使用 iOS8 Swift XCode 6 通过 uiwebview 将新样式表注入网站-移动开发问题

Injecting a new stylesheet into a website via uiwebview using iOS8 Swift XCode 6(使用 iOS8 Swift XCode 6 通过 uiwebview 将新样式表注入网站)

本文介绍了使用 iOS8 Swift XCode 6 通过 uiwebview 将新样式表注入网站的处理方法，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

我在这里看到了一些仅使用 Objective-C 的选项，但我在 XCode 6 中使用 Swift iOS8 执行此操作时遇到了问题.我正在使用 uiwebview 加载网站.例如，假设它的 google.com.

I've seen a few options on here using just Objective-C, but I'm having trouble doing this with Swift iOS8 in XCode 6. I'm using the uiwebview to load a website. For sake of example, let's say its google.com.

@IBOutlet var website: UIWebView!

var url = "http://www.google.com"

func loadUrl() {
    let requestURL = NSURL(string: url)
    let request = NSURLRequest(URL: requestURL!)
    website.loadRequest(request)
}

override func viewDidLoad() {
    super.viewDidLoad()
    website.delegate = self
    loadUrl()
}

func webViewDidFinishLoad(website: UIWebView) {
    var jsscript = "some script here"
    website.stringByEvaluatingJavaScriptFromString(jsscript)
}

使用 Swift，我如何将一个全新的样式表注入网站，以便我可以覆盖许多样式?

Using Swift, how would I inject a whole new stylesheet into the website so I can overwrite many of the styles?

另外，我希望新样式表存在于我的应用程序目录之一中.最好的目录在哪里?在支持文件?"下而且，我将如何在我的代码中调用该路径?

Also, I'd like the new stylesheet to exist in one of my app's directories. Where is the best directory for that to be? Under "Supporting files?" And, how would I call that path in my code?

如果在应用样式之前网站不加载也很好.

It would also be nice if the website wouldn't load until the styles had been applied.

推荐答案

所以，我想我至少找到了一种方法来完成将样式附加到使用 Swift 加载的网页:

So, I think I found at least one way to accomplish appending styles to the webpage being loaded using Swift:

  var loadStyles = "var script = 
  document.createElement('link');
  script.type = 'text/css';
  script.rel = 'stylesheet';
  script.href = 'http://fake-url/styles.css';
  document.getElementsByTagName('body')[0].appendChild(script);"

  website.stringByEvaluatingJavaScriptFromString(loadStyles)

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