Swift -使用照片框架选择时保持照片质量

import Photos

func selectPhoto() {
    let imagePicker = UIImagePickerController()
    imagePicker.sourceType = .photoLibrary
    imagePicker.delegate = self
    present(imagePicker, animated: true, completion: nil)
}

extension ViewController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        if let asset = info[.phAsset] as? PHAsset {
            let options = PHImageRequestOptions()
            options.deliveryMode = .highQualityFormat
            options.resizeMode = .exact
            
            PHImageManager.default().requestImage(for: asset, targetSize: CGSize(width: 1000, height: 1000), contentMode: .aspectFit, options: options) { (image, info) in
                // 处理获取到的照片
            }
        }
        
        picker.dismiss(animated: true, completion: nil)
    }
}