导入UIImagePickerControllerDelegate并创建一个变量，以分配UIImagePickerController var imagePicker = UIImagePickerController()并设置imagePicker.delegate = self。
创建操作表以显示“相机”和“照片库”的选项。
对按钮的点击动作：

@IBAction func buttonOnClick(_ sender: UIButton)
{
    self.btnEdit.setTitleColor(UIColor.white, for: .normal)
    self.btnEdit.isUserInteractionEnabled = true
    
    let alert = UIAlertController(title: "Choose Image", message: nil, preferredStyle: .actionSheet)
    alert.addAction(UIAlertAction(title: "Camera", style: .default, handler: { _ in
        self.openCamera()
    }))
    
    alert.addAction(UIAlertAction(title: "Gallery", style: .default, handler: { _ in
        self.openGallary()
    }))
    
    alert.addAction(UIAlertAction.init(title: "Cancel", style: .cancel, handler: nil))
    
    /*If you want work actionsheet on ipad
    then you have to use popoverPresentationController to present the actionsheet,
    otherwise app will crash on iPad */
    switch UIDevice.current.userInterfaceIdiom {
    case .pad:
        alert.popoverPresentationController?.sourceView = sender
        alert.popoverPresentationController?.sourceRect = sender.bounds
        alert.popoverPresentationController?.permittedArrowDirections = .up
    default:
        break
    }
    
    self.present(alert, animated: true, completion: nil)
}

func openCamera()
    {
        if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerController.SourceType.camera))
        {
            imagePicker.sourceType = UIImagePickerController.SourceType.camera
            imagePicker.allowsEditing = true
            self.present(imagePicker, animated: true, completion: nil)
        }
        else
        {
            let alert  = UIAlertController(title: "Warning", message: "You don't have camera", preferredStyle: .alert)
            alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
            self.present(alert, animated: true, completion: nil)
        }
    }

    func openGallary()
    {
        imagePicker.sourceType = UIImagePickerController.SourceType.photoLibrary
        imagePicker.allowsEditing = true
        self.present(imagePicker, animated: true, completion: nil)
    }

下载Swift、SwiftUI的示例项目

雨燕5 +：

包含照相机与多媒体数据得操作表：

//MARK:- Image Picker
    @IBAction func imagePickerBtnAction(selectedButton: UIButton)
    {

        let alert = UIAlertController(title: "Choose Image", message: nil, preferredStyle: .actionSheet)
        alert.addAction(UIAlertAction(title: "Camera", style: .default, handler: { _ in
            self.openCamera()
        }))

        alert.addAction(UIAlertAction(title: "Gallery", style: .default, handler: { _ in
            self.openGallery()
        }))

        alert.addAction(UIAlertAction.init(title: "Cancel", style: .cancel, handler: nil))

        self.present(alert, animated: true, completion: nil)
    }

照相机图像选择器功能：

func openCamera()
{
    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerController.SourceType.camera) {
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = UIImagePickerController.SourceType.camera
        imagePicker.allowsEditing = false
        self.present(imagePicker, animated: true, completion: nil)
    }
    else
    {
        let alert  = UIAlertController(title: "Warning", message: "You don't have camera", preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
        self.present(alert, animated: true, completion: nil)
    }
}

多媒体数据图像选择器功能：

func openGallery()
{
    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerController.SourceType.photoLibrary){
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.allowsEditing = true
        imagePicker.sourceType = UIImagePickerController.SourceType.photoLibrary
        self.present(imagePicker, animated: true, completion: nil)
    }
    else
    {
        let alert  = UIAlertController(title: "Warning", message: "You don't have permission to access gallery.", preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
        self.present(alert, animated: true, completion: nil)
    }
}

图像选取器委托：

//MARK:-- ImagePicker delegate
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    if let pickedImage = info[.originalImage] as? UIImage {
        // imageViewPic.contentMode = .scaleToFill
    }
    picker.dismiss(animated: true, completion: nil)
}

设置代理如下：

UIImagePickerControllerDelegate,UINavigationControllerDelegate

取一个imageview，以便显示所选/捕获的图像：

@IBOutlet weak var imageViewPic: UIImageView!

