CODEWITHSUNDEEP
iphoneobjective-caudio
Jake Petroules
Jake Petroules

Reputation: 24190

Using AVAudioPlayer in a UIViewController

I have a UIViewController subclass for a game with an AVAudioPlayer to play a song in the background. In my viewDidLoad method, I have the following code:

[super viewDidLoad];

...

[NSTimer scheduledTimerWithInterval: 0.03 target: self selector: @selector(gameLoop) userInfo: nil repeats: YES];

NSString *path = @"path-to-song";
self->audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL: [NSURL fileURLWithPath: path] error: NULL];
audioPlayer.delegate = self;
audioPlayer.numberOfLoops = - 1;
[audioPlayer play];

gameLoop is a method which contains the core logic for the game. When I run the app on my testing device, the audio plays, but it appears to be frozen, and gameLoop doesn't run normally. If I remove all the AVAudioPlayer code, the game works fine otherwise. It seems like there's some threading issue here that I'm not aware of. Any ideas?

Upvotes: 1

Views: 918

Answers (2)

Thomas M
Thomas M

Reputation: 939

Try moving your AVAudioPlayer code into a method and running it in a background thread like so:

- (void)playSong:(NSURL*)atURL
{
   self->audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL: atURL error: NULL];
   audioPlayer.delegate = self;
   audioPlayer.numberOfLoops = - 1;
   [audioPlayer play];
}

- (void)viewDidLoad
{
   [super viewDidLoad];

   ...

   NSURL* url = [NSURL fileURLWithPath: @"path-to-song"]
   [self performSelectorInBackground: @selector(playSong:) withObject: url];
}

Upvotes: 2

Swastik
Swastik

Reputation: 2425

Remove timer repeats:Yes to repeats:NO.May be its the problem.Because your gameLoop method would be called after every 0.3 seconds

Upvotes: 0

Related Questions