如何在 iPhone 应用程序中播放电影？

Question

我想在我的 iPhone 应用程序的开头添加一部电影。我看过教程，这是我想出的代码。为什么行不通呢。我什至不看电影。我使用以下代码从 ViewController 的 viewDidLoad 函数调用它：

NSString *path = [[NSBundle mainBundle] pathForResource:@"BTS Intro" ofType:@"mov"];
[self playMovieAtURL:[NSURL fileURLWithPath:path

-(void)playMovieAtURL:(NSURL *)theURL {
MPMoviePlayerController *thePlayer = [[MPMoviePlayerController alloc] initWithContentURL:theURL];
thePlayer.scalingMode = MPMovieScalingModeAspectFill;
thePlayer.controlStyle = MPMovieControlStyleNone;

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(myMovieFinishedCallback:) name:MPMoviePlayerPlaybackDidFinishNotification object:thePlayer];
[thePlayer play];
}

-(void)myMovieFinishedCallback:(NSNotification *)aNotification {
MPMoviePlayerController *thePlayer = [aNotification object];
[[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:thePlayer];
[thePlayer release];
}

Answer 1

您开始播放电影，但没有将 [thePlayer view] 添加到视图层次结构中，这就是您看不到任何内容的原因。看一下苹果文档中对此操作的描述：

当您将电影播放器​​的视图添加到应用程序的视图层次结构时，请确保正确调整框架的大小，如下所示：

MPMoviePlayerController *player =
        [[MPMoviePlayerController alloc] initWithContentURL: myURL];
[player.view setFrame: myView.bounds];  // player's frame must match parent's
[myView addSubview: player.view];
// ...
[player play];

MPMoviePlayerController 类参考