Swift4.0 從相冊中獲取圖片和拍照

第一步

添加協議

UIImagePickerControllerDelegate,UINavigationControllerDelegate

第二步

添加選擇方式

let sexActionSheet = UIAlertController.init(title: nil, message: nil, preferredStyle: .actionSheet)

        weak var weakSelf = self

        let sexNanAction = UIAlertAction(title: "從相冊中選擇", style: UIAlertActionStyle.default){ (action:UIAlertAction)in

            weakSelf?.initPhotoPicker()
            //填寫需要的響應方法

        }

        let sexNvAction = UIAlertAction(title: "拍照", style: UIAlertActionStyle.default){ (action:UIAlertAction)in


            weakSelf?.initCameraPicker()
            //填寫需要的響應方法

        }


        let sexSaceAction = UIAlertAction(title: "取消", style: UIAlertActionStyle.cancel){ (action:UIAlertAction)in

            //填寫需要的響應方法

        }


        sexActionSheet.addAction(sexNanAction)
        sexActionSheet.addAction(sexNvAction)
        sexActionSheet.addAction(sexSaceAction)

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

第三步

//MARK: - 相機

    //從相冊中選擇
    func initPhotoPicker(){
        let photoPicker =  UIImagePickerController()
        photoPicker.delegate = self
        photoPicker.allowsEditing = true
        photoPicker.sourceType = .photoLibrary
        //在需要的地方present出來
        self.present(photoPicker, animated: true, completion: nil)
    }


    //拍照
    func initCameraPicker(){

        if UIImagePickerController.isSourceTypeAvailable(.camera){
            let  cameraPicker = UIImagePickerController()
            cameraPicker.delegate = self
            cameraPicker.allowsEditing = true
            cameraPicker.sourceType = .camera
            //在需要的地方present出來
            self.present(cameraPicker, animated: true, completion: nil)
        } else {

           print("不支持拍照")

        }

    }



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


        //獲得照片
        let image:UIImage = info[UIImagePickerControllerEditedImage] as! UIImage

        // 拍照
        if picker.sourceType == .camera {  
         //保存相冊
        UIImageWriteToSavedPhotosAlbum(image, self, #selector(image(image:didFinishSavingWithError:contextInfo:)), nil)   
        }

        personImage.image = image

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


  @objc func image(image:UIImage,didFinishSavingWithError error:NSError?,contextInfo:AnyObject) {

        if error != nil {

            print("保存失敗")


        } else {

            print("保存成功")


        }
    }