bug: Webview not working on Android (APK)

[Nicoschmiko]

Duplicate Check

• I have searched the opened issues and there are no duplicates

Describe the bug

The example code from the Webview documantation doesn’t work. It’s just blank (gray) after the APK is built on Android.

Code sample

main.py

import flet_webview as fwv
import flet as ft

def main(page: ft.Page):

    page.add(

        fwv.WebView(

            url="https://flet.dev",

            on_page_started=lambda _: print("Page started"),

            on_page_ended=lambda _: print("Page ended"),

            on_web_resource_error=lambda e: print("WebView error:", e.data),

            expand=True,

        )

    )


ft.run(main)

requirements.txt

flet==0.81.0
flet-webview==0.81.0

To reproduce

flet build apk --android-permissions android.permission.INTERNET=true

Expected behavior

Webview showing

Screenshots / Videos

Operating System

Windows

Operating system details

Build on: Windows 11 arm64 and x64
Testet on: Android 16

Flet version

0.81.0

Regression

I'm not sure / I don't know

[ndonkoHenri]

Sorry for that. Its a regression which has now being fixed in #6238.
Please try the latest pre-release and let know: https://pypi.org/project/flet/#history

More details here: #6240

[Nicoschmiko]

Thanks for the reply. I tested version 0.81.1.dev7739 and 0.81.1.dev7752 and received the following error:

net::ERR_CACHE_MISS

[ndonkoHenri]

It likely comes from Android INTERNET permission not being properly applied. (ref)

Please rebuild with either:

• no --android-permissions flag (as INTERNET is default), or
• --android-permissions android.permission.INTERNET=True (capital T)

Then let know what you get.

[Nicoschmiko]

--android-permissions android.permission.INTERNET=True

Works many Thanks! :)

[ndonkoHenri]

Thanks for your feedback.

With the attached PR it will be made case insensitive.