ios - WatchKit WKInterfaceMovie fatal error : unexpectedly found nil while unwrapping an Optional value

Question

import WatchKit
import Foundation


class InterfaceController: WKInterfaceController {

let video = NSBundle.mainBundle().URLForResource("video", withExtension: "mp4")

@IBOutlet var videoShown: WKInterfaceMovie!

override func awakeWithContext(context: AnyObject?) {
    super.awakeWithContext(context)

    // Configure interface objects here.
    videoShown.setMovieURL(video!)
}

override func willActivate() {
    // This method is called when watch view controller is about to be visible to user
    super.willActivate()
}

override func didDeactivate() {
    // This method is called when watch view controller is no longer visible
    super.didDeactivate()
}

}

我的代码如上所示，我尝试使用 WKInterfaceMovie 在 WatchKit 应用程序上播放位于 XCode 资源文件夹中的视频，但在应用程序加载时出现此错误:

fatal error: unexpectedly found nil while unwrapping an Optional value

Answer 1

问题可能出在您的视频位置。将文件复制到“WatchKit Extension”文件夹中，而不是复制到 Assets 文件夹中。