我正在制作一款应用程序，用户可以上传不同类型服装项目的照片，并将其显示在Collection 视图中.用户可以点击下拉菜单中的一个按钮，告诉程序图像应该放在哪个部分下.我最初只需要一个集合视图.但现在我决定扩展到多个，但我只有一个的代码.有没有一种好的方法来调整我已经编写的代码，使其他集合视图具有与第一个相同的行为？
//
// ViewController.swift
// ugh as if
//
//
import UIKit
import PhotosUI
import Photos
import CoreData
import Foundation
import SwiftUI
// user images below
var imageIDs = [String]()
var countImage = Int()
var currentImageType = String()
class ViewController: UIViewController, PHPickerViewControllerDelegate {
// when trash is pressed in ClsoetDetailViewController, return to ViewController
@IBAction func unwindToCloset(segue: UIStoryboardSegue) {
self.collectionView.reloadData()
}
@IBOutlet var collectionView: UICollectionView!
@IBOutlet var outerwearCollectionView: UICollectionView!
override func viewDidLoad() {
super.viewDidLoad()
// popup menu items
let tops = UIAction(title: "tops") { (action) in
print("tops!")
self.addPhotos(categoryType: "tops")
}
let outerwear = UIAction(title: "outerwear") { (action) in
print("outerwear!")
self.addPhotos(categoryType: "outerwear")
}
let bottoms = UIAction(title: "bottoms") { (action) in
print("bottoms!")
self.addPhotos(categoryType: "bottoms")
}
let singles = UIAction(title: "one pieces") { (action) in
print("singles!")
self.addPhotos(categoryType: "singles")
}
let accessories = UIAction(title: "accessories") { (action) in
print("accessories!")
self.addPhotos(categoryType: "accessories")
}
let shoes = UIAction(title: "shoes") { (action) in
print("shoes!")
self.addPhotos(categoryType: "shoes")
}
let menu = UIMenu(title: "my closet", options: .displayInline,
children: [tops , outerwear , bottoms, singles, shoes, accessories])
// set up collection in closet
// navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .add, target: self, action: #selector(addPhotos))
navigationItem.rightBarButtonItems = [UIBarButtonItem(systemItem: .add, menu: menu)]
collectionView.register(ClosetCollectionViewCell.nib(), forCellWithReuseIdentifier: "ClosetCollectionViewCell")
// layout.minimumInteritemSpacing = 0
let layout = UICollectionViewFlowLayout()
layout.itemSize = CGSize(width: 75, height: 100)
layout.minimumLineSpacing = 15
collectionView.collectionViewLayout = layout
collectionView.delegate = self
collectionView.dataSource = self
collectionView.reloadData()
}
// access photo library
@objc private func addPhotos(categoryType: String) {
var config = PHPickerConfiguration()
config.selectionLimit = 100
config.filter = .images
let vc = PHPickerViewController(configuration: config)
vc.delegate = self
present(vc, animated: true)
currentImageType = categoryType
}
func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
picker.dismiss(animated: true, completion: nil)
let group = DispatchGroup()
results.forEach { result in
group.enter()
result.itemProvider.loadObject(ofClass: UIImage.self) { reading, error in
defer {
group.leave()
}
guard let image = reading as? UIImage, error == nil else {
return
}
countImage += 1
print(countImage)
imageIDs.append(String(countImage))
print(imageIDs)
LocalFileManager.instance.saveImage(image: image, imageName: String(countImage), folderName: currentImageType)
}
}
group.notify(queue: .main) {
self.collectionView.reloadData()
}
}
}
extension ViewController: UICollectionViewDelegate {
func collectionView(\_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
collectionView.deselectItem(at: indexPath, animated: true)
print("you tapped me!")
// set closetImageName in ClosetDetailViewController
detailImageName = imageIDs\[indexPath.row\]
print(imageIDs[indexPath.row])
performSegue(withIdentifier: "closetDetail", sender: nil)
}
}
extension ViewController: UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
// how many cells are shown? based on number of items the user uploaded
return countImage
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
// return cell for given item
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "ClosetCollectionViewCell", for: indexPath) as! ClosetCollectionViewCell
// show every cell in image array
cell.imageView.image = LocalFileManager.instance.getImage(imageName: imageIDs[indexPath.row], folderName: "tops")
return cell
}
}
extension ViewController: UICollectionViewDelegateFlowLayout {
// margin of padding between cells
func collectionView(\_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -\> CGSize {
return CGSize(width: 75, height: 100)
}
}
下面是Collection 视图的样子，但与我现在拥有的，所有的照片只被发送到"TOPS"Collection
我仍然是Xcode的新手，而且只用了几个月，所以如果有任何帮助，我将不胜感激！
我试着复制和编辑扩展(如下所示)中的功能，这样我就可以将不同的照片发送到不同的位置，但它一直向我抛出错误.
extension ViewController: UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
// how many cells are shown? based on number of items the user uploaded
return countImage
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
// return cell for given item
if collectionView == self.collectionView {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "ClosetCollectionViewCell", for: indexPath) as! ClosetCollectionViewCell
// show every cell in image array
cell.imageView.image = LocalFileManager.instance.getImage(imageName: imageIDs[indexPath.row], folderName: "tops")
return cell
}
else {
let cell = outerwearCollectionView.dequeueReusableCell(withReuseIdentifier: "ClosetCollectionViewCell", for: indexPath) as! ClosetCollectionViewCell
cell.imageView.image = LocalFileManager.instance.getImage(imageName: imageIDs[indexPath.row], folderName: "outerwear")
return cell
}
}
}