SSL Errors causes WebView to show blank page - Android

[Iyashu5040]

Gingerbread does not see Facebook's security certificate as valid, and any SSL error in a webview causes it to stop loading the page. Unfortunately, GB still runs on a large amount of devices out there. The solution to this problem is the following: Override the OnReceivedSSLError method of the WebViewClient as such

    public override void OnReceivedSslError(WebView view, SslErrorHandler handler,SslError error)
    {
    handler.Proceed();
    }

I've tested this and it allows the Facebook login page to display correctly on GB devices. I know it's not very secure, I'm working on a more fine tuned version which I'll post if I get it working.

[Iyashu5040]

I've tweaked the solution, it now presents the user with an error message and prompts them to continue or cancel. (Tested working on an HTC Desire running CyanogenMod 7.2.0.1 - Android 2.3.7)

public override void OnReceivedSslError(WebView view, SslErrorHandler handler, SslError error)
            {
                AlertDialog.Builder builder = new AlertDialog.Builder(this.activity);
                AlertDialog ad = builder.Create();
                string message = "Certificate error.";
                switch (error.PrimaryError)
                {
                    case SslErrorType.Untrusted:
                        message = "Certificate is untrusted."; break;
                    case SslErrorType.Expired:
                        message = "Certificate has expired."; break;
                    case SslErrorType.Idmismatch:
                        message = "Certificate ID is mismatched."; break;
                    case SslErrorType.Notyetvalid:
                        message = "Certificate is not yet valid."; break;
                }
                message += " Do you want to continue anyway?";
                ad.SetTitle("SSL Certificate Error");
                ad.SetMessage(message);
                ad.SetButton("OK", (sender, args) =>
                                       {
                                           handler.Proceed();
                                       });
                ad.SetButton2("Cancel", (sender, args) =>
                                            {
                                                handler.Cancel();
                                                activity.Finish();
                                            });
                ad.SetIcon(Android.Resource.Drawable.IcDialogAlert);
                ad.Show();
            }

[ermau]

Does the sample produce the same error? I haven't been able to reproduce the issue on a GB simulator.

[shahidaumar]

https://stackoverflow.com/questions/12034452/monodroid-webview-loading-ssl-page

[mdmota]

And for iOS? I need a solution

[Iyashu5040]

And for iOS? I need a solution

This issue was very specific to Android, relating to trusted SSL root certificates back in 2013. Any iOS issue is definitely unrelated to this. You should log a separate issue or look around for a solution to your problem on StackOverflow.