Android Question why B4A.CallSub inside class not work?

Jim2025

Member
inside class:

codes: 
' inside another sub for initilize
wve.Initialize(webv)
Dim WebChromeClient1 As DefaultWebChromeClient
WebChromeClient1.Initialize("WebChromeClient1")
wve.SetWebChromeClient(WebChromeClient1)
    
private Sub webv_PageFinished (Url As String)
' wve is same webviewextras

'This alert code work good :
'wve.ExecuteJavascript("document.querySelector('.nav-bar').innerHTML='<nav class=""navbar-widgets-right navbar-widgets-section"" onclick=""alert(\'test\');"">-</nav>';")

'but B4A.CallSub not work !!!
wve.ExecuteJavascript("document.querySelector('.nav-bar').innerHTML='<nav class=""navbar-widgets-right navbar-widgets-section"" onclick=""B4A.CallSub(\'clicked\',false);"">-</nav>';")


webv.Visible=True
wve.ClearCache(True)
End Sub

Sub clicked()
    ToastMessageShow("body clicked.",False)
End Sub

why clicked sub not work?
how can i solve this problem? i just want to call clicked sub on click generated html dynamically.
 
Solution
Strange, I had already sent the answer and the problem was solved, but I saw the same thread again and it seems that the answer was deleted!!! I'll answer again.

Problem solved
I replaced the WebViewExtras 2.20 library with a lower version library WebViewExtras 1.42 and also modified some code, the problem seemed to be a bug in the higher version library of WebViewExtras 2.20 version


changed codes: 
' added quitbtn class name to special button
wve.ExecuteJavascript(webv,"document.querySelector('.nav-bar').innerHTML='<nav class=""navbar-widgets-right navbar-widgets-section""><button class=""quitbtn kt-button kt-button--inlined kt-button--circular"" Type=""button"" tabindex=""0""><i class=""kt-icon kt-icon-logout kt-button__icon...
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Jim2025

Member
I also tried with the following codes, but clicked still doesn't get called. Why? How can I solve this problem?
B4X: 
    wve.Initialize(webv)
    Dim WebChromeClient1 As DefaultWebChromeClient
    WebChromeClient1.Initialize("WebChromeClient1")
    wve.SetWebChromeClient(WebChromeClient1)
    wve.AddJavascriptInterface(webv, "B4A")
    webv.LoadUrl(Address)
    
    private Sub webv_PageFinished (Url As String)
        ' these three ways not work too
        wve.ExecuteJavascript("B4A.CallSub('clicked',true);")
        wve.ExecuteJavascript("document.querySelector('.nav-bar').addEventListener('click', event => {B4A.CallSub('clicked',true)});")
        wve.ExecuteJavascript("document.querySelector('.nav-bar').addEventListener('click',function(){B4A.CallSub('clicked',true);});")
    End Sub
    
    Sub clicked()
        ToastMessageShow("test",False)
    End Sub
 
Upvote 0

Jim2025

Member
Strange, I had already sent the answer and the problem was solved, but I saw the same thread again and it seems that the answer was deleted!!! I'll answer again.

Problem solved
I replaced the WebViewExtras 2.20 library with a lower version library WebViewExtras 1.42 and also modified some code, the problem seemed to be a bug in the higher version library of WebViewExtras 2.20 version


changed codes: 
' added quitbtn class name to special button
wve.ExecuteJavascript(webv,"document.querySelector('.nav-bar').innerHTML='<nav class=""navbar-widgets-right navbar-widgets-section""><button class=""quitbtn kt-button kt-button--inlined kt-button--circular"" Type=""button"" tabindex=""0""><i class=""kt-icon kt-icon-logout kt-button__icon no-pointer-event""></i></button></nav>';")

' added click event to quitbtn class name
wve.ExecuteJavascript(webv,"document.querySelector('.quitbtn').addEventListener('click', event => {B4A.CallSub('processclick',true, 'quit','')});")

Sub processclick(msg As String,url As String)
    ... codes here  ...
End Sub
 
Last edited:
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