B4J Question b4j_raiseEvent cann't work in a webview ?

[jinyistudio]

Hi
I have a B4A application as a remote client. It has a Webview1 open /app/index.html from remote application(B4J). The index.html will send "b4j_raiseEvent" to B4j every 1 sec. I test it OK in firefox browser.
Why i cann't do it with webview of the B4A ?

p.s Websocket is work !

$(function() {

setInterval(function(){b4j_raiseEvent("datas_refresh", {})},1000);

});

B4j code

    Private Sub datas_refresh(Params As Map)
    Dim jt1,jt2,jt3 As JQueryElement
    Dim n1 As Int=0
    Dim s1 As String = DateTime.Date(DateTime.now)&" "&DateTime.time(DateTime.now)  
   
    ws.GetElementById("update1").SetText("update : " & s1)
    For i=1 To 8
        jt1 = ws.GetElementById("low"&i)
        jt2 = ws.GetElementById("tmp"&i)
        jt3 = ws.GetElementById("high"&i)
       
        jt1.SetHtml(cell(16,NumberFormat(Main.plc_v0(n1+1),0,3)))
        jt2.SetHtml(cell(16,NumberFormat(Main.plc_v0(n1+0),0,3)))
        jt3.SetHtml(cell(16,NumberFormat(Main.plc_v0(n1+2),0,3)))
       
        If Main.plc_v2(i-1)=0 Then ' normal
            jt2.SetCSS("background-color","")
            jt2.SetCSS("color","black")   
        else if Main.plc_v2(i-1)>0 Then ' high
            jt2.SetCSS("background-color","#F73A1A")
            jt2.SetCSS("color","#FFFFFF")
        Else ' low
            jt2.SetCSS("background-color","#FFFF5B")
            jt2.SetCSS("color","black")
        End If
       
        n1=n1+3
    Next
End Sub

B4a Code

    Sub Activity_Create(FirstTime As Boolean)
    Activity.LoadLayout("1")
    If FirstTime Then
        WebView1.Initialize("webview1")
        Activity.AddView(WebView1,0dip,100dip,100%x, 100%y)
        wsh.Initialize(Me, "wsh")
    End If   
End Sub

Html page code

    $( document ).ready(function() {
        b4j_connect("/app/ws");       
    });
    $(function() {
        setInterval(function(){b4j_raiseEvent("datas_refresh", {})},1000);
    });

 

[Daestrum]

Could you not get the server to update the page on a timer, as it's connected by web socket, the new data should show immediately on the device.

 

[Erel]

Note that only Android 4.4+ Webview support websockets. You can instead use WebSocketHandler: https://www.b4x.com/android/forum/threads/websocket-client-library.40221/#content