Android Question Modify pop message in webview

[warayTek]

Hello there! Can a popup message be modified when a logout button is pressed in Webview?
Here is the code below.

Sub Activity_Create(FirstTime As Boolean)
    
    Activity.LoadLayout("Layout")
    
    WebView1.Initialize("WebView1")
    
    Activity.AddView(WebView1, 0, 0, 100%x, 100%y)
    
    
    ime1.Initialize("IME1")
    ime1.AddHeightChangedEvent
    WebView1.LoadUrl("https://dlrl.xxxxx.com")
    WebView1.JavaScriptEnabled = True
    MyWebViewExtras.addWebChromeClient(WebView1, "")
    
    ProgressDialogShow("loading...")
    Dim jo As JavaObject = Activity
    jo.RunMethodJO("getContext", Null).RunMethodJO("getWindow", Null).RunMethod("setSoftInputMode", _
     Array As Object(0x20))
    
End Sub