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在图像视图中使用未解析的标识符

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我试图制作一个选择选择器，但我得到使用未解析的标识符'imageusr' . 我尝试更改目标成员资格，因此我得到了更多错误 . imageusr.image = image（这里显示错误）

Import UIkit class ViewController2: UIViewController {
 @IBOutlet weak var imageusr: UIImageView!
var imagepick = UIImagePickerController()


@IBAction func seleccionar(_ sender: Any) {
imagepick.sourceType = .photoLibrary
imagepick.allowsEditing = true
present(imagepick, animated: true, completion: nil)
}

override func viewDidLoad() {
    super.viewDidLoad()
imageusr.roundedImage()
    imagepick.delegate = (self as! UIImagePickerControllerDelegate & UINavigationControllerDelegate)
    // Do any additional setup after loading the view.
} here

enter extension  ViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate{
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    if let image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage{
         imageusr.image = image
    }
    dismiss(animated: true, completion: nil)
}

}

swift image

1 回答

  • 1

    看起来这是一个代码对齐问题， extension 应该在 class 之外声明

    import UIKit

class ViewController: UIViewController {
    @IBOutlet weak var imageusr: UIImageView!
    var imagepick = UIImagePickerController()

@IBAction func seleccionar(_ sender: Any) {
    imagepick.sourceType = .photoLibrary
    imagepick.allowsEditing = true
    present(imagepick, animated: true, completion: nil)
}

override func viewDidLoad() {
    super.viewDidLoad()
    imageusr.roundedImage()
    imagepick.delegate = self
    // Do any additional setup after loading the view.
    }
}


extension  ViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        if let image = info[UIImagePickerController.InfoKey.originalImage] as? UIImage{
            imageusr.image = image
        }
        dismiss(animated: true, completion: nil)
    }
}
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