Pausing and resuming a sound

Comments

No screen name said on Aug 14, 2007 at 10:54 AM :

This code does not work for me. I wrote

var snd:Sound = new Sound(new URLRequest("Karizma2.mp3"));
var channel:SoundChannel = snd.play();

var pausePosition:int = channel.position;

function stopSound(event:MouseEvent):void {
channel.stop();
}
audioOff_btn.addEventListener(MouseEvent.CLICK, stopSound);

function startSound(event:MouseEvent):void {
channel = snd.play(pausePosition);
}
audioOn_btn.addEventListener(MouseEvent.CLICK, startSound);

and found that it works fine BUT... the sound won't loop. If I add a position number and looping argument, the sound loops but then if I hit the start button without hitting the stop button I create what sounds like a second channel and then the stop button doesn't work. Surely there must be an easy fix.

gerry-39 said on Oct 4, 2007 at 10:29 AM :

I have the same problem.
Everytime you hit the play button, a new version of the song starts overtop of the other one???????

adbe_paul said on Oct 4, 2007 at 3:00 PM :

@gerry-39:
That's correct, it creates a new SoundChannel and plays the sound in that channel each time you call play().

To prevent that from happening, you can use the "channel" variable to keep track of whether a sound is currently playing. To do this, you could add this line of code in the stopSound() method, after the channel.stop() line:
channel = null;

And then in the startSound() method you would check whether channel is null before calling play(), by wrapping the current line in an if statement like this:
if (channel == null)
{
channel = snd.play(pausePosition);
}

jagheera nex said on Feb 21, 2008 at 1:48 AM :

i tryed everything and it still doesn't work.

heres my code(its flawless):

var snd:Sound = new Sound(new URLRequest("http://www.fileden.com/files/2007/12/1/1619416/Drowning%20Pool%20-%20Bodies.mp3"));
var channel:SoundChannel = snd.play(0, 1);
SoundMixer.soundTransform = new SoundTransform(1, 0);
StopBTN.enabled = true;

function stopSound(event:MouseEvent):void {
var pausePosition:int = channel.position;
channel.stop();
channel = null;
StopBTN.emphasized = true;
StopBTN.label = "Play";
StopBTN.useHandCursor = true;
StopBTN.addEventListener(MouseEvent.CLICK, playSound);
StopBTN.removeEventListener(MouseEvent.CLICK, stopSound);
}

function playSound(event:MouseEvent):void {
if (channel == null){
channel = snd.play(pausePosition);
}
StopBTN.label = "Stop";
StopBTN.addEventListener(MouseEvent.CLICK, stopSound);
StopBTN.removeEventListener(MouseEvent.CLICK, playSound);
}
StopBTN.addEventListener(MouseEvent.CLICK, stopSound);


whats wrong with it?

No screen name said on Mar 13, 2008 at 4:41 PM :

The problem is with the declaration of the pausePosition var, it's initial setting, and its scope.

Try this:

//Declare the pausePosition outside the function and give it no value
var pausePosition:int;

function stopSound(event:MouseEvent):void {
//NOW give the pausePosition a value (the channel.position)
pausePosition = channel.position;

//Now when you access the pausePosition in the playSound function
//it will be scoped correctly AND have the correct value. This example was
//written in a rather untested manner.

channel.stop();
channel = null;
}




Hope this helps.