swift-選取多張圖片並顯示在collectionView中

//

//  imagePicker_collectionViewController.swift

//  yadaService

//

//  Created by 小海馬 on 2018/6/27.

//  Copyright © 2018 . All rights reserved.

//



import UIKit

import SnapKit

import ImagePicker

import Lightbox

import Alamofire

import Foundation



class imagePicker_collectionViewController: UIViewController,UICollectionViewDelegate, UICollectionViewDataSource, ImagePickerDelegate {

    

    //-----------image array--------------------



    var imageCount : Int = 0

    var imageArray = Array<UIImage>()

    

    //------------collection view---------------

    

    let BJWidth = UIScreen.main.bounds.size.width

    let BJHeight = UIScreen.main.bounds.size.height

    var flowLayout:UICollectionViewFlowLayout!

    var myCollectionView: UICollectionView!

    

    //------------select button------------------------

    

    var button : UIButton! = UIButton()

    

    //------------save button----------------

    

    var saveBtn : UIButton! = UIButton()

    

    //------------------------------------------

    

    override func viewDidLoad() {

        super.viewDidLoad()



        //------------button------------------------

        

        button.setTitle("click", for: .normal)

        button.addTarget(self, action: #selector(buttonTouched(button:)), for: .touchUpInside)

        self.view.addSubview(button)

        button.snp.makeConstraints { (make) in

            make.width.equalTo(100)

            make.height.equalTo(50)

            make.centerX.equalTo(self.view.snp.centerX)

            make.top.equalTo(self.view.snp.top).offset(100)

        }

        

        //------------save button----------------

        

        saveBtn.setTitle("save", for: .normal)

        saveBtn.addTarget(self, action: #selector(upload), for: .touchUpInside)

        self.view.addSubview(saveBtn)

        saveBtn.snp.makeConstraints { (make) in

            make.width.equalTo(100)

            make.height.equalTo(50)

            make.centerX.equalTo(self.view.snp.centerX)

            make.top.equalTo(self.button.snp.bottom).offset(500)

        }

        

        //------------collection view---------------

        

        flowLayout = UICollectionViewFlowLayout()

        myCollectionView = UICollectionView.init(frame: view.bounds, collectionViewLayout: flowLayout)

        myCollectionView.delegate = self

        myCollectionView.backgroundColor = UIColor(displayP3Red: 54/255, green: 45/255, blue: 66/255, alpha: 1)

        myCollectionView.dataSource = self

        myCollectionView.register(UINib(nibName:"NormalCell", bundle: nil), forCellWithReuseIdentifier:"Normal")

        myCollectionView.collectionViewLayout = flowLayout

        flowLayout = UICollectionViewFlowLayout.init()

        flowLayout.itemSize = CGSize(width:(BJWidth-30)/2 , height:(BJWidth-30)/2 )

        self.view.addSubview(myCollectionView)

        myCollectionView.snp.makeConstraints { (make) in

            make.width.equalTo(self.view.snp.width).multipliedBy(0.9)

            make.height.equalTo(300)

            make.centerX.equalTo(self.view.snp.centerX)

            make.top.equalTo(button.snp.bottom).offset(100)

        }

        

        //------------------------------------------

        

    }

    

    // MARK: - ImagePickerDelegate

    func cancelButtonDidPress(_ imagePicker: ImagePickerController) {

        imagePicker.dismiss(animated: true, completion: nil)

    }

    

    func wrapperDidPress(_ imagePicker: ImagePickerController, images: [UIImage]) {

        guard images.count > 0 else { return }

        let lightboxImages = images.map {

            return LightboxImage(image: $0)

        }

        

        let lightbox = LightboxController(images: lightboxImages, startIndex: 0)

        imagePicker.present(lightbox, animated: true, completion: nil)

    }

    

    func doneButtonDidPress(_ imagePicker: ImagePickerController, images: [UIImage]) {

        

        var imageAssets: [UIImage] {

            return AssetManager.resolveAssets(imagePicker.stack.assets)

        }

        let imageSegue = imageAssets

        print("一共選擇了\(imageSegue.count)張圖片,")

        self.imageCount = imageSegue.count

        self.imageArray = imageAssets

        imagePicker.dismiss(animated: true, completion: nil)

        self.myCollectionView.reloadData()

    }

    

    //添加圖片按鈕點擊方法

    @objc func buttonTouched(button: UIButton) {

        var config = Configuration()

        config.doneButtonTitle = "Finish"

        config.noImagesTitle = "Sorry! There are no images here!"

        config.recordLocation = false

        config.allowVideoSelection = true

        let imagePicker = ImagePickerController(configuration: config)

        imagePicker.delegate = self

        present(imagePicker, animated: true, completion: nil)

    }

    



    //照片上傳

    @objc func upload()

    {

        

    }

    

    

    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {

        return imageCount;

    }

    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {

        let cell = collectionView.dequeueReusableCell(withReuseIdentifier:"Normal", for:indexPath) as! NormalCell

        cell.collectionImage.image = imageArray[indexPath.row]

        return cell

    }



    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

    }



}