iOS_Back_2

Camera Feature: to touch screen to call the camera, and save image in photo lib

1. add K/V to ask for users auhthorization to camera usage and usage of image saving.

     Privacy - Camera Usage Description
     Privacy - Photo Lib Add Usage Description
   

ref: https://medium.com/彼得潘的-swift-ios-app-開發問題解答集/ios-10存取使用者私密資料都要加上usage-description-a01715e56491

2. code in ControllerView.

    //  ViewController.swift
    //  KatesCamera
    //
    //  Created by KatesAndroid on 2021/1/27.
    //
   
    import UIKit
   
    class ViewController: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate {
   
        override func viewDidLoad() {
            super.viewDidLoad()
            // Do any additional setup after loading the view.
        }
   
        override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
   
            let imgP = UIImagePickerController()
            imgP.sourceType = .camera
            imgP.delegate = self
            show(imgP, sender: self)
        }
   
        func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
            let img = info[UIImagePickerController.InfoKey.originalImage] as! UIImage
   
            UIImageWriteToSavedPhotosAlbum(img, nil, nil, nil)
            dismiss(animated: true, completion: nil)
        }
   
   
    }
   

   ref: https://stackoverflow.com/questions/41717115/how-to-make-uiimagepickercontroller-for-camera-and-photo-library-at-the-same-tim

3. run iPhone Simulator.

4. Reason for Exception Error occured.