使用设备照相机捕获新图像：

if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera) {
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = UIImagePickerControllerSourceType.camera
        imagePicker.allowsEditing = false
        self.present(imagePicker, animated: true, completion: nil)
    }

从多媒体资料中选择照片：

if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary){
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.allowsEditing = true
        imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
        self.present(imagePicker, animated: true, completion: nil)
    }

这是委派方法：

//MARK: - ImagePicker delegate
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
       // imageViewPic.contentMode = .scaleToFill
        imageViewPic.image = pickedImage
    }
    picker.dismiss(animated: true, completion: nil)
}

在info.plist中设置相机和照片访问权限，例如：

<key>NSCameraUsageDescription</key>
<string>This app will use camera</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>You can select photo</string>

100%正常工作并经过测试

创建视图控制器并在情节提要中添加按钮和图像
在视图控制器中添加UIImagePickerControllerDelegate、UINavigationControllerDelegate协议
照相机操作按钮输入以下代码

let imagePickerController = UIImagePickerController()
    imagePickerController.delegate = self
    let actionsheet = UIAlertController(title: "Photo Source", message: "Choose A Sourece", preferredStyle: .actionSheet)
    actionsheet.addAction(UIAlertAction(title: "Camera", style: .default, handler: { (action:UIAlertAction)in
        if UIImagePickerController.isSourceTypeAvailable(.camera){
            imagePickerController.sourceType = .camera
            self.present(imagePickerController, animated: true, completion: nil)
        }else
        {
            print("Camera is Not Available")
        }


    }))
    actionsheet.addAction(UIAlertAction(title: "Photo Library", style: .default, handler: { (action:UIAlertAction)in
        imagePickerController.sourceType = .photoLibrary
        self.present(imagePickerController, animated: true, completion: nil)
    }))
    actionsheet.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
    self.present(actionsheet,animated: true, completion: nil)

在视图控制器中添加以下函数

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

在info.plist中添加行

Privacy - Photo Library Usage Description
Privacy - Camera Usage Description

我创建了这个漂亮的项目，使用这四行代码，您可以从相机或库中获取图像，并使用如下一行代码应用漂亮的滤镜：-

let picker = PickerController()
picker.applyFilter = true // to apply filter after selecting the picture by default false
picker.selectImage(self){ image in
    // Use the picture
}

Here's the link of the project.

//MARK:- Camera and Gallery

    func showActionSheet(){

        //Create the AlertController and add Its action like button in Actionsheet
        let actionSheetController: UIAlertController = UIAlertController(title: NSLocalizedString("Upload Image", comment: ""), message: nil, preferredStyle: .actionSheet)
        actionSheetController.view.tintColor = UIColor.black
        let cancelActionButton: UIAlertAction = UIAlertAction(title: NSLocalizedString("Cancel", comment: ""), style: .cancel) { action -> Void in
            print("Cancel")
        }
        actionSheetController.addAction(cancelActionButton)

        let saveActionButton: UIAlertAction = UIAlertAction(title: NSLocalizedString("Take Photo", comment: ""), style: .default)
        { action -> Void in
            self.camera()
        }
        actionSheetController.addAction(saveActionButton)

        let deleteActionButton: UIAlertAction = UIAlertAction(title: NSLocalizedString("Choose From Gallery", comment: ""), style: .default)
        { action -> Void in
            self.gallery()
        }
        actionSheetController.addAction(deleteActionButton)
        self.present(actionSheetController, animated: true, completion: nil)
    }

    func camera()
    {
        let myPickerControllerCamera = UIImagePickerController()
        myPickerControllerCamera.delegate = self
        myPickerControllerCamera.sourceType = UIImagePickerController.SourceType.camera
        myPickerControllerCamera.allowsEditing = true
        self.present(myPickerControllerCamera, animated: true, completion: nil)

    }

    func gallery()
    {

        let myPickerControllerGallery = UIImagePickerController()
        myPickerControllerGallery.delegate = self
        myPickerControllerGallery.sourceType = UIImagePickerController.SourceType.photoLibrary
        myPickerControllerGallery.allowsEditing = true
        self.present(myPickerControllerGallery, animated: true, completion: nil)

    }

    //MARK:- ***************  UIImagePickerController delegate Methods ****************

