How to declare a task that depends on other task?

You can declare tasks that depend on other tasks. All you need to do is, use dependsOn keyword to declare dependent tasks. The dependent tasks will be executed first before executing requested task. Look at below example, how we have declared build task dependency with test task:

task test << {
        println 'i am a test task'
}
task build(dependsOn: test) << {
        println "i am build depends on test"
}

Run command gradle build on command-line:

java2novice$ gradle build
:test
i am a test task
:build
i am build depends on test

BUILD SUCCESSFUL

Total time: 1.701 secs

How to declare if your task depends on multiple tasks? It's simple, you can declare multiple tasks seperated by comma, and enclosed with in '[]', here is an example how to declare multiple dependencies:

task clean << {
        println 'i am a clean task'
}
task test << {
        println 'i am a test task'
}
task build(dependsOn: [clean, test]) << {
        println "i am build depends on test"
}

Run command gradle build on command-line:

java2novice$ gradle build
:clean
i am a clean task
:test
i am a test task
:build
i am build depends on test

BUILD SUCCESSFUL

Total time: 2.657 secs

Reference: Gradle Documentation

Gradle configuration examples

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