iPhone SDK AudioToolbox example

An AudioToolbox example. It plays a soundclip that is less than 30 seconds long.
In this AudioToolbox example, two methods are used. It's really simple!

1. Create an AudioService ID

AudioServiceCreateSystemSoundID(fileURL, soundID);

2. Play sound.

AudioServicePlaySystemSound(soundID)


// Code Fragment.

#import <UIKit/UIKit.h>
#import <AudioToolbox/AudioServices.h>

@interface Sound : NSObject
{
    SystemSoundID _soundID;
}
+(id)soundWithContentsOfFile:(NSString *)aPath;
-(id)initWithContentsOfFile:(NSString *)aPath;
-(void)play;

@end

Sound.m
#import "Sound.h"

@implementation Sound
+(id)soundWithContentsOfFile:(NSString *)aPath
{
    if(aPath)
    {
        return [[[Sound alloc]initWithContentsOfFile:aPath]autorelease];
    }
    return nil;
}

-(id)initWithContentsOfFile:(NSString *)aPath
{
    self = [super init];
    if(self != nil)
    {
        NSURL *aFileURL = [NSURL fileURLWithPath:aPath isDirectory:NO];
        if(aFileURL != nill)
        {
            SystemSoundID aSoundID;
            OSStatus error = AudioServicesCreateSystemSoundID((CFURLRef)aFileURL, &aSoundID);
            if(error == kAudioServicesNoError)
            {
                _soundID = aSoundID;
            }
            else
            {
                NSLog(@"Error %d loading sound at path : %@", error, aPath);
            }
        }
        else 
        {
            NSLog(@"NSURL is nil for path : %@", aPath);
            [self release], self = nil;
        }
    }
    return self;
}

-(void)play
{
    AudioServicesPlaySystemSound(_soundID);
}