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

        // The info dictionary may contain multiple representations of the image. You want to use the original.
        guard let selectedImage = info[.originalImage] as? UIImage else {
            fatalError("Expected a dictionary containing an image, but was provided the following: \(info)")
        }

        // Set photoImageView to display the selected image.
        imageUserProfile.image = selectedImage

        // Dismiss the picker.
        dismiss(animated: true, completion: nil)
    }

Swift 5 Easy way只调用功能

//MARK Life Cycles
override func viewDidLoad() {
    super.viewDidLoad()
    choosePicture
}


extension AddBook: UIPickerViewDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

@objc func choosePicture(){
    let alert  = UIAlertController(title: "Select Image", message: "", preferredStyle: .actionSheet)
    alert.modalPresentationStyle = .overCurrentContext
    alert.addAction(UIAlertAction(title: "Camera", style: .default, handler: { (action) in
        self.openCamera()
    }))
    alert.addAction(UIAlertAction(title: "Photo Library", style: .default, handler: { (action) in
        self.openGallary()
    }))
    
    alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
    
    let popoverController = alert.popoverPresentationController
    
    popoverController?.permittedArrowDirections = .up
    
    
    self.present(alert, animated: true, completion: nil)
}

func openCamera() {
    if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerController.SourceType.camera))
    {
        imagePicker.sourceType = UIImagePickerController.SourceType.camera
        imagePicker.allowsEditing = true
        self.present(imagePicker, animated: true, completion: nil)
    }
    else
    {
        let alert  = UIAlertController(title: "Warning", message: "You don't have camera", preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
        self.present(alert, animated: true, completion: nil)
    }
}

func openGallary() {
    imagePicker.sourceType = UIImagePickerController.SourceType.photoLibrary
    imagePicker.allowsEditing = true
    self.present(imagePicker, animated: true, completion: nil)
}


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

private func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    // picker.supportedInterfaceOrientations = .
    if let image  = info[UIImagePickerController.InfoKey.originalImage.rawValue] as? UIImage {
        
            if btnPicOther.tag == 1 {
                btnPicOther.setImage(image, for: .normal)
            }
            else if btnPicBack.tag == 1 {
                btnPicBack.setImage(image, for: .normal)
            }
            else if btnPicFront.tag == 1{
                btnPicFront.setImage(image, for: .normal)
            }
            picker.dismiss(animated: true, completion: nil)
        }
    }
}

**Swift 5：**您可以使用以下相机图片：

1.创建项目
1.在主故事板中，在底部添加两个按钮并将imageView & link添加到viewController。
1.在Info.plist中添加隐私-相机使用说明权限，如下所示：

1.在视图控制器中粘贴以下代码：

class ViewController: UIViewController {

   @IBOutlet weak var imageView: UIImageView!

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

 @IBAction func btnPhotGalary(_ sender: Any) {
    let picker = UIImagePickerController()
    picker.sourceType = .photoLibrary
    picker.delegate = self
    present(picker, animated: true)
  }

@IBAction func btnCapture(_ sender: Any) {
  let picker = UIImagePickerController()
  picker.sourceType = .camera
  //for camera front
  // picker.cameraDevice = .front
   picker.delegate = self
   picker.allowsEditing = false
   present(picker, animated: true)
  }
  }

  extension ViewController :UIImagePickerControllerDelegate,UINavigationControllerDelegate{

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

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    picker.dismiss(animated: true, completion: nil)
    guard let originalImage = info[UIImagePickerController.InfoKey.originalImage] as? UIImage else {
     return
   }
    //for image rotation
    let image =  originalImage.upOrientationImage()
    imageView.image = image
  }

}

 extension UIImage {
    func upOrientationImage() -> UIImage? {
     switch imageOrientation {
        case .up:
         return self
     default:
       UIGraphicsBeginImageContextWithOptions(size, false, scale)
        draw(in: CGRect(origin: .zero, size: size))
        let result = UIGraphicsGetImageFromCurrentImageContext()
          UIGraphicsEndImageContext()
        return result
       }
     }
 }

1.完整的源代码在GitHub中给出：https://github.com/enamul95/UIImagePicker.git

这将创建一个可重用的类，当点击图像、按钮等时，它将显示一个操作表。

import Foundation
import UIKit

class CameraHandler: NSObject{
    static let shared = CameraHandler()
    
    fileprivate var currentVC: UIViewController!
    
