Not working from API 26 (Android 8.0) and higher APIs (27 and 28)

[raul9410]

Bug

Plugin Version:
Platform API 26 (Android Oreo 8.0) API 27 (Android Oreo 8.1) and 28 (Android Pie 9.0)
Device/Hardware:

Expected behavior

Receiving a popup notification

Actual behavior

When SendButton is Clicked a toast message appears with the message:
"Developer warning for package "LocalNotificationsSample.Droid"
Failed to post notification on channel "null"
See log for more details"

Steps to reproduce the behavior

Set the API level to 26 or higher and run the project

Feature Request

When you target Android 8.0 (API level 26) or higher, you must implement one or more notification channels to display notifications to your users.
Check this for more details: https://stackoverflow.com/questions/45711925/failed-to-post-notification-on-channel-null-target-api-is-26

[edsnider]

Support for 26+ with notification channels was added in version 3.0.1 of the plugin. See: 12d5de0

Which version of the plugin are you using? (you left it out of the bug report)

[AntvissMedia]

I can confirm it works just fine on all 3 API levels mentioned.