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我试图编译gui/flex/songs.mxml
在第四版的布鲁斯Eckel的思考Java书,并得到与Flex 3.4编译错误。mx:MediaPlayback Flex标签
这里是实例的简化版本,让同样的错误:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application
xmlns:mx="http://www.adobe.com/2006/mxml"
backgroundColor="#B9CAD2">
<mx:MediaPlayback id="songPlayer"
contentPath=""
mediaType="MP3"
height="70"
width="230"
controllerPolicy="on"
autoPlay="false"
visible="false" />
</mx:Application>
这里是调用和错误:
>mxmlc.exe songs.mxml
Loading configuration file C:\javaTools\flex_sdk_3.4\frameworks\flex-config.xml
C:\songs.mxml(5):
Error: Could not resolve <mx:MediaPlayback> to a component implementation.
<mx:MediaPlayback id="songPlayer"
我在做什么错在这里?