Android Question Webview ssl problem

[molder26]

Hello guys, i am having problems with a url with ssl certificate, i try with Ctrl + B, HU2_ACCEPTALL and only get a white screen.
Thank you in advance!
Regards

 

[JohnC]

Is the certificate a self-signed one?

 

[molder26]

no, is buyed. the url is wordpress can be a problem of this?

 

[JohnC]

You already added the chromeclient to webview as in my tip #1 in my below signature, right?

 

[drgottjr]

you title the thread "webview..." technically, HU2_ACCEPTALL has nothing to do with webview. and "white screen" has nothing to do with what HU2_ACCEPTALL is supposed to address. how did you go about getting to the white screen?

 

[molder26]

chromeclient

Activity.LoadLayout("Main")
Dim jwv As JavaObject = WebView1
Dim view As JavaObject
view.InitializeStatic("android.view.View")
jwv.RunMethod("setOverScrollMode", Array(view.GetField("OVER_SCROLL_NEVER")))
WebView1.LoadUrl("https://www.url.com")

I saw chromeclient is with webviewextras right?

 

[JohnC]

I saw chromeclient is with webviewextras right?

Yes, this link shows you how to do it:

Viewing a video in realtime

Step 1 The following code displays a realtime video from a local IP webcam : webview1.Initialize("webview1") Activity.AddView (webview1,0,0,100%x,100%y) URL="http://admin:@192......1/video2.mjpg" ' OK (va bene in locale, con wifi webview1.LoadUrl(URL) Step 2 The following HTML code...

www.b4x.com

 

[molder26]

JohnC i did it:

wve.addWebChromeClient(WebView1, "WVE")
WebView1.LoadUrl("https://www.google.com")

With google.com work, but with my https://url.com doesnt work. In android chrome work well the url.
Thank you in advance

 

[JohnC]

If your app works with https://google.com but not with your wordpress URL, then try viewing a different wordpress website in your app.

If another wordpress website works, then I would look into the theme of your wordpress site to see how it handles mobile visitors.

 

[molder26]

i saw this error in logs:

ResponseError. Reason: javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found., Response:

 

[JohnC]

Oh, a certificate problem could definitely cause the white screen.

Try this:

1. Try going into your device and go into the "Security" settings, then view the list of "Trusted credentials".
2. Look for an entry that says "AddTrust" - there may be multiple entries.
3. Try disabling the one that says "AddTrust External CA Root"
4. Reboot your device and see if it will work now.

 

[drgottjr]

there is a way to get webview to ignore ssl issues, but HU2_ACCEPTALL is not actually it. you use HU2_ACCEPTALL with httputils2.
you download the url with httpjob.download (after setting hclient HU2_ACCEPTALL). that should get you the html. check the download first (hint: log it).
assuming you actually get something, load that into the webview.

to use the webview directly, you need to consume the onReceivedSslError event. if you know how to do that, fine. otherwise, try what's in the first paragraph. if job.download gets you nothing, then the problem may be elsewhere. show us the httpjob code and explain exactly what you did to set HU2_ACCEPTALL. we'll go from there.

 

[molder26]

there is a way to get webview to ignore ssl issues, but HU2_ACCEPTALL is not actually it. you use HU2_ACCEPTALL with httputils2.
you download the url with httpjob.download (after setting hclient HU2_ACCEPTALL). that should get you the html. check the download first (hint: log it).
assuming you actually get something, load that into the webview.

to use the webview directly, you need to consume the onReceivedSslError event. if you know how to do that, fine. otherwise, try what's in the first paragraph. if job.download gets you nothing, then the problem may be elsewhere. show us the httpjob code and explain exactly what you did to set HU2_ACCEPTALL. we'll go from there.

I try with onReceivedSslError but i only can find WebViewExtras 1.42 in the forum and onReceivedSslError need WebViewExtras2.

 

[JohnC]

WebviewExtras2 has a method to ignore SSL errors, but I have not worked with it before.

I wanted to see if disabling that credential works first because it's a known problem that started on 5/30/20, then explore the webviewextras2 method.

 

[cenyu]

Do you need to load https page ?
I have too...but solve this problem with this WebViewExtras2 lib
http://b4a.martinpearman.co.uk/webviewextras/

If you still have problem i will send you my code

 

[cenyu]

This is my working code...
You have to download lib from http://b4a.martinpearman.co.uk/webviewextras/

Then:

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module.

    Private WebView1 As WebView
    Private we As WebViewExtras
 
 
End Sub

Sub Activity_Create(FirstTime As Boolean)
    'Do not forget to load the layout file created with the visual designer. For example:
    Activity.LoadLayout("Layout1")
 
    we.Initialize(WebView1)
    Dim client As DefaultWebViewClient
    client.Initialize("client")
    we.SetWebViewClient(client)
    WebView1.LoadUrl("https://192.168.0.200/")
 

End Sub

Sub client_ReceivedSslError(SslErrorHandler1 As SslErrorHandler, SslError1 As SslError)
    Log(SslError1)
    SslErrorHandler1.Proceed
End Sub

The Sub client_ReceivedSslError is very important! Without this sub nothings work!

Good luck

 

[molder26]

Hello cenyu
First, thank you for your time.

You have to download lib from http://b4a.martinpearman.co.uk/webviewextras/

The link is dead, do you have other link to download it?
Regards

 

[cenyu]

No, this link is not dead!
Try again

http://b4a.martinpearman.co.uk/webviewextras/
You have to open and then download zip file from it

If you still have problems with this link i will upload webviewextras on other location and send you new link

 

[molder26]

Thanks to all, it's working now!
Regards

 

[cenyu]

No problems...Glad to help you!