Using MethodChannel to invoke Flutter method from Kotlin

[Jeff W]

Hi, I am modernizing an Android app UI to use Flutter for screen design.  My android app used the Google Nearby API to find local IOT devices.  Since there doesn't seem to be a package yet for the Nearby API, I was trying to use MethodChannel to start discovery, and I am able to successfully invoke methods in Kotlin from Flutter.  The problem is I now need to close the loop, and invoke Flutter methods from Kotlin Callback methods to pass data to show on the UI.  

In this Wiki page https://flutter.io/platform-channels/ it alludes to the fact that you can easily do the reverse "Note: If desired, method calls can also be sent in the reverse direction, with the platform acting as client to methods implemented in Dart."  But I am struggling to get it working.  Can anyone point me at a code example of Java / Kotlin calling into Flutter?

Thanks in advance

[Todd Volkert]

Hi Jeff,

Check out the quick_actions plugin, which shows you how to call from Java back into Dart.

Dart-side callback registration here.  Java-side method invocation here.

Cheers,

-T

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[Jeff W]

Thanks Todd

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