Create new project or use the repo #49

Jairolaya12x · 2019-09-20T14:50:17Z

I follow all the steps for create my project and setup this, but when need add as library the .jar i don't have the same flow, and don't works the question is: Is necessary use the repo for create the unity plugin or should work with a new project create by me. because for example if open in android studio see different the project first variation

My project, (The icon under Project is a folder and the android folder have [name_android])

The repo (The icon under Project is flutter icon)

Add as library:

This is my project but don't show all the settings.

This is the window of the repo when try to add as library

Hope that anyone can help me with this please,

Thanks!

TarekMedhat · 2019-09-20T19:13:13Z

Hi @Jairolaya12x , You don't have to use the repo example project, you can create your own project.

Steps: 1- Add your unity project to "unity" folder
2- Export to Android, if succeeded a project named UnityExport will be added to the "android" folder
3- To add the jar library open the "android" project in a separate android studio window
4- File > New > New Module > Import .JAR/AAR Package > Select android/UnityExport/libs/unity-classes.jar, (That should create a folder android/unity-classes for you, if there is already a folder with that name delete it first so you can do this step)
5- Make sure that include ':unity-classes' and

include ":UnityExport"
project(":UnityExport").projectDir = file("./UnityExport")

are added to your settings.gradle file

6- If using Unity 2019.2 or older, open build.gradle of UnityExport module and remove these

bundle {
     language {
         enableSplit = false
     }
     density {
         enableSplit = false
     }
     abi {
         enableSplit = true
     }
 }

7- That's it, go back to your flutter project and run

Jairolaya12x · 2019-09-20T19:25:56Z

Great thanks i'll test and let you know, quick question what is the reason of the different icon?
And try using AR but don't works, maybe you have a reference? because i follow steps that the guide and don't works but suppose that making the modules like u say should works

juicycleff · 2019-09-22T21:16:12Z

@Jairolaya12x if you encounter any issues, please mention it here, The examples need to be updated too. As the library has moved a bit fare from it

Jairolaya12x · 2019-09-22T21:19:38Z

I don't found any issue yet, but the importation of libs how say @TarekMedhat works fine, the icon change and works like the guide in the tutorial, maybe add this solution in new tutorial for help other people, i'll make more test with AR and post any issue or problem Thanks!

MichealReed · 2019-10-06T20:42:05Z

I am trying to work with Unity's AR samples repository, but cannot seem to get the libraries linked up. Following @TarekMedhat 's method above, I added the unity_classes.jar and *.arr files to the UnityExport project, but still see this error:

   > Could not find :arcore_client:.
     Required by:
         project :flutter_unity_widget > project :UnityExport
   > Could not find :ARPresto:.
     Required by:
         project :flutter_unity_widget > project :UnityExport
   > Could not find :unityandroidpermissions:.
     Required by:
         project :flutter_unity_widget > project :UnityExport
   > Could not find :UnityARCore:.
     Required by:
         project :flutter_unity_widget > project :UnityExport

thomas-stockx · 2019-10-08T08:19:25Z

@MichealReed Have you followed the steps described here?

https://github.com/snowballdigital/flutter-unity-view-widget#ar-foundation-not-compatible-with-unity-20193

You'll need to create other modules for all AR dependencies (similar to how you added the unity_classes.jar).

MichealReed · 2019-10-08T12:30:17Z

Yes followed the outlined steps, but cannot get the libraries to recognize. I also tried tried approach of unpacking the .apk file for the libs, and set them in a lib/architecture/*.so hierarchy inside the unity export folder.

thomas-stockx · 2019-10-17T11:59:00Z

@MichealReed

Have you setup your modules like this?

You'll need to create a module for every .aar dependency that was in the UnityExport/libs folder, and be sure to add them to settings.gradle like so:

include ':app', ':unity-classes', ':arcore-client', ':unityandroidpermissions'

MichealReed · 2019-10-17T13:55:56Z

@thomas-stockx should include ':app', ':unity-classes', ':arcore-client', ':unityandroidpermissions' be in both the android project and UnityExport settings.gradle? In your screenshot, it seems the libraries were added to the android project.

If I remove the includes from the settings.gradle inside the UnityExport folder, it compiles, but the app posts a blank screen even with camera permissions givens.

thomas-stockx · 2019-10-17T14:15:23Z

@MichealReed Yes, they should be in the Android project, as we'll compile the whole project and not just the UnityExport module.

Do you seen any errors in logcat which could explain the blank screen?

leemuljadi · 2020-01-05T14:14:55Z

Hi @Jairolaya12x ,

I have tried following the instruction from @TarekMedhat, but the game still didn't show up in my own project app.
But I realise that I don't have the .setting folders and .project folder marked in red as below:

Does something has to do with it?

