Android Question WebViewExtras2 version 2.20 sample codes

Erel

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• Aug 31, 2016

• #2

Moved to the questions forum.

 

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Erick Kalugdan

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• Aug 31, 2016

• #3

Do you have the URL of the "questions forum"?

 

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DonManfred

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• Aug 31, 2016

• #4

https://www.b4x.com/android/forum/forums/android-questions.26/

 

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Erel

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• Aug 31, 2016

• #5

You should go over the library thread. It will answer most or all of your questions.

https://www.b4x.com/android/forum/t...oaded-website-into-webview.11232/#post-354156

https://www.b4x.com/android/forum/threads/webviewextras.12453/#content

 

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Erick Kalugdan

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• Sep 5, 2016

• #6

Was able to initialize, load URL, and execute a javascript in a WebView.

My remaining problem now is addJavascriptInterface doesn't seem to work with version 2.20. It's not calling the app's Sub's when I execute:

B4X:

<script>
function closeApp() {
 APP.CallSub("Logout", true);
}
</script>

Here's my app code:

B4X:

Sub Globals
    Dim LogonUrl As String = "file:///android_asset/test.htm"
    Dim WebView1 As WebView
    Dim WebViewExtras1 As WebViewExtras
End Sub

Sub Activity_Create(FirstTime As Boolean)
    WebView1.Initialize("WebView1")
    Activity.AddView(WebView1, 0, 0, 100%x, 100%y)
    WebView1.ZoomEnabled = False
    WebViewExtras1.Initialize(WebView1)
    WebViewExtras1.addJavascriptInterface(WebView1, "APP")
    WebView1.LoadUrl(LogonUrl)
End Sub

Sub Logout
    Activity.Finish
End Sub

 

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DonManfred

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• Sep 5, 2016

• #7

B4X:

    WebViewExtras1.addJavascriptInterface(WebView1, "APP")
    WebViewExtras1.addWebChromeClient(WebView1, "") ' <--

in my example there is one more line... Maybe this is needed!?

 

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Erick Kalugdan

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• Sep 5, 2016

• #8

I am using WebViewExtras2 version 2.20, not WebViewExtras version 1.42

Your code works with 1.42 but in 2.20 the IDE sends an error: Unknown member: addWebChromeClient

 

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DonManfred

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• Sep 5, 2016

• #9

you are right. works with 1.42. Does not work with 2.2

 

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An Schi

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• Sep 5, 2016

• #10

This is just from memory and i am not at my pc, so i might be wrong.
I think in version 2 you have to use something like 'setdefaultchromeclient'.

 

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Erick Kalugdan

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• Sep 5, 2016

• #11

1. Does the ChromeClient have anything to do with the addJavascriptInterface? I just need my javascript to be able to run Sub's in my app just like version 1.42 does with CallSub

2. I believe the ChromeClient is only used for the logs?

 

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peacemaker

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• Jan 13, 2017

• #12

So, still no solution for working addJavascriptInterface in v.2.20 ?
It works in Android < 4.4, but still no in 4.4+

 

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eps

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• Apr 12, 2017

• #13

This seems to work for me... I've just moved from 1.42 to 2.20... Not sure if @peacemaker can add some more info about it not working...

 

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R

ronell

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• Apr 12, 2017

• #14

Erick Kalugdan said:

a. How to load a URL
b. How to check if there is error 404
c. How to execute Javascript in the WebView
d. How Javascript in the WebView can call a Sub in B4A

Click to expand...

all issue solved?

 

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