我正在尝试在我的应用上添加移动,桌面版网站功能.但问题是用户代理只在webView加载之前立即更改.在我的应用程序中,我添加了一个用于移动的按钮,第二个用于桌面版本站点UIWebView刚刚启动时选择用户代理.任何人都告诉我有没有办法在运行时更改用户代理.谢谢
var defaultUserAgent = String()
@IBOutlet weak var webView: UIWebView!
@IBOutlet weak var activityIndicator: UIActivityIndicatorView!
override func viewDidLoad() {
super.viewDidLoad()
let url = NSURL(string: "https://www.youtube.com")
let request = NSURLRequest(URL: url!)
activityIndicator.hidesWhenStopped = true
activityIndicator.startAnimating()
webView.loadRequest(request)
}
@IBAction func mobile(sender: AnyObject) {
NSUserDefaults.standardUserDefaults().registerDefaults(["UserAgent": defaultUserAgent])
print(defaultUserAgent)
let url = NSURL(string: "https://www.youtube.com")
let request = NSURLRequest(URL: url!)
activityIndicator.hidesWhenStopped = true
activityIndicator.startAnimating()
webView.loadRequest(request)
}
@IBAction func desktop(sender: AnyObject) {
NSUserDefaults.standardUserDefaults().registerDefaults(["UserAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/48.0.2564.109 Safari/537.36"])
let url = NSURL(string: "https://www.youtube.com")
let request = NSURLRequest(URL: url!)
activityIndicator.hidesWhenStopped = true
activityIndicator.startAnimating()
webView.loadRequest(request)
}
func webViewDidFinishLoad(webView: UIWebView) {
activityIndicator.stopAnimating()
print(webView.stringByEvaluatingJavaScriptFromString("navigator.userAgent"))
defaultUserAgent = webView.stringByEvaluatingJavaScriptFromString("navigator.userAgent")!
}
解决方法
我建议您使用
WkWebView而不是UIWebView,因为它相对更强大
iOS 9的WkWebView有一个直接的API
if #available(iOS 9,*) {
webViewObj.customUserAgent = "customUserAgentValue"
}