    //MARK: Internal Properties
    var imagePickedBlock: ((UIImage) -> Void)?

    func camera()
    {
        if UIImagePickerController.isSourceTypeAvailable(.camera){
            let myPickerController = UIImagePickerController()
            myPickerController.delegate = self
            myPickerController.allowsEditing = true
            myPickerController.sourceType = .camera
            currentVC.present(myPickerController, animated: true, completion: nil)
        }
        
    }
    
    func photoLibrary()
    {
        
        if UIImagePickerController.isSourceTypeAvailable(.photoLibrary){
            let myPickerController = UIImagePickerController()
            myPickerController.delegate = self
            myPickerController.allowsEditing = true
            myPickerController.sourceType = .photoLibrary
            currentVC.present(myPickerController, animated: true, completion: nil)
        }
        
    }
    
    func showActionSheet(vc: UIViewController) {
        currentVC = vc
        let actionSheet = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
        
        actionSheet.addAction(UIAlertAction(title: "Camera", style: .default, handler: { (alert:UIAlertAction!) -> Void in
            self.camera()
        }))
        
        actionSheet.addAction(UIAlertAction(title: "Gallery", style: .default, handler: { (alert:UIAlertAction!) -> Void in
            self.photoLibrary()
        }))
        
        actionSheet.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
        
        vc.present(actionSheet, animated: true, completion: nil)
    }
    
}

extension CameraHandler: UIImagePickerControllerDelegate, UINavigationControllerDelegate{
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    // The info dictionary may contain multiple representations of the image. Since we said "allowsEditing = true" we need to set this to ".editedImage".
        guard let selectedImage = info[.editedImage] as? UIImage else {
    fatalError("“Expected a dictionary containing an image, but was provided the following: \(info)")
    }
    // Set photoImageView to display the selected image.
    self.imagePickedBlock?(selectedImage)
    // Dismiss the picker.
    currentVC.dismiss(animated: true, completion: nil)
    }
}

使用它

1.请确保您像下面的图片一样设置您的信息PList。x1c 0d1x
1.创建一个带有UIImageView的故事板，并将imageView拖到ViewController中。这将创建一个@IBOutlet，如下面的代码所示。我将我的imageView命名为profileImageView。
1.创建一个UIImage并将其设置为资产文件夹中的映像或使用系统映像。如果使用系统映像，则它应类似于此UIImage（systemName：“加号”）注意：另外是一个传递任何系统映像示例。
(4)创建一个更新profileImageView的函数以满足您的需要，将图像添加到profileImageView，然后在ViewDidLoad（）中调用此函数
(5)在同一个函数中，我设置了一个tapGestureRecognizer，这样无论何时点击imageView，它都会得到通知，并触发editImageTapGesture（）函数。
(6)设置editImageTapGesture函数以访问CameraHandler并显示操作表，以及将图像（您从库中选择或从相机拍摄）分配给您的profileImageView。

import UIKit

class EditProfileImageController: UIViewController {

// (2) IBOutlet from storyboard

    @IBOutlet weak var profileImageView: UIImageView!
    
// (3) Add image: this can be a system image or in my case an image in my assets folder named "noImage".
    var profileImage = UIImage(named: "noImage")
    
    override func viewDidLoad() {
        super.viewDidLoad()
        setupProfileImage()
    }
    
//(4) I setup the profile image in this function and set profile image to the profileImageView 
    private func setupProfileImage() {
        profileImageView.contentMode = .scaleAspectFill
        profileImageView.image = profileImage

        //(5) setup tap gesture for when profileImageView is tapped
        profileImageView.isUserInteractionEnabled = true
        let editImageTapGesture = UITapGestureRecognizer(target: self, action: #selector(editProfileImageTapped(_:)))
        profileImageView.addGestureRecognizer(editImageTapGesture)
    }
    
    
   //(6) Once tap on profile image occurs the action sheet appears with Gallery and Camera buttons. 
    @objc func editProfileImageTapped(_ sender: UITapGestureRecognizer) {
        CameraHandler.shared.showActionSheet(vc: self)
        CameraHandler.shared.imagePickedBlock = { (image) in
            self.profileImageView.image = image 
        }
    }
}

操作表应如下所示：