Android Question Blank Webpage with WebView

[ernschd]

Hello,

I am trying to load a web page (Home Assistant) on my tablet (Teclast T10 / Android 7.0). However, after login, the webpage does not display any content, only a white page.
Apparently the tablet has its own webview implementation (com.android.webview) instead of the one from Google (com.google.android.webview) - I installed this from the PlayStore.
In the developer settings I can only select "com.android.webview" as webview. If I call the page via the installed Chrome browser, everything works as desired.

I have also tried using WebViewExtras and WebChromeClient, but also without success:

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    Private WebView1 As WebView
    Private wwe As WebViewExtras
    Private WebChromeClient1 As DefaultWebChromeClient
End Sub

Sub Activity_Create(FirstTime As Boolean)
    Activity.LoadLayout( Layout)   
    wwe.Initialize(WebView1)   
    WebChromeClient1.Initialize("WebChromeClient1")
    wwe.SetWebChromeClient(WebChromeClient1)

    wwe.JavaScriptEnabled = True
    wwe.LoadUrl("http://homeassistant.local:8123")
End Sub

Private Sub WebChromeClient1_ConsoleMessage(ConsoleMessage1 As ConsoleMessage) As Boolean
    Log(ConsoleMessage1.Message)
    Return True
End Sub

I do get error messages displayed from the console, but they come up even with the login page still working:

*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
Failed to set referrer policy: The value 'same-origin' is not one of 'always', 'default', 'never', 'no-referrer', 'no-referrer-when-downgrade', 'origin', 'origin-when-crossorigin', or 'unsafe-url'. This document's referrer policy has been left unchanged.
The key "viewport-fit" is not recognized and ignored.
Uncaught SyntaxError: Unexpected token import
Uncaught SyntaxError: Unexpected token import
Uncaught ReferenceError: globalThis is not defined
The key "viewport-fit" is not recognized and ignored.
Uncaught SyntaxError: Unexpected token import
** Here is the part after the login **
Failed to set referrer policy: The value 'same-origin' is not one of 'always', 'default', 'never', 'no-referrer', 'no-referrer-when-downgrade', 'origin', 'origin-when-crossorigin', or 'unsafe-url'. This document's referrer policy has been left unchanged.
The key "viewport-fit" is not recognized and ignored.
Uncaught SyntaxError: Unexpected token import
Uncaught SyntaxError: Unexpected token import
Uncaught ReferenceError: globalThis is not defined

It doesn't work with the WebkitLibrariesSet either.

Do I have any other option?
Could I call Chrome in a panel, or does Android not allow that?

Thanks a lot in advance.

 

[Erel]

Could I call Chrome in a panel,

No.

Worth trying with a different device running a newer version of Android.