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what is best way to write dispatch events in this Service class function?

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kimcity

25 May, 2012 10:44 AM

I have the following function in a Service class

protected function writeToFile():void{
        var destinationFile:File = File.applicationStorageDirectory.resolvePath(_newPath);

        var fs:FileStream = new FileStream();

        fs.open(destinationFile, FileMode.WRITE);
        fs.writeBytes(_buffer, 0, _buffer.length);

        fs.close();         


    }

this Service class should dispatch a SuccessfulCreateLocalFileEvent when writeToFile is successful and UnsuccessfulCreateLocalFileEvent if writeToFile is unsuccessful

I know that FileStream functions open and writeBytes may throw IOError if there is any problems. And all these FileStream functions all have void as return types.

I believe I need try catch, but I am not entirely sure how to do so.

Please advise.

This question is replicated at http://codereview.stackexchange.com/questions/12061/add-events-disp... Experimenting which site has better answers for such a question.

1. 2 Posted by krasimir on 25 May, 2012 11:08 AM

   

   Hello,

   FileSteram class has its own events which are dispatched when the file operation is successful or not.
   http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/...

   Isn't it ok to use that.

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2. 3 Posted by kimcity on 26 May, 2012 02:05 AM

   

   Hi krasimir,

   you mean like this?

       protected function writeToFile():void{
           _destinationFile = File.applicationStorageDirectory.resolvePath(_newPath);
   
           var fs:FileStream = new FileStream();
   
           fs.open(_destinationFile, FileMode.WRITE);
           fs.writeBytes(_buffer, 0, _buffer.length);
   
           fs.addEventListener(Event.CLOSE, dispatchFileCreatedEvent);
   
           fs.close(); 
   
       }
   

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3. 4 Posted by krasimir on 26 May, 2012 03:33 PM

   

   Hi, yes. Exactly that thing.

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4. 5 Posted by kimcity on 26 May, 2012 06:41 PM

   

   Hi krasimir,

   thank you!

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5. kimcity closed this discussion on 26 May, 2012 06:41 PM.

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