Question

我有下面的代码，用于使用alamofire从api中提取数据。我只是拉了＃34;标题＆＃34; 。并追加它。我想要的是如何从api获取所有数据，包括id，body和all，但只会在单元格上附加名称，我不希望显示所有数据。只有当您选择了单元格＃（indexPath.item）时，才会显示数据的详细信息！其详细信息将在警报中显示。我有下面的警报代码。例如，我获得所有数据，但我只显示＆＃34;标题＆＃34;在单元格上，当我单击单元格时，它将显示其数据，就像我点击标题哪个indexpath为1然后它将显示该标题的ID，正文和所有细节。谢谢。

alert

let alert = UIAlertController(title: "\(titleArray[indexPath.row])", message: "", preferredStyle:
                                    UIAlertControllerStyle.alert)
                                let subview = (alert.view.subviews.first?.subviews.first?.subviews.first!)! as UIView

                                subview.backgroundColor = UIColor(red: 93/255, green: 173/255, blue: 195/255, alpha: 1.0)

                                alert.view.tintColor = UIColor.black
                                alert.addAction(UIAlertAction(title: "Cancel", style: UIAlertActionStyle.cancel, handler: nil))
                                alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { [weak alert] (_) in
                                    //                        let textField = alert?.textFields![0] // Force unwrapping because we know it exists.
                                    //
                                    //                        if textField?.text != ""{
                                    //                            print("Text field: \(textField?.text!)")
                                    //                            self.saveDataInCoreData(nameOfGroccery: (textField?.text)!)
                                    //                            self.setUpCollectionView()
                                    //                        }
//
//                                    item.isSelected = true
                                    print("oo")
                                }))
                                self.present(alert, animated: true, completion: nil)

api样本

{ ＆＃34; userId＆＃34;：1，＆＃34; id＆＃34;：1，＆＃34; title＆＃34;：＆＃34; sunt autrerere repellat provident occaecati excepturi optio reprehenderit＆＃34;，＆＃34; body＆＃34;：＆＃34; quia et suscipit \ nsuscipit recusandae consequuntur expedita et cum \ nreprehenderit molestiae ut ut quas totam \ nnostrum rerum est autem sunt rem eveniet architecto＆＃34; }，

import UIKit
import Alamofire



class MenuCollectionViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {

    var titleArray = [String]()

    @IBOutlet var collectionView: UICollectionView!
    @IBAction func signOutButtonIsPressed(_ sender: Any) {
        let appDelegate : AppDelegate = UIApplication.shared.delegate as! AppDelegate
        appDelegate.showLoginScreen()
    }
    @IBOutlet var signoutButton: UIButton!
    var items = [Item]()

    override func viewDidLoad() {
        super.viewDidLoad()

        self.signoutButton.layer.cornerRadius = 3.0
        demoApi()
    }

    override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)

        self.navigationController?.navigationBar.isHidden = true
        self.navigationItem.hidesBackButton =  true

    }

    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return titleArray.count
    }


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

       let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath) as! CollectionCell
        cell.nameLabel.text = titleArray[indexPath.row]
        return cell
    }



    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        // handle tap events
        print("You selected cell #\(indexPath.item)!")
    }

    func demoApi() {
        Alamofire.request("https://jsonplaceholder.typicode.com/posts", method: .get, parameters: nil, encoding: JSONEncoding.default, headers: nil).responseJSON { (response:DataResponse<Any>) in

            switch(response.result) {
            case .success(_):
                guard let json = response.result.value as! [[String:Any]]? else{ return}
                print("Response \(json)")
                for item in json {

                    if let title = item["title"] as? String {
                        self.titleArray.append(title)
                    }

                    DispatchQueue.main.async {
                        self.collectionView.reloadData()
                    }
                }
                break

            case .failure(_):
                print("Error")
                break

            }
        }

    }

}


class CollectionCell: UICollectionViewCell {

    @IBOutlet weak var imgPhoto: UIImageView!
    @IBOutlet weak var nameLabel: UILabel!


}

Answer 1

喜欢

<强>步骤1

在当前类中创建字典数组

var getAllDetail: [[String:Any]] = [[String:Any]]()

<强>步骤-2

将您的iterate dict附加到名为getAllDetail的新Dict数组

 case .success(_):
            guard let json = response.result.value as! [[String:Any]]? else{ return}
            print("Response \(json)")
            for item in json {

                  getAllDetail.append(item)

               // if let title = item["title"] as? String {
                 //   self.titleArray.append(title)
               // }

            }
             if !getAllDetail.isEmpty{
                DispatchQueue.main.async {
                    self.collectionView.reloadData()
                }
                } 
            break

<强>步骤-3

最后将该值附加到您的集合视图

 func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return getAllDetail.count
    }


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

       let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath) as! CollectionCell
        if let getTempDetails: [String : Any] = getAllDetail[indexPath.row] {
        cell.nameLabel.text = getTempDetails["title"] as? String  ?? "" //titleArray[indexPath.row]
          }
        return cell
    }



    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {

        // handle tap events
        print("You selected cell #\(indexPath.item)!")
        if let getTempDetails: [String : Any] = getAllDetail[indexPath.row] {
           print("You selected ID #\( getTempDetails["userId"] as? String  ?? "" )!")
    }

    }

从api获取所有数据以及如何仅在swift ios中的单元格上附加标题

1 个答案: