Question

This is the AS3 part:

import flash.net.FileReference;
import flash.events.Event;
import flash.external.ExternalInterface;
import flash.system.Security;

Security.allowDomain( "*" );

// file reference:
var file:FileReference = new FileReference();
ExternalInterface.addCallback( "bFile" , choose );

function choose():void{
    ExternalInterface.call( "alert( 'browse' )" );
    file.browse();
}

HTML part:

<object width="1px" height="1px">
<param name="movie" value="./ftest/uploader.swf">
<embed width="1px" height="1px" allowscriptaccess="always" id="uploader" src="./ftest/uploader.swf">
</object>

JS part:

$( "#uploader" )[ 0 ].bFile();

UPDATE: – [ The action called via clicking on a button ]

$( "#uploader" )[ 0 ] returns the object (just as if I used getElementById).

When triggered, alert is thrown with “broswe” in it, therefore, I know choose() is called.

But it gets no further.

I get these lines in every browser’s console: Uncaught Error: Error calling method on NPObject.

Could you help me figure out what is wrong here?

Answer 1

Believe your problem is security related, the browse method must be called in direct response to a user interaction (KeyboardEvent or MouseEvent). Read the specific detailed section in the docs about this:
http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/net/FileReference.html#browse()

The part from the docs I’m referencing:

In Flash Player 10 and Flash Player 9 Update 5, you can only call this method successfully in response to a user event (for example, in an event handler for a mouse click or keypress event). Otherwise, calling this method results in Flash Player throwing an Error exception.