TypeError：錯誤＃1034：類型強制失敗：無法將flash.display :: Loader @ 25aa6d41轉換爲flash.display.MovieClip

Question

我正在製作遊戲，基本上是拖動遊戲，但是當我拖動我的對象時，此錯誤顯示「TypeError：錯誤＃1034：類型強制失敗：無法將flash.display :: Loader @ 25aa6d41轉換爲flash.display.MovieClip。」我不知道如何調試它，因爲我是新來as3..please幫助

這裏的

enter code here 
var xmlRequest:URLRequest = new URLRequest("items.xml"); 
var xmlLoader:URLLoader = new URLLoader(xmlRequest); 
var xmlFile:XML; 
var xcoord:Number = 24; 
var ycoord:Number = 157; 
var colorArray:Array = new Array();//array for picture directory 
colorArray[1]="images/blue/blue_"; 
colorArray[2]="images/green/green_"; 
colorArray[3]="images/indigo/indigo_"; 
colorArray[4]="images/orange/orange_"; 
colorArray[5]="images/pink/pink_"; 
colorArray[6]="images/red/red_"; 
colorArray[7]="images/violet/violet_"; 
colorArray[8]="images/yellow/yellow_"; 
var totalBlue:Number; 
var totalGreen:Number; 
var totalIndigo:Number; 
var totalOrange:Number; 
var totalPink:Number; 
var totalRed:Number; 
var totalViolet:Number; 
var totalYellow:Number; 
var total:Array = new Array(); 
var pb:Array=new Array(); 
var index:Array = new Array();//array for picking picture number 
var indexc:Array = new Array();//array for picking picture directory 

xmlLoader.addEventListener(Event.COMPLETE,xmlLoadComplete); 

function xmlLoadComplete(e:Event):void{ 

xmlFile = new XML(xmlLoader.data); 
total[1]=xmlFile.blue.image.length(); 
total[2]=xmlFile.green.image.length(); 
total[3]=xmlFile.indigo.image.length(); 
total[4]=xmlFile.orange.image.length(); 
total[5]=xmlFile.pink.image.length(); 
total[6]=xmlFile.red.image.length(); 
total[7]=xmlFile.violet.image.length(); 
total[8]=xmlFile.yellow.image.length(); 
var tempArray:Array = new Array(); 
var ind1:Array=randomArray(total[1]); 
var ind2:Array=randomArray(total[2]); 
var ind3:Array=randomArray(total[3]); 
var ind4:Array=randomArray(total[4]); 
var ind5:Array=randomArray(total[5]); 
var ind6:Array=randomArray(total[6]); 
var ind7:Array=randomArray(total[7]); 
var ind8:Array=randomArray(total[8]); 

indexc = randomArray(8); 

var count:int=1; 
var count2:int=0; 
for(var i:int=1;i<=24;i++)//on xml load completes, creates a 2x12 picture  table/picBox 
{ 
    pb[i]=new picBox();//create a userdefined movieclip 
    pb[i].x=xcoord; 
    pb[i].y=ycoord; 
    pb[i].buttonMode=true; 
    addChild(pb[i]); 
    xcoord+=pb[i].width+2;//sets x starting point of pb,value 2 = space between movieclips 
    if(i==12) 
    { 
     xcoord=24; 
     ycoord+=pb[i].height+10;//sets y starting point of pb,10=space 
    } 

    if(count==9) 
    { 
     count=1; 
     indexc=randomArray(8); 
    } 
    else 
    count2=0; 
    if(indexc[count-1]==1)index=ind1; 
    else if(indexc[count-1]==2)index=ind2; 
    else if(indexc[count-1]==3)index=ind3; 
    else if(indexc[count-1]==4)index=ind4; 
    else if(indexc[count-1]==5)index=ind5; 
    else if(indexc[count-1]==6)index=ind6; 
    else if(indexc[count-1]==7)index=ind7; 
    else if(indexc[count-1]==8)index=ind8; 
    trace(indexc); 
    var loader:Loader = new Loader();//loads the file on location... 
    loader.load(new URLRequest(colorArray[indexc[count-1]]+index[count2]+".png"));//load random image from random images folders 
    index.splice(0,1); 
    trace(index);//trace index 
    trace(count);//trace count 
    count++; 
    pb[i].addChild(loader);//adds the picture on the picBox 
    pb[i].addEventListener(MouseEvent.MOUSE_DOWN,dragObject); 
    pb[i].addEventListener(MouseEvent.MOUSE_UP,releaseObject); 
} 
} 
function dragObject(event:MouseEvent):void { 
var item:MovieClip=MovieClip(event.target); 
item.startDrag(); 
var topPos:uint=this.numChildren-1; 
this.setChildIndex(item, topPos);  
} 
function releaseObject(event:MouseEvent):void{ 
var item:MovieClip=MovieClip(event.target); 
item.stopDrag();  
if (box1_mc.hitTestPoint(item.x,item.y)) { 
    item.x=33; 
    item.y=58; 
} else { 
    //item.x=orig1X; 
    //item.y=orig1Y; 
} 
} 

//returns Array with random non repeating number 
function randomArray(len:int):Array { 
var tempArray:Array=new Array(); 
var resultArray:Array=new Array(); 
for(var i:int=1;i<=len;i++) 
{ 
    tempArray[i]=i; 
} 
var mult:int=len; 
for(var i2:int=0;i2<len;i2++) 
{ 
    var randnum:int = Math.floor (Math.random() * mult+1); 
    var randomNum:int = tempArray [randnum]; 
    resultArray.push (randomNum); 
    tempArray.splice (randnum, 1); 
    mult--; 
} 
return (resultArray); 
} 

Answer 1

它說在你的代碼的某個地方的代碼，你綁到使用Loader MovieClip對象應該在的對象。瀏覽你的代碼，我看到兩個地方你已經鑄造了一個對象用作Movieclip（一個Loader不起作用）。嘗試在這些位置追查event.target以查看它是否是MovieClip對象或您內部的Loader對象。

如果顯示加載器對象，則可能是導致錯誤的原因。嘗試將event.target更改爲event.currentTarget。

我理解上的差異是event.target通常是你（MovieClip對象中的Loader對象）點擊對象，而event.currentTarget是處理具有事件偵聽器的事件的對象，這是影片剪輯你的方式在這種情況之後。 （任何人，如果我錯了，隨時糾正我）

作爲一個方面說明，如果你使用的是Flash IDE，你也可以按'control + shift + enter'（而不是控制+輸入）使用調試器進行測試，這通常會向您顯示出現錯誤的確切行。