How to use gradle properties in build.gradle

Question

When I run this task:

task tmpTask << {
    project.properties.each {println \"   $it\"}
}

I see:

org.gradle.java.home=/u         


        

Answer 1

From gradle.properties

Add prop to the file gradle.properties

hi1=hi

From CommandLine

Add -Pxxx end of commandline.

./gradlew -q readPropertiesTask -Phi2=tete

Several properties：

./gradlew -q readPropertiesTask -Phi2=tete -Phi3=rr

How to read?

val propFromFile = project.properties["hi1"]
println("propFromFile = $propFromFile")