ios - 如果我在同一 View 上有两个 ImageView ，如何区分哪个 UIImagePickerController 调用 func didCancel？

Question

我在同一 View 上有两个 UIImageView(leftImageView 和 rightImageView)。我想知道哪个 UIImagePickerController 正在调用 imagePickerControllerDidCancel。是 leftImageView 还是右边那个？

这里是选择器按钮选择左侧或右侧图像的开关。

switch sender.tag {
    // left image
case 0:
    self.imageView = leftImage
default:
    self.imageView = rightImage
}

下面的函数能够知道哪个 ImageView 正在调用它。但是 didCancel 函数不会:

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

func imagePickerControllerDidCancel(_ picker: UIImagePickerController) { 
    // the rightImageView or the leftImageView calling the cancel?

    if (rightImageView){
        // print("the right image ")
    }

    picker.dismiss(animated: true, completion: nil)
}

Answer 1

您已经拥有所需的信息。检查 self.imageView:

if self.imageView === leftImageView {
    // it's the left image view
} else {
    // it's the right image view
}