拍摄照片并保存到Swift中的照片库中

Question

我有一个“拍照”按钮，按下该按钮可打开相机，拍照，然后选择“使用照片”，我希望将其保存到照片库中。

除了保存到库外，我无所不能。这是我必须打开相机的代码：

Answer 1

将下面的代码用于从照片库拍摄的图像并保存在照片库中。

Swift 3.1和4.0]版本的代码支持：

首先，我们必须在Project的。plist

文件中为权限进行设置：-

1）相机

<key>NSCameraUsageDescription</key>
<string>This app will use camera.</string>
2）图片库

<key>NSPhotoLibraryUsageDescription</key>
<string>You can select photos to attach to reports.</string>
3）保存到照片库

<key>NSPhotoLibraryAddUsageDescription</key>
<string>Please allow access to save photo in your photo library</string>
我们需要以源代码

类型打开。pilst文件，然后在-内添加permissions

---

之后

---

import UIKit

class ViewController: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate  {

    @IBOutlet weak var imageTake: UIImageView!

  var imagePicker: UIImagePickerController!
    override func viewDidLoad() {
        super.viewDidLoad()
    }

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

    //MARK: - Saving Image here
    @IBAction func save(_ sender: AnyObject) {
        UIImageWriteToSavedPhotosAlbum(imageTake.image!, self, #selector(image(_:didFinishSavingWithError:contextInfo:)), nil)
    }

    //MARK: - Add image to Library
    func image(_ image: UIImage, didFinishSavingWithError error: Error?, contextInfo: UnsafeRawPointer) {
        if let error = error {
            // we got back an error!
            let ac = UIAlertController(title: "Save error", message: error.localizedDescription, preferredStyle: .alert)
            ac.addAction(UIAlertAction(title: "OK", style: .default))
            present(ac, animated: true)
        } else {
            let ac = UIAlertController(title: "Saved!", message: "Your altered image has been saved to your photos.", preferredStyle: .alert)
            ac.addAction(UIAlertAction(title: "OK", style: .default))
            present(ac, animated: true)
        }
    }

    //MARK: - Done image capture here
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
         imagePicker.dismiss(animated: true, completion: nil)
        imageTake.image = info[UIImagePickerControllerOriginalImage] as? UIImage
    }

}

---

Swift 4.2代码更新-

 class ViewController: UIViewController, UINavigationControllerDelegate  {

    @IBOutlet weak var imageTake: UIImageView!
    var imagePicker: UIImagePickerController!

    enum ImageSource {
        case photoLibrary
        case camera
    }

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

    //MARK: - Take image
    @IBAction func takePhoto(_ sender: UIButton) {
        guard UIImagePickerController.isSourceTypeAvailable(.camera) else {
            selectImageFrom(.photoLibrary)
            return
        }
        selectImageFrom(.camera)
    }

    func selectImageFrom(_ source: ImageSource){
        imagePicker =  UIImagePickerController()
        imagePicker.delegate = self
        switch source {
        case .camera:
            imagePicker.sourceType = .camera
        case .photoLibrary:
            imagePicker.sourceType = .photoLibrary
        }
        present(imagePicker, animated: true, completion: nil)
    }

    //MARK: - Saving Image here
    @IBAction func save(_ sender: AnyObject) {
        guard let selectedImage = imageTake.image else {
            print("Image not found!")
            return
        }
        UIImageWriteToSavedPhotosAlbum(selectedImage, self, #selector(image(_:didFinishSavingWithError:contextInfo:)), nil)
    }

    //MARK: - Add image to Library
    @objc func image(_ image: UIImage, didFinishSavingWithError error: Error?, contextInfo: UnsafeRawPointer) {
        if let error = error {
            // we got back an error!
            showAlertWith(title: "Save error", message: error.localizedDescription)
        } else {
            showAlertWith(title: "Saved!", message: "Your image has been saved to your photos.")
        }
    }

    func showAlertWith(title: String, message: String){
        let ac = UIAlertController(title: title, message: message, preferredStyle: .alert)
        ac.addAction(UIAlertAction(title: "OK", style: .default))
        present(ac, animated: true)
    }
 }

 extension ViewController: UIImagePickerControllerDelegate{

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]){
        imagePicker.dismiss(animated: true, completion: nil)
        guard let selectedImage = info[.originalImage] as? UIImage else {
            print("Image not found!")
            return
        }
        imageTake.image = selectedImage
    }
}

Answer 2

Anand Nimje的答案已更新为Swift 4

Answer 3

在Swift 3.0

Answer 4

import UIKit

class photoPickerController: UIViewController,UINavigationControllerDelegate{

@IBOutlet weak var imageTake: UIImageView!

var imagePicker: UIImagePickerController!
override func viewDidLoad() {
    super.viewDidLoad()
}


@IBAction func takePhoto(_ sender: UIButton) {

    imagePicker =  UIImagePickerController()
    imagePicker.delegate = self
    imagePicker.sourceType = .camera
    present(imagePicker, animated: true, completion: nil)
}


@IBAction func saveToLibrary(_ sender: AnyObject) {
    UIImageWriteToSavedPhotosAlbum(imageTake.image!, self, #selector(image(_:didFinishSavingWithError:contextInfo:)), nil)
    }
}

extension photoPickerController :  UIImagePickerControllerDelegate  {

func image(_ image: UIImage, didFinishSavingWithError error: Error?, contextInfo: UnsafeRawPointer) {
    if let error = error {
        // we got back an error!
        let alert = UIAlertController(title: "Error", message: error.localizedDescription, preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "OK", style: .default))
        present(alert, animated: true)
    } else {
        let alert = UIAlertController(title: "Saved!", message: "Image saved successfully", preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "OK", style: .default))
        present(alert, animated: true)
    }
}

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    imagePicker.dismiss(animated: true, completion: nil)
    imageTake.image = info[UIImagePickerControllerOriginalImage] as? UIImage
    }
}

Answer 5

实际上您可以将其添加到您的代码中，它将保存：