Any chance of getting the communication from Unity to Flutter in iOS?

[sinano1107]

I really want to get messages from Unity in Flutter.
This package doesn't support it, but is there any possibility of supporting it in the future?

Do you have any alternatives?
Is it possible to implement, for example, writing to a local file from Unity and importing it from Flutter?

[SachinGanesh]

We had the same issue. We created a local web server in Flutter and shared messages through HTTP protocol. You can check the built app here: https://www.youtube.com/watch?v=A56gVrDAXbU

http_server: any

Future _startWebServer() async {
    runZoned(() async {
      server = await HttpServer.bind(
        InternetAddress.loopbackIPv4,
        11223,
      );
      await for (var request in server) {
        handleRequest(request);
      }
    }, onError: (e, stackTrace) => print('Oh noes! $e $stackTrace'));
  }

[olenirwing]

How did you verify it cannot work? We are trying to get it to work, but somehow the message that is received is always just the first one, just as described here: #107 (comment)

Is that the error that you are referring to?

[sinano1107]

?
About not being able to receive messages from Unity in Flutter on iOS?
Here's #31 (comment) where the developer says it's not compatible with iOS.
I haven't tried this feature, so I don't know what errors actually occur, but so far it shouldn't have been fixed.

[sinano1107]

We had the same issue. We created a local web server in Flutter and shared messages through HTTP protocol. You can check the built app here: https://www.youtube.com/watch?v=A56gVrDAXbU

http_server: any

Future _startWebServer() async {
    runZoned(() async {
      server = await HttpServer.bind(
        InternetAddress.loopbackIPv4,
        11223,
      );
      await for (var request in server) {
        handleRequest(request);
      }
    }, onError: (e, stackTrace) => print('Oh noes! $e $stackTrace'));
  }

Are you a genius?
I'll give it a try, thank you!

[sinano1107]

@SachinGanesh
Show me an example of simple Unity code.
I'm not sure how it works...

[SachinGanesh]

@SachinGanesh
Show me an example of simple Unity code.
I'm not sure how it works...

Example code to send video URL back to Flutter app

private IEnumerator UploadPath(string path)
{
        UnityWebRequest www = UnityWebRequest.Post("http://127.0.0.1:11223/record/store", path);
        yield return www.SendWebRequest();

        if (www.isNetworkError || www.isHttpError)
        {
            Debug.Log(www.error);
        }
        else
        {
            Debug.Log("Video link upload complete!");
        }
        yield return null;
}

[sinano1107]

@SachinGanesh
How did you receive the [path] data from Unity in Flutter?
I was able to receive the URI but that's the only part I don't understand.

[TarekMedhat]

I really want to get messages from Unity in Flutter.
This package doesn't support it, but is there any possibility of supporting it in the future?

Do you have any alternatives?
Is it possible to implement, for example, writing to a local file from Unity and importing it from Flutter?

This Package supports messages both ways from Unity to flutter and flutter to unity.
I am using it myself and works both on ios/android

Add UnityMessageManager Support
Copy UnityMessageManager.cs to your unity project.
Copy this folder JsonDotNet to your unity project.
Copy link.xml to your unity project.

Check their example https://github.com/juicycleff/flutter-unity-arkit-demo.
I'm using/copied Editor scripts, UnityMessageManager.cs, JsonDotNet, link.xml from this example.

[sinano1107]

@TarekMedhat
That was it!
That was good. I'll give it a try.
But why don't they go into more detail in the Readme?

[sinano1107]

@TarekMedhat
How do you use UnityMessageManager?
I was able to eliminate the error by pasting the code, but I don't know how to use it specifically.
When I looked for it, I couldn't find the part that sends the message to the example either...
Can you give me the specific code?

[sinano1107]

An example was found in another repository.
That's all right.
They were both very helpful! Thank you!

[TarekMedhat]

An example was found in another repository.
That's all right.
They were both very helpful! Thank you!

You are welcome, Can you share the other example link that you found?

[sinano1107]

I found a use case in line 32 of this code