New example with Flutter <-> Unity communcation & iOS fixes

[thomas-stockx]

I've updated the example to include Flutter to Unity and Unity to Flutter communication so this PR
fixes #35
fixes #36
fixes #33
fixes #41

@krispypen made sure the example works on iOS, so this PR also
fixes #38
fixes #56
Probably also fixes #60

[krispypen]

🎉

[juicycleff]

@thomas-stockx and @krispypen you two are awesome. We can give you access too to manage stuff here, seeing how busy I am becoming

[thomas-stockx]

@juicycleff That would be nice :)

[juicycleff]

@thomas-stockx accept the invitation here https://github.com/snowballdigital/flutter-unity-view-widget/invitations

[juicycleff]

Thanks again we do appreciate it

[thomas-stockx]

Thanks man 👍

[rezajam]

I'm still having the following error:

Ld /Users/XXXXXXX/Library/Developer/Xcode/DerivedData/Runner-bajlhudeslpnyrbncvmddahlibcy/Build/Products/Debug-iphoneos/UnityFramework.framework/UnityFramework normal arm64
cd "/Users/XXXXXXX/Desktop/unity 2/flutter-unity-view-widget-master xport/example/ios/UnityExport"
export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -target arm64-apple-ios10.0 -dynamiclib -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.2.sdk -L/Users/XXXXXXX/Library/Developer/Xcode/DerivedData/Runner-bajlhudeslpnyrbncvmddahlibcy/Build/Products/Debug-iphoneos -L/Users/XXXXXXX/Desktop/unity\ 2/flutter-unity-view-widget-master\ xport/example/ios/UnityExport/Libraries -F/Users/XXXXXXX/Library/Developer/Xcode/DerivedData/Runner-bajlhudeslpnyrbncvmddahlibcy/Build/Products/Debug-iphoneos -filelist /Users/XXXXXXX/Library/Developer/Xcode/DerivedData/Runner-bajlhudeslpnyrbncvmddahlibcy/Build/Intermediates.noindex/Unity-iPhone.build/Debug-iphoneos/UnityFramework.build/Objects-normal/arm64/UnityFramework.LinkFileList -install_name @rpath/UnityFramework.framework/UnityFramework -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @loader_path/Frameworks -Xlinker -map -Xlinker /Users/XXXXXXX/Library/Developer/Xcode/DerivedData/Runner-bajlhudeslpnyrbncvmddahlibcy/Build/Intermediates.noindex/Unity-iPhone.build/Debug-iphoneos/UnityFramework.build/UnityFramework-LinkMap-normal-arm64.txt -dead_strip -Xlinker -object_path_lto -Xlinker /Users/XXXXXXX/Library/Developer/Xcode/DerivedData/Runner-bajlhudeslpnyrbncvmddahlibcy/Build/Intermediates.noindex/Unity-iPhone.build/Debug-iphoneos/UnityFramework.build/Objects-normal/arm64/UnityFramework_lto.o -Xlinker -no_deduplicate -fembed-bitcode-marker -stdlib=libc++ -fobjc-arc -fobjc-link-runtime -weak_framework CoreMotion -weak-lSystem -liPhone-lib -framework Security -framework MediaToolbox -framework CoreText -framework AudioToolbox -weak_framework AVFoundation -framework AVKit -framework CFNetwork -framework CoreGraphics -framework CoreMedia -weak_framework CoreMotion -framework CoreVideo -framework Foundation -framework OpenAL -framework OpenGLES -framework QuartzCore -framework SystemConfiguration -framework UIKit -liconv.2 -lil2cpp -weak_framework Metal -Xlinker -dependency_info -Xlinker /Users/XXXXXXX/Library/Developer/Xcode/DerivedData/Runner-bajlhudeslpnyrbncvmddahlibcy/Build/Intermediates.noindex/Unity-iPhone.build/Debug-iphoneos/UnityFramework.build/Objects-normal/arm64/UnityFramework_dependency_info.dat -o /Users/XXXXXXX/Library/Developer/Xcode/DerivedData/Runner-bajlhudeslpnyrbncvmddahlibcy/Build/Products/Debug-iphoneos/UnityFramework.framework/UnityFramework

Undefined symbols for architecture arm64:
"_onUnityMessage", referenced from:
_UnityMessageManager_onUnityMessage_mC3031C4585567E720F536DB4EE28B0C20AB8A7C4 in Assembly-CSharp.o
(maybe you meant: _UnityMessageManager_onUnityMessage_mC3031C4585567E720F536DB4EE28B0C20AB8A7C4)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

ANY help is greatly appreciated!

[leemuljadi]

Hi @thomas-stockx,

I have added the files and the code below to send message from Unity to Flutter:
Files:

Code:

 // This method is used to send data to Flutter
 UnityMessageManager.Instance.SendMessageToFlutter("The cube feels touched.");

But the message still not appearing, do I actually need to edit the file in Unity and export it to Android again or I can just edit it in Android Studio in my Flutter Project?

[thomas-stockx]

Every time you make a change to the Unity project, you need to export it again.

[krunduev]

I'm still having the following error:

Undefined symbols for architecture arm64:
"_onUnityMessage", referenced from:
_UnityMessageManager_onUnityMessage_mC3031C4585567E720F536DB4EE28B0C20AB8A7C4 in Assembly-CSharp.o
(maybe you meant: _UnityMessageManager_onUnityMessage_mC3031C4585567E720F536DB4EE28B0C20AB8A7C4)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

ANY help is greatly appreciated!

I have too.