Open local txt file in flash (as3)

[ 2009-03-22 22:33:44 | Author: liuhuan ]

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It might be impossible to open local file directly until Flash player 10's release. The "load" method of FileReference class provides us a way to open local file in bytearray.

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uploads/200903/22_224705_txt.swf

There are several ways to open txt file, depending on the encoding type. If you are opening a file with utf-8 encoding, you could use:

fileReference.data.readUTFBytes(fileReference.data.length)

Anyway, in most cases we used Chinese characters in our txt file. Then we might use the readMultiByte method with a "gb2312“ declaration.

fileReference.data.readMultiByte(fileReference.data.length,"gb2312")

Here is the full code:

import flash.text.*;
import flash.net.FileReference;

var tf:TextField = new TextField();
tf.width = 350
tf.height = 350
tf.multiline=true;
tf.border = true
addChild(tf);
var fileReference:FileReference = new FileReference();
var fileFilter:FileFilter=new FileFilter("Images","*.txt");
fileReference.addEventListener(Event.SELECT, onSelectFile);
fileReference.addEventListener(Event.COMPLETE,onFileComplete);
bBrowse.addEventListener(MouseEvent.MOUSE_DOWN, browseFile);

function onFileComplete(event:Event):void {
  tf.htmlText = "opening: "+fileReference.name+"<br>"
  var bytes:ByteArray=fileReference.data;
  var newtext:String=fileReference.data.readMultiByte(fileReference.data.length,"gb2312");
  //var newtext:String = fileReference.data.readUTFBytes(fileReference.data.length)
  tf.appendText(newtext);
}
function browseFile(e:MouseEvent) {
  fileReference.browse([fileFilter]);
}
function onSelectFile(event:Event):void {
  fileReference.load();
}

[Last Modified By liuhuan, at 2009-03-22 22:47:16]