[iOS] https://www.eyes.co.kr/mohae/mohae_view/547

[Android] https://m.enuri.com/knowcom/detail.jsp?kbno=1335653&bbsname=nuri 

class CustomBuildPipeline : MonoBehaviour, IPreprocessBuildWithReport, IPostprocessBuildWithReport
{
    public int callbackOrder => 0;

    // CALLED BEFORE THE BUILD
    public void OnPreprocessBuild(BuildReport report)
    {
        // Start listening for errors when build starts
        Application.logMessageReceived += OnBuildError;
    }

    // CALLED DURING BUILD TO CHECK FOR ERRORS
    private void OnBuildError(string condition, string stacktrace, LogType type)
    {
        if (type == LogType.Error)
        {
            // FAILED TO BUILD, STOP LISTENING FOR ERRORS
            Application.logMessageReceived -= OnBuildError;
        }
    }

    // CALLED AFTER THE BUILD
    public void OnPostprocessBuild(BuildReport report)
    {
        // IF BUILD FINISHED AND SUCCEEDED, STOP LOOKING FOR ERRORS
        Application.logMessageReceived -= OnBuildError;
    }
}

[출처] https://stackoverflow.com/questions/58840114/unity-editor-detect-when-build-fails

String Format for Int [C#]

Integer numbers can be formatted in .NET in many ways. You can use static method String.Format or instance method int.ToString. Following examples shows how to align numbers (with spaces or zeroes), how to format negative numbers or how to do custom formatting like phone numbers.

Add zeroes before number

To add zeroes before a number, use colon separator „:“and write as many zeroes as you want.

[C#]

String.Format("{0:00000}", 15);          // "00015"
String.Format("{0:00000}", -15);         // "-00015"

Align number to the right or left

To align number to the right, use comma „,“ followed by a number of characters. This alignment option must be before the colon separator.

[C#]

String.Format("{0,5}", 15);              // "   15"
String.Format("{0,-5}", 15);             // "15   "
String.Format("{0,5:000}", 15);          // "  015"
String.Format("{0,-5:000}", 15);         // "015  "

Different formatting for negative numbers and zero

You can have special format for negative numbers and zero. Usesemicolon separator „;“ to separate formatting to two or three sections. The second section is format for negative numbers, the third section is for zero.

[C#]

String.Format("{0:#;minus #}", 15);      // "15"
String.Format("{0:#;minus #}", -15);     // "minus 15"
String.Format("{0:#;minus #;zero}", 0);  // "zero"

Custom number formatting (e.g. phone number)

Numbers can be formatted also to any custom format, e.g. like phone numbers or serial numbers.

[C#]

String.Format("{0:+### ### ### ###}", 447900123456); // "+447 900 123 456"
String.Format("{0:##-####-####}", 8958712551);       // "89-5871-2551"

출처 http://www.csharp-examples.net/examples/

With recent Unity versions (2020, 2021 and 2022) Flutter Android builds will take a lot longer, because it also has to compile the IL2CPP code from Unity.

From the Readme:

• Android builds takes forever to complete Unity 2022.1.*, remove these lines from unityLibrary/build.gradle filecommandLineArgs.add("--enable-debugger")
  commandLineArgs.add("--profiler-report")
  commandLineArgs.add("--profiler-output-file=" + workingDir + "/build/il2cpp_"+ abi + "_" + configuration + "/il2cpp_conv.traceevents")

Here is some testing to check how to speed things up.

Unity settings

IL2CPP Code Generation

• Build Settings -> IL2CPP Code Generation: select Faster (smaller) builds instead of Faster runtime.
• Or C# EditorUserBuildSettings.il2CppCodeGeneration = UnityEditor.Build.Il2CppCodeGeneration.OptimizeSize;

C++ compiler configuration

• In Player settings -> Other settings -> configuration, select Debug.
• Or C# PlayerSettings.SetIl2CppCompilerConfiguration(BuildTargetGroup.Android, Il2CppCompilerConfiguration.Debug);

Disable script debugging

Don't bother setting this in the Unity settings, it will be overridden by the build script.
Assets/FlutterUnityIntegration/Editor/build.cs
In the function DoBuildAndroid() remove the line enabling script debugging.
playerOptions.options = BuildOptions.AllowDebugging;
This is the same as removing commandLineArgs.add("--enable-debugger") from the build.gradle file after an export.

