在iPhone SDK中播放声音？

Question

有没有人使用可用于播放短音的AudioToolBox框架的片段？如果您与我和社区其他成员分享,我将不胜感激.我看过的其他任何地方的代码似乎都不太清楚.

谢谢!

Answer 1

以下是使用AVAudioPlayer的简单示例:

-(void)PlayClick
{
    NSURL* musicFile = [NSURL fileURLWithPath:[[NSBundle mainBundle] 
                                               pathForResource:@"click"
                                               ofType:@"caf"]];
    AVAudioPlayer *click = [[AVAudioPlayer alloc] initWithContentsOfURL:musicFile error:nil];
    [click play];
    [click release];
}

这假设主捆绑中有一个名为"click.caf"的文件.当我播放这个声音很多时,我实际上是把它放在后面播放而不是释放它.

Answer 2

我写了一个简单的Objective-C包装AudioServicesPlaySystemSound和朋友:

#import <AudioToolbox/AudioToolbox.h>

/*
    Trivial wrapper around system sound as provided
    by Audio Services. Don’t forget to add the Audio
    Toolbox framework.
*/

@interface Sound : NSObject
{
    SystemSoundID handle;
}

// Path is relative to the resources dir.
- (id) initWithPath: (NSString*) path;
- (void) play;

@end

@implementation Sound

- (id) initWithPath: (NSString*) path
{
    [super init];
    NSString *resourceDir = [[NSBundle mainBundle] resourcePath];
    NSString *fullPath = [resourceDir stringByAppendingPathComponent:path];
    NSURL *url = [NSURL fileURLWithPath:fullPath];

    OSStatus errcode = AudioServicesCreateSystemSoundID((CFURLRef) url, &handle);
    NSAssert1(errcode == 0, @"Failed to load sound: %@", path);
    return self;
}

- (void) dealloc
{
    AudioServicesDisposeSystemSoundID(handle);
    [super dealloc];
}

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

@end

住在这里.对于其他声音选项,请参阅此问题.