Flex 上传图片 预览 加载图片到内存

Flex 上传图片 预览 加载图片到内存

 

			import mx.utils.*;   
			import flash.net.*;   
			
			private var fileReference:FileReference=new FileReference();   
			private var byteArray:ByteArray;   
			private var bitmapData:BitmapData;   
			private var loader:Loader=new Loader();   
			private function init():void   
			{                  
				fileReference.addEventListener(Event.COMPLETE,fileReferenceCompleteHandler);   
			}   
			private function fileReferenceCompleteHandler(e:Event):void   
			{   
				byteArray = fileReference.data;   
				loader.contentLoaderInfo.addEventListener(Event.COMPLETE,loaderCompleteHandler);   
				loader.loadBytes(byteArray);   
			}   
			private function loaderCompleteHandler(e:Event):void   
			{   
				var bitmap:Bitmap = Bitmap(loader.content);   
				bitmapData = bitmap.bitmapData;   
				img.source = bitmap;   
			}   
			private function fileReferenceSelectHandler(e:Event):void   
			{   
				fileReference.load();   
			}   
			private function btnClick():void   
			{   
				fileReference.browse();   
				fileReference.addEventListener(Event.SELECT,fileReferenceSelectHandler);   
			} 

 可以运行程序，请查看附件。

评论

1 楼 liuyuan0371 2011-09-24