Thanks!

thomas-stockx · 2020-01-08T07:29:52Z

Hi @leemuljadi,

Those hidden folders are unrelated. Can you please state the compile or build error you're having?

leemuljadi · 2020-01-08T12:27:14Z

Hi @thomas-stockx,

Thanks for the reply.
It can compile with no error message, but the problem is, I use a button to call the UnityWidget class but the game doesn't show up when the button is pressed.

Code for the UnityWIdget Class:

import 'package:flutter/material.dart';
import 'package:flutter_unity_widget/flutter_unity_widget.dart';

class ShooterGame extends StatefulWidget {
  @override
  _ShooterGameState createState() => _ShooterGameState();
}

class _ShooterGameState extends State<ShooterGame> {
  static final GlobalKey<ScaffoldState> _scaffoldKey =
      GlobalKey<ScaffoldState>();
  UnityWidgetController _unityWidgetController;
  double _sliderValue = 0.0;

  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      key: _scaffoldKey,
//        appBar: AppBar(
//          title: const Text('Unity Flutter Demo'),
//        ),
      body: Card(
        margin: const EdgeInsets.all(8),
        clipBehavior: Clip.antiAlias,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(20.0),
        ),
        child: Stack(
          children: <Widget>[
            UnityWidget(
              onUnityViewCreated: onUnityCreated,
              isARScene: false,
              onUnityMessage: onUnityMessage,
            ),
//              Positioned(
//                bottom: 20,
//                left: 20,
//                right: 20,
//                child: Card(
//                  elevation: 10,
//                  child: Column(
//                    children: <Widget>[
//                      Padding(
//                        padding: const EdgeInsets.only(top: 20),
//                        child: Text("Rotation speed:"),
//                      ),
//                      Slider(
//                        onChanged: (value) {
//                          setState(() {
//                            _sliderValue = value;
//                          });
//                          setRotationSpeed(value.toString());
//                        },
//                        value: _sliderValue,
//                        min: 0,
//                        max: 20,
//                      ),
//                    ],
//                  ),
//                ),
//              ),
          ],
        ),
      ),
    );
  }

//  void setRotationSpeed(String speed) {
//    _unityWidgetController.postMessage(
//      'Cube',
//      'SetRotationSpeed',
//      speed,
//    );
//  }

  void onUnityMessage(controller, message) {
    print('Received message from unity: ${message.toString()}');
  }

  // Callback that connects the created controller to the unity controller
  void onUnityCreated(controller) {
    this._unityWidgetController = controller;
  }
}

thomas-stockx · 2020-01-08T13:19:39Z

Any logs to help me figure out what's going wrong?

Are you embedding your ShooterGame widget into another widget, or are you pushing a route to the ShooterGame widget? Do you see the widget in the layout inspector and/or does it have a width/height of 0?

This looks more like an implementation issue than a bug in the library.

leemuljadi · 2020-01-09T10:08:51Z

Hi @thomas-stockx,

Unfortunately there no log showing, even when I run in verbose.

Basically I just put the ShooterGame widget inside of the onPressed function of a MaterialButton as code below:

 return SafeArea(
      child: Scaffold(
        body: Center(
          child: MaterialButton(
              shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(AppScreen.s25)),
              onPressed: () => ShooterGame(),
              color: AppColor.secondary,
              child: Text('PLAY GAMES', style: AppTextStyle.boldWhite)),
        ),
      ),
    );

Does it has something to do with these?

thomas-stockx · 2020-01-09T10:27:44Z

Hi @leemuljadi,

onPressed: () => ShooterGame(), is not how you would instantiate a widget in your widget tree.

Either you use a state with a visibility boolean which you change with setState in your onPressed, or you push a new route to the ShooterGame widget.

You can find the documentation of pushing a new route here:
https://flutter.dev/docs/cookbook/navigation/navigation-basics

leemuljadi · 2020-01-09T12:20:18Z

Hi @thomas-stockx,

It does work now!!!
Thanks so much for your help!

But I got another problem that the app suddenly closed when exit the game.
I tried using navigator.push and navigator.pushreplacement, but it still produce the same error.

