我試圖用代理從我的class Gameclock
更新@IBOutlet weak var gameclockLabel: UILabel!
。 我已閱讀並測試了大約一百萬種不同的方式,但無法使其工作。我認爲我讀得越多,我就越困惑。swift - 試圖用代理更新UILabel
你可以閱讀更多關於什麼我想在這裏做: swift invalidate timer in function
從這個問題,我添加了這個答案:var gameClock = Gameclock()
所以我能夠在class Gameclock
啓動功能,第一我試着對我的class ViewController: UIViewController
也一樣,但那不起作用,所以我決定嘗試使用委託。你認爲委託是正確的方式嗎?
我將在稍後的單獨的類中添加多個定時器,因此可能有更好的方法。
如果有人能指出我的方向是正確的,那就太好了。起初我以爲這將是不復雜,但似乎我誤以爲:)
完整的代碼如下:
import UIKit
protocol test1: class {
func updateLabel()
}
class ViewController: UIViewController, test1 {
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
override func viewDidLoad() {
super.viewDidLoad()
gameclockLabel.text = "00:00"
}
var gameClock = Gameclock()
var startstopPushed: Bool = false
@IBOutlet weak var gameclockLabel: UILabel!
@IBOutlet weak var startstop: UIButton!
@IBAction func startStopbutton(sender: AnyObject) {
if startstopPushed == false {
gameClock.startGameclock()
startstop.setImage(UIImage(named: "stop.png"), forState: UIControlState.Normal)
startstopPushed = true
}
else
{
gameClock.stopGameclock()
startstop.setImage(UIImage(named: "start.png"), forState: UIControlState.Normal)
startstopPushed = false
}
}
func updateLabel() {
print("updated")
gameclockLabel.text = gameClock.timeString
}
}
class Gameclock : NSObject {
var gameclockTimer = NSTimer()
var timeString: String = ""
var seconds = 0
var minutes = 0
weak var delegate: test1?
func startGameclock() {
print("start")
gameclockTimer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: Selector("updateGameclock"), userInfo: nil, repeats: true)
}
func stopGameclock() {
self.gameclockTimer.invalidate()
print("stopp")
}
func updateGameclock() {
seconds += 1
if seconds == 60 {
minutes += 1
seconds = 0
}
let secondsString = seconds > 9 ? "\(seconds)" : "0\(seconds)"
let minutesString = minutes > 9 ? "\(minutes)" : "0\(minutes)"
timeString = "\(minutesString):\(secondsString)"
print(timeString)
delegate?.updateLabel()
}
}
謝謝你的保羅!現在完美的作品:D –