swift - uiimagepicker 为我的 imageview 选择相同的图像

Question

晚上好，

我有三个框，用户可以在其中从手机中选择图像。我试图允许用户上传多张图片，每个框中一张，有点像 Tinder 或 Instagram。当我选择图像时，由于某种原因，它只是选择多个相同的图像，而不是选择三个单独的图像。有没有办法单独挑选图像？

扩展 newPostViewController:UIImagePickerControllerDelegate、UINavigationControllerDelegate {

@objc func handleSelectJobImageView() {
    let picker = UIImagePickerController()

    picker.delegate = self
    picker.allowsEditing = true

    present(picker, animated: true, completion: nil)
}
@objc func handleSelectJobImageView2() {
    let picker2 = UIImagePickerController()

    picker2.delegate = self
    picker2.allowsEditing = true

    present(picker2, animated: true, completion: nil)
}
@objc func handleSelectJobImageView3() {
    let picker3 = UIImagePickerController()

    picker3.delegate = self
    picker3.allowsEditing = true

    present(picker3, animated: true, completion: nil)
}

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {

    var selectedImageFromPicker: UIImage?
    if let editedImage = info["UIImagePickerControllerEditedImage"] as? UIImage {
        selectedImageFromPicker = editedImage
    } else if let originalImage = info["UIImagePickerControllerOriginalImage"] as? UIImage {
        selectedImageFromPicker = originalImage
        if let selectedImage = selectedImageFromPicker{
            JobImageView.image = selectedImage
             dismiss(animated: true, completion: nil)
        }
    }

    var selectedImageFromPicker2: UIImage?
    if let editedImage2 = info["UIImagePickerControllerEditedImage"] as? UIImage {
        selectedImageFromPicker2 = editedImage2
    } else if let originalImage2 = info["UIImagePickerControllerOriginalImage"] as? UIImage {
        selectedImageFromPicker2 = originalImage2
        if let selectedImage2 = selectedImageFromPicker2{
            JobImageView2.image = selectedImage2
             dismiss(animated: true, completion: nil)
        }
    }
    var selectedImageFromPicker3: UIImage?
    if let editedImage3 = info["UIImagePickerControllerEditedImage"] as? UIImage {
        selectedImageFromPicker3 = editedImage3
    } else if let originalImage3 = info["UIImagePickerControllerOriginalImage"] as? UIImage {
        selectedImageFromPicker3 = originalImage3
        if let selectedImage3 = selectedImageFromPicker3{
            JobImageView3.image = selectedImage3
             dismiss(animated: true, completion: nil)
        }
    }
}

func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
    print("canceled picker")
    dismiss(animated: true, completion: nil)
}
}

Answer 1

imagePickerController(_ picker: , didFinishPickingMediaWithInfo info:) 仅从 UIImagePicker 返回 1 个图像。因此，上面的逻辑是错误的，因为 selectedImageFromPicker、selectedImageFromPicker2 和 selectedImageFromPicker3 引用的是 imagePicker 中的同一图像。这就是为什么您会看到 3 个相同的图像。

我认为没有办法使用基本图像选择器来选择多个图像。您可以做的是将所有图像加载到 collectionView 中，并让用户选择单元格。或者您始终可以使用各种第三方库。