Error log:

E/flutter (19771): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: Looking up a deactivated widget's ancestor is unsafe.
E/flutter (19771): At this point the state of the widget's element tree is no longer stable.
E/flutter (19771): To safely refer to a widget's ancestor in its dispose() method, save a reference to the ancestor by calling dependOnInheritedWidgetOfExactType() in the widget's didChangeDependencies() method.
E/flutter (19771): #0      Element._debugCheckStateIsActiveForAncestorLookup.<anonymous closure> (package:flutter/src/widgets/framework.dart:3508:9)
E/flutter (19771): #1      Element._debugCheckStateIsActiveForAncestorLookup (package:flutter/src/widgets/framework.dart:3522:6)
E/flutter (19771): #2      Element.visitAncestorElements (package:flutter/src/widgets/framework.dart:3716:12)
E/flutter (19771): #3      Notification.dispatch (package:flutter/src/widgets/notification_listener.dart:61:13)
E/flutter (19771): #4      ScrollActivity.dispatchScrollEndNotification (package:flutter/src/widgets/scroll_activity.dart:106:63)
E/flutter (19771): #5      ScrollPosition.didEndScroll (package:flutter/src/widgets/scroll_position.dart:724:14)
E/flutter (19771): #6      ScrollPosition.beginActivity (package:flutter/src/widgets/scroll_position.dart:693:9)
E/flutter (19771): #7      ScrollPositionWithSingleContext.beginActivity (package:flutter/src/widgets/scroll_position_with_single_context.dart:116:11)
E/flutter (19771): #8      ScrollPositionWithSingleContext.goIdle (package:flutter/src/widgets/scroll_position_with_single_context.dart:131:5)
E/flutter (19771): #9      ScrollPositionWithSingleContext.goBallistic (package:flutter/src/widgets/scroll_position_with_single_context.dart:150:7)
E/flutter (19771): #10     DrivenScrollActivity._end (package:flutter/src/widgets/scroll_activity.dart:634:15)
E/flutter (19771): #11     _rootRun (dart:async/zone.dart:1122:38)
E/flutter (19771): #12     _CustomZone.run (dart:async/zone.dart:1023:19)
E/flutter (19771): #13     _FutureListener.handleWhenComplete (dart:async/future_impl.dart:163:18)
E/flutter (19771): #14     Future._propagateToListeners.handleWhenCompleteCallback (dart:async/future_impl.dart:650:39)
E/flutter (19771): #15     Future._propagateToListeners (dart:async/future_impl.dart:706:37)
E/flutter (19771): #16     Future._completeWithValue (dart:async/future_impl.dart:524:5)
E/flutter (19771): #17     Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:554:7)
E/flutter (19771): #18     _rootRun (dart:async/zone.dart:1126:13)
E/flutter (19771): #19     _CustomZone.run (dart:async/zone.dart:1023:19)
E/flutter (19771): #20     _CustomZone.runGuarded (dart:async/zone.dart:925:7)
E/flutter (19771): #21     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:965:23)
E/flutter (19771): #22     _microtaskLoop (dart:async/schedule_microtask.dart:43:21)
E/flutter (19771): #23     _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)

thomas-stockx · 2020-01-09T12:22:30Z

Hi @leemuljadi,

Sadly that's an issue with the current Android implementation of Unity as a Library, you can track that issue here: #46.

leemuljadi · 2020-01-09T12:33:42Z

Alright thanks so much @thomas-stockx.
Hopefully that this Android issue can be resolved soon :)

Jairolaya12x · 2020-01-31T23:52:35Z

Hi @thomas-stockx I created all the modules for AR Foundation in iOS works fine but in android get the same error that @MichealReed

Could not find :arcore_client:.
Required by:
project :flutter_unity_widget > project :UnityExport
Could not find :ARPresto:.
Required by:
project :flutter_unity_widget > project :UnityExport
Could not find :unityandroidpermissions:.
Required by:
project :flutter_unity_widget > project :UnityExport
Could not find :UnityARCore:.
Required by:
project :flutter_unity_widget > project :UnityExport

Any idea about this?

Thanks!

GokulDas027 · 2020-02-01T13:47:19Z

This issue have better instruction than at the readme, consider adding some more details to the readme.
I had plans to help with that, but I still haven't fixed setting up my project..😅😅

GokulDas027 · 2020-02-01T15:11:55Z

I don't have a settings.gradle file inside the UnityExport..

and having error

FAILURE: Build failed with an exception.

What went wrong:
Could not determine the dependencies of task ':app:preDebugBuild'.

Could not resolve all task dependencies for configuration ':app:debugRuntimeClasspath'.
Could not find :arcore_client:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport
Could not find :unityandroidpermissions:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport
Could not find :UnityARCore:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport

~~EDIT: It's solved after I replaced the unity-classes.jar file in the unity-classes folder with a copy of unity-classes.jar file from UnityExport~~

might be some misunderstandings, it came back.. the error is still there

bahadryalcn · 2020-07-23T23:58:36Z

I don't have a settings.gradle file inside the UnityExport..

and having error

FAILURE: Build failed with an exception.

What went wrong:
Could not determine the dependencies of task ':app:preDebugBuild'.

Could not resolve all task dependencies for configuration ':app:debugRuntimeClasspath'.
Could not find :arcore_client:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport
Could not find :unityandroidpermissions:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport
Could not find :UnityARCore:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport

~~EDIT: It's solved after I replaced the unity-classes.jar file in the unity-classes folder with a copy of unity-classes.jar file from UnityExport~~

might be some misunderstandings, it came back.. the error is still there

Is there any update on your project ? I am also getting this error.

