Access to Camera and Photo Library

Camera&Gallery

import UIKit
import Photos
import AVFoundation
import MediaCenterSDK
import Kingfisher
import NVActivityIndicatorView
import ObjectMapper

class ViewController: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate, NVActivityIndicatorViewable {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // Do any additional setup after loading the view.
        
        self.title = "上传图片<单张>"
        
        self.view.backgroundColor = #colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
        
        self.view.addSubview(self.uploadBtn)
        self.view.addSubview(self.introLabel)
        self.view.addSubview(self.pickedImageView)
        
        NVActivityIndicatorView.DEFAULT_BLOCKER_MESSAGE_FONT = UIFont.boldSystemFont(ofSize: 14)
        
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    // MARK: - UIImagePickerControllerDelegate
    
    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
        picker.dismiss(animated: true, completion: nil)
    }
    
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
        var image:UIImage? = nil
        if picker.allowsEditing {
            image = info["UIImagePickerControllerEditedImage"] as? UIImage
        } else {
            image = info["UIImagePickerControllerOriginalImage"] as? UIImage
        }
        
    }
    
    // MARK: - custom method
    
    /// 选择照片
    func selectPhoto() {
        
        let alertVC = UIAlertController.init(title: nil, message: nil, preferredStyle: .actionSheet)
        let photoAction = UIAlertAction.init(title: "从相册选择", style: .default) { (action) in
            self.changeAvatarWithType(isCamera: false)
        }
        alertVC.addAction(photoAction)
        let cameraAction = UIAlertAction.init(title: "拍照", style: .default) { (action) in
            self.changeAvatarWithType(isCamera: true)
        }
        alertVC.addAction(cameraAction)
        let cancelAction = UIAlertAction.init(title: "取消", style: .cancel) { (action) in
            
        }
        alertVC.addAction(cancelAction)
        self.present(alertVC, animated: true, completion: nil)
    }
    
    func changeAvatarWithType(isCamera:Bool) {
        if isCamera {
            cameraAuthorization()
        } else {
            assetsAuthorization()
        }
    }
    
    func assetsAuthorization() {
        let status = PHPhotoLibrary.authorizationStatus()
        if status == .notDetermined {
            PHPhotoLibrary.requestAuthorization({ (status) in
                if status == .authorized {
                    self.avatarChangeWithType(isCamera:false)
                }
            })
        } else if status == .authorized {
            self.avatarChangeWithType(isCamera:false)
        } else {
            let alertVC = UIAlertController.init(title: "此应用没有权限访问您的照片或视频", message: "您可以在”隐私设置“中启动访问", preferredStyle: .alert)
            let setAction = UIAlertAction.init(title: "设置", style: .default, handler: { (action) in
                UIApplication.shared.openURL(NSURL(string:UIApplicationOpenSettingsURLString)! as URL)
            })
            alertVC.addAction(setAction)
            let cancelAction = UIAlertAction.init(title: "取消", style: .default, handler: { (action) in
                
            })
            alertVC.addAction(cancelAction)
        }
    }
    
    func cameraAuthorization() {
        let status = AVCaptureDevice.authorizationStatus(forMediaType: AVMediaTypeVideo)
        if status == .authorized {
            self.avatarChangeWithType(isCamera:true)
        } else if status == .notDetermined {
            AVCaptureDevice.requestAccess(forMediaType: AVMediaTypeVideo, completionHandler: { (granted) in
                if granted {
                    self.avatarChangeWithType(isCamera:true)
                }
            })
        } else if status == .denied || status == .restricted {
            let alertVC = UIAlertController.init(title: "此应用没有权限访问您的相机", message: "您可以在”隐私设置“中启动访问", preferredStyle: .alert)
            let setAction = UIAlertAction.init(title: "设置", style: .default, handler: { (action) in
                UIApplication.shared.openURL(NSURL(string:UIApplicationOpenSettingsURLString)! as URL)
            })
            alertVC.addAction(setAction)
            let cancelAction = UIAlertAction.init(title: "取消", style: .default, handler: { (action) in
                
            })
            alertVC.addAction(cancelAction)
        }
    }
    
    func avatarChangeWithType(isCamera:Bool) {
        let imagePickerVC = UIImagePickerController()
        if isCamera {
            if UIImagePickerController.isSourceTypeAvailable(.camera) {
                imagePickerVC.sourceType = .camera
            }
        } else {
            if UIImagePickerController.isSourceTypeAvailable(.photoLibrary) {
                imagePickerVC.sourceType = .photoLibrary
            }
        }
        //imagePickerVC.allowsEditing = true
        imagePickerVC.delegate = self
        self.present(imagePickerVC, animated: true, completion: nil)
    }
    
    
    // MARK: - lazy load
    
    fileprivate lazy var uploadBtn: UIButton = {
        let button = UIButton.init(type: .system)
        button.frame = CGRect(x: 20, y: 120, width: UIScreen.main.bounds.size.width - 40, height: 40)
        button.setTitle("点击选择照片上传", for: .normal)
        button.layer.cornerRadius = 4
        button.layer.borderWidth = 0.5
        button.layer.borderColor = #colorLiteral(red: 0.8039215803, green: 0.8039215803, blue: 0.8039215803, alpha: 1).cgColor
        button.addTarget(self, action: #selector(selectPhoto), for: .touchUpInside)
        return button
    }()
    
    fileprivate lazy var pickedImageView: UIImageView = {
        let imageView = UIImageView.init()
        imageView.clipsToBounds = true
        imageView.contentMode = .scaleAspectFill
        imageView.frame = CGRect(x: 20, y: 180, width: UIScreen.main.bounds.size.width - 40, height: UIScreen.main.bounds.size.width - 40)
        return imageView
    }()
    
    fileprivate lazy var introLabel: UILabel = {
        let label = UILabel.init()
        label.frame = CGRect(x: 20, y: 70, width: UIScreen.main.bounds.size.width - 40, height:40)
        label.numberOfLines = 0
        label.textColor = #colorLiteral(red: 0.9254902005, green: 0.2352941185, blue: 0.1019607857, alpha: 1)
        label.font = UIFont.systemFont(ofSize: 14)
        return label
    }()
}

CameraHandler.swift

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.sourceType = .camera
            currentVC.present(myPickerController, animated: true, completion: nil)
        }
        
    }
    
    func photoLibrary()
    {
        
        if UIImagePickerController.isSourceTypeAvailable(.photoLibrary){
            let myPickerController = UIImagePickerController()
            myPickerController.delegate = self;
            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 imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
        currentVC.dismiss(animated: true, completion: nil)
    }
    
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
        if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
            self.imagePickedBlock?(image)
        }else{
            print("Something went wrong")
        }
        currentVC.dismiss(animated: true, completion: nil)
    }
    
}