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我正在尝试允许用户将视频上传到那里的个人资料。用户可以从手机中选择视频，但在单击视频的选择按钮后，应用程序崩溃并且您收到一个致命错误：在展开可选值 (lldb) 时意外发现 nil。

这是我的代码：

var objMoviePlayerController: MPMoviePlayerController = MPMoviePlayerController()
var urlVideo :NSURL = NSURL()

@IBOutlet weak var videoprofileView: UIImageView!
@IBOutlet weak var addvideoBtn: UIButton!

    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject])
{
    urlVideo = (info as NSDictionary).objectForKey(UIImagePickerControllerOriginalImage) as! NSURL
    self.dismissViewControllerAnimated(true, completion: nil)

    objMoviePlayerController = MPMoviePlayerController(contentURL: urlVideo)
    objMoviePlayerController.movieSourceType = MPMovieSourceType.Unknown
    objMoviePlayerController.view.frame = self.videoprofileView.bounds
    objMoviePlayerController.scalingMode = MPMovieScalingMode.AspectFill
    objMoviePlayerController.controlStyle = MPMovieControlStyle.Embedded
    objMoviePlayerController.shouldAutoplay = true

    videoprofileView.addSubview(objMoviePlayerController.view)

    objMoviePlayerController.prepareToPlay()
    objMoviePlayerController.play()
}

我从这行代码收到线程 1 exc_bad_instruction (code=exc_i386_invop subcode=0x0) 错误：

urlVideo = (info as NSDictionary).objectForKey(UIImagePickerControllerOriginalImage) as! NSURL

有什么办法有人可以帮忙吗？谢谢！

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