我希望在XML响应中将许多小的PNG文件作为base64编码的URI传递,但似乎没有办法使flex呈现这些图像。我在考虑数据uri方案,但似乎不支持。
尝试了它并且它似乎不起作用(没有触发任何事件)。
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="1276" height="849" creationComplete="drawImage()">
<mx:Script>
<![CDATA[
import mx.controls.Alert;
import mx.utils.Base64Decoder;
private function loaderCompleteHandler(event:Event):void {
Alert.show("loader done");
}
private function errorHandler(e:IOErrorEvent):void {
Alert.show("error" + e.toString());
}
public function drawImage() : void
{
var b64png : String = "iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAABGdBTUEAALGPC/xhBQAAAAlwSFlzAAALEwAACxMBAJqcGAAAAAd0SU1FB9YGARc5KB0XV+IAAAAddEVYdENvbW1lbnQAQ3JlYXRlZCB3aXRoIFRoZSBHSU1Q72QlbgAAAF1JREFUGNO9zL0NglAAxPEfdLTs4BZM4DIO4C7OwQg2JoQ9LE1exdlYvBBeZ7jqch9//q1uH4TLzw4d6+ErXMMcXuHWxId3KOETnnXXV6MJpcq2MLaI97CER3N0vr4MkhoXe0rZigAAAABJRU5ErkJggg==";
var l : Loader = new Loader();
var decoder : Base64Decoder = new Base64Decoder();
decoder.decode(b64png);
var bytes : ByteArray = decoder.flush();
l.addEventListener(Event.COMPLETE, loaderCompleteHandler);
l.addEventListener(IOErrorEvent.IO_ERROR, errorHandler);
l.loadBytes(bytes);
}
]]>
</mx:Script>
<mx:Image x="10" y="10" width="155" height="118" id="image1"/>
</mx:Application>
有人可以告诉我我做错了吗?
答案 0 :(得分:2)
如果将图像数据解码为ByteArray,则可以使用Loader.loadBytes(byteArray)将其作为图像加载。
答案 1 :(得分:0)
您可以使用此方法加载图片:
var deco64:Base64Decoder = new Base64Decoder;
deco64.decode("base64StringWithTheImageData");
var arrBytes:ByteArray = deco64.toByteArray();
img.load(arrBytes);
希望这有帮助!
答案 2 :(得分:-1)
您可以将解码器返回的字节数组直接分配给图像的源属性。
<?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.utils.Base64Decoder;
private function init():void {
var b64png : String = "iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAABGdBTUEAALGPC/xhBQAAAAlwSFlzAAALEwAACxMBAJqcGAAAAAd0SU1FB9YGARc5KB0XV+IAAAAddEVYdENvbW1lbnQAQ3JlYXRlZCB3aXRoIFRoZSBHSU1Q72QlbgAAAF1JREFUGNO9zL0NglAAxPEfdLTs4BZM4DIO4C7OwQg2JoQ9LE1exdlYvBBeZ7jqch9//q1uH4TLzw4d6+ErXMMcXuHWxId3KOETnnXXV6MJpcq2MLaI97CER3N0vr4MkhoXe0rZigAAAABJRU5ErkJggg==";
var decoder : Base64Decoder = new Base64Decoder();
decoder.decode(b64png);
var bytes : ByteArray = decoder.flush();
img.source = bytes;
}
]]>
</mx:Script>
<mx:Image id="img" />
</mx:Application>