MPMoviePlayerController 仅在通用应用程序中引发错误答案

【问题标题】：MPMoviePlayerController throws errors ONLY in universal appMPMoviePlayerController 仅在通用应用程序中引发错误
【发布时间】：2010-10-12 21:50:49
【问题描述】：

我的应用在启动时会以全屏模式播放视频。从 3.0 到 4.1 一切正常。

但是，如果我为通用应用程序编译相同的代码，它可以在 iPad 上运行，但不能在 iPhone（模拟器）上运行。

有人解决了这个问题吗？

代码如下：

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]：无法识别的选择器发送到实例

0x7924470

即使我试图阻止这种情况......

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

...仍然抛出错误。

【问题讨论】：

标签： iphone ipad ios mpmovieplayercontroller universal

【解决方案1】：

几天前我遇到了同样的错误。只需将基础 sdk 从 3.2 更改为 4.1 希望对你有帮助

【讨论】：

是的，解决了它。谢谢你，马西奥！

【解决方案2】：

我还没有对该错误的解释。但这似乎可行（需要在旧设备上测试）：

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一开始就这样做了；）

【讨论】：