Flash AS3 垃圾回收机强制执行（强烈推荐）

这是本人强烈推荐的释放内存方法！

具体测试：

测试结果：

2.2使用BitmapData + 垃圾回收hack? ? 内存占用? ?12M

package {
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.Sprite;
	import flash.net.LocalConnection;

	public class MoonSpirit extends Sprite {
		private const SQR_AMOUNT:int=10000;//方块数量        
		private var _container_sp:Sprite;//容器sprite
		private var _sqrList:Array;//所有方块的引用

		public function MoonSpirit() {
			init();
		}

		private function init():void {
			_container_sp=new Sprite  ;
			addChild(_container_sp);
			//initNoBitmapDataView( );
			initBitmapDataView();
		}

		//初始化 通过通常手段 显示
		private function initNoBitmapDataView():void {
			layoutTenThousandSqr();
		}

		//初始化 通过BitmapData快照 显示
		private function initBitmapDataView():void {
			layoutTenThousandSqr();
			var myBitmapDataObject:BitmapData=new BitmapData(150,150,false,0xFF0000);
			var myImage:Bitmap=new Bitmap(myBitmapDataObject);
			addChild(myImage);
			unLayoutTenThousandSqr();
			_sqrList=null;
			doClearance();
		}

		private function layoutTenThousandSqr():void {
			_sqrList=new Array  ;
			for (var i:int=0; i<SQR_AMOUNT; i++) {
				_sqrList.push(new Sprite  );
				_sqrList[i].graphics.beginFill(0xff0000);
				_sqrList[i].graphics.drawRect(0,100,100);
				_sqrList[i].graphics.endFill();
				_container_sp.addChild(_sqrList[i]);
			}
		}

		//不显示
		private function unLayoutTenThousandSqr():void {
			for (var i:int=0; i<SQR_AMOUNT; i++) {
				_container_sp.removeChild(_sqrList[i]);
				delete _sqrList[i];
			}
		}

		//精髓，垃圾回收机强制调用
		private function doClearance():void {
			trace("clear");
			try {
				new LocalConnection  .connect("foo");
				new LocalConnection  .connect("foo");
			} catch (error:Error) {

			}
		}
	}
}