Fix “err_unknown_url_scheme” error when using WebViewer

Bugs and Other Issues
,
1

I created an app with App Inventor and Web Viewer and when I click on the WhatsApp API icon I get the error
net::ERR_UNKNOWN_URL_SCHEME
Can anyone help me resolve this?

2
  1. Chek js is enable
  2. Use url properly formatted:

Example URL:

https://wa.me/1234567890?text=Hello

(official WhatsApp API)
or

whatsapp://send?phone=1234567890&text=Hello

(deep link)

3

If you want to open whatsapp dm using phone number, you can use activitystarter component:

acitivity-starter
acitivity-starter245×729 35.2 KB

I assume your url is like whatsapp://send?phone=12345678907text=hi so this block should work:

blocks
blocks1522×234 43.1 KB

4

Hi! nimafr. I created an app with App Inventor. It displays a webpage through a web viewer. The WhatsApp API icon is on the webpage, but when I try to open it through the app I created, it gives the error ERR_UNKNOWN_URL_SCHEME. Can you help me resolve this?

5

oh In that case make sure to use webview extensions with js enabled.