转到另一个视图控制器（iOS）时声音不播放

Question

On “back to menu” button press there is a sound that should be played, but the sound is not playing because of the navigation to the main view controller. I tried doing this so it waits for the sound before going back, but it doesn't work, what should I do?

if(appDelegate.disabledSoundEffects==0)
[self performSelectorOnMainThread:@selector(playButtonSound)
  withObject:NULL waitUntilDone:true];

playButtonSound is the method that plays the sound obviously that's the code for it in case I'm doing something wrong there

dispatch_queue_t dispatchQueue= dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);

dispatch_sync(dispatchQueue, ^(void){

    NSBundle * mainBundle = [NSBundle mainBundle];

    NSString * filePath = [mainBundle pathForResource:@"clickSound"
                                               ofType:@"mp3"];

    NSData * fileData=[NSData dataWithContentsOfFile:filePath];

    NSError * error= nil;

    self.audioPlayer=[[AVAudioPlayer alloc] initWithData:fileData error:&error];

    if(self.audioPlayer!=nil)
        self.audioPlayer.delegate=self;

    [self.audioPlayer prepareToPlay];
    [self.audioPlayer play];
});

Answer 1

正如@Surjeet所说：“与其在类内分配AVAudioPlayer，不如在AppDelegate类中分配它，然后在appdelegate中创建一个方法，然后在任何类按钮单击时都调用该方法。这样您的声音将始终播放。”