How to get the user agent on iOS?

Question

Is there a way on iOS to get the user agent of the device? I don\'t want to hard code it since I need the user agent for all devices and I need to append the user agent to a

Answer 1

Swift 3.x, 4.x, 5.x, & above

As sometime traditional UIWebView get's memory leaked so instead use always WKWebView (far better from UIWebView)

import WebKit

var webViewForUserAgent: WKWebView?

and get userAgent by calling below function & you can also set it to your other variable

func getUserAgent() {

    webViewForUserAgent = WKWebView() // must initialize

    webViewForUserAgent?.evaluateJavaScript("navigator.userAgent") { (result, error) in

        //
        if error != nil {
            print("Error occured to get userAgent")
            return
        }

        //
        if let unwrappedUserAgent = result as? String {
            print("userAgent: \(unwrappedUserAgent)")
        } else {
            print("Failed to get userAgent")
        }
    }
}