停止 AVAudioPlayer

Question

这是我的代码

 NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:@"95" ofType:@"wav"];

NSError *activationError = nil;
NSError *audioPlayerInitError = nil;
[[AVAudioSession sharedInstance] setActive: YES error:&activationError];

NSURL *newURL = [NSURL fileURLWithPath:soundFilePath];
musicPlayer1 = [[AVAudioPlayer alloc] initWithContentsOfURL:newURL error:&audioPlayerInitError];

if (musicPlayer1) {
    [musicPlayer1 stop];
    [musicPlayer1 release];
    musicPlayer1 = nil;
}
else {

    [musicPlayer1 prepareToPlay];
    [musicPlayer1 setVolume:.8];
    [musicPlayer1 setNumberOfLoops:-1]; // -1 means play indefintely
    [musicPlayer1 setDelegate: self];
    [musicPlayer1 play];
}

}

我正在尝试使用相同的按钮启动和停止 AVAudioPlay（musicPlayer1 在标题中）。现在，当我触摸按钮时，它不会播放任何内容。请帮忙？

Answer 1

您每次都会创建一个新的 AVAudioPlayer 实例。您需要在某处保留对该对象的引用，然后再引用该对象。将字段添加到视图控制器类：

@private AVAudioPlayer *currentAudio;

然后在此方法中进行以下更改：

if (currentAudio) {
    [currentAudio stop];
    [currentAudio release];
    currentAudio = nil;
} else {
    // what you already have goes here
}