如何在Swift

Question

如何让用户选择多个图像，然后在swift中将它们作为数组上传？或者，任何人都可以建议一个记录良好的swift库，允许用户选择多个图像吗？

我的代码只允许我一次选择一张图片：

import UIKit

class SubmitPhoto: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate{

@IBOutlet weak var imageView: UIImageView!

@IBAction func pickGalleryBtn(sender: AnyObject) {
    imagePicker.allowsEditing = false
    imagePicker.sourceType = .PhotoLibrary

    presentViewController(imagePicker, animated: true, completion: nil)
}


@IBOutlet weak var commentField: UITextView!


@IBAction func submitBtn(sender: AnyObject) {

}

let imagePicker = UIImagePickerController()

var slctdImage: [String] = []

override func viewDidLoad() {
    super.viewDidLoad()
    imagePicker.delegate = self
}

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
        imageView.contentMode = .ScaleAspectFit
        imageView.image = pickedImage
        uploadImage(pickedImage)
    }

    dismissViewControllerAnimated(true, completion: nil)
}

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

func uploadImage(image:UIImage){

}

}