as3 scanHardware() function making my app crash

Question

I am using ScanHardware function to get the updated Camera list. If plug in a Camera to my Mac mini, Camera length is being updated. If I plug out the Camera My app closes abruptly.

<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" 
                       xmlns:s="library://ns.adobe.com/flex/spark" 
                       xmlns:mx="library://ns.adobe.com/flex/mx"
                       height="280"
                       width="280"
                       creationComplete="test1()">
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
    <fx:Script>
        <![CDATA[

            import mx.controls.Alert;
            public var hardwareTimer:Timer;
            public function test1():void{
                hardwareTimer = new Timer(5000);
                hardwareTimer.addEventListener(TimerEvent.TIMER,refreshHardware);
                hardwareTimer.start();
            }
            public function refreshHardware(ev:TimerEvent):void{

                flash.media.scanHardware();
                Alert.show(Camera.names.length.toString());
            }
        ]]>
    </fx:Script>
</s:WindowedApplication>

If I use Camera.names after I unplug any Camera, My app is crashing.

How to solve the issue?

Displume

Your code works fine for me in windows 10. Try it in other machines, if it's working so maybe you have some problem in your machine ( AIR version, cam driver, ... ) ... – Topminnow

It is working fine on Windows, I have tried that. But it is not working on Mac. – Displume

Answer 1

Actionscript errors should not cause the app to crash. When an app crashes, it usually because it has attempted an illegal operation on the native level like writing to reserved/invalid memory. I would start by looking for a problem with the camera or USB. If you can reproduce the problem using a different brand of webcam, then you can rule out the camera hardware & driver. If you can reproduce the problem on another mac, then it is probably not the USB.

Holman