Swift 3 计数计时器无法在 UILabel 中显示更新的数字

Question

我有下面的计数定时器，但是在我运行这个程序之后，UILable从0开始生成到()。但是柜台号码是正确的，因为我可以看到打印日志是正确的。我可以知道代码出了什么问题吗？`

@IBOutlet weak var labelForBinaryCount: UILabel!

    var timer = Timer()
    var counter = 0


    @IBAction func start() {

        timer = Timer.scheduledTimer(timeInterval: 1, target:self, selector: #selector(Resting.updateCounter), userInfo: nil, repeats: true)

    }

    override func viewDidLoad() {
        super.viewDidLoad()
        labelForBinaryCount.text = String(counter)

    }

    func updateCounter() {
        labelForBinaryCount.text = String(describing: counter += 1)
        print(counter)
    }

    @IBAction func pauseButton(sender: AnyObject) {
        timer.invalidate()
    }
    @IBAction func clearButton(sender: AnyObject) {
        timer.invalidate()
        counter = 0
        labelForBinaryCount.text = String(counter)
    }`

Answer 1

试试这个：

func updateCounter() {
    counter += 1
    labelForBinaryCount.text = String(counter)
    print(counter)
}

我想你明白了。 ;)

Swift 3 计数计时器无法在 UILabel 中显示更新的数字

Swift 3 Counting up timer failed to show the updated number in UILabel

ios

swift3

uilabel

nstimer