使用 SWIFT 3 的单元格不显示没有 html 标记的更新 JSON

Posted 2023-03-15

【中文标题】使用 SWIFT 3 的单元格不显示没有 html 标记的更新 JSON

【英文标题】：Cell not showing updated JSON without html tags with SWIFT 3

【发布时间】：2016-11-10 16:19:03

【问题描述】：

我有一个项目，使用 Alamofire、Swift 和 Xcode。我有来自 web url 作为 JSON 的数据。 JSON 很好，但在我的单元格中，它仍然显示 html 标签，但是当我打印到控制台时，HTML 标签不存在。我确定我在代码中的单元级别做错了，但似乎看不到它是什么。代码如下：有帮助吗？

代码

import UIKit
import Alamofire

struct postinput 
    let mainImage : UIImage!
    let name : String!
    let author : String!
    let summary : String!





class TableViewController: UITableViewController 

    var postsinput = [postinput]()

    var mainURL = "https://www.example.com/api"

    typealias JSONstandard = [String : AnyObject]

    override func viewDidLoad() 
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        callAlamo(url: mainURL)
    

    func callAlamo(url : String)
        Alamofire.request(url).responseJSON(completionHandler: 
            response in

            self.parseData(JSONData: response.data!)


        )

    

    func parseData(JSONData : Data) 
        do 
            var readableJSON = try JSONSerialization.jsonObject(with: JSONData, options: .mutableContainers) as! JSONstandard
            // print(readableJSON)

            if let posts = readableJSON["posts"] as? [JSONstandard] 
                for post in posts 
                    let title = post["title"] as! String

                    let author = post["author"] as! String

                    guard let dic = post["summary"] as? [String: Any], let summary = dic["value"] as? String else 
                        return
                    
                    let str = summary.replacingOccurrences(of: "<[^>]+>", with: "", options: .regularExpression, range: nil)
                    print(str)




                    print(author)

                    if let imageUrl = post["image"] as? String 
                        let mainImageURL = URL(string: imageUrl )
                        let mainImageData = NSData(contentsOf: mainImageURL!)
                        let mainImage = UIImage(data: mainImageData as! Data)

                        postsinput.append(postinput.init(mainImage: mainImage, name: title, author: author, summary: summary))
                    
                
                DispatchQueue.main.async 
                    self.tableView.reloadData()
                
            


        


        catch 
            print(error)
        


    




    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int 
        return postsinput.count
    

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell 
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell")

        // cell?.textLabel?.text = titles[indexPath.row]

        let mainImageView = cell?.viewWithTag(2) as! UIImageView

        mainImageView.image = postsinput[indexPath.row].mainImage

        //(cell?.viewWithTag(2) as! UIImageView).image = postsinput[indexPath.row].mainImage

        let mainLabel = cell?.viewWithTag(1) as! UILabel

        mainLabel.text = postsinput[indexPath.row].name

        mainLabel.font = UIFont(name: "Helvetica", size:14)

        let autLabel = cell?.viewWithTag(3) as! UILabel

        autLabel.text = postsinput[indexPath.row].author

        autLabel.font = UIFont(name: "Helvetica", size:12)

        let sumLabel = cell?.viewWithTag(4) as! UILabel

        sumLabel.text = postsinput[indexPath.row].summary

        sumLabel.font = UIFont(name: "Helvetica", size:12)


        //(cell?.viewWithTag(3) as! UILabel).text = postsinput[indexPath.row].author

        return cell!
    

    override func didReceiveMemoryWarning() 
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    

【参考方案1】：

这里改一下

let sumLabel = cell?.viewWithTag(4) as! UILabel
sumLabel.text = postsinput[indexPath.row].summary

到这里

let sumLabel = cell?.viewWithTag(4) as! UILabel
let str = postsinput[indexPath.row].summary
sumLabel.text = str.replacingOccurrences(of: "<[^>]+>", with: "", options: .regularExpression, range: nil)