Swift错误：信号SIGABRT如何解决它 [英] Swift error : signal SIGABRT how to solve it

问题描述

我只是Swift编码的初学者。我的想法很简单，这是一个带有两个按钮的应用程序。单击时，文本字段将更改其文本。
在Main.StoryBoard中，我添加了一个文本字段和两个按钮。
在ViewController.swift文件中。我这样写：

I'm just a beginner in Swift coding. My idea is quite simple which is an app with two buttons. When clicked, a textfield will change its text. In the Main.StoryBoard, I add a textfield and two buttons. In ViewController.swift file. I write as this:

import UIKit

class ViewController: UIViewController {
    @IBOutlet weak var textfield: UITextField!
    @IBOutlet weak var button: UIButton!
    @IBOutlet weak var button2: UIButton!

    @IBAction func action1(_ sender: UIButton) {
        textfield.text="you just clicked on button1"
    }
    @IBAction func action2(_ sender: UIButton) {
        textfield.text="you just clicked on button2"
    }
}

应该可以。但是，会出现一个错误，显示：

It is supposed to be all right. However, an error appears which shows:

thread1：signal SIGABRT

thread1:signal SIGABRT

在文件AppDelegate.swift行：

in file AppDelegate.swift line:

class AppDelegate: UIResponder, UIApplicationDelegate

我的代码出了什么问题？

What is wrong with my code?

推荐答案

我通过清理项目和重建来解决问题。

I solve the problem by clean the project and rebuild.

要清理项目，请执行到 MenuBar：产品 - >清洁

To clean the project go to MenuBar: Product -> Clean

然后重建只需像往常一样点击运行按钮

Then to rebuild just click Run button as usual

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