该例子主要介绍如何对Android设备的文件进行读写。
源码
<?xmlversion="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/FLEX.html" title=flex>flex/spark" applicationDPI="160" applicationComplete="Init()">
<s:layout>
<s:VerticalLayout gap="3" paddingBottom="3" paddingLeft="3" paddingRight="3" paddingTop="3"/>
</s:layout>
<fx:Declarations>
<!-- 将非可视元素（例如服务、值对象）放在此处-->
</fx:Declarations>
<fx:Script>
<![CDATA[
private function Init():void
{
vars:String = "";
s+= "File.applicationDirectory : " +
File.applicationDirectory.nativePath + "\n\n";
s+= "File.applicationStorageDirectory : " +
File.applicationStorageDirectory.nativePath + "\n\n";
s+= "File.desktopDirectory:" +
File.desktopDirectory.nativePath + "\n\n";
s+= "File.documentsDirectory : " +
File.documentsDirectory.nativePath + "\n\n";
s+= "File.userDirectory : " +
File.userDirectory.nativePath + "\n\n";
Info.text = s;
}
private function ReadFile():void
{
varfile:File = File.applicationStorageDirectory.resolvePath("log.txt");
if(file.exists)
{
var fs:FileStream = new FileStream();
fs.open(file,FileMode.READ);
vars:String = "";
s+= "url:" +file.url + "\n\n";
s+= "path:" + file.nativePath + "\n\n";
s+= "读取：" + fs.readMultiByte(fs.bytesAvailable,"utf-8");
Info.text = s;
fs.close();
}
else
Info.text = "文件不存在！";
}
private function WriteFile():void
{
varfile:File = File.applicationStorageDirectory.resolvePath("log.txt");
var fs:FileStream = new FileStream();
fs.open(file,FileMode.WRITE);
var date:Date = new Date();
var s:String = "时间" + date.time;
Info.text = "写入：" + s;
fs.writeMultiByte(s, "utf-8");
fs.close();
}
private function Exit():void
{
NativeApplication.nativeApplication.exit();
}
]]>
</fx:Script>
<s:HGroup>
<s:Buttonlabel="读文件"click="ReadFile()"/>
<s:Buttonlabel="写文件"click="WriteFile()"/>
<s:Buttonlabel="退出"click="Exit()"/>
</s:HGroup>
<s:TextArea id="Info"width="100%" height="100%"/>
</s:Application>
效果图
