Flex 支持 data uri 方案吗?
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,但似乎没有办法让 Flex 呈现这些图像。 我正在考虑 data uri 方案,但似乎不支持。
建议的解决方案
- 使用 Loader.LoadBytes
尝试过,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什么吗?
I wish to pass many small PNG files as base64 encoded URIs within an XML response, but there seems to be no way to make flex present these images. I was thinking of the data uri scheme, but it appears not to be supported.
Proposed solutions
- Use Loader.LoadBytes
Tried it and it doesn't seem to work (none of the events are triggered).
<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>
Can someone please tell me what I did wrong?
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如果将图像数据解码为 ByteArray,则可以使用 Loader.loadBytes(byteArray) 将其加载为图像。
If you decode the image data into a ByteArray then you can use Loader.loadBytes(byteArray) to load it as an image.
您可以使用以下内容来加载图像:
希望这有帮助!
You could use something this to load the image:
Hope this helps!
您可以将从解码器返回的字节数组直接分配给图像的源属性。
You can assign the byte array returned from the decoder directly to the image's source property.