Measuring results

When you run a Flutter build, there are multiple IL2CPP stages that report their duration, with 2 sections taking far longer than all others.
We can compare these build durations when using different settings in Unity.

Log of the slow armv7 and arm64 sections

Starting: Z:\fuw20221.1.0+7\2021\example\android\unityLibrary\src\main\Il2CppOutputProject\IL2CPP\build\deploy\bee_backend\win-x64\bee_backend.exe --profile="Z:/fuw20221.1.0+7/2021/example/android/unityLibrary/build/il2cpp_armeabi-v7a_Release/il2cpp_cache/buildstate/backend_profiler1.traceevents" --stdin-canary --dagfile="Z:/fuw20221.1.0+7/2021/example/android/unityLibrary/build/il2cpp_armeabi-v7a_Release/il2cpp_cache/buildstate/bee.dag" --continue-on-failure --dagfilejson="Z:/fuw20221.1.0+7/2021/example/android/unityLibrary/build/il2cpp_armeabi-v7a_Release/il2cpp_cache/buildstate/bee.dag.json" FinalProgram
WorkingDir: Z:/fuw20221.1.0+7/2021/example/android/unityLibrary/build/il2cpp_armeabi-v7a_Release/il2cpp_cache/buildstate
ExitCode: 0 Duration: 2m:04s
Build succeeded with 553 successful nodes and 0 failed ones

Starting: Z:\fuw20221.1.0+7\2021\example\android\unityLibrary\src\main\Il2CppOutputProject\IL2CPP\build\deploy\bee_backend\win-x64\bee_backend.exe --profile="Z:/fuw20221.1.0+7/2021/example/android/unityLibrary/build/il2cpp_arm64-v8a_Release/il2cpp_cache/buildstate/backend_profiler1.traceevents" --stdin-canary --dagfile="Z:/fuw20221.1.0+7/2021/example/android/unityLibrary/build/il2cpp_arm64-v8a_Release/il2cpp_cache/buildstate/bee.dag" --continue-on-failure 
--dagfilejson="Z:/fuw20221.1.0+7/2021/example/android/unityLibrary/build/il2cpp_arm64-v8a_Release/il2cpp_cache/buildstate/bee.dag.json" FinalProgram
WorkingDir: Z:/fuw20221.1.0+7/2021/example/android/unityLibrary/build/il2cpp_arm64-v8a_Release/il2cpp_cache/buildstate
ExitCode: 0 Duration: 2m:03s
Build succeeded with 553 successful nodes and 0 failed ones

Results

The exact durations here aren't important, as this will be different of every computer and project setup.
This is after flutter clean and a fresh Unity export. Any subsequent runs will be faster because of caching.

Flutter build apk, with an export from Unity 2021.3.5f1 in android/unityLibrary on Windows 10.

Settingarmv7 durationarm64 duration

Conclusion

My advice is to add this to the build script in DoBuildAndroid() for any test or debug builds, remove it for final release builds.

//Assets/FlutterUnityIntegration/Editor/build.cs
bool isReleaseBuild = false;

#if UNITY_2022_1_OR_NEWER
    PlayerSettings.SetIl2CppCompilerConfiguration(BuildTargetGroup.Android, isReleaseBuild ? Il2CppCompilerConfiguration.Release : Il2CppCompilerConfiguration.Debug);
    PlayerSettings.SetIl2CppCodeGeneration(UnityEditor.Build.NamedBuildTarget.Android, UnityEditor.Build.Il2CppCodeGeneration.OptimizeSize);
#elif UNITY_2021_2_OR_NEWER
    PlayerSettings.SetIl2CppCompilerConfiguration(BuildTargetGroup.Android, isReleaseBuild ? Il2CppCompilerConfiguration.Release : Il2CppCompilerConfiguration.Debug);
    EditorUserBuildSettings.il2CppCodeGeneration = UnityEditor.Build.Il2CppCodeGeneration.OptimizeSize;
#endif

If it doesn't affect your workflow, disable script debugging.

