Swift 通过得分来激活动作
如何通过达到特定分数来设置动作?例如,弹出窗口或动画Swift 通过得分来激活动作,swift,Swift,如何通过达到特定分数来设置动作?例如,弹出窗口或动画 import UIKit class ViewController: UIViewController { @IBOutlet var ScoreLabel: UILabel! var taps = 0 var highscore = 200 override func viewDidLoad() { super.viewDidLoad() let defaults =
import UIKit
class ViewController: UIViewController {
@IBOutlet var ScoreLabel: UILabel!
var taps = 0
var highscore = 200
override func viewDidLoad() {
super.viewDidLoad()
let defaults = NSUserDefaults.standardUserDefaults()
if let storedTaps = defaults.objectForKey("key") as? Int {
self.taps = storedTaps
setLabel(storedTaps)
}
}
@IBAction func ScoreButton(sender: UIButton) {
taps += 1
setLabel(taps)
let defaults = NSUserDefaults.standardUserDefaults()
defaults.setInteger(taps, forKey: "key")
}
func setLabel(taps:Int) {
ScoreLabel.text = "Taps: \(taps)"
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
您可以为
taps
变量实现didSet
,每次设置taps
的值时都会触发该变量,然后检查该变量设置的值
像这样:
var taps = 0 {
didSet {
if taps == 5 {
print("You have reaches 5 taps !!")
}
}
}
当我将其插入代码时,出现了一个错误,上面写着“预期声明”,我能做些什么来修复它呢?重写func didReceiveMemoryWarning(){super.didReceiveMemoryWarning()//释放所有可以重新创建的资源。var taps=0{didSet{如果taps=5{print(“您已达到5次点击!!”)}}我将其粘贴到我的DidReceiveMemoryWarning中,并将其放置在您当前的
var taps=0