Static method variable issue

Question

I created class for handling sounds. But I've problem to stop sound? I can't send variable from playSound to stopSound AudioServicesDisposeSystemSoundID(soundID). How to handle this? I really don't want instantiate it or I've to?

@implementation SoundPlayer
+(void)playSound:(NSString *)filename ofType:(NSString *)extension {
    SystemSoundID soundID;
    NSString *soundFile = [[NSBundle mainBundle] pathForResource:filename ofType:extension];
    AudioServicesCreateSystemSoundID((__bridge CFURLRef)[NSURL fileURLWithPath:soundFile], &soundID);
    AudioServicesPlaySystemSound(soundID); // error - soundID is undeclared
}

+(void)stopSound
{
    AudioServicesDisposeSystemSoundID(soundID);
}

@end

Richard D · Accepted Answer · 2012-11-22 12:21:32Z

1

You'll either have to pass the id to stopSound (the same as when you play sound), or else if your audio player only plays 1 sound at a time, store the soundID as a static param on the class when you play.

answered Nov 22, 2012 at 12:21

Richard D

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2 Comments

alexhajdu Over a year ago

and how can I declare static param?

Richard D Over a year ago

@interface TheClass : NSObject + (int)count; @end see: stackoverflow.com/questions/6035824/…

aknew · Accepted Answer · 2012-11-22 12:21:57Z

0

You can create soundID as ivar, something like:

@interface SoundPlayer(){
     SystemSoundID soundID;
}
@end

Other way use it as global variable

answered Nov 22, 2012 at 12:21

aknew

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1 Comment

alexhajdu Over a year ago

I tried it as a first option before posting to stackverflow. Instance variable accessed in class method.

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