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I am building a release APK of my React Native app in Android using Gradle version 3.2.0 and compileSdkVersion 28. I am running the following commands:

react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res/
cd android && ./gradlew clean && ./gradlew assembleRelease && ./gradlew installRelease

My folder structure is:

Folder structure

My package.json is:

{
  "name": "App",
  "version": "2.0.0",
  "private": true,
  "scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "jest"
  },
  "dependencies": {
    "axios": "^0.18.0",
    "native-base": "^2.8.0",
    "prop-types": "^15.6.2",
    "qs": "^6.5.2",
    "react": "^16.5.2",
    "react-native": "0.57.0",
    "react-native-animatable": "^1.3.0",
    "react-native-animated-icons": "^1.0.5",
    "react-native-appsee": "^2.4.14",
    "react-native-blur": "^3.2.2",
    "react-native-cast-chrome": "1.0.0",
    "react-native-cast-ui": "1.0.0",
    "react-native-device-info": "^0.22.3",
    "react-native-dialog": "^5.1.0",
    "react-native-elements": "^0.19.1",
    "react-native-email": "^1.0.1",
    "react-native-fast-image": "^5.0.3",
    "react-native-fbsdk": "^0.8.0",
    "react-native-flurry-analytics": "^3.0.2",
    "react-native-gridview": "^0.1.2",
    "react-native-iap": "^2.2.1",
    "react-native-iphone-x-helper": "^1.0.3",
    "react-native-keyboard-aware-scroll-view": "^0.7.0",
    "react-native-kochava-tracker": "^1.0.0",
    "react-native-linear-gradient": "^2.4.0",
    "react-native-material-dropdown": "^0.11.1",
    "react-native-modal": "^6.5.0",
    "react-native-orientation": "^3.1.3",
    "react-native-photo-upload": "^1.3.0",
    "react-native-scrollable-tab-view": "^0.8.0",
    "react-native-snap-carousel": "^3.7.4",
    "react-native-tab-view": "^1.2.0",
    "react-native-underline-tabbar": "^1.3.6",
    "react-native-vector-icons": "^5.0.0",
    "react-native-video": "^3.2.1",
    "react-native-video-controls": "^2.2.3",
    "react-navigation": "^2.11.2",
    "react-navigation-backhandler": "^1.1.1",
    "react-redux": "^5.0.7",
    "redux": "^4.0.0",
    "redux-logger": "^3.0.6",
    "redux-thunk": "^2.3.0"
  },
  "devDependencies": {
    "@babel/plugin-external-helpers": "^7.0.0",
    "ajv": "^6.5.2",
    "babel-eslint": "^9.0.0",
    "babel-jest": "23.4.2",
    "babel-plugin-transform-remove-console": "^6.9.4",
    "eslint": "^5.3.0",
    "eslint-config-airbnb": "^17.1.0",
    "eslint-plugin-import": "^2.14.0",
    "eslint-plugin-jsx-a11y": "^6.1.1",
    "eslint-plugin-react": "^7.11.0",
    "jest": "23.4.2",
    "metro-react-native-babel-preset": "^0.45.4",
    "react-test-renderer": "16.4.1",
    "schedule": "^0.4.0"
  },
  "jest": {
    "preset": "react-native"
  }
}

While ruuning the commands, I get error on Task :app:mergeReleaseResources FAILED with Error: Duplicate resources for all of my assets. When removing the assets from my drawable folders, the app builds.

But while running the release APK, some of the images are not appearing at all while others are. Furthermore, the same image is appearing in some places while not appearing in others. None of these problems happen while running the debug app from the JS server. This problem is not happening in iOS.

How do I solve this problem?

Florin Dobre
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khateeb
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2 Answers2

1

According to RN 0.57 change log:

Android tooling has been updated to match newer configuration requirements (SDK 27, gradle 4.4, and support library 27); building with Android plugin 3.2 doesn't work due to the gradle scripts, so please stay on Android Studio 3.1 for now

1) try to set those according to RN change log

com.android.tools.build:gradle:3.1.4 should work

2) try to remove android build folder and run just ./gradlew assembleRelease without any bundle-ing

I am using RN 0.57 too and generating apk without bundle-ing works ok for me.

If you still have problems and want to use bundle-ing try to check:

React Native Android Duplicate file error when generating apk

These answers from there should fix the issue:

https://stackoverflow.com/a/52750886/1979861

https://stackoverflow.com/a/50876742/1979861

More info about 0.57 android updates here:

https://github.com/react-native-community/react-native-releases/blob/master/CHANGELOG.md

Florin Dobre
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0

I hope this email finds you well. I wanted to share an informative blog post with you that I recently came across. Here i provide proper solution. In above example i check. Initially worked but when build upload that's time create issue. https://medium.com/@yourerrorbro/handling-duplicate-resource-issue-in-android-released-builds-in-react-native-f63c67176bce

Shivam Thaker
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