使用多个按钮播放多个 MP3 文件 - iPhone SDK - xCode答案

【问题标题】：Playing Multiple MP3 files with Multiple Buttons - iPhone SDK - xCode使用多个按钮播放多个 MP3 文件 - iPhone SDK - xCode
【发布时间】：2013-01-01 02:10:18
【问题描述】：

我正在为 Movie The ringer 编写一个小型音板应用程序，我是 iPhone SDK 的新手

我已使用以下代码将所有按钮链接到它们的 Mp3 文件，但是只有一些按钮播放它们的声音？

我检查了所有文件名，它们都与代码匹配：


- (IBAction)canWeBeAlone:(id)sender {
    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundfileURLRef;
    soundfileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"Can We Be Alone", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID (soundfileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);
}

- (IBAction)itsThreeAM:(id)sender {
    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundfileURLRef;
    soundfileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"Its 3AM", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID (soundfileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);
}

- (IBAction)iHaveSinned:(id)sender {
    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundfileURLRef;
    soundfileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"I Have Sinned", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID (soundfileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);
}

- (IBAction)mowMyLawn:(id)sender {
    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundfileURLRef;
    soundfileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"Mow My Lawn", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID (soundfileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);
}

- (IBAction)theyAreMyFriends:(id)sender {
    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundfileURLRef;
    soundfileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"They Are My Friends", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID (soundfileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);
}

- (IBAction)itsSteve:(id)sender {
    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundfileURLRef;
    soundfileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"Its Not Jeffy Its Steve", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID (soundfileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);
}

- (IBAction)itWasWrongOfMe:(id)sender {

    CFBundleRef mainBundle = CFBundleGetMainBundle();
    CFURLRef soundfileURLRef;
    soundfileURLRef = CFBundleCopyResourceURL(mainBundle, (CFStringRef) @"It Was Wrong of Me", CFSTR ("mp3"), NULL);
    UInt32 soundID;
    AudioServicesCreateSystemSoundID (soundfileURLRef, &soundID);
    AudioServicesPlaySystemSound(soundID);

}

任何帮助将不胜感激

【问题讨论】：

标签： iphone xcode sdk ios6

【解决方案1】：

我认为您应该使用 AVAudioPlayer 来播放 MP3 文件，而不是使用 AudioServicesPlaySystemSound。 AVAudioPlayer 支持“...同时播放多个声音，每个音频播放器一个声音，精确同步”。请参阅 AVAudioPlayer 类参考。这里还有一个项目链接，展示了如何使用 AVAudioPlayer：[http://www.techotopia.com/index.php/Playing_Audio_on_an_iPhone_using_AVAudioPlayer_(iOS_4)][1]

【讨论】：