ipad - MPMoviePlayerViewController 未出现

Question

我正在尝试为标题/启动屏幕加载一部小电影。但是，当我调用 presentMoviePlayerViewControllerAnimated 时，什么也没有发生。我已经确认该代码块正在执行，但用户无法感知到任何内容。

我的目标是 iPad，因此假设为 3.2。

如有任何帮助，我们将不胜感激。

- (void)viewDidLoad {
  [super viewDidLoad];

  NSString *path = [[NSBundle mainBundle] pathForResource:@"Intro" ofType:@"m4v" inDirectory:nil];
  NSURL *fileURL = [NSURL fileURLWithPath:path];
  MPMoviePlayerViewController *playerView = [[MPMoviePlayerViewController alloc] initWithContentURL:fileURL];
  [[NSNotificationCenter defaultCenter] addObserver:self selector: @selector(playbackDidFinish:) name:MPMoviePlayerPlaybackDidFinishNotification object:playerView.moviePlayer];
  [self presentMoviePlayerViewControllerAnimated:playerView];
  [playerView release];
}

- (void)playbackDidFinish:(NSNotification*)aNotification {
  MPMoviePlayerController *player = [aNotification object];
  [[NSNotificationCenter defaultCenter] removeObserver:self
                                                name:MPMoviePlayerPlaybackDidFinishNotification
                                              object:player];
  [player stop];
  [self dismissMoviePlayerViewControllerAnimated];
}

Answer 1

你应该放置这条线 [玩家 View 发布]； 后 这条线 [ self 解雇MoviePlayerViewControllerAnimated];