Declaring custom 'clean' task when using the standard Gradle lifecycle plugins is not allowed

Question

I am adding a library to jCenter so to do that I needed to add some plugins to my project's build.gradle file. However, I am getting the error

Declaring custom 'clean' task when using the standard Gradle lifecycle plugins is not allowed.

I can see the task clean block and when I delete it the error goes away. I assume that is all I need to do, but was it doing something important before? If I remove the plugins sometime and forget to add the clean block back in, what dire consequences are in store?

buildscript {     repositories {         jcenter()     }     dependencies {         classpath 'com.android.tools.build:gradle:2.3.1'          // NOTE: Do not place your application dependencies here; they belong         // in the individual module build.gradle files     } }  plugins {     id "com.jfrog.bintray" version "1.7.3"     id "com.github.dcendents.android-maven" version "1.5" }  allprojects {     repositories {         jcenter()     } }  task clean(type: Delete) {     delete rootProject.buildDir } 

This and this this did not satisfactorily answer the question.

Answer 1

You should not try to override the default clean task, but instead configure it to delete additional stuff like

clean {     delete rootProject.buildDir } 

But check first whether this is not the default behavior of the clean task anyway.

Alternatively if you want to be able to do a specific clean action individually, you can also define a separate task and add a dependency like

task customClean(type: Delete) {     delete rootProject.buildDir } clean.dependsOn customClean 

Answer 2

Remove these lines from your code.

task clean(type: Delete) {     delete rootProject.buildDir }