I having an application which open the direction between two location in a webview using "http://maps.google.com" URL. but it is not working in iOS12. And also enabled the exceptional domain in App transport security plist value. Even though it is not working.
For me, the issue was caused by server trust check from the WKWebView.
To fix this I had to handle the challenge authentication callback and return a server trust credential.
Swift 4
func webView(_ webView: WKWebView,
didReceive challenge: URLAuthenticationChallenge,
completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void)
{
if(challenge.protectionSpace.authenticationMethod == NSURLAuthenticationMethodServerTrust)
{
let cred = URLCredential(trust: challenge.protectionSpace.serverTrust!)
completionHandler(.useCredential, cred)
}
else
{
completionHandler(.performDefaultHandling, nil)
}
}