我正在使用 Java + Flex 做一个项目。我创建了 Java 类并使用 Flex 远程对象来调用该方法。当我在 mxml 中编写所有代码时,它运行良好。但是当我将脚本包装在 as 文件中时,有些奇怪。我需要在 Flex 按钮上单击两次才能获得远程对象返回的结果。我认为我的 as 文件有问题。
下面是我的 MXML:
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
minWidth="500" minHeight="600">
<fx:Declarations>
<mx:RemoteObject id="Control" destination="Control" showBusyCursor="true" />
</fx:Declarations>
<fx:Script>
<![CDATA[
import com.wntime.ControlUtil;
import mx.rpc.events.ResultEvent;
private var resultOfCmd:String;
private var cmdStr:String;
private var ct:ControlUtil = new ControlUtil();
/* invoke as method */
private function test():void
{
cmdStr = cmdTxt.text;
resultOfCmd = ct.exec(cmdStr);
cmdConsole.text = resultOfCmd;
}
/* */
private function exec():void{
cmdStr = cmdTxt.text;
Control.execCmd(cmdStr);
Control.addEventListener(ResultEvent.RESULT,execCmd_clickHandler);
}
private function execCmd_clickHandler(event:ResultEvent):void
{
cmdConsole.text = event.result.toString();
}
private function clearCmdConsole():void
{
cmdConsole.text = "";
}
]]>
</fx:Script>
<s:Panel id="CmdPanel" x="70" y="50" width="501" height="350" title="Command Execute Panel">
<s:RichText x="20" y="33" fontSize="14" text="Cmd:"/>
<s:TextInput id="cmdTxt" x="60" y="30" width="239"/>
<s:Button id="execCmd" x="312" y="30" width="68" label="execute" click="exec()"/>
<s:Button x="400" y="30" label="CmdTest" click="test()"/>
<s:TextArea id="cmdConsole" x="20" y="85" width="450" editable="false"/>
<s:Button x="400" y="250" label="clear" click="clearCmdConsole()"/>
</s:Panel>
</s:Application>
这是名为 ControlUtil 的 as 文件:
package com.wntime{
import mx.rpc.events.FaultEvent;
import mx.rpc.events.ResultEvent;
import mx.rpc.remoting.RemoteObject;
public class ControlUtil
{
private var cmd:String = null;
private var result:String = null;
private var roControl:RemoteObject = new RemoteObject();
public function ControlUtil()
{
roControl.destination = "Control";
}
public function exec(_cmd:String):String{
this.cmd = _cmd;
roControl.execCmd(cmd);
roControl.addEventListener(FaultEvent.FAULT, execCmd);
roControl.addEventListener(ResultEvent.RESULT, execCmd);
return result;
}
public function execCmd(event:ResultEvent):void
{
setResult(event.result.toString());
}
public function setResult(_result:String):void
{
this.result = _result;
}
}
}
如果我单击执行按钮。结果将直接显示在控制台(文本区域)中。但我需要在 CmdTest 按钮上单击两次才能将结果显示在控制台中。
请帮帮我。在此先感谢。