// playerOptions.options = BuildOptions.AllowDebugging;

And if you are developing on an arm64 device anyway, temporarily remove the armv7 build target from the Unity player settings.

[출처] https://github.com/juicycleff/flutter-unity-view-widget/issues/643

[링크] https://magnuxx.tistory.com/entry/jenkins-job-%EB%B3%B5%EC%82%AC%EC%83%88%EB%A1%9C%EC%9A%B4-item-%EB%B3%B5%EC%82%AC

[링크] https://recordsoflife.tistory.com/1002

Unity 2021.3.23f1 이후

Unity 2022 이후

----

Unity 2021.3.23f1 부터 유니티 에디터가 (Unity 2021.3.23f1 버전부터) *.androidlib를 폴더가 아닌 파일로 보게 변경된 후,

(관련 이슈 : https://issuetracker.unity3d.com/issues/macos-meta-files-are-created-inside-a-bundle-when-its-imported-into-the-project)

*.androidlib나 *.dll 등의 파일을 Import 하거나 git 등에서 pull 받고 유니티를 재실행하면 제목과 같이 Rever Factory Settings 설정 팝업등이 뜨면서 무한 루프에 빠진다.

이를 해결하기 위해서는 Library 폴더를 삭제 후 유니티를 켜서 Library를 새로 생성하게 하면 되는데

전체를 다시 생성하려면 시간이 너무 오래걸린다.

확인해보니 아래 파일 2개만 삭제하면 된다고 한다.

에디터 종료 후, 아래 파일 2개를 삭제하고 에디터를 다시 실행해보자.

[Library에서 삭제할 파일]

- ./Library/SourceAssetDB

- ./Library/SourceAssetDB-lock

[요약]

1) Tags { "Queue"="Transparent" "RenderType" = "Opaque" }

2) #pragma surface surf Lambert alpha

----------------------------------------------------------------------------

Three steps:

Add objects rendered with this shader to the Transparent queue by adding “Queue”=“Transparent” to the subshader’s Tags list.
Add “alpha” to the surface function declaration, after the lighting function declaration, so the line becomes “#pragma surface surf Lambert alpha”
Actually set the alpha to something in the surface function, i.e. set o.Alpha = whatever you want.
I have done these modifications and used the _ColorTint’s alpha channel in the example. Then the shader becomes this:

Shader "-smn-/GlowingBorder" {
    Properties {
       _ColorTint("ColorTint", Color) = (1,1,1,1)
       _MainTex("Main Texture", 2D) = "white" {}
       _BumpMap("Normal Map", 2D) = "bump" {}
       _RimColorOuter("Rim Color Outer", Color) = (1,1,1,1)
       _RimColorInner("Rim Color Inner", Color) = (1,1,1,1)
       _RimPowerOuter("Rim Power Outer", Range(0.0, 7.0)) = 3.0
       _RimPowerInner("Rim Power Inner", Range(0.0, 20.0)) = 3.0
    }
    SubShader {
       Tags { "Queue"="Transparent" "RenderType" = "Opaque" }
 
 
       CGPROGRAM
       #pragma surface surf Lambert alpha
 
       struct Input {
         float4 color : COLOR;
         float2 uv_MainTex;
         float2 uv_BumpMap;
         float3 viewDir;
       };
 
       float4 _ColorTint;
       sampler2D _MainTex;
       sampler2D _BumpMap;
       float4 _RimColorOuter;
       float4 _RimColorInner;
       float _RimPowerOuter;
       float _RimPowerInner;
 
       void surf (Input IN, inout SurfaceOutput o) {
         IN.color = _ColorTint;
         o.Albedo = tex2D(_MainTex, IN.uv_MainTex).rgb * IN.color;
         o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_BumpMap));
 		 o.Alpha = _ColorTint.a; // For example. Could also be the alpha channel on the interpolated vertex color (IN.color.a), or the one from the texture.
		
