Grant notification access via ADB This might seem weird, but I installed a regular Android app using ADB to my Huawei Watch 2 and the app requires notification access which when attempting in app causes it to crash as it trys to open the settings to allow it's access which doesn't exist in the settings.

I just need to grant this one permission in order to get the app to work
For Android 9 or above use this:

adb shell cmd notification allow_listener com.mypackage.app/com.mypackage.app.mylistener


For any other Android version below 9 use this: 

adb shell settings put secure enabled_notification_listeners %nlisteners: com.example.myapplication/com.example.myapplication.service.ServiceNotificationIntercept