Question

我的应用在应用启动时以全屏模式播放视频。从3.0到4.1，一切都完美无缺。

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，但不再适用于iPhone（模拟器）。

有没有人解决过这个问题？

以下是代码：

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 view]：无法识别的选择器发送到实例

0x7924470

即使我试图阻止这样......

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

......仍然会抛出错误。

Answer 1

我还没有解释错误。但这似乎有效（需要在旧设备上进行测试）：

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];
    }

如果我只记得为什么我在第一时间以另一种方式做到了;）

Answer 2

我前几天得到了同样的错误。它只需要将基本sdk从3.2更改为4.1 希望它有所帮助

MPMoviePlayerController仅在通用应用程序中引发错误

2 个答案: