xml文件转二进制文件的AIR

游戏开发中,有很多XML可能是很大的,比如一个任务配置文件,可能就接近2M(当然全部文件放在一个XML里面本身就有问题,比较好的做法就是分等级分隔XML),这样就需要对XML进行压缩。之前把文件压成ZIP包,然后读取ZIP,但现在读取ZIP文件里面的内容,是很卡的,后面改成读取二进制的XML数据,这样感觉不会卡,速度也很快。

 

实现思路也比较简单,使用二进制读取文件,然后调用保存。

<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"
width="900" height="350"
creationComplete="init()"
alwaysInFront="false">

<mx:Script>
<![CDATA[
import mx.controls.Alert;

private var filePath:String;
private var fileBytes:ByteArray;

private function init():void
{
var funArr:Array = [];

this.showStatusBar = true;
this.status = "Copyright©2012 meteoric_cry.net. Powered by Meteoric_cry";

bindBtnsEvent();
}

private function showTopHandler():void
{
if (this.stage.nativeWindow.alwaysInFront)
{
this.stage.nativeWindow.alwaysInFront=false;
showTopBtn.label="前端显示";
}
else
{
this.stage.nativeWindow.alwaysInFront=true;
showTopBtn.label="√前端显示";
}
}

private function bindBtnsEvent():void
{
selectBtn.addEventListener(MouseEvent.CLICK, onSelectHandler);
compressBtn.addEventListener(MouseEvent.CLICK, onCompressHandler);
saveBtn.addEventListener(MouseEvent.CLICK, onSaveHandler);
}

private function getTypeFilter():FileFilter
{
var str:String = "*.xml;";

var filter:FileFilter = new FileFilter("XML("+str+")", str);

return filter;
}

private function onSelectHandler(evt:MouseEvent):void
{
var file:File = new File();
file.addEventListener(Event.SELECT, selectFileCallback);
file.browseForOpen("请选择一个文件", [getTypeFilter()]);
}

private function selectFileCallback(evt:Event):void
{
clear();

var file:File = File(evt.target);
file.removeEventListener(Event.SELECT, selectFileCallback);

filePath = file.nativePath;

xmlPathIpt.htmlText = filePath;
}

private function clear():void
{
xmlPathIpt.htmlText = "";

filePath = null;
fileBytes = null;
}

private function onCompressHandler(evt:MouseEvent):void
{
if (filePath)
{
var file:File = new File(filePath);

if (file.isDirectory == false && file.exists)
{
var fs:FileStream = new FileStream();
fileBytes = new ByteArray();

fs.open(file, FileMode.READ);
fs.position = 0;
fs.readBytes(fileBytes, 0, fs.bytesAvailable);
fs.close();

fileBytes.compress();

Alert.show('文件压缩成功', '温馨提示', Alert.OK);
}
else
{
Alert.show(filePath + "不是一个正确的文件路径", '温馨提示', Alert.OK);
}
}
else
{
Alert.show('请选择要压缩的文件', '温馨提示', Alert.OK);
}
}

private function onSaveHandler(evt:MouseEvent):void
{
if (fileBytes)
{
var fileName:String = new File(filePath).name.replace(/\.xml/, '');

new FileReference().save(fileBytes, fileName + ".swf");

Alert.show("文件" + fileName + ".swf保存成功", '温馨提示', Alert.OK);
}
else
{
Alert.show('请先选择文件并进行压缩', '温馨提示', Alert.OK);
}
}

]]>
</mx:Script>

<mx:Button label="前端显示" right="10" top="3" click="showTopHandler();" id="showTopBtn"/>

<mx:HBox width="100%" horizontalScrollPolicy="off" verticalScrollPolicy="off"
paddingTop="100" paddingLeft="50" paddingRight="10" paddingBottom="10"
horizontalGap="0" verticalAlign="middle">

<mx:Label text="请选择要进行压缩的文件:" />
<mx:TextInput id="xmlPathIpt" width="400" editable="false" paddingLeft="2" paddingRight="2" />

<mx:HBox width="100%" paddingLeft="20">
<mx:Button id="selectBtn" label="选择文件" />
<mx:Button id="compressBtn" label="压缩文件" />
<mx:Button id="saveBtn" label="保存文件" />
</mx:HBox>

</mx:HBox>

</mx:WindowedApplication>

 

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posted @ 2012-11-26 21:02  meteoric_cry  阅读(3165)  评论(1编辑  收藏  举报