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

问题描述

我在这里只看到了一些使用Objective-C的选项，但是我在使用XCode 6中的Swift iOS8时遇到了麻烦。我正在使用uiwebview来加载一个网站。例如，让我们说它的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，我将如何注入一个全新的样式表进入网站，所以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，我希望新的样式表存在于我的应用程序目录中。那个最好的目录在哪里？在支持文件？下而且，我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不加载网站也会很好。

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

推荐答案

所以，我认为至少有一种方法可以使用Swift为正在加载的网页添加样式：

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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