在iOS应用程序中播放视频：有音频但没有图像

Question

我想要在我的 iPhone 应用程序中播放一段短视频。当我使用下面的代码时，我只能听到音频并看到 应用程序的常规视图。我希望视频在此视图之上播放。 对此我能做什么？

    NSBundle *bundle = [NSBundle mainBundle];
    NSString *moviePath = [bundle pathForResource:@"LEADER" ofType:@"mov"];
    NSURL  *movieURL = [[NSURL fileURLWithPath:moviePath] retain];
    MPMoviePlayerController *theMovie = [[MPMoviePlayerController alloc] initWithContentURL:movieURL];
    theMovie.scalingMode = MPMovieScalingModeAspectFill;
    [theMovie play];
    MPMoviePlayerViewController *moviePlayer = [[MPMoviePlayerViewController alloc] initWithContentURL:movieURL];
    [self presentMoviePlayerViewControllerAnimated:moviePlayer];

Answer 1

不要混淆 MPMoviePlayerController 和 MPMoviePlayerViewController。当您使用 MPMoviePlayerController 时，请像这样使用它（通常用于 iPad 上的嵌入式视频）：

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

当您使用 MPMoviePlayerViewController 时，然后使用 呈现视频>presentMoviePlayerViewControllerAnimated：（通常用于全屏视频）。

Answer 2

MPMoviePlayerController *player =
        [[MPMoviePlayerController alloc] initWithContentURL: myURL];
[player.view.frame = self.view.frame];
[self.view addSubview: player.view];
// ...
[player play];

Answer 3

对我有用的唯一魔法是

 - (void) playMovie {
    NSURL *url = [NSURL URLWithString: 
        @"http://www.example.com/video.mp4"];
    MPMoviePlayerController *controller = [[MPMoviePlayerController alloc] 
        initWithContentURL:url];

    self.mc = controller; //Super important
    controller.view.frame = self.view.bounds; //Set the size

    [self.view addSubview:controller.view]; //Show the view
    [controller play]; //Start playing
}

在头文件

@property (nonatomic,strong) MPMoviePlayerController* mc;

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