UIImagePicker

import UIKit

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate  {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }
    override func viewDidAppear(_ animated: Bool) {
        let picker = UIImagePickerController()
        picker.sourceType = .camera
        picker.delegate = self
        
        present(picker, animated: true, completion: nil)
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
        print(#function)
        // print(info[UIImagePickerControllerMediaType]!)
        let image = info[UIImagePickerControllerOriginalImage] as! UIImage
        // 撮影した画像をカメラロールに保存
        UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil)
    }

    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
        print(#function)
    }
}

console　// なに?
This app has crashed because it attempted to access privacy-sensitive data without a usage description. The app’s Info.plist must contain an NSCameraUsageDescription key with a string value explaining to the user how the app uses this data.