停止的AVAudioPlayer

Question

這裏是我的代碼

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rying啓動和停止使用相同的按鈕AVAudioPlay（musicPlayer1是在頭）。現在，當我觸摸按鈕時，它不會播放任何內容。請幫助？

Answer 1

您每次創建一個新的AVAudioPlayer實例。你需要堅持對某個地方的對象的引用，並引用它。一個字段添加到您的視圖控制器類：

@private AVAudioPlayer *currentAudio; 

然後在此方法中，進行以下更改：

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