Question

since updating my Flash Player plugin from 10 to 10.1, I’m seeing a weird crash when accessing shared objects. Flex Builder’s debugger pops up and prints a stack trace like this:

undefined

 at flash.net::SharedObject$/getLocal()
 at my.code::MyClass$/load()[/my/path/to/my/MyClass.as:27]
    (...)

This happens when calling SharedObject.getLocal("someString") for the second time for the same string, though it doesn’t always crash. When using another browser on the same machine (not configured as the preferred debugging browser in Flex Builder), Flash Player remains silent. The code is wrapped in a try/catch(Error) block which does not catch this error. I’m using Flex SDK 3.5 and Flex Builder 3 on Mac OS X 10.6.3. Has anyone else seen this?

Thanks, Simon

Answer 1

Here’s a work around:

    package scolab.core
{
    import flash.net.SharedObject;

    /**
     * Flash 10.1 introduce a nasty bug that crash the FlashPlayer and the browser when a SharedObject is accessed consecutively
     * We work around this issue with a static accessor that make sure the SharedObject is accessed only once and kept in cache.
     * */
    public class SharedObjectManager
    { 
        private static var cache:Object = new Object()
        public static function getLocal(name:String, localPath:String = null, secure:Boolean = false):SharedObject {
            if (cache.hasOwnProperty(name+":"+localPath+":"+secure)) {
                return cache[name+":"+localPath+":"+secure]
            } else {
                cache[name+":"+localPath+":"+secure] = SharedObject.getLocal(name,localPath,secure)
            }
            return cache[name+":"+localPath+":"+secure]
        }
    }
}