如何在swift2中下载页面，而不使用第三方库？ [英] How to download a page in swift2 without using third party libraries?

问题描述

我正试图在应用程式中显示下载的HTML页面。请说明最简单的方式，不用任何第三方图书馆。

I am trying to show the downloaded HTML page in the app. Please explain the simplest way to do so without using any third party libraries.

欢呼，

推荐答案

您应该使用NSURLSession dataTaskWithURL异步下载您的网站数据：

You should use NSURLSession dataTaskWithURL to download your website data asynchronously:

import UIKit

class ViewController: UIViewController {

    let stackoverflowLink = "https://stackoverflow.com/questions/36315798/how-to-download-a-page-in-swift2-without-using-third-party-libraries"

    override func viewDidLoad() {
        super.viewDidLoad()
        guard let url = NSURL(string: stackoverflowLink) else  { return }
        print("LOADING URL")
        NSURLSession.sharedSession().dataTaskWithURL(url) { (data, response, error) -> Void in
            guard
                let httpURLResponse = response as? NSHTTPURLResponse where httpURLResponse.statusCode == 200,
                let data = data where error == nil,
                let htmlCode = String(data: data, encoding: NSUTF8StringEncoding) // make sure you use the correct String Encoding
            else { return }
            print( htmlCode)
            print("URL LOADED")
        }.resume()
    }

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

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