第108行\t 1136：參數數量不正確。預計1

Question

我無法解決這個錯誤，當我這樣做會導致另一個。我希望能夠擊中關鍵「71」，並將新的movieclip實例添加到舞臺上。有什麼建議麼？我是個新手，所以可能很多錯誤......

包{

import flash.display.MovieClip; //imports needed 
import flash.display.Sprite; 
import flash.events.MouseEvent; 
import flash.events.Event; 
import flash.text.engine.EastAsianJustifier; 
import flash.events.KeyboardEvent; 
import flash.display.Stage; 
public class myJellyFish extends MovieClip { 

    private var startScaleX:Number; 
    private var startScaleY:Number; 
    //private var cliqued:Number; 
    private var stayonscreenLeft:Number; 
    private var stayonscreenRight:Number; 
    private var stayonscreenTop:Number; 
    private var stayonscreenBottom:Number; 

    private var moveDirection:Number; 
    private var speed:Number; 
    private var turnspeed:Number; 


    public function myJellyFish() { 



     startScaleX = this.scaleX; 
     startScaleY = this.scaleY; 
     stayonscreenBottom = 400; 
     stayonscreenRight = 500; 
     stayonscreenLeft = 5; 
     stayonscreenTop = 5; 
     moveDirection = .5; 
     speed = Math.random()*10; 
     turnspeed = 25; 

     this.addEventListener(MouseEvent.ROLL_OVER, scrolledOver); 
     this.addEventListener(MouseEvent.ROLL_OUT, scrolledOff); 
     this.addEventListener(MouseEvent.CLICK, directionChange); 
     this.addEventListener(Event.ENTER_FRAME, life) 


     trace("custom class be a working"); 
     // constructor code 
    } 

    function myMethod() { 
     trace("method also be a workin'"); 
     } 

    private function scrolledOver(Event:MouseEvent):void{ 
     this.alpha = .5; 
     } 

    private function scrolledOff(Event:MouseEvent):void{ 
     this.alpha = 1; 
     } 
    private function directionChange(e:Event):void{ 
     moveDirection = moveDirection * -1; 
     } 
    private function life(e:Event):void{ 
     if (moveDirection > 0){ 
      Hmovement(); 
      } 
     if (moveDirection < 0){ 
      Vmovement(); 
      } 
     } 
    private function Vmovement():void{ 
     this.y += speed; 

     if(this.y <= stayonscreenBottom){ 
      speed = speed * -1; 
      this.startScaleY * -1; 
      } 
     if(this.y >= stayonscreenTop){ 
      speed = speed * -1; 
      this.startScaleY * -1; 
      } 
     } 
     private function Hmovement():void{ 
      this.x += speed; 

      if(this.x >= stayonscreenRight){ 
       speed = speed * -1; 
       } 
      if(this.x <= stayonscreenLeft){ 
       speed = speed * -1; 
       } 
      } 
     private function generate(e:KeyboardEvent):void{ 

      var movieClip:myJellyFish = new myJellyFish(); 
      addChild(movieClip); 
      movieClip.x = (Math.random() * 200) + 20; 
      movieClip.y = (Math.random()*200) + 20; 
      movieClip.name = "jellyfish"; 
      } 



     public function moreClips (event:KeyboardEvent){   //if that key is "F" it will play the tween 
      trace(event.keyCode); 

      if (event.keyCode == 71){ 
      generate(); 
      } 

     } 

    }//end class 

}//end package 

Answer 1

首先，作爲凜說，有調用generate功能時，將是一個參數錯誤。其次，您需要添加一個KeyboardEvent（ref）監聽器才能接收鍵盤事件。

監聽鍵盤事件的最簡單方法是將偵聽器添加到Stage（因爲無論鍵盤觸發的位置，KeyboardEvents都會觸發舞臺）。爲了獲得對舞臺的引用，您需要等到您的MovieClip已添加到DisplayList（當您的myJellyFish的實例已添加爲某個子節點時）。

您可以通過偵聽Event.ADDED_TO_STAGE事件來完成此操作。

// Your constructor 
public function myJellyFish() { 
    // ... 
    // Add event listener which will trigger when 
    // the MovieClip has been added to the DisplayList 
    this.addEventListener(Event.ADDED_TO_STAGE, handleAddedToStage); 
} 

protected function handleAddedToStage(e:Event):void { 
    // Remove event listener since it's no longer needed 
    this.removeEventListener(Event.ADDED_TO_STAGE, handleAddedToStage); 

    // You now have a reference to the stage, let's add the KeyboardEvent listener 
    stage.addEventListener(KeyboardEvent.KEY_DOWN, moreClips); 
} 

修改：固定錯字removeEventListener。

Answer 2

你產生功能具有1個參數至極爲e：的KeyboardEvent，既然你有功能moreClips其alredy具有的KeyboardEvent，你不」 t需要生成函數的參數。

基本上你現在正在做的是調用沒有參數的generate（）函數。你所要做的就是從函數中刪除參數。

private function generate():void{ 
     var movieClip:myJellyFish = new myJellyFish(); 
     addChild(movieClip); 
     movieClip.x = (Math.random() * 200) + 20; 
     movieClip.y = (Math.random()*200) + 20; 
     movieClip.name = "jellyfish"; 
}