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Notes on building products, mobile systems, SDKs, and AI-backed services.

Writing about software delivery, engineering decisions, platform edge cases, and the product lessons worth keeping.

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Jul 22, 2025 · 2 min read

What' is the mediapipe and Possible to use with unity

# 📌 What is MediaPipe? **MediaPipe** is a cross-platform, real-time machine learning framework developed by **Google**. It is mainly used for recognizing elements such as **human motion**, **hands**, and **faces** fr...

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May 02, 2025 · 1 min read

Building an AI Story App with ChatGPT and Unity

I’ve been thinking for a while about what kind of AI service I could create using ChatGPT and Unity. I wanted to learn more about AI naturally through the development process. So, I decided to build an app that generate...

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Jul 14, 2024 · 1 min read

How to set up ios target using Unity resolver

Currenlty I am using some iOS Native Sdks using Unity resolver and Cocopods There were one requeiments after build from unity edtor , it should set antoher iOS target not app's target Firebase and Adsmob's native sdk mo...

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Jul 06, 2024 · 2 min read

Data Collection and Storage apple iOS inapp review

Guideline 5.1.1(v) - Data Collection and Storage 5.1.1(v) Account Sign-In If your app doesn’t include significant account-based features, let people use it without a login. If your app supports account creation, you ...

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Jun 25, 2024 · 2 min read

Unity AVpro HLS Streaming playback with some events

I make an app using unity to support HLS Streaming Playback with Avpro plugin in company It was very useful and avpro provided good events to make some UI features E.g Callback called when seek operation is start or ...

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Jan 14, 2024 · 1 min read

Start research for vision pro

In order to develop a vision pro aplicaion , It has to use Swift UI which used for developed iOS and Mac Os App I studied based two blog posings in korean below and I have test some samples in swifit UI https://b...

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Jan 13, 2024 · 1 min read

Start research for vision pro

2024 February Apple rolling out first vr device a vision pro I am very excited and I am going to research to release for my first app in vision pro Let's do it...

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Apr 01, 2023 · 1 min read

unityads UnityMonetizaion h header not found

I am using google mediaion for monetization for app in company, Recently I have new requirment to add new ads network for Unity Ads network Like a normal ads network, I just intergated adpater sdk and enabled for unity ...

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Jan 16, 2023 · 1 min read

csharp convertall

https://school.programmers.co.kr/learn/courses/30/lessons/12939 Recently I solved the algorightm problem, min max value from programmars site While solveing the problem , it needed compareing process to change value...

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Jan 09, 2023 · 1 min read

Boxing and unboxing

Object format is reference type, It will save to heap Int and Double format is value type, It will save to stack if value data to save heap data containging box , it is boxing, In the opposite case, unboxing is the cas...

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Jan 04, 2023 · 1 min read

How to test AR Foundation sample

Hi There, Today I am going to share how to test ARfoundation sample code by unity AR Foundation enables you to create multi-platform augmented reality (AR) apps with Unity and it can use All AR features of each platfor...

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Nov 08, 2022 · 2 min read

How to set up for android icons using unity

Today I am going to share my ideas to set android app icons using Unity Edtior Look at the Unity Edtior setting window below PlayerSettings -> Player -> Android Tab -> Icon you can see how to set your app icons...

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Nov 02, 2022 · 1 min read

AR Foundation API

Major AR Packages in unity - AR Core - For Android - AR Kit - For iOS - AR Foundation - Unity AR API - XR Plugin management - Plugin management part AR Foundation capability Both Android and iOS ...

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May 31, 2022 · 1 min read

Swift String API

Check prefix and suffix var derrickName = "derrick" print(derrickName.hasPrefix("der")) print(derrickName.hasSuffix("ick")) Capital letter, upper case var convertedString: String = "" converte...

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Feb 20, 2022 · 1 min read

Gold name card from Remember service

Actually I am using some carleer services , linkedin and the remember I just registered my carleer profile at remember service. but they nominated as the person with the most scout offers for 2021 They gave me a gold...

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Feb 14, 2022 · 1 min read

How to make an excel file using POI Library

On the weekend, I am making the Toy Project app, a visit log app for corona epidemiologic investigations Got a new feature to export log data to excel file format, So I found a way to create excel file in android app T...

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Feb 03, 2022 · 1 min read

What is GraphQL ?

A query language for your API GraphQL is a query language for APIs and a runtime for fulfilling those queries with your existing data. GraphQL provides a complete and understandable description of the data in your API, g...

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Jan 17, 2022 · 1 min read

How to use unity as a library on iOS Native

I posted a posting on my company blog before https://medium.com/pinkfong/ios%EC%97%90%EC%84%9C-unity%EB%A5%BC-%EB%9D%BC%EC%9D%B4%EB%B8%8C%EB%9F%AC%EB%A6%AC%EB%A1%9C-%EC%82%AC%EC%9A%A9%ED%95%98%EA%B8%B0-2f3d5b9f081d...

