ios - 选择图像后如何执行 Segue

Question

我想在用户选择图像(通过单击 ImageView )后立即执行 segue。

我已经检查了 segue id 并成功连接了两个 View Controller 。

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
        // Executed when we select an image from the photo library.
        if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {

            // Sets the image to the image view (not really relevant because
            // we push the user to the DetailVC, but let's leave it).
            self.imageView.image = image

            // Closing the image picker.
            self.dismiss(animated: true, completion: nil)

            // Performing segue (It doesn't perform!).
            print("It gets to this point, but doesn't perform.")
            self.performSegue(withIdentifier: "showDetail", sender: nil)
        }
    }

程序将图像设置为 ImageView ，在“执行”函数之后获取打印语句，但不执行转场。

Answer 1

在 Storyboard中选择具有 ImageView 的 View Controller ，在顶部有黄色圆圈右键单击从那里拖动到您要转至的 View Controller 并为其标识符指定一个 ID =“segueID”然后像这样编辑你的 didfinishpicking 方法

if let img = info[.originalImage] as? uiimage{
myimageview.image = img
dismiss(animated: true) {
self.performSegue(withIdentifier: “segueID”, sender: self)}}