gradlew assembleRelease command in react-native android is not generating the app-release.apk

10
votes

I want to generate the unsigned app-release.apk without the react-packager server. I am running the following commands for that.

cd react-native-project-dir

react-native bundle --platform android --dev false --entry-file index.android.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res/

After the following command I get the error in command prompt like these:

cd android && gradlew assemblerelease

app:processReleaseManifestessReleaseManifest

:app:processReleaseResources D:\ReactNativeProject\android\app\build\intermediates\res\merged\release\drawable-mdpi-v4\image_background_unique_2.jpg: error: Duplicate file. D:\ReactNativeProject\android\app\build\intermediates\res\merged\release\drawable-mdpi\image_background_unique_2.jpg: Original is here. The version qualifier may be implied. :app:processReleaseResources FAILED

FAILURE: Build failed with an exception.

  • What went wrong: Execution failed for task ':app:processReleaseResources'. com.android.ide.common.process.ProcessException: Failed to execute aapt

And I am not able to generate the app-release.apk and not understanding why the image_background_unique_2.jpg file is getting added two times in different folders.

8
androidandroid-studioreact-native
Please read Under what circumstances may I add “urgent” or other similar phrases to my question, in order to obtain faster answers? - the summary is that this is not an ideal way to address volunteers, and is probably counterproductive to obtaining answers. Please refrain from adding this to your questions. – halfer
Did you use Create React Native Application? – Mayur Bhangale
I have used react-native init projectName – Mayuri Birajdar
when I have deleted my drawable-folders I get the error like: Unable to process incoming event 'ProgressComplete ' (ProgressCompleteEvent) – Mayuri Birajdar

8 Answers

8
votes

I was trying to generate a signed APK following the steps from https://facebook.github.io/react-native/docs/signed-apk-android.html to generate a signed apk.

I had the same issue. Showed error: Duplicate file for some of my images when I ran ./gradlew assembleRelease. assembleRelease seems to cause some problems with drawable- folders. I deleted all the drawable- folders from /android/app/src/main/res/. Then I ran ./gradlew assembleRelease again. Finaly, it generated a signed APK at /android/app/build/outputs/apk/.

21
votes

The issue is that the new version of react-native bundles the assets under /app/build/intermediates/res/merged/release instead of app/src/main/res

To resolve it, this is what I did

rm -rf android/app/src/main/res/drawable-*

Now bundle assets using this command:

react-native bundle --platform android --dev false --entry-file index.android.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/build/intermediates/res/merged/release/

Note the updated --assets-dest in the above command. Assembling the APK worked ok after that!

react-native run-android --variant=release

1
votes

It seems that you bundled your app and installed it to your phone with assembleDebug. When you decided to go for assembleRelease then you should delete drawable- folders. They create problem somehow when you decide to produce an .apk file.

0
votes

Did you try a react native clean build ? Try resetting the cache and then bundle. Maybe it will resolve this issue.

0
votes

I have managed to solve this problem by deleting the duplicates of the folder in react native /android/app/build/intermediates/res/merged/release/drawable-mdpi

0
votes

First delete all folders that are potentially causing this error by typing:

rm -rf ./android/app/build/intermediates/res/merged/release/drawable-*

Then change mdpi to mdpi-v4 in:

./node_modules/react-native/local-cli/bundle/assetPathUtils.js

function getAndroidAssetSuffix(scale) {
  switch (scale) {
    case 0.75: return 'ldpi';
    case 1: return 'mdpi-v4';
    case 1.5: return 'hdpi';
    case 2: return 'xhdpi';
    case 3: return 'xxhdpi';
    case 4: return 'xxxhdpi';
  }
}

Then bundle your offline includes:

react-native bundle --platform android --dev false --entry-file index.android.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/build/intermediates/res/merged/release/

Finally build the release version of your app:

cd ./android && ./gradlew assembleRelease
0
votes

this worked for me

Add the following code to file node_modules/react-native/react.gradle :

doLast {
    def moveFunc = { resSuffix ->
        File originalDir = file("${resourcesDir}/drawable-${resSuffix}")
        if (originalDir.exists()) {
            File destDir = file("${resourcesDir}/drawable-${resSuffix}-v4")
            ant.move(file: originalDir, tofile: destDir)
        }
    }
    moveFunc.curry("ldpi").call()
    moveFunc.curry("mdpi").call()
    moveFunc.curry("hdpi").call()
    moveFunc.curry("xhdpi").call()
    moveFunc.curry("xxhdpi").call()
    moveFunc.curry("xxxhdpi").call()
}

inside def currentBundleTask = tasks.create(...

found this solution here https://github.com/facebook/react-native/issues/5787

0
votes

you can do one things for debug to make react native bundle run below command

react-native bundle --assets-dest ./android/app/src/main/res/ --entry-file ./index.js --bundle-output ./android/app/src/main/assets/index.android.bundle --platform android --dev true

For release:

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/build/intermediates/res/merged/release/