rx-swift - 反应式 Swift 使用来自 API 的实时数据 - 需要基本示例

Question

我是 RxSwift 的新手，我正在寻找一个基本示例，说明如何在来自后端的控制台实时数据流中进行打印。我有一个后端每 1 秒传输一些虚拟数据，我可以通过 curl 请求看到它，我希望能够在控制台中自动观察和订阅并打印出来，请帮忙！

Answer 1

我假设您正在打开与服务器的套接字连接以接收实时数据。您可以使用RxWebSocket来处理此数据流。API 的文档/自述文件中有示例。

Answer 2

https://github.com/daltoniam/Starscream/tree/master/examples/SimpleTest/SimpleTest

import UIKit
import Starscream

class ViewController: UIViewController, WebSocketDelegate {
var socket: WebSocket!

@IBOutlet weak var label: UILabel!
@IBOutlet weak var textField: UITextField!

override func viewDidLoad() {
    super.viewDidLoad()
    var request = URLRequest(url: URL(string: "wss://echo.websocket.org")!)
    request.timeoutInterval = 5
    socket = WebSocket(request: request)
    socket.delegate = self
    socket.connect()
}

// MARK: Websocket Delegate Methods.

func websocketDidConnect(socket: WebSocketClient) {
    print("websocket is connected")
}

func websocketDidDisconnect(socket: WebSocketClient, error: Error?) {
    if let e = error as? WSError {
        print("websocket is disconnected: \(e.message)")
    } else if let e = error {
        print("websocket is disconnected: \(e.localizedDescription)")
    } else {
        print("websocket disconnected")
    }
}

func websocketDidReceiveMessage(socket: WebSocketClient, text: String) {
    self.label.text = text
    print("Received text: \(text)")
}

func websocketDidReceiveData(socket: WebSocketClient, data: Data) {
    print("Received data: \(data.count)")
}

// MARK: Write Text Action

@IBAction func send(_ sender: UIButton) {
    socket.write(string: "Hello \(textField.text!)")
}

// MARK: Disconnect Action

@IBAction func disconnect(_ sender: UIBarButtonItem) {
    if socket.isConnected {
        sender.title = "Connect"
        socket.disconnect()
    } else {
        sender.title = "Disconnect"
        socket.connect()
    }
}

}

extension URL {
    init(staticString string: StaticString) {
        guard let url = URL(string: "\(string)") else {
            preconditionFailure("Invalid static URL string: \(string)")
        }

        self = url
    }
}