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Jan 09, 2022 · 1 min read

Membership sdk development log

I posted a posting on my company blog before https://medium.com/smartstudy-tech/pinkfong-membership-sdk-%EA%B0%9C%EB%B0%9C-%ED%94%84%EB%A1%9C%EC%84%B8%EC%8A%A4-%EB%A7%8C%EB%93%A4%EA%B8%B0-9401e84b36b3...

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Oct 31, 2021 · 1 min read

Kotlin 코틀린 collection

1. From Java collection Pair - 값이 2개인 튜플 Triple - 값이 3개인 튜플 Array - 객체나 프리미티브 타입으로 구성되어 순번이 있고, 크기가 고정된 콜렉션 List - 객체들이 정렬된 콜렉션 Set - 객체들이 정렬되지 않은 콜렉션 Map - 연관 사전 혹은 키와 값의 맵 2. withIndex() - forin 문에서 Index 또한 사용 가능...

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Oct 31, 2021 · 2 min read

Stack kotlin

스택(stack)은 제한적으로 접근할 수 있는 나열 구조이다. 그 접근 방법은 언제나 목록의 끝에서만 일어난다. 끝먼저내기 목록(Pushdown list)이라고도 한다. 스택은 한 쪽 끝에서만 자료를 넣거나 뺄 수 있는 선형 구조(LIFO - Last In First Out)으로 되어 있다. 자료를 넣는 것을 '밀어넣는다' 하여 푸쉬(push)라고 하고 반대로 넣어둔 자료를 꺼내는 것을 팝...

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Sep 25, 2021 · 1 min read

Kotlin Study Log 00 특이점 정리하기

코틀린 공부 Log 특이점 정리하기 변수 타입 지정은 생략해도된다 정적 타입이란 변수의 타입이 컴파일 시점에 검증되고 정확해져야 한다는 의미 - 특징 - 향상된 통일성 체크 - Java의 Equal API 대신에 == 사용할것 Null handling 도 덩달아! - Raw 문자열 기능 """ 감싸서 Multiline 처리 용이...

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Sep 25, 2021 · 1 min read

Kotlin Study Log 00 특이점 정리하기

코틀린 공부 Log 특이점 정리하기 변수 타입 지정은 생략해도된다 정적 타입이란 변수의 타입이 컴파일 시점에 검증되고 정확해져야 한다는 의미 - 특징 - 향상된 통일성 체크 - Java의 Equal API 대신에 == 사용할것 Null handling 도 덩달아! - Raw 문자열 기능 """ 감싸서 Multiline 처리 용이...

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Aug 24, 2021 · 2 min read

Android Color All hex value from 100% to 0% alpha

100% — FF 99% — FC 98% — FA 97% — F7 96% — F5 95% — F2 94% — F0 93% — ED 92% — EB 91% — E8 90% — E6 89% — E3 88% — E0 87% — DE 86% — DB 85% — D9 84% — D6 83% — D4 82% — D1 81% — CF 80% — CC 79% — C9 ...

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Aug 05, 2021 · 4 min read

how to support latest amazon tablet devices like Fire HD 10 series

현재 근무 중인 회사에서 개발하고 있는 앱을 아마존 앱스토어에 출시하는 과정에 있습니다 개발을 완료하고 Amazon Development console에 최종적인 Android APK 파일을 업로드하였습니다 마켓에 앱을 출시하기에 개발한 게임이나 앱의 지원할 수 있는 Device Spec을 정할 수 있습니다 사진과 같이 Phone, Tablet 등 디바이스별로 정할 수 있는데, 이상하게...

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Jul 28, 2021 · 3 min read

Solved "PurchaseResponse.RequestStatus.FAILED", While amazon IAP Live test environment

현재 근무하고 있는 회사에서 아마존 결제 라이브러리를 활용해 유니티플러그인을 개발 중입니다 아마존에서 제공하는 IAP 결제 라이브러리를 내부에서 개발한 라이브러리와 결합해서 AAR Format의 통합 라이브러리를 만들었습니다 실제 개발을 완료하고 Test하는 과정에서 기이한 현상이있어 기록으로 남깁니다 아마존 IAP Test 환경 같은 경우에는 크게 3가지 단계로 Test할수있습니다...

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Jul 23, 2021 · 1 min read

What is a WebRTC

WebRTC You can add real-time communication capabilities to your application that works on top of an open standard It supports video, voice, and generic data to be sent between **peers**, allowing developers to build pow...

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Jul 23, 2021 · 1 min read

How to build for WebRTC Android

WebRTC Android development Getting the Code Android development is only supported on Linux - Install prerequisite software - Create a working directory, enter it, and run: ~~~ $ fetch --nohooks webrtc_android ...

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