dismissModalViewControllerAnimated关闭我的背景音乐

Question

当视图打开时，我有背景音乐，即使我切换到其他视图并再次返回到主视图，音乐也可以正常播放，背景音乐仍然可以正常播放。但是当我将后退按钮中的代码从

mainViewController *mainView =[[mainViewController alloc] initWithNibName:nil bundle:nil];
mainView.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
    [self presentModalViewController:mainView animated:YES]; // this will flip from right

至

[self dismissModalViewControllerAnimated:YES]; // this will flip back from left

当我翻转回到主菜单时，我的背景音乐没有播放。只是好奇为什么？如何修复它？出于某种原因，我将代码更改为self dismissModalViewControllerAnimated:是的，因为我希望从其他方式翻转视图。

当使用这个代码播放mainView时，我的背景音乐正在播放

    - (void)viewDidLoad
    {
        [super viewDidLoad];
        NSString *pathFile = [[NSBundle mainBundle] pathForResource:@"Start" ofType:@"mp3"];
        player = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:pathFile] error:NULL];
        [player play];
    }

如果视图发生更改，则停止

- (void) viewDidDisappear:(BOOL)animated
{
    [player stop];
}

Answer 1

用ViewDidApper方法启动你的播放器。希望能对你有所帮助

-(void)viewDidAppear:(BOOL)animated
{
NSString *pathFile = [[NSBundle mainBundle] pathForResource:@"Start" ofType:@"mp3"];
    player = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:pathFile] error:NULL];
    [player play];
[super viewDidAppear:YES];
}