as3corelib Tutorial:An Adobe AIR class that provides a log target for the Flex logging framework

January 7th, 2009

Ntt.cc

log-128x128 Part of the newest corelib 0.92.1, an Adobe AIR only class that provides a log target for the Flex logging framework, that logs files to a file on the user’s system.I think it’s useful when you want to write the logs into a specified file instead of the default one.

Download Full Project

Methods

FileTarget()

public function FileTarget(logFile:File = null)
Parameters
logFile:File (default = null)

clear()

public function clear():void
clear the log messages in the log file.

Properties

logURI:String[read-only]
public function get logURI():String

Return

return the URI of the log file.

Screenshot:

The following is full source code of FileTargetDemo.as:

Download: FileTargetDemo.as

package
{
import com.adobe.air.logging.FileTarget;
import flash.events.Event;
import flash.filesystem.File;
import mx.collections.ArrayCollection;
import mx.core.WindowedApplication;
import mx.logging.Log;
import mx.logging.LogEventLevel;
public class FileTargetDemo extends WindowedApplication
{
public function FileTargetDemo()
{
super();
}
[Bindable]
protected var myData:ArrayCollection;
[Bindable]
protected var fileTarget:FileTarget;
protected var logFilePath:String;
[Bindable]
protected var logContent:String;
protected function initLogging():void
{
logFilePath = File.applicationDirectory.nativePath + "\\"+ new Date().toLocaleDateString()+".txt";
var file:File = new File(logFilePath);
fileTarget = new FileTarget(file);
fileTarget.filters=["mx.rpc.*","mx.messaging.*"];
fileTarget.level = LogEventLevel.ALL;
fileTarget.includeDate = true;
fileTarget.includeTime = true;
fileTarget.includeCategory = true;
fileTarget.includeLevel = true;
Log.addTarget(fileTarget);
}
protected function showLog():void
{
var file:File = new File(logFilePath);
if( file.exists);
{
file.load();
file.addEventListener(Event.COMPLETE,fileLoadCompleteHandler);
}
}
private function fileLoadCompleteHandler(event:Event):void
{
logContent = String(event.currentTarget.data);
}
protected function clearLog():void
{
fileTarget.clear();
showLog();
}
protected function srv_ResultHandler(event:Event):void
{
myData = event.currentTarget.lastResult.data.result;
}
}
}