How do I add background music to my spritekit file - xcode

Question

Could someone give me a quick easy step by step to adding background m4a music once my app has loaded. It is a sprite kit Xcode file, and the music is in m4a format. Thanks

Answer 1

Try with this:
#import AVFoundation;
...
AVAudioPlayer * backgroundMusicPlayer;
NSError *error;
NSURL * backgroundMusicURL = [[NSBundle mainBundle] URLForResource:#"song" withExtension:#"m4a"];
backgroundMusicPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:backgroundMusicURL error:&error];
backgroundMusicPlayer.numberOfLoops = -1; //-1 = infinite loop
[backgroundMusicPlayer prepareToPlay];
[backgroundMusicPlayer play];
and to stop simply
[backgroundMusicPlayer stop];
note: I don't use SKAction to play background music because you can't stop it when you want

Answer 2

You can use AVAudioPlayer for this purpose:
In your .h:
#import <AVFoundation/AVFoundation.h>
and add the following to interface
AVAudioPlayer *player;
In .m, initialize player with audio oath url:
NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle]
pathForResource:#"bg_music"
ofType:#"mp3"]];
player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
player.numberOfLoops = -1;
and when you need to play the audio, you can call:
[player play];
Note:
"numberOfLoops" is the number of times that the sound will return to the beginning upon reaching the end.
A value of zero means to play the sound just once.
A value of one will result in playing the sound twice, and so on...
Any negative number will loop indefinitely until stopped.
Keep Coding................ :)