iphone - MPMoviePlayerController "Loading Movie..."

Question

我正在尝试在装有 iOS 4.1 的 iPhone 上播放资源文件夹中的视频文件。 MPMoviePlayerViewController 显示该 View ，但它只会随着事件指示器的旋转而永远显示“正在加载电影...”。任何人都知道这是什么原因？我试过各种应该在 iPhone 上运行的视频格式，每次都得到相同的结果。

电影播放器​​响应显示和隐藏控件等操作。

我的代码:

-(void) playVideoNamed:(NSString *)videoName
{
    // I get the path like this so the user can enter extension in the filename
    NSString *path = [NSString stringWithFormat:@"%@/%@", 
                      [[NSBundle mainBundle] resourcePath], videoName];
    NSLog(@"Path of video file: %@", path);

    RootViewController *rootController = [(DerpAppDelegate *)[[UIApplication sharedApplication] delegate] viewController];

    NSURL *url = [NSURL URLWithString:path];

    MPMoviePlayerViewController *vc = [[MPMoviePlayerViewController alloc] initWithContentURL:url];
    vc.moviePlayer.movieSourceType = MPMovieSourceTypeFile;

    [rootController presentMoviePlayerViewControllerAnimated:vc];
    [vc.moviePlayer prepareToPlay]; // Not sure about this... I've copied this code from various others that claims this works
    [vc.moviePlayer play];
} 

Answer 1

发现问题:

NSURL *url = [NSURL URLWithString:path];

必须替换为:

NSURL *url = [NSURL fileURLWithPath:path];

很难发现那个...