swift

Question

我编写了一些代码，当用户点击屏幕上的任何地方时，points/score/taps 将递增 1。但问题是它会计算我连续点击了多少次，如果我离开按下它之间的 1 秒间隔将重新启动计数器。有什么办法可以让它停止重启吗？

CODE:

import UIKit

class ViewController: UIViewController {



    @IBOutlet weak var tapsLabel: UILabel!

    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.
    }


    override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {

        let touch = touches.first as! UITouch
        let tapCount = touch.tapCount


        tapsLabel.text = "Taps: \(tapCount)"

    }
}

Answer 1

The tapCount documentation says:

The value of this property is an integer indicating the number of times the user tapped their fingers on a certain point within a predefined period.

它应该在某个“预定时间段”后重置。您正试图将它用于并非设计用于的用途。

相反，您需要在 ViewController 上创建一个属性来计算总点击次数：

class ViewController: UIViewController {

    private var tapCount = 0
    @IBOutlet weak var tapsLabel: UILabel!

    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        tapCount += 1
        tapsLabel.text = "Taps: \(tapCount)"
    }
}

（请注意，我这里的代码是针对 iOS 9 API 的。touchesBegan:withEvent: 方法签名与 iOS 8 API.)

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touch

taps