error Failed to install the app. Make sure you have the Android development environment set up: https://reactnative.dev/docs/environment-setup.
Error: Command failed: ./gradlew app:installDebug -PreactNativeDevServerPort=8081
ERROR:[drawable-mdpi-v4/src_assets_image_banner_3] /Users/junghanma/dev/aniwalk/android/app/src/main/res/drawable-mdpi/src_assets_image_banner_3.png [drawable-mdpi-v4/src_assets_image_banner_3] /Users/junghanma/dev/aniwalk/android/app/src/main/res/drawable-mdpi/src_assets_image_banner_3.jpg: Resource and asset merger: Duplicate resources
ERROR:[drawable-mdpi-v4/src_assets_image_banner_2] /Users/junghanma/dev/aniwalk/android/app/src/main/res/drawable-mdpi/src_assets_image_banner_2.jpg [drawable-mdpi-v4/src_assets_image_banner_2] /Users/junghanma/dev/aniwalk/android/app/src/main/res/drawable-mdpi/src_assets_image_banner_2.png: Resource and asset merger: Duplicate resources
ERROR:[drawable-mdpi-v4/src_assets_image_banner_1] /Users/junghanma/dev/aniwalk/android/app/src/main/res/drawable-mdpi/src_assets_image_banner_1.jpg [drawable-mdpi-v4/src_assets_image_banner_1] /Users/junghanma/dev/aniwalk/android/app/src/main/res/drawable-mdpi/src_assets_image_banner_1.png: Resource and asset merger: Duplicate resources
FAILURE: Build failed with an exception.
이미지 변경으로 인하여 이미지 중복으로 생긴 오류입니다.
해결방법
android / app / src / main / res / drawble-mdpi 폴더삭제
android 경로에서 ./gradlew clean -> cd .. 프로젝트경로에서
react-native android build 재실행
정상 작동