如何获取值json

本文介绍了如何获取值json的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在尝试创建一个应用程序

可保存来自Reddit的视频

此值

import UIKit struct Country:Decodable { let fallback_url: String } class ViewController: UIViewController { @IBOutlet weak var textUrl: UITextField! override func viewDidLoad() { super.viewDidLoad() } @IBAction func btnDownload(_ sender: Any) { let linkk = (textUrl.text!) let url = "\(linkk).json" let urlObj = URL(string: url) URLSession.shared.dataTask(with: urlObj!) { (data, response, error) in do { let countries = try JSONDecoder().decode([Country].self, from: data!) for country in countries { print(country.fallback_url) } } catch { print("Error") } }.resume() } }

www.reddit/r/iOS编程/评论/acmuxu/parallax_table_view_header/.json

请帮助我阅读该值 预先感谢

解决方案

我已经从 HERE 和 HERE 是您JSON的链接. /p>

您可以通过以下方式从响应中获得fallback_url:

@IBAction func btnDownload(_ sender: Any) { let url = "www.reddit/r/iOSProgramming/comments/acmuxu/parallax_table_view_header/.json" let urlObj = URL(string: url) URLSession.shared.dataTask(with: urlObj!) { (data, response, error) in do { let countries = try JSONDecoder().decode(Transactiondetails.self, from: data!) for country in countries { let childrens = country.data.children for child in childrens { if let secureMedia = child.data.secureMedia { let fallback_url = secureMedia.redditVideo.fallbackURL print(fallback_url) } } } } catch { print("Error") } }.resume() }

检出 DEMO 项目以获取更多信息.

I am trying to create an application

that saves video from Reddit

This value

import UIKit struct Country:Decodable { let fallback_url: String } class ViewController: UIViewController { @IBOutlet weak var textUrl: UITextField! override func viewDidLoad() { super.viewDidLoad() } @IBAction func btnDownload(_ sender: Any) { let linkk = (textUrl.text!) let url = "\(linkk).json" let urlObj = URL(string: url) URLSession.shared.dataTask(with: urlObj!) { (data, response, error) in do { let countries = try JSONDecoder().decode([Country].self, from: data!) for country in countries { print(country.fallback_url) } } catch { print("Error") } }.resume() } }

www.reddit/r/iOSProgramming/comments/acmuxu/parallax_table_view_header/.json

Please help me to read the value Thanks in advance

解决方案

I have created Codable from the JSON you provided from HERE And HERE is the link with your JSON.

And you can get fallback_url below way from response:

@IBAction func btnDownload(_ sender: Any) { let url = "www.reddit/r/iOSProgramming/comments/acmuxu/parallax_table_view_header/.json" let urlObj = URL(string: url) URLSession.shared.dataTask(with: urlObj!) { (data, response, error) in do { let countries = try JSONDecoder().decode(Transactiondetails.self, from: data!) for country in countries { let childrens = country.data.children for child in childrens { if let secureMedia = child.data.secureMedia { let fallback_url = secureMedia.redditVideo.fallbackURL print(fallback_url) } } } } catch { print("Error") } }.resume() }

Check Out DEMO project for more info.