在iphone sdk中播放声音?

下面是一个使用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];
}

这假设主包中有一个名为“click.caf”的文件。因为我经常播放这个声音,所以我会把它放在周围,以便以后播放,而不是释放它。

我写了一个简单的objective-c包装 AudioServicesPlaySystemSound 朋友们:

#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

生活 here . 有关其他声音选项,请参见 this question .

来源 : AudioServices - iPhone Developer Wiki

音频服务声音和设备音量控制器无关。即使手机处于静音模式,也会播放音频服务声音。这些声音只能通过 设置 -gt; 声音 -gt; 铃声和警报 .

自定义系统声音可以通过以下代码播放:

CFBundleRef mainbundle = CFBundleGetMainBundle();
CFURLRef soundFileURLRef = CFBundleCopyResourceURL(mainbundle, CFSTR("tap"), CFSTR("aif"), NULL);
AudioServicesCreateSystemSoundID(soundFileURLRef, &soundFileObject);

调用iphone中的振动

AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);

播放内置系统声音。

AudioServicesPlaySystemSound(1100);