當它位於正確的位置時禁止拖動對象

Question

當「item」位於正確的位置時，禁用拖動時出現問題。我試圖使用e.currentTarget.removeEventListener(MouseEvent.MOUSE_DOWN, dragObject)，但似乎沒有任何反應。我認爲它不能正常工作，因爲我想刪除的事件不是`dragObject，但它返回的函數...請幫助; 這裏是我的代碼

function dragObject(indx1:int,indx2:int):Function { 
return function(event:MouseEvent){ 
var item:MovieClip=MovieClip(event.currentTarget); 
item.startDrag(); 
var topPos:uint=item.parent.numChildren-1; 
var itemSound:Sound = new Sound(); 
itemSound.load(new URLRequest("sounds/"+dirArray[indx1]+indx2+".mp3")); 
if(!activeSound) 
{ 
    itemSound.play(); 
    activeSound=true; 
} 
activeSound=false; 
item.parent.setChildIndex(item, topPos); 
} 
function releaseObject(indx:int,origX:int,origY:int):Function{ 
return function(e:MouseEvent):void{ 
    var item:MovieClip=MovieClip(e.currentTarget); 
    item.stopDrag(); 
    trace(indx); 
    if(indx==1) 
    { 
     if (box5_mc.hitTestPoint(item.x,item.y)) { 
     if(insideBox5==1){ 
      item.x=73;//2nd locations 
      item.y=298; 
      myBell.play(); 
      } 
     else if(insideBox5==2){ 
      item.x=90;//3rd locations 
      item.y=267; 
      myBell.play();} 
     else{ 
      item.x=32; //1st locations 
      item.y=268 
      myBell.play(); 
     } 
     insideBox5++; 
     e.currentTarget.removeEventListener(MouseEvent.MOUSE_DOWN,dragObject); 
     correctItems++; 

     } 
     else { 
     item.x=origX; 
     item.y=origY; 
     myBoing.play(); 
     } } 

我已經更新了這篇文章，包括在那裏我把它叫做，它實際上是在我的主要功能。這裏有通話功能dragObject和releaseObject

var itemImage:Loader = new Loader(); 
    //loads the file on location... 
    itemImage.load(new URLRequest("images/"+dirArray[indexc[count-1]]+index[count2]+".png"));//load random image from random images folders 
    var functionOnDrag:Function = dragObject(indexc[count-1],index[count2]); 
    index.splice(0,1); 
    var functionOnRelease:Function = releaseObject(indexc[count-1],tempx-42,tempy); 
    trace(index);//trace index 
    trace(count);//trace count 
    count++; 
    pb[i].addChild(itemImage);//adds the picture on the picBox 
    pb[i].addEventListener(MouseEvent.MOUSE_DOWN,functionOnDrag); 
    pb[i].addEventListener(MouseEvent.MOUSE_UP,functionOnRelease); 

Answer 1

部分你有非常具體的代碼......這裏工作示例拖動對象，如果達到屏幕的右側將被停止。正如你所看到的，在我的例子中，我不使用像你這樣的結構（函數生成另一個函數）。注意onDown，onMouseUp和onMoveCursor方法：

package { 

    import flash.display.Sprite; 
    import flash.display.StageAlign; 
    import flash.display.StageScaleMode; 
    import flash.events.Event; 
    import flash.events.MouseEvent; 

    public class StackOverflow extends Sprite { 

     private var _dragObject:Sprite; 

     public function StackOverflow() { 
      addEventListener(Event.ADDED_TO_STAGE, onAdded); 
     } 

     private function setup():void { 
      var randomObject:Sprite = createObject(); 

      addChild(randomObject); 

      //Place it in center of scene 
      randomObject.x = stage.stageWidth >> 1; 
      randomObject.y = stage.stageHeight >> 1; 

      //Register mouse down for drag 
      randomObject.addEventListener(MouseEvent.MOUSE_DOWN, onDown); 
     } 

     private function onDown(e:MouseEvent):void { 
      //By moving mouse will check current position 
      stage.addEventListener(MouseEvent.MOUSE_MOVE, onMoveCursor); 
      stage.addEventListener(MouseEvent.MOUSE_UP, onMouseUp); 

      _dragObject = e.currentTarget as Sprite; 

      _dragObject.startDrag(); 
     } 

     private function onMouseUp(e:MouseEvent):void { 
      stage.removeEventListener(MouseEvent.MOUSE_MOVE, onMoveCursor); 
      stage.removeEventListener(MouseEvent.MOUSE_UP, onMouseUp); 

      if (_dragObject != null) { 
       _dragObject.stopDrag(); 
       _dragObject = null; 
      } 
     } 

     private function onMoveCursor(e:MouseEvent):void { 
      //Assert that right side is end of the screen 
      if (_dragObject.width + _dragObject.x >= stage.stageWidth) { 
       trace("Gotcha!") 
       onMouseUp(null); 
      } 
     } 

     private function createObject():Sprite { 
      var result:Sprite = new Sprite(); 
      result.graphics.beginFill(Math.random() * 0xFFFFFF); 
      result.graphics.drawRect(0, 0, 20, 20); 
      result.buttonMode = true; 
      result.tabEnabled = false; 
      return result; 
     } 

     private function onAdded(e:Event):void { 
      removeEventListener(Event.ADDED_TO_STAGE, onAdded); 

      stage.align = StageAlign.TOP_LEFT; 
      stage.scaleMode = StageScaleMode.NO_SCALE; 

      setup(); 
     } 
    } 
}