Prompting AVAudioPlayer to play based on a timer - objective-c

Question

I am trying to setup a stopwatch alarm that is enabled via UISwitch. I want the alarm to be triggered after an x amount of secs after the timer has started. I have an ivar int variable (timerCount) that holds the amount of secs that has passed and I want to play a sound based on that ivar. When the timer begins and I enable the switch I would hope that the player would fire at 10 secs, but that is not the case. I know the "if statement" is the culprit because when I remove it the AVPlayer will play the wav file when the switch is enabled. I just need another set of eyeballs to look at this and figure out what I missed.
Here is the code snippet:
- (IBAction)timerSound{
if (voiceSwitch.on){
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:#"horn"
ofType:#"wav"];
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath:soundFilePath];
player = [[AVAudioPlayer alloc] initWithContentsOfURL: fileURL error: nil];
if (timerCount == 10)
[self.player play];
}
else {
[self.player stop];
}
}

Answer 1

You are looking for playAt:.
Example based on yours –
- (IBAction)valueChanged:(id)sender {
UISwitch *aSwitch = (UISwitch*)sender;
if ( aSwitch.on ) {
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:#"horn"
ofType:#"wav"];
NSURL *fileURL = [NSURL fileURLWithPath:soundFilePath];
audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:fileURL
error:nil];
[audioPlayer playAtTime:(audioPlayer.deviceCurrentTime + 3)];
} else {
[audioPlayer stop];
}
}
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag {
[self.theSwitch setOn:NO animated:YES];
[player release];
}