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react native – Task 'assembleRelease' not found in root project 'android'

Posted by: admin June 15, 2020 Leave a comment


I’m using Reactnative 0.54.0 and react-native-cli 2.0.1 along side gradle 4.8.1

I have created a react-native project using create-react-native-app myProjectName

When I created the project, it doesn’t include android and ios folders, so I added them manually.

I also installed gradle using choco and then created a wrapper for it using gradle wrapper –gradle-version 4.8.1 –distribution-type all

so I am developing react-native using microsoft vsCode and then see my application in action using Genymotion emulator, everything is fine

now, I want to generate the final Signed APK for play store, I’m using this guide provided by react-native


When I want to run gradlew assembleRelease I get this error

C:\myApp\android>gradlew assembleRelease

FAILURE: Build failed with an exception.

* What went wrong:
Task 'assembleRelease' not found in root project 'android'.

* Try:
Run gradlew tasks to get a list of available tasks. Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org


what’s wrong with assembleRelease? what should I do?

to add more info, I have to say that when I want to build this project in VSTS (TFS Online) I get this error

2018-07-17T16:20:14.9268702Z ##[error]Error: Not found wrapperScript: D:\a\s\gradlew

Any clue is appriciated

as @philipp asked, this is the list of tasks that gradlew have listed and assembleRelease is not one one them!!!! what’s the reason?

C:\myApp\Android>gradlew tasks

> Task :tasks

All tasks runnable from root project

Build Setup tasks
init - Initializes a new Gradle build.
wrapper - Generates Gradle wrapper files.

Help tasks
buildEnvironment - Displays all buildscript dependencies declared in root project 'android'.
components - Displays the components produced by root project 'android'. [incubating]
dependencies - Displays all dependencies declared in root project 'android'.
dependencyInsight - Displays the insight into a specific dependency in root project 'android'.
dependentComponents - Displays the dependent components of components in root project 'android'. [incubating]
help - Displays a help message.
model - Displays the configuration model of root project 'android'. [incubating]
projects - Displays the sub-projects of root project 'android'.
properties - Displays the properties of root project 'android'.
tasks - Displays the tasks runnable from root project 'android'.

To see all tasks and more detail, run gradlew tasks --all

To see more detail about a task, run gradlew help --task <task>

1 actionable task: 1 executed

and this is myApp\android**build.gradle**

project.ext.react = [
    bundleInStaging: true 
task wrapper(type: Wrapper) {
    gradleVersion = '4.8.1'
android {
    defaultConfig {
        applicationId "com.sunkime.client"
    signingConfigs {
        staging {
            keyAlias = "staging"
            storeFile = file("my-release-key.keystore")
            keyPassword = "qwert%$#@!"
            storePassword = "qwert%$#@!"
        release {
            if (project.hasProperty('MYAPP_RELEASE_STORE_FILE')) {
                storeFile file(MYAPP_RELEASE_STORE_FILE)
                storePassword qwert%$#@!
                keyAlias qwert%$#@!
                keyPassword qwert%$#@!
    buildTypes {
        debug {
            applicationIdSuffix ".debug"
        staging {
            applicationIdSuffix ".staging"
            signingConfig signingConfigs.staging
            minifyEnabled true
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"

        release {
            applicationIdSuffix ".release"
            signingConfig signingConfigs.release
            minifyEnabled true
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"

I also used gradlew clean and no difference

How to&Answers:

Is it specific for assembleRelease or is gradlew assembleDebug working?

Maybe try cd android && ./gradlew clean && ./gradlew assembleRelease

Posting your apps build.gradle could also help.

As a first task I would recommend to run ./gradlew tasks to check if gradle is set up correctly and the task assembleRelease is listed.


You need a settings.gradle file into your Android folder.


If assembleRelease and assembleDebug tasks don’t working, you can try gradlew assemble


that error can occur after upgrading versions of IntelliJ IDEA or Android Studio, or after Generating a new APK, you may need to refresh the IDE’s cache.
It can also be due to updating location of SDK (like me)
just a simple hack will do,Invalidate cache


File -> Invalidate Caches / Restart…



For me works setting the ANDROID_HOME and delete file local.properties with “sdk.dir=C:\Users\Me\AppData\Local\Android\Sdk”. When gradle does not find the local properties It search in ANDROID_HOME


Make sure you are not finding the android environment variables

Run the command on the mac like this to load the variables

source ~/.bash_profile