Swift中如何進行相機和相冊的調用

在Swift中，可以使用UIImagePickerController類來調用相機和相冊。以下是一個簡單的示例代碼，演示了如何調用相機和相冊：

import UIKit

class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    @IBAction func takePhoto(_ sender: UIButton) {
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = .camera
        present(imagePicker, animated: true, completion: nil)
    }

    @IBAction func choosePhoto(_ sender: UIButton) {
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = .photoLibrary
        present(imagePicker, animated: true, completion: nil)
    }

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        if let pickedImage = info[UIImagePickerController.InfoKey.originalImage] as? UIImage {
            // 在此處處理選擇的照片
        }
        dismiss(animated: true, completion: nil)
    }

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

}

在這個示例中，我們創建了一個ViewController類，并實現了UIImagePickerControllerDelegate和UINavigationControllerDelegate協議。我們在takePhoto和choosePhoto方法中分別調用相機和相冊。在imagePickerController和imagePickerControllerDidCancel方法中，我們處理選取照片和取消選取照片的邏輯。