Swift 访问相机并保存 和 访问相册

1。在Info.plist添加以下字段：

<key>NSPhotoLibraryUsageDescription</key>

<string>访问相册</string>

<key>NSCameraUsageDescription</key>

<string>访问相机</string>

 

2.添加代理：

UIImagePickerControllerDelegate,UINavigationControllerDelegate（用于回调）

 

3.变量申明：

var pick : UIImagePickerController!

@IBOutlet weak var imageView: UIImageView!

 

4.访问相册

if UIImagePickerController.isSourceTypeAvailable(.photoLibrary){

            pick = UIImagePickerController()

            pick.delegate = self

            pick.sourceType = .photoLibrary

 

            self.present(pick, animated: true, completion: nil)

        }

       

        

5.访问相机

if UIImagePickerController.isSourceTypeAvailable(.camera){

            pick = UIImagePickerController()

            pick.delegate = self

            pick.sourceType = .camera

            self.present(pick, animated: true, completion: nil)

        }

 

 

6.实现代理的方法，完成的回调

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

        self.imageView.image = info[UIImagePickerControllerOriginalImage] as? UIImage

      　//保存到相册

　　　　　UIImageWriteToSavedPhotosAlbum(self.imageView.image!, self, nil, nil)

        

        self.dismiss(animated: true, completion: nil)

    }