快速按钮隐藏/显示不起作用

Question

我有意见。当我单击 btnStartWork 时，我希望将按钮设置为隐藏(有效)并且标签 startTime 显示开始时间(有效)并且 btnEndWork 正在显示(有效)。当我单击 btnEndWork 时，我没有隐藏任何按钮，并且 btnEndWork 仍在显示。他还为结束时间设置了结束时间标签，但也更新了开始时间。那真是有线。

class FirstViewController: UIViewController {

@IBOutlet weak var startTime: UILabel!
@IBOutlet weak var endTime: UILabel!
@IBOutlet weak var btnStartWorkLabel: UIButton!
@IBOutlet weak var btnEndWorkLabel: UIButton!

@IBAction func btnStartWork(_ sender: Any) {
    let currentdate = Date()
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "HH:mm"
    let convertedDate = dateFormatter.string(from: currentdate)

    startTime.text = "\(convertedDate)"

    btnStartWorkLabel.isHidden = true
    btnEndWorkLabel.isHidden = false
}
@IBAction func btnEndWork(_ sender: Any) {
    let currentdate = Date()
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = "HH:mm"
    let convertedDate = dateFormatter.string(from: currentdate)

    endTime.text = "\(convertedDate)"

    btnStartWorkLabel.isHidden = false
    btnEndWorkLabel.isHidden = true
}
override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}

更新问题

当单击 btnEndWork 时，我如何才能节省时间，同时处理两次？

Answer 1

听起来好像连线有误，查看界面生成器中的 Controller 是否有多个连接(如果您复制并粘贴标签或按钮，连接也会被复制)并尝试添加:

print("Start button pressed")

到

@IBAction func btnStartWork(_ sender: Any) 

和

print("End button pressed")

到

@IBAction func btnEndWork(_ sender: Any) 

查看按下按钮时输出是否正确。