         half rimOuter = 1.0 -saturate(dot(normalize(IN.viewDir), o.Normal));
         half rimInner = saturate(dot(normalize(IN.viewDir), o.Normal));
         o.Emission = (_RimColorOuter.rgb * pow(rimOuter, _RimPowerOuter)) + (_RimColorInner.rgb * pow(rimInner, _RimPowerInner)) ;
       }
       ENDCG
    } 
    FallBack "Diffuse"
}

[출처] https://discussions.unity.com/t/how-can-i-add-alpha-channel-to-this-shader/100942

[링크] https://liveupdate.tistory.com/308

유니티 (Unity)에서 멀티 키 딕셔너리 (Multi Key Dictionary)를 사용하는 방법에 대해 검색 결과를 제공해드리겠습니다.

멀티 키 딕셔너리는 두 개 이상의 키로 값을 저장하고 검색할 수 있는 자료구조입니다. 유니티에서는 기본적으로 이러한 기능을 제공하지 않지만, 다음과 같은 방법을 사용하여 멀티 키 딕셔너리를 구현할 수 있습니다:

Tuple을 사용한 멀티 키 딕셔너리 구현: Tuple을 이용하여 여러 키를 하나의 키로 묶고, 해당 키에 대한 값을 딕셔너리에 저장하는 방식입니다. 이렇게 하면 여러 키로 값을 조회하거나 저장할 수 있습니다.

using System;
using System.Collections.Generic;

public class MultiKeyDictionary<TKeyTuple, TValue>
{
    private Dictionary<TKeyTuple, TValue> dictionary = new Dictionary<TKeyTuple, TValue>();

    public void Add(TKeyTuple keys, TValue value)
    {
        dictionary[keys] = value;
    }

    public bool TryGetValue(TKeyTuple keys, out TValue value)
    {
        return dictionary.TryGetValue(keys, out value);
    }
}

// 사용 예시
var multiKeyDict = new MultiKeyDictionary<(int, string), int>();
multiKeyDict.Add((1, "key1"), 100);
multiKeyDict.Add((2, "key2"), 200);

if (multiKeyDict.TryGetValue((1, "key1"), out int result))
{
    Debug.Log("Value found: " + result);
}

C# 9의 init-only 프로퍼티와 튜플 사용: C# 9부터 init-only 프로퍼티를 사용하여 딕셔너리의 값을 읽기 전용으로 설정하고, 튜플을 활용하여 멀티 키를 표현할 수 있습니다.

using System;
using System.Collections.Generic;

public class MultiKeyDictionary<TValue>
{
    private Dictionary<(int, string), TValue> dictionary = new Dictionary<(int, string), TValue>();

    public void Add(int key1, string key2, TValue value)
    {
        dictionary[(key1, key2)] = value;
    }

    public IReadOnlyDictionary<(int, string), TValue> Dictionary => dictionary;
}

// 사용 예시
var multiKeyDict = new MultiKeyDictionary<int>();
multiKeyDict.Add(1, "key1", 100);
multiKeyDict.Add(2, "key2", 200);

if (multiKeyDict.Dictionary.TryGetValue((1, "key1"), out int result))
{
    Debug.Log("Value found: " + result);
}

이렇게 유니티에서 멀티 키 딕셔너리를 구현할 수 있습니다. 코드는 예시일 뿐이며, 실제 프로젝트에서 적절한 방식으로 적용하셔야 합니다.

[출처] ChatGPT

[참조] https://stackoverflow.com/questions/1171812/multi-key-dictionary-in-c