ActionScript 3.0 学习(八) AS3 简单的缓存功能实现之SharedObject类
2015-09-05 10:19
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程序运行时经常会遇到一些下次运行需要用到的参量,这是可以把这些数据写入文件,下次运行时再从文件中读出这些数据即可。更简单的方法则是应用缓存技术。以下程序在缓存中存储了一个变量值,每次运行后,该值都会在前一次的基础上增加10。
package
{
import flash.display.Sprite;
import flash.net.SharedObject;
import flash.net.SharedObjectFlushStatus;
import flash.text.TextField;
public class SharedObjectLearn extends Sprite
{
private var _outPut:TextField = new TextField();
private var _localNum:SharedObject = SharedObject.getLocal("LocalNum");
public function SharedObjectLearn()
{
if(_localNum.data.num == null)
{
_localNum.data.num = 10;
}
else if(_localNum.data.num <= 500)
{
_localNum.data.num += 10;
}
_outPut.text = "" + _localNum.data.num;
var inputStatus:String = _localNum.flush(100);
switch(inputStatus)
{
case SharedObjectFlushStatus.PENDING:
trace("Requesting permission to save object...\n");
break;
case SharedObjectFlushStatus.FLUSHED:
trace("Value flushed to disk.\n");
break;
}
addChild(_outPut);
}
}
}
package
{
import flash.display.Sprite;
import flash.net.SharedObject;
import flash.net.SharedObjectFlushStatus;
import flash.text.TextField;
public class SharedObjectLearn extends Sprite
{
private var _outPut:TextField = new TextField();
private var _localNum:SharedObject = SharedObject.getLocal("LocalNum");
public function SharedObjectLearn()
{
if(_localNum.data.num == null)
{
_localNum.data.num = 10;
}
else if(_localNum.data.num <= 500)
{
_localNum.data.num += 10;
}
_outPut.text = "" + _localNum.data.num;
var inputStatus:String = _localNum.flush(100);
switch(inputStatus)
{
case SharedObjectFlushStatus.PENDING:
trace("Requesting permission to save object...\n");
break;
case SharedObjectFlushStatus.FLUSHED:
trace("Value flushed to disk.\n");
break;
}
addChild(_outPut);
}
}
}
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