型的未捕获异常终止

它将我带到我的appDelegate屏幕并显示错误：

异常：“ [

第3行。代码如下：

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {



    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        return true
    }

    func applicationWillTerminate(_ application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }

    // MARK: UISceneSession Lifecycle
    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
        // Called when a new scene session is being created.
        // Use this method to select a configuration to create the new scene with.
        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
    }

    func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
        // Called when the user discards a scene session.
        // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
        // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
    }


}

你们中有人知道如何解决此问题吗？

尝试运行会询问问题的应用程序时出现错误

0 个答案: