所以现在我正在尝试让 Collection View 单元格使用照片库来更新照片。这是我的代码:
import UIKit
class viewCellVC: UICollectionViewCell, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
@IBOutlet var bookImage: UIImageView!
@IBAction func addImage(_ sender: Any) {
let imagePicker = UIImagePickerController()
imagePicker.delegate = self
imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
imagePicker.allowsEditing = false
self.window?.rootViewController?.present(imagePicker, animated: true, completion: nil)
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
picker.dismiss(animated: true, completion: nil)
}
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
let image = info[UIImagePickerControllerOriginalImage] as! UIImage
bookImage.image = image
picker.dismiss(animated: true, completion: nil)
}
}
但是，当我尝试运行代码并更新图片时，模拟器无法打开照片库，而是收到以下错误消息(没有结束应用程序，只是无法运行照片库):
2017-08-07 21:35:31.709183-0500 ChuBookElf[2817:66569] Warning: Attempt to present <UIImagePickerController: 0x7f907e0bf800> on <ChuBookElf.ViewController: 0x7f907de072c0> whose view is not in the window hierarchy!
有人可以告诉我我做错了什么吗？我已经研究这个几个小时了。
For Reference, here is what the collection view cell looks like
最佳答案
对于初学者，您将在 UICollectionViewCell 中创建 imagePicker。
您应该在包含上述 UICollectionView 以及委托(delegate)方法的 ViewController 中创建 imagePicker。然后，在 didFinishPickingMediaWithInfo 中，将所选图像设置为适当的 collectionViewCell 并重新加载您的 collectionView
关于ios - 尝试在 UICollectionViewCell 类上使用照片库，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45558435/