How to transfer data from java module to flutter when using FlutterActivity?

Question

When encapsulating a module on flutter in an existing application in java and using FlutterActivity, I had the problem of passing of string. If using variant:

Button mInvokeFlutterActivity = findViewById(R.id.invoke_flutter_activity);
mInvokeFlutterActivity.setOnClickListener(v -> startActivity(
        FlutterActivity.withNewEngine().initialRoute(link).build(context)
                .putExtra("background_mode", "opaque")
                .putExtra("destroy_engine_with_activity", true)
));

then in main.dart, can catch the link variable as window.defaultRouteName. But if use another intent:

 Button mInvokeFlutterActivity = findViewById(R.id.invoke_flutter_activity);
 mInvokeFlutterActivity.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
         startActivity(FlutterActivity.withCachedEngine("my_engine_id").build(context)           
        );
    }
});

then using window.defaultRouteName will become impossible. Can anyone tell me how to solve the problem?

Dino Moreira · Accepted Answer · 2021-01-05 12:05:38Z

1

"The concept of an initial route is available when configuring a FlutterActivity or a FlutterFragment with a new FlutterEngine. However, FlutterActivity and FlutterFragment don’t offer the concept of an initial route when using a cached engine. This is because a cached engine is expected to already be running Dart code, which means it’s too late to configure the initial route."

https://flutter.dev/docs/development/add-to-app/android/add-flutter-screen

answered Jan 5, 2021 at 12:05

Dino Moreira

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Comments

Khalifa Alkhatre · Accepted Answer · 2020-06-20 03:48:53Z

0

Use invoke method to get data from Java or Kotlin, read this article to understand how to use it.

edited Jun 20, 2020 at 3:48

user10539074

answered Jun 15, 2020 at 8:44

Khalifa Alkhatre

77 bronze badges

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