Question

首先我保存一个视频

 // MARK: - UIImagePickerControllerDelegate

    extension RecVidController: UIImagePickerControllerDelegate {
        func imagePickerController(_ picker: UIImagePickerController,
                                   didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

    UISaveVideoAtPathToSavedPhotosAlbum(url.path, self, #selector(video(_:didFinishSavingWithError:contextInfo:)), nil)

保存完成后，它就会出现在这里。...在这一点上，我想导航到另一个控制器...

    @objc func video(_ videoPath: String, didFinishSavingWithError error: Error?, contextInfo info: AnyObject) {

            let dwc = WordViewController(nibName:"WordViewController",bundle:nil)
            dwc.theString = "test"
            navigationController!.pushViewController(dwc, animated: true)


}

但是...

class WordViewController: UIViewController {

@IBOutlet weak var txtWordDef: UITextField!
var theString:String!

我的所有接口变量（例如txtWordDef）都为nil。...当我导航到它时。...我将所有这些类隔离为独立视图，因此我知道工作流程可以正常工作。我究竟做错了什么？谢谢

Answer 1

我认为您缺少在类theString中声明变量WordViewController

保存视频后无法导航到另一个控制器

1 个答案: