如何将整数数组转换为逗号分隔的字符串（在Swift中）

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12 浏览2023年5月18日

匿名的 2023年5月19日

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在我的应用程序中，我使用了一个对象，假设为var selectedIds = Int。我希望这个selectedIds以逗号分隔。因为我需要将selectedIds发送到下一个屏幕，在这个屏幕上调用API时需要使用逗号分隔的参数。我希望得到的ids是556,573，这样我就可以将其传递给接收控制器的参数中。

我想在以下的viewcontroller文件中发送selectedIds数组：

class CategoryViewController: UIViewController {


    //MARK: IBOutlets
    @IBOutlet weak var store_bar: UIViewX!
    @IBOutlet weak var store_title: UIButton!
    @IBOutlet weak var category_title: UIButton!
    @IBOutlet weak var category_bar: UIViewX!
    @IBOutlet weak var categoryColView: UICollectionView!
    var selectedBtnIndex:Int = 1
    var selectedIds = [Int]()
    var storeIds = [Int]()
    var categoryData = [ModelCategories]()
    var storeData = [ModelStore]()
    var arrCategoryImages = [UIImage]()
    override func viewDidLoad() {
        super.viewDidLoad()
        // 注册collectionview cell
        self.categoryColView.register(UINib(nibName: "CategoryCell1", bundle: nil), forCellWithReuseIdentifier: "CategoryCell1")
        self.categoryColView.register(UINib(nibName: "StoresCell", bundle: nil), forCellWithReuseIdentifier: "StoresCell")
        self.store_bar.isHidden = true
        self.getCategoriesList()
        self.getStoreList()
    }
    override var preferredStatusBarStyle: UIStatusBarStyle {
        return .lightContent
    }
    @objc func click_Category(sender: UIButton!) {
        if sender.isSelected == true {
            selectedIds.append(categoryData[sender.tag].ID!)
            sender.setImage(#imageLiteral(resourceName: "image_checked"), for: .normal)
            sender.isSelected = false
        }else {
            selectedIds = selectedIds.filter{ $0 != sender.tag }
            sender.setImage(#imageLiteral(resourceName: "image_unchecked"), for: .normal)
            sender.isSelected = true
        }
    }
    @objc func click_store(sender: UIButton!) {
        if sender.isSelected == true {
            selectedIds.append(storeData[sender.tag].ID!)
            sender.setImage(#imageLiteral(resourceName: "image_checked"), for: .normal)
            sender.isSelected = false
        }else {
            selectedIds = selectedIds.filter{ $0 != sender.tag }
            sender.setImage(#imageLiteral(resourceName: "image_unchecked"), for: .normal)
            sender.isSelected = true
        }
    }
    //MARK: IBActions
    @IBAction func categoriesData(_ sender: UIButton) {
        selectedBtnIndex = 1
        self.categoryColView.isHidden = false
        self.store_bar.isHidden = true
        self.category_title.setTitleColor(UIColor.black, for: .normal)
        self.category_bar.isHidden = false
        self.store_title.setTitleColor(UIColor(rgb: 0xAAAAAA), for: .normal)
        self.categoryColView.reloadData()
    }
    @IBAction func storeData(_ sender: UIButton) {
        selectedBtnIndex = 2
        self.categoryColView.isHidden = false
        self.store_bar.isHidden = false
        self.store_title.setTitleColor(UIColor.black, for: .normal)
        self.category_bar.isHidden = true
        self.category_title.setTitleColor(UIColor(rgb: 0xAAAAAA), for: .normal)
        self.categoryColView.reloadData()
    }
    @IBAction func showHomeScreen(_ sender: UIButton) {
        let vc = self.storyboard?.instantiateViewController(withIdentifier: "HomeViewController") as! HomeViewController
        if selectedBtnIndex == 1 {
            vc.selectedIds = self.selectedIds
//          vc.couponId = categoryData[sender.tag].ID!
        }else {
            vc.selectedIds = self.selectedIds
        }
        self.navigationController?.pushViewController(vc, animated:true)
    }
    @IBAction func toSearchPage(_ sender: UIButton) {
        let vc = self.storyboard?.instantiateViewController(withIdentifier: "SearchPageController") as! SearchPageController
        self.navigationController?.pushViewController(vc, animated:true)
    }
    func getCategoriesList() {
        if ApiUtillity.sharedInstance.isReachable() {
            ApiUtillity.sharedInstance.StartProgress(view: self.view)
            APIClient().API_GET(Url: SD_GET_CategoriesList, Params: [:], Authentication: true, Progress: true, Alert: true, Offline: false, SuperVC: self, completionSuccess: { (modelResponse) in
                ApiUtillity.sharedInstance.StopProgress(view: self.view)
                if(modelResponse.success == true) {
                    self.categoryData.removeAll()
                    let resul_array_tmp_new = modelResponse.categories! as NSArray
                    if resul_array_tmp_new.count > 0 {
                        for i in modelResponse.categories! {
                            if i.count != 0 {
                                if let image = UIImage(named: "\(i.slug!.uppercased())") {
                                    self.arrCategoryImages.append(image)
                                    self.categoryData.append(i)
                                }else {
                                    self.arrCategoryImages.append(UIImage(named: "tickets")!)
                                    self.categoryData.append(i)
                                }
                            }
                        }
                    }
                }
                else {
                    self.view.makeToast(modelResponse.message)
                }
                ApiUtillity.sharedInstance.StopProgress(view: self.view)
                self.categoryColView.reloadData()
            }) { (failed) in
                ApiUtillity.sharedInstance.StopProgress(view: self.view)
                self.view.makeToast(failed.localizedDescription)
            }
        }
        else
        {
            self.view.makeToast("No Internet Connection..")
        }
    }
    func getStoreList() {
        if ApiUtillity.sharedInstance.isReachable() {
            ApiUtillity.sharedInstance.StartProgress(view: self.view)
            APIClient().API_GET(Url: SD_GET_StoreList, Params: [:], Authentication: true, Progress: true, Alert: true, Offline: false, SuperVC: self, completionSuccess: { (modelResponse) in
                ApiUtillity.sharedInstance.StopProgress(view: self.view)
                if(modelResponse.success == true) {
                    self.storeData.removeAll()
                    let resul_array_tmp_new = modelResponse.store! as NSArray
                    if resul_array_tmp_new.count > 0 {
                        for i in modelResponse.store! {
                            if i.count != 0 {
                                self.storeData.append(i)
                            }
                        }
                    }
                }
                else {
                    self.view.makeToast(modelResponse.message)
                }
                ApiUtillity.sharedInstance.StopProgress(view: self.view)
                self.categoryColView.reloadData()
            }) { (failed) in
                ApiUtillity.sharedInstance.StopProgress(view: self.view)
                self.view.makeToast(failed.localizedDescription)
            }
        }
        else
        {
            self.view.makeToast("No Internet Connection..")
        }
    }
}
//MARK: Delegate and Data Source Methods
extension CategoryViewController: UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        if selectedBtnIndex == 1{
            return categoryData.count
        }else {
            return storeData.count
        }
    }
    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        if selectedBtnIndex == 1{
            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CategoryCell1", for: indexPath) as! CategoryCell1
            let dict = categoryData[indexPath.row]
            if let catName = dict.name, catName.count != 0 {
                cell.categoryName.text = catName
            }
            if let catOffersCount = dict.count {
                if catOffersCount == 1 {
                  cell.catOfferCount.text = "\(catOffersCount)"+" "+"Offer"
                }else {
                    cell.catOfferCount.text = "\(catOffersCount)"+" "+"Offers"
                }
            }
            cell.categoryImage.image = arrCategoryImages[indexPath.row]
            cell.btn_click.tag = indexPath.row
            cell.btn_click.addTarget(self, action: #selector(self.click_Category), for: .touchUpInside)
            if selectedIds.contains(categoryData[indexPath.row].ID!) {
                cell.btn_click.setImage(#imageLiteral(resourceName: "image_checked"), for: .normal)
                cell.btn_click.isSelected = true
            }else {
                cell.btn_click.setImage(#imageLiteral(resourceName: "image_unchecked"), for: .normal)
                cell.btn_click.isSelected = false
            }
            return cell
        }else {
            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "StoresCell", for: indexPath) as! StoresCell
            let dict = storeData[indexPath.row]
            if let storeName = dict.name, storeName.count != 0 {
                cell.storeName.text = storeName
            }
            if let storeOfferCount = dict.count {
                cell.storeOfferCount.text = "\(storeOfferCount)"+" "+"Offers"
            }
            cell.store_btn_click.tag = indexPath.row
            cell.store_btn_click.addTarget(self, action: #selector(self.click_store), for: .touchUpInside)
            if selectedIds.contains(storeData[indexPath.row].ID!) {
                cell.store_btn_click.setImage(#imageLiteral(resourceName: "image_checked"), for: .normal)
                cell.store_btn_click.isSelected = true
            }else {
                cell.store_btn_click.setImage(#imageLiteral(resourceName: "image_unchecked"), for: .normal)
                cell.store_btn_click.isSelected = false
            }
            return cell
        }
    }
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        if selectedBtnIndex == 1{
           return CGSize(width: (UIScreen.main.bounds.width) / 3, height: 93)
        }else {
            return CGSize(width: (UIScreen.main.bounds.width) / 2, height: 48)
        }
    }

