查看控制器加載時啓動操作

Question

如何在視圖控制器加載屏幕時啓動操作？

我已經成功地做我想做與@IBAction的功能，但我不希望有一個按鈕，按下該行動發生，我希望它開始時的動作頁面加載

有什麼想法？

---

class ViewController: UIViewController { 
var progress: KDCircularProgress! 


@IBOutlet weak var Label1: UILabel! 



var LabelText = String() 

var scorestart = 1.0 
var anglepercent = 3.6 


override func viewDidLoad() { 
    super.viewDidLoad() 




    Label1.text = LabelText 

    view.backgroundColor = UIColor(white: 0.22, alpha: 1) 

    progress = KDCircularProgress(frame: CGRect(x: 0, y: 0, width: 200, height: 200)) 
    progress.startAngle = -90 
    progress.progressThickness = 0.2 
    progress.trackThickness = 0.3 
    progress.clockwise = true 
    progress.gradientRotateSpeed = 10 
    progress.roundedCorners = false 
    progress.glowMode = .Forward 
    progress.glowAmount = 0.9 
    progress.setColors(UIColor.yellowColor()) 
    progress.center = CGPoint(x: view.center.x, y: view.center.y + 25) 
    view.addSubview(progress) 
} 

@IBAction func Animate(sender: AnyObject) { 
    progress.angle = Double(scorestart * anglepercent) 
    progress.animateFromAngle(0, toAngle: 270, duration: 2) { 
     completed in 
     if completed { 
      print("animation stopped, completed") 
     } else { 
      print("animation stopped, was interrupted") 
     } 

Answer 1

用途： -

基本這裏的想法是，只要你的觀點將加載相應的類將查找到viewWillAppear(animated: Bool)功能，如果它存在於它的代碼將在它執行所有的代碼當特定視圖即將出現在您的用戶界面上時，您的代碼塊viewWillAppear(animated: Bool)將被調用。

class ViewController: UIViewController { 
    var progress: KDCircularProgress! 


    @IBOutlet weak var Label1: UILabel! 



    var LabelText = String() 

    var scorestart = 1.0 
    var anglepercent = 3.6 


    override func viewDidLoad() { 
     super.viewDidLoad() 

     Label1.text = LabelText 

     view.backgroundColor = UIColor(white: 0.22, alpha: 1) 


    } 


override func viewWillAppear(animated :Bool) { 
     super.viewWillAppear(animated) 

     progressActn() 
      //Setting up your progress layer 
     animateActn() 
      //Animating that progress layer 
    } 



@IBAction func Animate(sender: AnyObject) { 
     animateActn() 
    } 

func animateActn(){ 
     progress.angle = Double(scorestart * anglepercent) 
progress.animateFromAngle(0, toAngle: 270, duration: 2) { 
    completed in 
    if completed { 
     print("animation stopped, completed") 
    } else { 
     print("animation stopped, was interrupted") 
    } 
    } 

    } 
func progressActn(){ 

     progress = KDCircularProgress(frame: CGRect(x: 0, y: 0, width: 200, height: 200)) 
     progress.startAngle = -90 
     progress.progressThickness = 0.2 
     progress.trackThickness = 0.3 
     progress.clockwise = true 
     progress.gradientRotateSpeed = 10 
     progress.roundedCorners = false 
     progress.glowMode = .Forward 
     progress.glowAmount = 0.9 
     progress.setColors(UIColor.yellowColor()) 
     progress.center = CGPoint(x: view.center.x, y: view.center.y + 25) 
     view.addSubview(progress) 

} 
}