As3再生中に現在のクリップを削除する

Question

ムービークリップをステージに追加するボタンがあり、別のボタンをクリックして別のボタンを追加するとボタンが離れることはありません。同様の問題が掲載されているのを見たことがありますが、答えはどれも私のためには役に立たなかった

btnBlue.addEventListener(MouseEvent.CLICK, fl_MouseOverHandler1); 
function fl_MouseOverHandler1(evt: MouseEvent): void { 
    var ballBlue: BallBlue = new BallBlue; 
    addChild(ballBlue); 
    addChildAt(ballBlue, 0); 
    ballBlue.x = 100; //sets the x position 
    ballBlue.y = 100; //sets the y position} 

    function onClick(evt:MouseEvent):void { */to remove clip if one is playing 
     removeChildAt(0) 
    } 
} 

btnRed.addEventListener(MouseEvent.CLICK, fl_MouseOverHandler2); 
function fl_MouseOverHandler2(evt: MouseEvent): void { 
    var ballRed: BallRed = new BallRed; 
    addChild(ballRed); 
    addChildAt(ballRed, 0); 
    ballRed.x = 100; //sets the x position 
    ballRed.y = 100; //sets the y position} 
    parent.BallBlue.removeMovieClip(); 

    function onClick(evt:MouseEvent):void { */to remove clip if one is playing 
     removeChildAt(0) 
    } 
} 

Answer 1

btnBlue.addEventListener(MouseEvent.CLICK, btnBlue_clickHandler); 
btnRed.addEventListener(MouseEvent.CLICK, btnRed_clickHandler); 

var ballBlue: BallBlue = new BallBlue(); 
var ballRed: BallRed = new BallRed(); 

function btnBlue_clickHandler(evt:MouseEvent):void { 
    removeAllBalls(); 
    addChild(ballBlue); 
    ballBlue.x = 100; //sets the x position 
    ballBlue.y = 100; //sets the y position 
} 

function btnRed_clickHandler(evt:MouseEvent):void { 
    removeAllBalls(); 
    addChild(ballRed); 
    ballRed.x = 100; //sets the x position 
    ballRed.y = 100; //sets the y position 
} 

function removeAllBalls():void { 
    if (contains(ballBlue)) 
    { 
     removeChild(ballBlue); 
    } 
    if (contains(ballRed)) 
    { 
     removeChild(ballRed); 
    } 
}