Cannot add task 'wrapper' as a task with that name already exists

Question

When installing \'react-native init AwesomeProject\' I get this error when I run react-native run-android:

Could not determine         


        

Answer 1

There's a high chance you have a "task" to run in your build.gradle file, go and remove the line related to wrapper (including its bracket and so on). Then, if you are using IntelliJ, it will automatically bring the new one to your working directory.

Answer 2

I ran into the issue because I was running my task using the global gradle, and not my local gradle wrapper.

i.e. in my current directory I had a gradlew executable.

But I was running this command:

gradle <task>

When I should have been running:

./gradlew <task>

Presumably because running the global gradle tries to create a local wrapper -- and one already existed.

Answer 3

I have the same issue. the problem in my code was a double declaration on another Gradle file in build.gradle

build.gradle

apply from: otherFile.gradle
... build. gradle code...
apply from: otherFile.gradle //Again 

Answer 4

You can also update

task wrapper(type: Wrapper) {
    gradleVersion = '4.4'    
    distributionUrl = distributionUrl.replace("bin", "all")
}

to

wrapper {
    gradleVersion = '4.4'
    distributionUrl = distributionUrl.replace("bin", "all")
}

As

Overriding built-in tasks deprecated in 4.8 now produces an error.

Attempting to replace a built-in task will produce an error similar to the following:

Cannot add task 'wrapper' as a task with that name already exists.

see the last paragraph of Tasks & properties: https://docs.gradle.org/5.2.1/userguide/upgrading_version_4.html

and Customizing the Wrapper task: https://docs.gradle.org/5.2.1/userguide/gradle_wrapper.html#customizing_wrapper

Answer 5

As mentioned in the comments follow - https://stackoverflow.com/a/46867575/4982729:

1. Open and edit the file app-folder/android/gradle/wrapper/gradle-wrapper.properties; update the line

   distributionUrl=https\://services.gradle.org/distributions/gradle-5.0-all.zip
   

2. In file AwesomeProject/android/build.gradle try commenting out

   task wrapper(type: Wrapper) {
       gradleVersion = '4.4'
       distributionUrl = distributionUrl.replace("bin", "all")
   }
   

Answer 6

if "gradle-wrapper.properties" file already have these codes

distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip

then you can remove

task wrapper(type: Wrapper) {
    gradleVersion = '4.4'
    distributionUrl = distributionUrl.replace("bin", "all")
}

from build.gradle