How to pause before running another piece of code

[tackey123]

I am Trying to play an audio file then wait 2 seconds then go to a method. Right now I am using the sleep command but that stops the whole thread which makes the app crash. So I was wondering if anybody knew how to pause for a little while then go to a method.

here is where the audio and sleep are;

-(void)loop2 {
	NSString *path = [[NSBundle mainBundle] pathForResource:@"LOOP2" ofType:@"aif"];
	AVAudioPlayer* theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
	theAudio.delegate = self;
	[theAudio play];
	
    sleep(2);
	[self random];
	
}

And here is the method;

-(void)random {
//do something
}

PLEASE HELP! Thanks!

[dljeffery]

Well, you're right; you shouldn't be calling sleep. But that won't crash your iPhone app.

I would guess your crash is somewhere in your -random method, although it could be due to you not using AVAudioPlayer correctly... because what you describe as your intended program flow is not at all what the code you posted will do. AVAudioPlayer's -play method doesn't block; it returns immediately.

[Duncan C]

Originally Posted by tackey123

I am Trying to play an audio file then wait 2 seconds then go to a method. Right now I am using the sleep command but that stops the whole thread which makes the app crash. So I was wondering if anybody knew how to pause for a little while then go to a method.

here is where the audio and sleep are;

-(void)loop2 {
	NSString *path = [[NSBundle mainBundle] pathForResource:@"LOOP2" ofType:@"aif"];
	AVAudioPlayer* theAudio = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL];
	theAudio.delegate = self;
	[theAudio play];
	
    sleep(2);
	[self random];
	
}

And here is the method;

-(void)random {
//do something
}

PLEASE HELP! Thanks!

As the other poster said, the AVAudioPlayer class returns immediately when you start it playing.

You want to implement the method audioPlayerDidFinishPlaying:successfully: in your AVAudioPlayer delegate. That method will get called when the sound is finished playing.

In your audioPlayerDidFinishPlaying:successfully: method, you can use the method performSelector:withObject:afterDelay: to tell your control object to play the next sound. The performSelector:withObject:afterDelay: call returns immediately, and starts a timer that causes your method to fire after the specified time-span has elapsed. It saves you the work of creating a timer yourself.



Regards,

Duncan C
WareTo

[TapTouchClick]

an example:

[self performSelector:@selector(random) withObject:nil afterDelay:2];

HTH

[tackey123]

Thanks guys!

This is what worked for me;

NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:24 target:self selector:@selector(random) userInfo:nil repeats:NO];