gradle build error Plugin with id 'com.android.application' not found

Question

I've been trying to build my android app with gradle build, and to get it download required dependencies and jar files automatically, I added in my settings.gradle

apply plugin: 'com.android.application'
apply plugin: 'com.android.library'

And my build.gradle looks like this

plugins {
    // Apply the application plugin to add support for building a CLI application in Java
}
repositories {
    google()
    mavenCentral()
}
dependencies {
    testImplementation 'org.junit.jupiter:junit-jupiter:5.8.1'
    implementation 'com.google.guava:guava:30.1.1-jre'
    classpath 'com.android.tools.build:gradle:7.1'
}
application {
    mainClass = 'MyProject.App'
}
tasks.named('test') {
    useJUnitPlatform()
}

When I try running gradle build, I get an error:

A problem occurred while evaluating settings 'MyProject'.
> Plugin with id 'com.android.application' not found.

I did some research, and every answer on the Internets says it's probably due to the plugin version, so I tried solving the problem by using versions 4.1, 4.2, 7.1, and 7.0 for of 'com.android.tools.build:gradle', with no avail.

Answer 1

You are adding plugins in wrong place.

Plugins are added inside app/build.gradle and classpaths are added inside the root (project) /build.gradle.

For example, inside app/build.gradle

apply plugin: 'com.android.application'
buildscript {
    repositories { 
        mavenCentral()
    }
    dependencies { }
}

Inside (root)/build.gradle

dependencies{
    classpath 'com.android.tools.build:gradle:7.1'
}