我想在以下的viewcontroller文件中使用selectedIds数组：

class HomeViewController: UIViewController {


    var couponsData = [ModelCoupons]()
    var couponId = Int()
    var selectedIds = [Int]()
    @IBOutlet weak var homeTblView: UITableView!
    override func viewDidLoad() {
        super.viewDidLoad()
        self.homeTblView.register(UINib(nibName: "HomeCell", bundle: nil), forCellReuseIdentifier: "HomeCell")
        self.post_CouponsData()
        print(selectedIds)
    }
    override var preferredStatusBarStyle: UIStatusBarStyle {
        return .lightContent
    }
    //MARK: IBActions
    @IBAction func toCategoryScreen(_ sender: UIButton) {
        self.navigationController?.popViewController(animated: true)
    }
    @IBAction func toSearchPage(_ sender: UIButtonX) {
        let vc = self.storyboard?.instantiateViewController(withIdentifier: "SearchPageController") as! SearchPageController
        self.navigationController?.pushViewController(vc, animated: true)
    }
    func post_CouponsData() {
        if ApiUtillity.sharedInstance.isReachable() {
            var params = [String : String]()
            params ["term_ids"] = "\(self.selectedIds)"
            ApiUtillity.sharedInstance.StartProgress(view: self.view)
            APIClient().API_POST(Url: SD_POST_CouponsList, Params: params as [String:AnyObject], Authentication: true, Progress: true, Alert: true, Offline: false, SuperVC: self, completionSuccess: { (modelResponse) in
                ApiUtillity.sharedInstance.StopProgress(view: self.view)
                if(modelResponse.success == true) {
                    ApiUtillity.sharedInstance.StopProgress(view: self.view)
                    let dict = modelResponse.coupons
                    for i in dict! {
                        self.couponsData.append(i)
                    }
                }else {
                    self.view.makeToast(modelResponse.message)
                }
                ApiUtillity.sharedInstance.StopProgress(view: self.view)
                self.homeTblView.reloadData()
            }) { (failed) in
                self.view.makeToast(failed.localizedDescription)
                ApiUtillity.sharedInstance.StopProgress(view: self.view)
            }
        }else {
            self.view.makeToast("No internet connection...")
            ApiUtillity.sharedInstance.StopProgress(view: self.view)
        }
    }
}
extension HomeViewController: UITableViewDelegate, UITableViewDataSource {
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return couponsData.count
    }
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "HomeCell", for: indexPath) as! HomeCell
        let dict = couponsData[indexPath.row]
        if let postTitle = dict.postTitle, postTitle.count != 0 {
            cell.ticket_postTitle.text = postTitle
        }
        if let postContent = dict.postContent, postContent.count != 0 {
            cell.ticket_postContent.text = postContent
        }
        if let storeName = dict.stores, storeName.count != 0 {
            cell.storename.text = storeName
        }
        let dateFormatterGet = DateFormatter()
        dateFormatterGet.dateFormat = "yyyy-MM-dd"
        let dateFormatterPrint = DateFormatter()
        dateFormatterPrint.dateFormat = "dd MMMM yyyy"
        let datee = ApiUtillity.sharedInstance.ConvertStingTodate(forApp: dict.validTill!)
        cell.ticket_ValidDate.text = dateFormatterPrint.string(from: datee)
        cell.ticketImageView.tintColor = .random()
        return cell
    }
    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return 339.0
    }
    func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
        return 339.0
    }
}

0

2 答案

匿名的 · Answer 1 · 2023-07-09T17:20:52+00:00

将一个整数数组转换为逗号分隔的字符串，需要将整数数组映射为字符串数组，然后使用逗号作为分隔符将数组连接起来。

解决方法如下：

params["term_ids"] = self.selectedIds.map(String.init).joined(separator: ",")

以上代码中，`self.selectedIds` 是一个整数数组，通过 `map` 方法将其转换为字符串数组，然后使用 `joined(separator: ",")` 方法将字符串数组连接成一个逗号分隔的字符串。

这样就可以将整数数组转换为逗号分隔的字符串了。

匿名的 · Answer 2 · 2023-08-26T06:42:24+00:00

在Swift中，将整数数组转换为逗号分隔的字符串是一个常见的需求。解决这个问题的方法如下：

首先，我们可以使用map函数将整数数组转换为字符串数组。在这个例子中，我们假设整数数组的名称是selectedIds。

selectedIds.map(String.init)

这将使用String.init将每个整数转换为字符串，并返回一个新的字符串数组。

接下来，我们可以使用joined(separator:)函数将字符串数组连接成一个单独的字符串。在这个例子中，我们将使用逗号作为分隔符。

selectedIds.map(String.init).joined(separator: ",")

这个表达式将返回一个逗号分隔的字符串，其中包含了整数数组中的所有元素。

通过以上的方法，我们可以很方便地将整数数组转换为逗号分隔的字符串。无论是在处理用户输入、生成日志信息还是其他类似的场景中，这个技巧都非常有用。