swiftUI基础值UIImagePickerController

mport UIKit
import MediaPlayer
import MobileCoreServices

class ViewController: UIViewController, UINavigationControllerDelegate, UIImagePickerControllerDelegate {

@IBOutlet weak var myImage: UIImageView!
@IBAction func useCamera(sender: UIButton) {
let imagePicker = UIImagePickerController()
imagePicker.delegate = self
imagePicker.sourceType = UIImagePickerControllerSourceType.Camera

//to select only camera controls, not video
imagePicker.mediaTypes = [kUTTypeImage as String]
imagePicker.showsCameraControls = true
//imagePicker.allowsEditing = true
self.presentViewController(imagePicker, animated: true, completion: nil)
}
override func viewDidLoad() {
super.viewDidLoad()
}

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

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

let image = info[UIImagePickerControllerOriginalImage] as! UIImage
let imageData = UIImagePNGRepresentation(image)! as NSData

//save in photo album
UIImageWriteToSavedPhotosAlbum(image, self, #selector(ViewController.image(_:didFinishSavingWithError:contextInfo:)), nil)

//save in documents
let documentsPath = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true).last
let filePath = (documentsPath! as NSString).stringByAppendingPathComponent("pic.png")
imageData.writeToFile(filePath, atomically: true)

myImage.image = image

self.dismissViewControllerAnimated(true, completion: nil)
}

func image(image: UIImage, didFinishSavingWithError error: NSErrorPointer, contextInfo: UnsafePointer<()>){
if(error != nil){
print("ERROR IMAGE \(error.debugDescription)")
}
}

func imagePickerControllerDidCancel(picker: UIImagePickerController){
self.dismissViewControllerAnimated(true, completion: nil)
}

}