callExternalMethod

Note this is relevant for developers who are integrating Ensemble with their flutter apps

Utilize the callExternalMethod action to call a method in your Flutter app. Ensemble allows you to pass Flutter methods into the framework at the time you instantiate EnsembleApp.

Example of registering openApp method that's implemented in Flutter

See how to embed (opens in a new tab) Ensemble platform in your existing flutter app (opens in a new tab)

  //assuming you have a flutter method called openApp
  Map<String, Function> methods = {
    //appId, screenId and props will be provided by the EDL code when invoking the callExternalMethod action
    'openApp': ({appId, screenId, props}) => openApp(appId!, screenId, props)
  };
 
//following code is from https://github.com/EnsembleUI/ensemble/blob/main/starter/lib/main.dart
void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  initErrorHandler();
  await EnsembleModules().init();
  runApp(EnsembleApp(
      externalMethods: methods //this is how you can specify one or more Flutter methods that could be invoked from within EDL
    ));
}

Here's how to invoke the openApp method we registered earlier.

View:
  Column:
    children:
      - Button:
          label: Open App
          onTap:
            callExternalMethod:
              name: openApp
              payload:
                appId: appId
                screenId: screenId

Alternatively you can call it in code as follows -

            ensemble.callExternalMethod({
              name: "openApp",
              payload: {
                appId: appId,
                screenId: screenId
              },
            });

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