I believe I could not import these jar and aar files as a module. I saw screenshot of @thomas-stockx . When i tried to import these files as a module I am also getting this error.

I will be waiting for your answer guys .

Soorya611 · 2020-08-03T16:01:31Z

I don't have a settings.gradle file inside the UnityExport..
and having error
FAILURE: Build failed with an exception.

What went wrong:
Could not determine the dependencies of task ':app:preDebugBuild'.

Could not resolve all task dependencies for configuration ':app:debugRuntimeClasspath'.
Could not find :arcore_client:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport
Could not find :unityandroidpermissions:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport
Could not find :UnityARCore:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport

~~EDIT: It's solved after I replaced the unity-classes.jar file in the unity-classes folder with a copy of unity-classes.jar file from UnityExport~~
might be some misunderstandings, it came back.. the error is still there

Is there any update on your project ? I am also getting this error.

I believe I could not import these jar and aar files as a module. I saw screenshot of @thomas-stockx . When i tried to import these files as a module I am also getting this error.

I will be waiting for your answer guys .

facing same issue. did you found any solution?

tm8981 · 2020-08-19T18:14:39Z

I don't have a settings.gradle file inside the UnityExport..
and having error
FAILURE: Build failed with an exception.

What went wrong:
Could not determine the dependencies of task ':app:preDebugBuild'.

Could not resolve all task dependencies for configuration ':app:debugRuntimeClasspath'.
Could not find :arcore_client:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport
Could not find :unityandroidpermissions:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport
Could not find :UnityARCore:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport

~~EDIT: It's solved after I replaced the unity-classes.jar file in the unity-classes folder with a copy of unity-classes.jar file from UnityExport~~
might be some misunderstandings, it came back.. the error is still there

Is there any update on your project ? I am also getting this error.

I believe I could not import these jar and aar files as a module. I saw screenshot of @thomas-stockx . When i tried to import these files as a module I am also getting this error.

I will be waiting for your answer guys .

facing same issue. did you found any solution?

Try updating the dependencies in unityExport's build.gradle to :

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
compile files('libs/arcore_client.aar')
compile files('libs/unityandroidpermissions.aar')
compile files('libs/UnityARCore.aar')
}

Jatin-Pawar · 2021-03-25T08:10:45Z

Simply follow the following steps:

Open the "android" folder as a project in Android Studio.
Now, try to import .aar files by File > New > New Module > Import .JAR/AAR Package > Select android/UnityExport/libs/arcore-client.aar (This should import the files without any error.)
After step 2, you can check your UnityExport/settings.gradle file to find out that include ':arcore_client'` has been added at the top. (If not kindly add it.)
Repeat the above 2 steps for all the .arr/.jar files in the UnityExport/libs folder.

This way you will be able to add all the .aar/.jar files and hence should not receive the below error.

Could not resolve all task dependencies for configuration ':app:debugRuntimeClasspath'.
Could not find :arcore_client:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport

Could not find :unityandroidpermissions:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport
Could not find :UnityARCore:.
Required by:
project :app > project :flutter_unity_widget > project :UnityExport

thomas-stockx added android This issue is specific to the Android Platform. ar-foundation labels Oct 17, 2019

leemuljadi mentioned this issue Jan 6, 2020

Android build failed #90

Closed

thomas-stockx closed this as completed Jan 9, 2020

leemuljadi mentioned this issue Jan 30, 2020

Unity to Flutter Messages not coming through #99

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mpfaff mentioned this issue Feb 2, 2020

App crashes immediately on Android #103

Closed

Auties00 mentioned this issue Apr 1, 2020

Failed to load 'libmain.so', the application will terminate. #125

Closed

Jairolaya12x mentioned this issue May 29, 2020

A problem occurred evaluating project ':flutter_unity_widget'. #150

Closed

bahadryalcn mentioned this issue Sep 19, 2020

Getting error on version 2.0.0 #209

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jamesncl mentioned this issue Oct 1, 2020

Unable to find OverrideUnityActivity #219

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chenenyu mentioned this issue Nov 25, 2020

Crash on Android #257

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IvanYue mentioned this issue Jul 14, 2022

[ERROR:flutter/lib/ui/ui_dart_state.cc(198)] Unhandled Exception: PlatformException(error, null, null, java.lang.NullPointerException #651

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yvz-dmr mentioned this issue Aug 14, 2022

openInNativeProcess() crashes app on android #674

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Create new project or use the repo #49

Create new project or use the repo #49

Jairolaya12x commented Sep 20, 2019

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Create new project or use the repo #49

Create new project or use the repo #49

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