Question

我有一个viewController，包含以下方法：

- (IBAction) playMovie {
    NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"test" ofType:@"m4v"]];

    MPMoviePlayerController *moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:url];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayBackDidFinish:)
                                       name:MPMoviePlayerPlaybackDidFinishNotification
                                       object:moviePlayer];

    moviePlayer.controlStyle = MPMovieControlStyleNone;
    moviePlayer.shouldAutoplay = YES;

    [self.view addSubview:moviePlayer.view];
    [moviePlayer setFullscreen:YES animated:YES];
}

由于错误，我无法编译代码：

未定义的符号：

  "_MPMoviePlayerPlaybackDidFinishNotification", referenced from:
      _MPMoviePlayerPlaybackDidFinishNotification$non_lazy_ptr in AnotherViewController.o
     (maybe you meant: _MPMoviePlayerPlaybackDidFinishNotification$non_lazy_ptr)
  "_OBJC_CLASS_$_MPMoviePlayerController", referenced from:
      objc-class-ref-to-MPMoviePlayerController in AnotherViewController.o
ld: symbol(s) not found
collect2: ld returned 1 exit status

这条消息对我没有意义。

我打算将此方法用作视图控制器的一部分。我是否必须为播放器创建单独的视图控制器，或者情况并非如此？

我在创建此项目时使用SDK 3.1.2但是playMovie方法已根据新的API规则完全重写。当前的SDK版本是4.0.1

Answer 1

您添加了MediaPlayer.framework框架？

iPhone SDK 4：奇怪的编译错误，MPMoviePlayerController

1 个答案: