MPMoviePlayerController 仅在通用应用程序中抛出错误

Question

我的应用程序启动时以全屏模式播放视频。从 3.0 到 4.1 一切都运行完美。

但是，如果我为通用应用程序编译相同的代码，它将在 iPad 上运行，但不再在 iPhone（模拟器）上运行。

有人解决这个问题了吗？

这是代码：

if ([self respondsToSelector:@selector(presentMoviePlayerViewControllerAnimated:)]) {
  videoPath = [[NSBundle mainBundle] pathForResource:@"portrait" ofType:@"mov"];
  videoURL = [NSURL fileURLWithPath:videoPath];

  MPMoviePlayerController *aMoviePlayerController = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];
  self.moviePlayerController = aMoviePlayerController;
  [aMoviePlayerController release];  

  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(startVideo:) name:MPMoviePlayerLoadStateDidChangeNotification object:nil];
  [moviePlayerController.view setFrame:self.view.bounds];
  [self.view addSubview:moviePlayerController.view];

  moviePlayerController.controlStyle = MPMovieControlStyleNone;
 } else {
  //OS < 3.2
  videoPath = [[NSBundle mainBundle] pathForResource:@"landscape" ofType:@"mov"];
  videoURL = [NSURL fileURLWithPath:videoPath];

  MPMoviePlayerController *aMoviePlayerController = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];
  self.moviePlayerController = aMoviePlayerController;
  [aMoviePlayerController release];

  moviePlayerController.movieControlMode = MPMovieControlModeHidden;
  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(startVideo:) name:MPMoviePlayerContentPreloadDidFinishNotification object:nil];
 }

这是错误：

-[MPMoviePlayerControllerOld 视图]：发送到实例的选择器无法识别

0x7924470

即使我尝试像这样阻止这种情况...

if ([moviePlayerController respondsToSelector:@selector(view)]) {
   [moviePlayerController.view setFrame:self.view.bounds];
  }

...仍然会抛出错误。

Answer 1

几天前我遇到了同样的错误。只需要将基础 sdk 从 3.2 更改为 4.1
希望有帮助

Answer 2

我还没有对该错误的解释。但这似乎有效（需要在较旧的设备上进行测试）：

if ([self respondsToSelector:@selector(presentMoviePlayerViewControllerAnimated:)]) {
        videoPath = [[NSBundle mainBundle] pathForResource:@"portrait" ofType:@"mov"];
        videoURL = [NSURL fileURLWithPath:videoPath];

        /* NEW */
        MPMoviePlayerViewController *aMoviePlayerViewController = [[MPMoviePlayerViewController alloc] initWithContentURL:videoURL];
        aMoviePlayerViewController.moviePlayer.view.frame = self.view.bounds;
        aMoviePlayerViewController.moviePlayer.controlStyle = MPMovieControlStyleNone;
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(startVideo:) name:MPMoviePlayerLoadStateDidChangeNotification object:nil];
        [aMoviePlayerViewController.moviePlayer play];
        [self.view addSubview:aMoviePlayerViewController.view];
        self.moviePlayerController = aMoviePlayerViewController;


    } else {
        //OS < 3.2
        videoPath = [[NSBundle mainBundle] pathForResource:@"landscape" ofType:@"mov"];
        videoURL = [NSURL fileURLWithPath:videoPath];

        MPMoviePlayerController *aMoviePlayerController = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];
        self.moviePlayerController = aMoviePlayerController;

        aMoviePlayerController.movieControlMode = MPMovieControlModeHidden;
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(startVideo:) name:MPMoviePlayerContentPreloadDidFinishNotification object:nil];

        [aMoviePlayerController release];
    }

如果我能记得为什么我首先以其他方式这样做就好了；）