how to play the audio after given period of time

i want to play the audio file after th开发者_运维知识库e given period of time set by user.

You could use an NSTimer for this purpose like Andy Suggests but it may just over complicate things in this particular situation. More simply, you could implement something like this:

- (void)playSound {
  [sound play];
}

- (void)someMethod {
  float delay = 2.0; // seconds
  [self performSelector:@selector(playSound) withObject:nil afterDelay:delay];
}

How about using the NSTimer class?