flex图片移动不流畅

[discovery10]

我写了一个图片移动，但是移动时图片抖动很厉害，鼠标也会跑出图片

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init()">
	<mx:Script>
		<![CDATA[
			import mx.controls.Alert;
			
			private var _x:int;
			private var _y:int;
			private var _tempX:Number;
			private var _tempY:Number;
			private var isDown:Boolean;
			private function init():void {
				//can1.addEventListener(MouseEvent.CLICK,moveDown);
				isDown = false;
				myMove.duration = 100;
				//img.addEventListener(MouseEvent.CLICK,mouseClick);
				img.addEventListener(MouseEvent.MOUSE_DOWN,mouseDown);
				img.addEventListener(MouseEvent.MOUSE_MOVE,mouseMove);
				img.addEventListener(MouseEvent.MOUSE_UP,mouseUp);
				img.addEventListener(MouseEvent.MOUSE_OUT,mouseOut);
			}
			private function mouseClick(e:MouseEvent):void {
				Alert.show(img.x+'\t'+img.y,'aaa');
			}
			private function mouseDown(e:MouseEvent):void {
				isDown = true;
				_tempX = img.mouseX;
				_tempY = img.mouseY;
			}
			private function mouseMove(e:MouseEvent):void {
				if(isDown) {
					var x:Number = img.mouseX;
					var y:Number = img.mouseY;
					var isMove:Boolean = true;
					if(x-_tempX>0) {
						if(img.x+img.width>=can1.width-5) {
							isMove = false;
							//Alert.show(can1.maxHorizontalScrollPosition+' ','a');
						}
					} else {
						if(img.x<=0) {
							isMove = false;
						}
					}
					if(y-_tempY>0) {
						if(img.y+img.height>=can1.height-5) {
							isMove = false;
						}
					} else {
						if(img.y<=0) {
							isMove = false;
						}
					}
					if(isMove) {
						myMove.end();
						myMove.xBy = x-_tempX;
						myMove.yBy = y-_tempY;
						_tempX = x;
						_tempY = y;
						myMove.play();
					}
				}
			}
			private function mouseUp(e:MouseEvent):void {
				isDown = false;
			}
			private function mouseOut(e:MouseEvent):void {
				isDown = false;
			}
		]]>
	</mx:Script>
	<mx:Move id="myMove" target="{img}"/>
	<mx:Canvas id="can1" width="100%" height="100%" borderStyle="solid">
		<mx:Image source="image/fyzw_20092181054.jpg" x="0" y="0" width="500" height="375" id="img"/>
	</mx:Canvas>
</mx:Application>

请各位高手，帮忙看一下哪里有问题，感激不尽！

[archko]

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" creationComplete="init()">
    <mx:Script>
        <![CDATA[
            import mx.controls.Alert;
				import mx.effects.Move;
            
            private var _x:int;
            private var _y:int;
            private var _tempX:Number;
            private var _tempY:Number;
            private var isDown:Boolean;
				private var myMove:Move;
            private function init():void {
                //can1.addEventListener(MouseEvent.CLICK,moveDown);
                isDown = false;
                //myMove.duration = 100;
                //img.addEventListener(MouseEvent.CLICK,mouseClick);
                img.addEventListener(MouseEvent.MOUSE_DOWN,mouseDown);
                img.addEventListener(MouseEvent.MOUSE_MOVE,mouseMove);
                img.addEventListener(MouseEvent.MOUSE_UP,mouseUp);
                img.addEventListener(MouseEvent.MOUSE_OUT,mouseOut);
					 myMove=new Move();
					 myMove.target=img;
            }
            private function mouseClick(e:MouseEvent):void {
                Alert.show(img.x+'\t'+img.y,'aaa');
            }
            private function mouseDown(e:MouseEvent):void {
                isDown = true;
            }
            private function mouseUp(e:MouseEvent):void {
                isDown = false;
            }
            private function mouseOut(e:MouseEvent):void {
                isDown = false;
            }
				private function mouseMove(e:MouseEvent):void {
					if(isDown) {
					myMove.end();
						myMove.xBy=mouseX+_x-_tempX;
						myMove.yBy=mouseY+_y-_tempY;
						_tempX=mouseX;
						_tempY=mouseY;
						lab.text="myMove.xBy:"+myMove.xBy+":::myMove.yBy:"+myMove.yBy+
						":_tempX"+_tempX+":"+_tempY;
						myMove.play();
					}
				}
        ]]>
    </mx:Script>
    <mx:Canvas id="can1" width="100%" height="100%" borderStyle="solid">
        <mx:Image source="img/book1.gif" x="0" y="0" width="100" height="141" id="img"/>
    </mx:Canvas>
	 <mx:Label id="lab"/>
</mx:Application>

好那么一 点点.

[discovery10]

不行，图片还是有些抖动，而且鼠标容易跑出图片

[chinazhousheng]

感觉是mouseX的问题

[discovery10]

请各位高手帮忙一下，谢谢了！

[archko]

抖动是正常的,Flex自带的弹出层也是会抖的,
不过鼠标跑出去我就不知道了.

[shuzhan87]

用Flash做图片移动 加入到FLex中 我一般都是这么做的 这是美工和编程的互补

[archko]

那AS代码有不,可以参考下,CSDN头像编辑里的移动就很流畅,难道不是在Canvas里移动>

[CCjian]

抖动厉害是效果运行时,被不断触发

解决:

要么效果运行时,不被再次触发


要么就用单一的拖放移动

要么再去想别的方法实现