完成后更改状态

使用Flash Builder 4（4.1 flex）。尝试在我的功能完成运行后创建状态更改，这将更改屏幕以具有将关闭应用程序的“完成”按钮。我怎么能告诉空中应用这样做？
我发现这个：protected function setState（newState：String）：void for AS3但不能在flex 4上工作。它应该在文件数组完成后将状态更改为Finished。完成后更改状态

 private function initiate_download(event:MouseEvent):void 
     { 
      var filearray:Array = new Array(); 
      filearray[0]="00.jpg"; 
      filearray[1]="01.jpg"; 
      filearray[2]="02.jpg"; 
      for (var i:uint; i < filearray.length; i++) { 
       var remoteURL = "http://domain/" + filearray[i]; 
       var localURL = "C:/dir/" + filearray[i]; 
       downloadFile(remoteURL, localURL); 
      } 


      function downloadFile(url, filename) { 
       // Create the stream for the data request 
       var urlStream = new URLStream(); 

       // Used to initiate request for remote file 
       var request = new URLRequest(url); 

       // Create file stream 
       var fileStream = new FileStream(); 

       // Create a reference to a location on disk 
       var file = File.desktopDirectory.resolvePath(filename); 

       // Called as download progresses 
       var writeFile = function() 
       { 
        // Write to file 
        if (urlStream.bytesAvailable > 51200) 
        { 
         var dataBuffer = new ByteArray(); 
         urlStream.readBytes(dataBuffer, 0, urlStream.bytesAvailable); 
         fileStream.writeBytes(dataBuffer, 0, dataBuffer.length); 
        } 
        return true; 
       } 

       // Called when download completes 
       var finishWriteFile = function() 
       { 
        // Write to file 
        if(urlStream.bytesAvailable > 0) 
        { 
         var dataBuffer = new ByteArray(); 
         urlStream.readBytes(dataBuffer, 0, urlStream.bytesAvailable); 
         fileStream.writeBytes(dataBuffer, 0, dataBuffer.length); 
        } 

        // Close streams 
        fileStream.close(); 
        urlStream.close(); 

        return true; 
       } 

       // Initiate download 
       fileStream.openAsync(file, FileMode.WRITE); 
       urlStream.load(request); 

       // Add event listeners 
       urlStream.addEventListener(Event.COMPLETE, finishWriteFile); 
       urlStream.addEventListener(ProgressEvent.PROGRESS, writeFile); 
      } 
    ]]> 
</fx:Script> 
<fx:Declarations> 
    <!-- Place non-visual elements (e.g., services, value objects) here --> 
</fx:Declarations> 
<s:states> 
    <s:State name="Start"/> 
    <s:State name="Finished"/> 
</s:states> 
<mx:Image x="0" y="0" source="background.jpg"/> 
<s:Button x="85" y="85" includeIn="Start" label="Update" id="download" click="initiate_download(event)" color="#FFFFFF" fontSize="30"/> 
<s:Button x="131" y="85" includeIn="Finished" label="Finished" id="closer" click="close_window(event)" color="#FFFFFF" fontSize="30"/>

来源

2010-12-14 mubhcaeb

后您关闭FILESTREAM和URLStream可以更改状态做

this.currentState = "Finished"

和关闭按钮现在应该是可见的。

来源

2010-12-14 19:51:39 Luciano

谢谢，这是完全正确的！如果你把它放在流关闭之后，在数组的第一个被处理之后它就会改变。我不得不用大型电影文件来测试它。我将努力让它等到阵列末尾改变。 – mubhcaeb 2010-12-14 20:40:13

完成后更改状态

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