안드로이드 환경에서 사용 시에 확인해야할 사항입니다.

1.example 내부에 android 폴더 생성 (기본 안드로이드 플랫폼 생성)
2.example/android/app/src/main/AndroidManifest.xml에서 permission값 추가
    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:required="true" android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:required="true" android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission android:required="true" android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:required="true" android:name="android.permission.CHANGE_NETWORK_STATE" />
    <uses-permission android:required="true" android:name="android.permission.INTERNET" />
3. 필요시에 example/android/local.properties에서 SDK, NDK PATH 설정
4. 필요시에 example/android/build.gradle에서 SDK,NDK 버전 맞춰주기 (NDK 18.1.5063045에서 개발하였음)
5. 필요시에 JAVA version 변경 (15.0.1)


(ENG)
1. make sure to add an android platform inside of the example folder.
2. if it’s necessary, add example/android/local.properties for setting SDK and SDK path.
3. if it’s necessary, modify example/android/build.gradle for setting SDK version and NDK version to make matched with your development environment.
4. if it’s necessary, change the JAVA version. 

[Development Environment]
SDK version: 29
NDK version: 18.1.5063045
JAVA version: 15.0.1
