UIImagePickerController后退按鈕/取消按鈕不可見

Question

我用UIImagePickerController顯示了手機的圖庫，但是上面沒有后退/取消按鈕。 如何添加一個？

我所擁有的（在UIViewController內部）：

func openGallery() {
  let picker = UIImagePickerController()
  picker.allowsEditing = false
  picker.sourceType = .photoLibrary
  picker.mediaTypes =
    UIImagePickerController.availableMediaTypes(for: .photoLibrary)!
  present(picker, animated: true, completion: nil)
}

當我運行它時，我得到了圖片庫，但是頂部通常沒有取消按鈕。

Answer 1

實現UIImagePickerControllerDelegate , UINavigationControllerDelegate並創建一個變量以分配UIImagePickerController var imagePicker = UIImagePickerController()並設置imagePicker.delegate = self 。

func openGallary()
{
    imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
    imagePicker.allowsEditing = true
    self.present(imagePicker, animated: true, completion: nil)
}