How to stop a audio SKAction?

Question

Goal: I want to present a new scene:

[self.scene.view presentScene:level2 transition:reveal];

and end the current background music in orde

Answer 1

You can't stop audio from playing when run from SKAction. You will need another engine to run your background music.
Try AVAudioPlayer - it is really easy and straightforward to use. Something like this will work:

First import header and add new property to your scene or view controller:

#import 

@interface AudioPlayerViewController : UIViewController {

@property (strong, nonatomic) AVAudioPlayer *audioPlayer;

}

After this in viewDidLoad or in didMoveToView method of scene add following code:

- (void)viewDidLoad {
    [super viewDidLoad];

    NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/audiofile.mp3", [[NSBundle mainBundle] resourcePath]]];

    NSError *error;
    self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
    self.audioPlayer.numberOfLoops = -1;

    if (!self.audioPlayer)
        NSLog([error localizedDescription]);                
    else 
        [self.audioPlayer play];

}

Each time you need your music to stop, just call [self.audioPlayer stop];

When you need new music to play, put a new player into the property initialized with your new music piece.

Hope this helps.