Flex 4 – FlexGlobals.topLevelApplication
在Flex 3读取HTML页面的flashvars的变量需要使用Application.application，在Flex 4 SDK里使用FlexGlobals.topLevelApplication代替了Application.application。Flex 4已经使用swfobject了：
<script type="text/javascript"> var swfVersionStr = "10.0.0"; var xiSwfUrlStr = "playerProductInstall.swf"; var flashvars = {}; flashvars.firstname = "Nick"; flashvars.lastname = "Danger"; var params = {}; params.quality = "high"; params.bgcolor = "#ffffff"; params.allowscriptaccess = "sameDomain"; var attributes = {}; attributes.id = "TestProject"; attributes.name = "TestProject"; attributes.align = "middle"; swfobject.embedSWF( "FlashVarTest.swf", "flashContent", "100%", "100%", swfVersionStr, xiSwfUrlStr, flashvars, params, attributes); swfobject.createCSS("#flashContent", "display:block;text-align:left;"); </script>
读取flashvars中firstname和lastname变量的写法:
var first_name : String = FlexGlobals.topLevelApplication.parameters.firstname;var last_name : String = FlexGlobals.topLevelApplication.parameters.lastname;在Flash Builder 4里用Flex 4 SDK开发时，如果还使用了Application.application，则会有提示这是Flex 3 SDK的写法。
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