Question

当视图打开时，我有背景音乐，即使我将视图切换到其他视图并再次返回主视图，音乐开始完美播放也没有错误，背景音乐仍然没有问题。但是当我从后退按钮更改我的代码时

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

到

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

当翻到主菜单时，我的背景音乐没有播放。只是好奇为什么？怎么解决？由于某些原因我将代码更改为[self dismissModalViewControllerAnimated：YES];因为我希望我的观点从其他方式转回来。

当使用此代码显示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];
    }

如果视图发生变化则停止

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

Answer 1

在ViewDidAppear方法中启动播放器。希望它能帮到你

-(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];
}

dismissModalViewControllerAnimated关闭我的背景音乐

1 个答案: