ios - 从标签中获取值并将其添加到另一个标签中

Question

我试图从我的标签中获取 int 值并将它们传递给另一个标签并将它们添加在一起。下面的代码中，kicklabel、handballlabel、marklabel等都需要相加等于fantasylabel。根据此代码的设置方式，我不确定如何执行该操作。

我还希望能够添加更多行标签，以便将任意数量的标签数组添加到幻想标签中。

代码如下:

import UIKit

class ViewController: UIViewController {
    @IBOutlet weak var kickLabel1: UILabel!
    @IBOutlet weak var handballLabel1: UILabel!
    @IBOutlet weak var markLabel1: UILabel!
    @IBOutlet weak var tackleLabel1: UILabel!
    @IBOutlet weak var goalLabel1: UILabel!
    @IBOutlet weak var pointLabel1: UILabel!
    @IBOutlet weak var freeForLabel1: UILabel!
    @IBOutlet weak var freeAgainstLabel1: UILabel!
    @IBOutlet weak var fantasyLabel: UILabel!

    var counters: [UILabel: Int] = [:]

    override func viewDidLoad() {
        super.viewDidLoad()

        for label: UILabel in [kickLabel1,handballLabel1,markLabel1,tackleLabel1,goalLabel1,pointLabel1, freeForLabel1, freeAgainstLabel1, fantasyLabel] {
            counters[label] = 0

            for direction: UISwipeGestureRecognizerDirection in [.up, .down, .left, .right] {
                let swipeGesture = UISwipeGestureRecognizer(target: self, action: #selector(didSwipe(_:)))
                swipeGesture.direction = direction
                label.addGestureRecognizer(swipeGesture)
                label.isUserInteractionEnabled = true
                label.isMultipleTouchEnabled = true
            }
        }
    }

    @objc func didSwipe(_ gestureRecognizer: UISwipeGestureRecognizer) {
        guard let label = gestureRecognizer.view as? UILabel else { return }

        debugPrint("\(gestureRecognizer.direction)")

        switch gestureRecognizer.direction {
        case .up:
            counters[label] = counters[label]! + 10
            print(counters)
        case .down:
            counters[label] = 0
            print(counters)
        case .left:
            counters[label] = counters[label]! - 1
            print(counters)
        case .right:
            counters[label] = counters[label]! + 1
            print(counters)
        default:
            counters[label] = 0
        }

        label.text = "\(counters[label]!)"
    }
}

Answer 1

在 didSwipe 结束时，您需要对 counters 字典中存储的所有 Int 值求和。然后用该总和更新您的fantasy标签。

let sum = counters.reduce(0) { $0 + $1.value }
fantasyLabel.text = "\(sum)"

您可能不希望在 fantasy 标签上使用手势，因为该值是基于其他数据总和的只读值。

除了fantasy标签之外，我还会去掉其他单独的标签。使用 IBOutletCollect 存储 UILabel 数组。