flash 游戏设计笔记：递归清除bitmapData

public static function proceesChild(container : DisplayObjectContainer) : void {if (container == null) {return;}var length : uint = container.numChildren;for (var i : int = 0;i < length;i++) {if (container.getChildAt(i) is DisplayObjectContainer) {var displayObjectContainer : DisplayObjectContainer = container.getChildAt(i) as DisplayObjectContainer;proceesChild(displayObjectContainer);displayObjectContainer = null;} else if (container.getChildAt(i) is Bitmap) {var bm : Bitmap = container.getChildAt(i) as Bitmap;if (bm.bitmapData) {bm.bitmapData.dispose();bm = null;}} else if (container.getChildAt(i) is DisplayObject) {var displayObject : DisplayObject = container.getChildAt(i) as DisplayObject;displayObject = null;}}SpriteUtil.clearSprite(container);} public static function clearSprite(v : DisplayObjectContainer) : void {if (v == null)return;var obj : DisplayObject;while (v.numChildren > 0) {obj = v.getChildAt(0);v.removeChild(obj);obj = null;}}